Liquid crystal display device, and method and circuit for driving liquid crystal display device

US 20050140634A1
Filed: 12/23/2004
Published: 06/30/2005
Est. Priority Date: 12/26/2003
Status: Abandoned Application

First Claim

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1. A liquid crystal display device comprising:

a liquid crystal display section having scan electrodes, image signal electrodes, a plurality of pixel electrodes arranged in a matrix, a plurality of switching elements for transmitting an image signal to the pixel electrodes, and a common electrode;

an image signal drive circuit;

a scan signal drive circuit;

a synchronous circuit; and

a common electrode potential control circuit for changing an electric potential of the common electrode into a pulse shape, after the scan signal drive circuit has scanned all the scan electrodes and the image signal has been transmitted to the pixel electrodes.

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Abstract

A liquid crystal display device includes a display section, an image signal drive circuit, a scan signal drive circuit, a common electrode potential control circuit, and a synchronous circuit. The display section has scan electrodes, image signal electrodes, a plurality of pixel electrodes arranged in a matrix, a plurality of switching elements for transmitting an image signal to the pixel electrodes, and a common electrode. The common electrode potential control circuit changes an electric potential of the common electrode into a pulse shape, after the scan signal drive circuit has scanned all the scan electrodes and the image signal has been transmitted to the pixel electrodes. Otherwise, the image signal is overdriven. Otherwise, torque for returning to a no-voltage-application state is increased.

Citations

310 Claims

1. A liquid crystal display device comprising:
- a liquid crystal display section having scan electrodes, image signal electrodes, a plurality of pixel electrodes arranged in a matrix, a plurality of switching elements for transmitting an image signal to the pixel electrodes, and a common electrode;
  
  an image signal drive circuit;
  
  a scan signal drive circuit;
  
  a synchronous circuit; and
  
  a common electrode potential control circuit for changing an electric potential of the common electrode into a pulse shape, after the scan signal drive circuit has scanned all the scan electrodes and the image signal has been transmitted to the pixel electrodes.
- View Dependent Claims (7, 15, 23, 29, 35, 41, 47, 53, 59, 65, 71, 77, 83, 89, 95, 101, 107, 113, 119, 125, 131, 137, 143, 149, 155, 161, 167, 173, 179, 185, 191, 197, 203, 209, 215, 221, 227, 233, 239, 245, 251, 257, 263, 269, 275, 281, 287, 293, 299, 305)
- - 7. The liquid crystal display device according to claim 1, wherein the electric potential of the common electrode changed into the pulse shape does not reset display of the liquid crystal display section.
  - 15. The liquid crystal display device according to claim 1, wherein the electric potential of the common electrode changes among at least three potentials.
  - 23. The liquid crystal display device according to claim 1, wherein the electric potential of the common electrode or the electric potential of the storage capacitor electrode is changed into the pulse shape in a direction of temporarily increasing a potential difference between the pixel electrode and the common electrode or between the pixel electrode and the storage capacitor electrode.
  - 29. The liquid crystal display device according to claim 1, wherein an electric potential of the image signal is different from an electric potential of the image signal in a stable display state during static drive, in consideration with response characteristics of the display section during electric charge hold drive.
  - 35. The liquid crystal display device according to claim 29, wherein the electric potential of the image signal is determined by considering the response characteristics of the display section, and by comparing hold data of each pixel before writing the image signal with display data to be newly displayed.
  - 41. The liquid crystal display device according to claim 1, wherein an electric field response material is sandwiched between the pixel electrode and the common electrode of the display section.
  - 47. The liquid crystal display device according to claim 41, wherein the electric field response material comprises a liquid crystal material.
  - 53. The liquid crystal display device according to claim 47, wherein the liquid crystal material is nematic liquid crystal, and is in twisted nematic alignment.
  - 59. The liquid crystal display device according to claim 53, wherein a relation of p/d<
    - 20 holds between a twist pitch p (μ
      
      m) of the liquid crystal material in the twisted nematic alignment and an average thickness d (μ
      
      m) of a liquid crystal material layer in the twisted nematic alignment.
  - 65. The liquid crystal display device according to claim 59, wherein a relation of p/d<
    - 8 holds between the twist pitch p (μ
      
      m) of the liquid crystal material in the twisted nematic alignment and the average thickness d (μ
      
      m) of the liquid crystal material layer in the twisted nematic alignment.
  - 71. The liquid crystal display device according to claim 59, wherein the liquid crystal material in the twisted nematic alignment is polymerically stabilized to have an almost continuously twisted structure.
  - 77. The liquid crystal display device according to claim 47, wherein the liquid crystal material is in a voltage control birefringent mode.
  - 83. The liquid crystal display device according to claim 47, wherein the liquid crystal material is in pi-alignment (bend alignment).
  - 89. The liquid crystal display device according to claim 83, using an optical compensation flim, and being in an OCB (optical compensated birefringence) mode.
  - 95. The liquid crystal display device according to claim 47, wherein the liquid crystal material is in a VA (vertical alignment) mode in which the liquid crystal material is aligned in homeotropic manner.
  - 101. The liquid crystal display device according to claim 95, wherein the liquid crystal material is divided into multi-domains.
  - 107. The liquid crystal display device according to claim 47, wherein the liquid crystal material is in an IPS (in-plane switching) mode, such that the liquid crystal material responds to an electric field approximately in parallel with the surface of a substrate in the IPS mode.
  - 113. The liquid crystal display device according to claim 47, wherein the liquid crystal material is in a FFS (fringe field switching) mode or an AFFS (advanced fringe field switching) mode.
  - 119. The liquid crystal display device according to claim 47, wherein the liquid crystal material is a ferroelectric liquid crystal material, an anti-ferroelectric liquid crystal material, or a liquid crystal material showing an electroclinic response.
  - 125. The liquid crystal display device according to claim 47, wherein the liquid crystal material is a cholesteric liquid crystal material.
  - 131. The liquid crystal display device according to claim 47, wherein the liquid crystal material is polymerically stabilized to have a structure in a state without a voltage applied or with a low voltage applied.
  - 137. The liquid crystal display device according to claim 1, wherein the display section has a color filter to achieve color display.
  - 143. The liquid crystal display device according to claim 1, wherein the display section is provided with a lenticular lens sheet or a dual prism sheet to achieve stereoscopic display.
  - 149. The liquid crystal display device according to claim 1, being in a color field sequential (color time division) method, wherein an image signal is divided into a plurality of color image signals corresponding to a plurality of colors, a light source corresponding to the plurality of colors is synchronized with the plurality of color image signals with a predetermined phase difference, and the plurality of color image signals are successively displayed with time.
  - 155. The liquid crystal display device according to claim 149, being in a color field sequential (color time division) type of time division stereoscopic display method, wherein an image signal comprises an image signal for a right eye and an image signal for a left eye, the image signal for each eye is divided into a plurality of color image signals corresponding to a plurality of colors, light sources which correspond to the plurality of colors and are disposed in two positions are synchronized with the image signals for the respective eyes with a predetermined phase difference, the image signals for the respective eyes are successively displayed with time in synchronization with the plurality of color image signals, and the image signals for the respective eyes are successively displayed with time as the divided plurality of color image signals.
  - 161. The liquid crystal display device according to claim 1, being an amorphous silicon thin-film transistor display device, wherein a pixel switch comprises a thin-film transistor made of amorphous silicon.
  - 167. The liquid crystal display device according to claim 1, being a poly-silicon thin-film transistor display device, wherein a pixel switch comprises a thin-film transistor made of polycrystalline silicon.
  - 173. The liquid crystal display device according to claim 1, wherein a pixel switch comprises a transistor made of single crystal silicon.
  - 179. The liquid crystal display device according to claim 1, wherein the polarity of the image signal is reversed at a predetermined timing, and of a plurality of electric potentials among which the electric potential of the common electrode changes, one or two electric potentials applied for longer time than the other electric potentials is/are almost equal to an electric potential middle of a maximum electric potential and a minimum electric potential of all electric potentials applied as the image signal.
  - 185. The liquid crystal display device according to claim 1, wherein the polarity of the image signal is reversed at a predetermined timing, and of a plurality of electric potentials among which the electric potential of the common electrode changes, one or two electric potentials applied for longer time than the other electric potentials is/are almost equal to one of a maximum electric potential and a minimum electric potential of all electric potentials applied as the image signal.
  - 191. The liquid crystal display device according to claim 1, wherein the electric potential of the common electrode just before the scan signal drive circuit starts scanning a first scan electrode of the scan electrodes is equal to the electric potential of the common electrode just after the scan signal drive circuit has scanned all the scan electrodes and the image signal has been transmitted to the pixel electrode, and before the electric potential of the common electrode is changed into the pulse shape.
  - 197. The liquid crystal display device according to claim 1, wherein the electric potential of the common electrode just before the scan signal drive circuit starts scanning a first scan electrode of the scan electrodes is different from the electric potential of the common electrode just after the scan signal drive circuit has scanned all the scan electrodes and the image signal has been transmitted to the pixel electrode, and before the electric potential of the common electrode is changed into the pulse shape.
  - 203. The liquid crystal display device according to claim 197, wherein the electric potential of the common electrode just before the scan signal drive circuit starts scanning the first scan electrode of the scan electrodes is almost equal to one of a maximum electric potential and a minimum electric potential applied as an image signal to be applied after that, and the electric potential of the common electrode just after the scan signal drive circuit has scanned all the scan electrodes and the image signal has been transmitted to the pixel electrode and before being changed into the pulse shape is almost equal to the other of the maximum electric potential and the minimum electric potential having applied as the image signal.
  - 209. A method for driving the liquid crystal display device according to claim 1, wherein the electric potential of the common electrode is composed of four electric potentials, a first electric potential being the electric potential of the common electrode while the scan signal drive circuit scans the scan electrodes to transmit the reversed image signal with one polarity, a second electric potential being an electric potential of a pulse height section while the electric potential of the common electrode is changed into the pulse shape following the first electric potential, a third electric potential being an electric potential after the completion of the pulse when the electric potential of the common electrode has been changed into the pulse shape following the second electric potential, and being the electric potential of the common electrode while the scan signal drive circuit scans the scan electrodes to transmit the reversed image signal with the other polarity, and a fourth electric potential being an electric potential of a pulse height section while the electric potential of the common electrode is changed into the pulse shape following the third electric potential.
  - 215. A method for driving the liquid crystal display device according to claim 1, wherein the electric potential of the common electrode is composed of six potentials, a first electric potential being the electric potential of the common electrode while the scan signal drive circuit scans the scan electrodes to transmit a reversed image signal with one polarity, a second electric potential being an electric potential of a pulse height section while the electric potential of the common electrode is changed into the pulse shape following the first electric potential, a third electric potential being an electric potential after the completion of the pulse when the electric potential of the common electrode has been changed into the pulse shape following the second electric potential, a fourth electric potential being the electric potential of the common electrode while the scan signal drive circuit scans the scan electrodes to transmit the reversed image signal with the other polarity, a fifth electric potential being an electric potential of a pulse height section while the electric potential of the common electrode is changed into the pulse shape following the fourth electric potential, and a sixth electric potential being an electric potential after the completion of the pulse when the electric potential of the common electrode has been changed into the pulse shape following the fifth electric potential.
  - 221. The liquid crystal display device according to claim 1, having a light emitting section for emitting light to be incident on the display section, and a synchronous circuit for synchronously modulating a light intensity of the light emitting section with a predetermined phase with respect to the image signal.
  - 227. The liquid crystal display device according to claim 1, having a light emitting section for emitting light to be incident on the display section, and a synchronous circuit for synchronously changing the color of light of the light emitting section with a predetermined phase with respect to the image signal.
  - 233. The liquid crystal display device according to claim 1, having a light emitting section for emitting light to be incident on the display section, and a synchronous circuit for synchronously modulating a light intensity of light of the light emitting section with a predetermined phase with respect to the image signal, and for synchronously changing the color of light of the light emitting section with a predetermined phase with respect to the image signal.
  - 239. A method for driving the liquid crystal display device according to claim 1, wherein a timing of modulating the light intensity of the light emitting section or changing the color of light of the light emitting section is positioned at the end of each field or each subfield corresponding to the color when the field is divided into the subfields in accordance with a plurality of colors, and just before writing an image signal of the next field.
  - 245. The liquid crystal display device according to claim 1, wherein the electric potential of the image signal is determined by performing comparison among hold data of each pixel before writing the image signal, a variation in an electric potential of the pixel electrode, and display data to be newly displayed, the variation in the electric potential of the pixel electrode being in accordance with a variation in the electric potential of the common electrode changed into the pulse shape, a variation in the electric potential of the storage capacitor electrode changed into the pulse shape, or a variation in both the electric potentials of the common electrode and the storage capacitor electrode.
  - 251. The liquid crystal display device according to claim 245, wherein the comparison between the data and the variation in the electric potential is successively performed.
  - 257. The liquid crystal display device according to claim 245, wherein the comparison between the data and the variation in the electric potential is performed by use of a LUT (lookup table, correspondence table) prepared in advance.
  - 263. The liquid crystal display device according to claim 1, using twisted nematic liquid crystal, wherein a pulse-shaped change without reset restricts an average tilt angle of the liquid crystal to 81 degrees or less, while the pulse-shaped change is applied.
  - 269. The liquid crystal display device according to claim 263, wherein the pulse-shaped change without reset restricts the average tilt angle of the liquid crystal to 65 degrees or less, while the pulse-shaped change is applied.
  - 275. The liquid crystal display device according to claim 1, wherein:
    - an image signal is used as a digital signal;
      
      an electric potential applied to a display material is a binary signal; and
      
      display is carried out by optical integrated digital drive that expresses gray level in a time-base direction.
  - 281. A near-eye device using the liquid crystal display device according to claim 1.
  - 287. A projection device for projecting an original image of a display device by a projection optical system, using the liquid crystal display device according to claim 1.
  - 293. A mobile terminal using the liquid crystal display device according to claim 1.
  - 299. A monitor device using the liquid crystal display device according to claim 1.
  - 305. A display device for a vehicle using the liquid crystal display device according to claim 1.

2. A liquid crystal display device comprising:
- a liquid crystal display section having scan electrodes, image signal electrodes, a plurality of pixel electrodes arranged in a matrix, a plurality of switching elements for transmitting an image signal to the pixel electrodes, and a storage capacitor electrode;
  
  an image signal drive circuit;
  
  a scan signal drive circuit;
  
  a synchronous circuit; and
  
  a storage capacitor electrode potential control circuit for changing an electric potential of the storage capacitor electrode into a pulse shape, after the scan signal drive circuit has scanned all the scan electrodes and the image signal has been transmitted to the pixel electrodes.
- View Dependent Claims (11, 19, 24, 30, 36, 42, 48, 54, 60, 66, 72, 78, 84, 90, 96, 102, 108, 114, 120, 126, 132, 138, 144, 150, 156, 162, 168, 174, 180, 186, 192, 198, 204, 210, 216, 222, 228, 234, 240, 246, 252, 258, 264, 270, 276, 282, 288, 294, 300, 306)
- - 11. The liquid crystal display device according to claim 2, wherein the electric potential of the storage capacitor electrode changed into the pulse shape does not reset display of the liquid crystal display section.
  - 19. The liquid crystal display device according to claim 2, wherein the electric potential of the storage capacitor electrode changes among at least three potentials.
  - 24. The liquid crystal display device according to claim 2, wherein the electric potential of the common electrode or the electric potential of the storage capacitor electrode is changed into the pulse shape in a direction of temporarily increasing a potential difference between the pixel electrode and the common electrode or between the pixel electrode and the storage capacitor electrode.
  - 30. The liquid crystal display device according to claim 2, wherein an electric potential of the image signal is different from an electric potential of the image signal in a stable display state during static drive, in consideration with response characteristics of the display section during electric charge hold drive.
  - 36. The liquid crystal display device according to claim 30, wherein the electric potential of the image signal is determined by considering the response characteristics of the display section, and by comparing hold data of each pixel before writing the image signal with display data to be newly displayed.
  - 42. The liquid crystal display device according to claim 2, wherein an electric field response material is sandwiched between the pixel electrode and the common electrode of the display section.
  - 48. The liquid crystal display device according to claim 42, wherein the electric field response material comprises a liquid crystal material.
  - 54. The liquid crystal display device according to claim 48, wherein the liquid crystal material is nematic liquid crystal, and is in twisted nematic alignment.
  - 60. The liquid crystal display device according to claim 54, wherein a relation of p/d<
    - 20 holds between a twist pitch p (μ
      
      m) of the liquid crystal material in the twisted nematic alignment and an average thickness d (μ
      
      m) of a liquid crystal material layer in the twisted nematic alignment.
  - 66. The liquid crystal display device according to claim 60, wherein a relation of p/d<
    - 8 holds between the twist pitch p (μ
      
      m) of the liquid crystal material in the twisted nematic alignment and the average thickness d (μ
      
      m) of the liquid crystal material layer in the twisted nematic alignment.
  - 72. The liquid crystal display device according to claim 60, wherein the liquid crystal material in the twisted nematic alignment is polymerically stabilized to have an almost continuously twisted structure.
  - 78. The liquid crystal display device according to claim 48, wherein the liquid crystal material is in a voltage control birefringent mode.
  - 84. The liquid crystal display device according to claim 48, wherein the liquid crystal material is in pi-alignment (bend alignment).
  - 90. The liquid crystal display device according to claim 84, using an optical compensation flim, and being in an OCB (optical compensated birefringence) mode.
  - 96. The liquid crystal display device according to claim 48, wherein the liquid crystal material is in a VA (vertical alignment) mode in which the liquid crystal material is aligned in homeotropic manner.
  - 102. The liquid crystal display device according to claim 96, wherein the liquid crystal material is divided into multi-domains.
  - 108. The liquid crystal display device according to claim 48, wherein the liquid crystal material is in an IPS (in-plane switching) mode, such that the liquid crystal material responds to an electric field approximately in parallel with the surface of a substrate in the IPS mode.
  - 114. The liquid crystal display device according to claim 48, wherein the liquid crystal material is in a FFS (fringe field switching) mode or an AFFS (advanced fringe field switching) mode.
  - 120. The liquid crystal display device according to claim 48, wherein the liquid crystal material is a ferroelectric liquid crystal material, an anti-ferroelectric liquid crystal material, or a liquid crystal material showing an electroclinic response.
  - 126. The liquid crystal display device according to claim 48, wherein the liquid crystal material is a cholesteric liquid crystal material.
  - 132. The liquid crystal display device according to claim 48, wherein the liquid crystal material is polymerically stabilized to have a structure in a state without a voltage applied or with a low voltage applied.
  - 138. The liquid crystal display device according to claim 2, wherein the display section has a color filter to achieve color display.
  - 144. The liquid crystal display device according to claim 2, wherein the display section is provided with a lenticular lens sheet or a dual prism sheet to achieve stereoscopic display.
  - 150. The liquid crystal display device according to claim 2, being in a color field sequential (color time division) method, wherein an image signal is divided into a plurality of color image signals corresponding to a plurality of colors, a light source corresponding to the plurality of colors is synchronized with the plurality of color image signals with a predetermined phase difference, and the plurality of color image signals are successively displayed with time.
  - 156. The liquid crystal display device according to claim 150, being in a color field sequential (color time division) type of time division stereoscopic display method, wherein an image signal comprises an image signal for a right eye and an image signal for a left eye, the image signal for each eye is divided into a plurality of color image signals corresponding to a plurality of colors, light sources which correspond to the plurality of colors and are disposed in two positions are synchronized with the image signals for the respective eyes with a predetermined phase difference, the image signals for the respective eyes are successively displayed with time in synchronization with the plurality of color image signals, and the image signals for the respective eyes are successively displayed with time as the divided plurality of color image signals.
  - 162. The liquid crystal display device according to claim 2, being an amorphous silicon thin-film transistor display device, wherein a pixel switch comprises a thin-film transistor made of amorphous silicon.
  - 168. The liquid crystal display device according to claim 2, being a poly-silicon thin-film transistor display device, wherein a pixel switch comprises a thin-film transistor made of polycrystalline silicon.
  - 174. The liquid crystal display device according to claim 2, wherein a pixel switch comprises a transistor made of single crystal silicon.
  - 180. The liquid crystal display device according to claim 2, wherein the polarity of the image signal is reversed at a predetermined timing, and of a plurality of electric potentials among which the electric potential of the common electrode changes, one or two electric potentials applied for longer time than the other electric potentials is/are almost equal to an electric potential middle of a maximum electric potential and a minimum electric potential of all electric potentials applied as the image signal.
  - 186. The liquid crystal display device according to claim 2, wherein the polarity of the image signal is reversed at a predetermined timing, and of a plurality of electric potentials among which the electric potential of the common electrode changes, one or two electric potentials applied for longer time than the other electric potentials is/are almost equal to one of a maximum electric potential and a minimum electric potential of all electric potentials applied as the image signal.
  - 192. The liquid crystal display device according to claim 2, wherein the electric potential of the common electrode just before the scan signal drive circuit starts scanning a first scan electrode of the scan electrodes is equal to the electric potential of the common electrode just after the scan signal drive circuit has scanned all the scan electrodes and the image signal has been transmitted to the pixel electrode, and before the electric potential of the common electrode is changed into the pulse shape.
  - 198. The liquid crystal display device according to claim 2, wherein the electric potential of the common electrode just before the scan signal drive circuit starts scanning a first scan electrode of the scan electrodes is different from the electric potential of the common electrode just after the scan signal drive circuit has scanned all the scan electrodes and the image signal has been transmitted to the pixel electrode, and before the electric potential of the common electrode is changed into the pulse shape.
  - 204. The liquid crystal display device according to claim 198, wherein the electric potential of the common electrode just before the scan signal drive circuit starts scanning the first scan electrode of the scan electrodes is almost equal to one of a maximum electric potential and a minimum electric potential applied as an image signal to be applied after that, and the electric potential of the common electrode just after the scan signal drive circuit has scanned all the scan electrodes and the image signal has been transmitted to the pixel electrode and before being changed into the pulse shape is almost equal to the other of the maximum electric potential and the minimum electric potential having applied as the image signal.
  - 210. A method for driving the liquid crystal display device according to claim 2, wherein the electric potential of the common electrode is composed of four electric potentials, a first electric potential being the electric potential of the common electrode while the scan signal drive circuit scans the scan electrodes to transmit the reversed image signal with one polarity, a second electric potential being an electric potential of a pulse height section while the electric potential of the common electrode is changed into the pulse shape following the first electric potential, a third electric potential being an electric potential after the completion of the pulse when the electric potential of the common electrode has been changed into the pulse shape following the second electric potential, and being the electric potential of the common electrode while the scan signal drive circuit scans the scan electrodes to transmit the reversed image signal with the other polarity, and a fourth electric potential being an electric potential of a pulse height section while the electric potential of the common electrode is changed into the pulse shape following the third electric potential.
  - 216. A method for driving the liquid crystal display device according to claim 2, wherein the electric potential of the common electrode is composed of six potentials, a first electric potential being the electric potential of the common electrode while the scan signal drive circuit scans the scan electrodes to transmit a reversed image signal with one polarity, a second electric potential being an electric potential of a pulse height section while the electric potential of the common electrode is changed into the pulse shape following the first electric potential, a third electric potential being an electric potential after the completion of the pulse when the electric potential of the common electrode has been changed into the pulse shape following the second electric potential, a fourth electric potential being the electric potential of the common electrode while the scan signal drive circuit scans the scan electrodes to transmit the reversed image signal with the other polarity, a fifth electric potential being an electric potential of a pulse height section while the electric potential of the common electrode is changed into the pulse shape following the fourth electric potential, and a sixth electric potential being an electric potential after the completion of the pulse when the electric potential of the common electrode has been changed into the pulse shape following the fifth electric potential.
  - 222. The liquid crystal display device according to claim 2, having a light emitting section for emitting light to be incident on the display section, and a synchronous circuit for synchronously modulating a light intensity of the light emitting section with a predetermined phase with respect to the image signal.
  - 228. The liquid crystal display device according to claim 2, having a light emitting section for emitting light to be incident on the display section, and a synchronous circuit for synchronously changing the color of light of the light emitting section with a predetermined phase with respect to the image signal.
  - 234. The liquid crystal display device according to claim 2, having a light emitting section for emitting light to be incident on the display section, and a synchronous circuit for synchronously modulating a light intensity of light of the light emitting section with a predetermined phase with respect to the image signal, and for synchronously changing the color of light of the light emitting section with a predetermined phase with respect to the image signal.
  - 240. A method for driving the liquid crystal display device according to claim 2, wherein a timing of modulating the light intensity of the light emitting section or changing the color of light of the light emitting section is positioned at the end of each field or each subfield corresponding to the color when the field is divided into the subfields in accordance with a plurality of colors, and just before writing an image signal of the next field.
  - 246. The liquid crystal display device according to claim 2, wherein the electric potential of the image signal is determined by performing comparison among hold data of each pixel before writing the image signal, a variation in an electric potential of the pixel electrode, and display data to be newly displayed, the variation in the electric potential of the pixel electrode being in accordance with a variation in the electric potential of the common electrode changed into the pulse shape, a variation in the electric potential of the storage capacitor electrode changed into the pulse shape, or a variation in both the electric potentials of the common electrode and the storage capacitor electrode.
  - 252. The liquid crystal display device according to claim 246, wherein the comparison between the data and the variation in the electric potential is successively performed.
  - 258. The liquid crystal display device according to claim 246, wherein the comparison between the data and the variation in the electric potential is performed by use of a LUT (lookup table, correspondence table) prepared in advance.
  - 264. The liquid crystal display device according to claim 2, using twisted nematic liquid crystal, wherein a pulse-shaped change without reset restricts an average tilt angle of the liquid crystal to 81 degrees or less, while the pulse-shaped change is applied.
  - 270. The liquid crystal display device according to claim 264, wherein the pulse-shaped change without reset restricts the average tilt angle of the liquid crystal to 65 degrees or less, while the pulse-shaped change is applied.
  - 276. The liquid crystal display device according to claim 2, wherein:
    - an image signal is used as a digital signal;
      
      an electric potential applied to a display material is a binary signal; and
      
      display is carried out by optical integrated digital drive that expresses gray level in a time-base direction.
  - 282. A near-eye device using the liquid crystal display device according to claim 2.
  - 288. A projection device for projecting an original image of a display device by a projection optical system, using the liquid crystal display device according to claim 2.
  - 294. A mobile terminal using the liquid crystal display device according to claim 2.
  - 300. A monitor device using the liquid crystal display device according to claim 2.
  - 306. A display device for a vehicle using the liquid crystal display device according to claim 2.

3. A liquid crystal display device comprising:
- a liquid crystal display section having scan electrodes, image signal electrodes, a plurality of pixel electrodes arranged in a matrix, a plurality of switching elements for transmitting an image signal to the pixel electrodes, a common electrode, and a storage capacitor electrode;
  
  an image signal drive circuit;
  
  a scan signal drive circuit;
  
  a synchronous circuit;
  
  a common electrode potential control circuit for changing an electric potential of the common electrode into a pulse shape, after the scan signal drive circuit has scanned all the scan electrodes and the image signal has been transmitted to the pixel electrodes; and
  
  a storage capacitor electrode potential control circuit for changing an electric potential of the storage capacitor electrode into a pulse shape, after the scan signal drive circuit has scanned all the scan electrodes and the image signal has been transmitted to the pixel electrodes.
- View Dependent Claims (8, 12, 16, 20, 25, 31, 37, 43, 49, 55, 61, 67, 73, 79, 85, 91, 97, 103, 109, 115, 121, 127, 133, 139, 145, 151, 157, 163, 169, 175, 181, 187, 193, 199, 205, 211, 217, 223, 229, 235, 241, 247, 253, 259, 265, 271, 277, 283, 289, 295, 301, 307)
- - 8. The liquid crystal display device according to claim 3, wherein the electric potential of the common electrode changed into the pulse shape does not reset display of the liquid crystal display section.
  - 12. The liquid crystal display device according to claim 3, wherein the electric potential of the storage capacitor electrode changed into the pulse shape does not reset display of the liquid crystal display section.
  - 16. The liquid crystal display device according to claim 3, wherein the electric potential of the common electrode changes among at least three potentials.
  - 20. The liquid crystal display device according to claim 3, wherein the electric potential of the storage capacitor electrode changes among at least three potentials.
  - 25. The liquid crystal display device according to claim 3, wherein the electric potential of the common electrode or the electric potential of the storage capacitor electrode is changed into the pulse shape in a direction of temporarily increasing a potential difference between the pixel electrode and the common electrode or between the pixel electrode and the storage capacitor electrode.
  - 31. The liquid crystal display device according to claim 3, wherein an electric potential of the image signal is different from an electric potential of the image signal in a stable display state during static drive, in consideration with response characteristics of the display section during electric charge hold drive.
  - 37. The liquid crystal display device according to claim 31, wherein the electric potential of the image signal is determined by considering the response characteristics of the display section, and by comparing hold data of each pixel before writing the image signal with display data to be newly displayed.
  - 43. The liquid crystal display device according to claim 3, wherein an electric field response material is sandwiched between the pixel electrode and the common electrode of the display section.
  - 49. The liquid crystal display device according to claim 43, wherein the electric field response material comprises a liquid crystal material.
  - 55. The liquid crystal display device according to claim 49, wherein the liquid crystal material is nematic liquid crystal, and is in twisted nematic alignment.
  - 61. The liquid crystal display device according to claim 55, wherein a relation of p/d<
    - 20 holds between a twist pitch p (μ
      
      m) of the liquid crystal material in the twisted nematic alignment and an average thickness d (μ
      
      m) of a liquid crystal material layer in the twisted nematic alignment.
  - 67. The liquid crystal display device according to claim 61, wherein a relation of p/d<
    - 8 holds between the twist pitch p (μ
      
      m) of the liquid crystal material in the twisted nematic alignment and the average thickness d (μ
      
      m) of the liquid crystal material layer in the twisted nematic alignment.
  - 73. The liquid crystal display device according to claim 61, wherein the liquid crystal material in the twisted nematic alignment is polymerically stabilized to have an almost continuously twisted structure.
  - 79. The liquid crystal display device according to claim 49, wherein the liquid crystal material is in a voltage control birefringent mode.
  - 85. The liquid crystal display device according to claim 49, wherein the liquid crystal material is in pi-alignment (bend alignment).
  - 91. The liquid crystal display device according to claim 85, using an optical compensation flim, and being in an OCB (optical compensated birefringence) mode.
  - 97. The liquid crystal display device according to claim 49, wherein the liquid crystal material is in a VA (vertical alignment) mode in which the liquid crystal material is aligned in homeotropic manner.
  - 103. The liquid crystal display device according to claim 97, wherein the liquid crystal material is divided into multi-domains.
  - 109. The liquid crystal display device according to claim 49, wherein the liquid crystal material is in an IPS (in-plane switching) mode, such that the liquid crystal material responds to an electric field approximately in parallel with the surface of a substrate in the IPS mode.
  - 115. The liquid crystal display device according to claim 49, wherein the liquid crystal material is in a FFS (fringe field switching) mode or an AFFS (advanced fringe field switching) mode.
  - 121. The liquid crystal display device according to claim 49, wherein the liquid crystal material is a ferroelectric liquid crystal material, an anti-ferroelectric liquid crystal material, or a liquid crystal material showing an electroclinic response.
  - 127. The liquid crystal display device according to claim 49, wherein the liquid crystal material is a cholesteric liquid crystal material.
  - 133. The liquid crystal display device according to claim 49, wherein the liquid crystal material is polymerically stabilized to have a structure in a state without a voltage applied or with a low voltage applied.
  - 139. The liquid crystal display device according to claim 3, wherein the display section has a color filter to achieve color display.
  - 145. The liquid crystal display device according to claim 3, wherein the display section is provided with a lenticular lens sheet or a dual prism sheet to achieve stereoscopic display.
  - 151. The liquid crystal display device according to claim 3, being in a color field sequential (color time division) method, wherein an image signal is divided into a plurality of color image signals corresponding to a plurality of colors, a light source corresponding to the plurality of colors is synchronized with the plurality of color image signals with a predetermined phase difference, and the plurality of color image signals are successively displayed with time.
  - 157. The liquid crystal display device according to claim 151, being in a color field sequential (color time division) type of time division stereoscopic display method, wherein an image signal comprises an image signal for a right eye and an image signal for a left eye, the image signal for each eye is divided into a plurality of color image signals corresponding to a plurality of colors, light sources which correspond to the plurality of colors and are disposed in two positions are synchronized with the image signals for the respective eyes with a predetermined phase difference, the image signals for the respective eyes are successively displayed with time in synchronization with the plurality of color image signals, and the image signals for the respective eyes are successively displayed with time as the divided plurality of color image signals.
  - 163. The liquid crystal display device according to claim 3, being an amorphous silicon thin-film transistor display device, wherein a pixel switch comprises a thin-film transistor made of amorphous silicon.
  - 169. The liquid crystal display device according to claim 3, being a poly-silicon thin-film transistor display device, wherein a pixel switch comprises a thin-film transistor made of polycrystalline silicon.
  - 175. The liquid crystal display device according to claim 3, wherein a pixel switch comprises a transistor made of single crystal silicon.
  - 181. The liquid crystal display device according to claim 3, wherein the polarity of the image signal is reversed at a predetermined timing, and of a plurality of electric potentials among which the electric potential of the common electrode changes, one or two electric potentials applied for longer time than the other electric potentials is/are almost equal to an electric potential middle of a maximum electric potential and a minimum electric potential of all electric potentials applied as the image signal.
  - 187. The liquid crystal display device according to claim 3, wherein the polarity of the image signal is reversed at a predetermined timing, and of a plurality of electric potentials among which the electric potential of the common electrode changes, one or two electric potentials applied for longer time than the other electric potentials is/are almost equal to one of a maximum electric potential and a minimum electric potential of all electric potentials applied as the image signal.
  - 193. The liquid crystal display device according to claim 3, wherein the electric potential of the common electrode just before the scan signal drive circuit starts scanning a first scan electrode of the scan electrodes is equal to the electric potential of the common electrode just after the scan signal drive circuit has scanned all the scan electrodes and the image signal has been transmitted to the pixel electrode, and before the electric potential of the common electrode is changed into the pulse shape.
  - 199. The liquid crystal display device according to claim 3, wherein the electric potential of the common electrode just before the scan signal drive circuit starts scanning a first scan electrode of the scan electrodes is different from the electric potential of the common electrode just after the scan signal drive circuit has scanned all the scan electrodes and the image signal has been transmitted to the pixel electrode, and before the electric potential of the common electrode is changed into the pulse shape.
  - 205. The liquid crystal display device according to claim 199, wherein the electric potential of the common electrode just before the scan signal drive circuit starts scanning the first scan electrode of the scan electrodes is almost equal to one of a maximum electric potential and a minimum electric potential applied as an image signal to be applied after that, and the electric potential of the common electrode just after the scan signal drive circuit has scanned all the scan electrodes and the image signal has been transmitted to the pixel electrode and before being changed into the pulse shape is almost equal to the other of the maximum electric potential and the minimum electric potential having applied as the image signal.
  - 211. A method for driving the liquid crystal display device according to claim 3, wherein the electric potential of the common electrode is composed of four electric potentials, a first electric potential being the electric potential of the common electrode while the scan signal drive circuit scans the scan electrodes to transmit the reversed image signal with one polarity, a second electric potential being an electric potential of a pulse height section while the electric potential of the common electrode is changed into the pulse shape following the first electric potential, a third electric potential being an electric potential after the completion of the pulse when the electric potential of the common electrode has been changed into the pulse shape following the second electric potential, and being the electric potential of the common electrode while the scan signal drive circuit scans the scan electrodes to transmit the reversed image signal with the other polarity, and a fourth electric potential being an electric potential of a pulse height section while the electric potential of the common electrode is changed into the pulse shape following the third electric potential.
  - 217. A method for driving the liquid crystal display device according to claim 3, wherein the electric potential of the common electrode is composed of six potentials, a first electric potential being the electric potential of the common electrode while the scan signal drive circuit scans the scan electrodes to transmit a reversed image signal with one polarity, a second electric potential being an electric potential of a pulse height section while the electric potential of the common electrode is changed into the pulse shape following the first electric potential, a third electric potential being an electric potential after the completion of the pulse when the electric potential of the common electrode has been changed into the pulse shape following the second electric potential, a fourth electric potential being the electric potential of the common electrode while the scan signal drive circuit scans the scan electrodes to transmit the reversed image signal with the other polarity, a fifth electric potential being an electric potential of a pulse height section while the electric potential of the common electrode is changed into the pulse shape following the fourth electric potential, and a sixth electric potential being an electric potential after the completion of the pulse when the electric potential of the common electrode has been changed into the pulse shape following the fifth electric potential.
  - 223. The liquid crystal display device according to claim 3, having a light emitting section for emitting light to be incident on the display section, and a synchronous circuit for synchronously modulating a light intensity of the light emitting section with a predetermined phase with respect to the image signal.
  - 229. The liquid crystal display device according to claim 3, having a light emitting section for emitting light to be incident on the display section, and a synchronous circuit for synchronously changing the color of light of the light emitting section with a predetermined phase with respect to the image signal.
  - 235. The liquid crystal display device according to claim 3, having a light emitting section for emitting light to be incident on the display section, and a synchronous circuit for synchronously modulating a light intensity of light of the light emitting section with a predetermined phase with respect to the image signal, and for synchronously changing the color of light of the light emitting section with a predetermined phase with respect to the image signal.
  - 241. A method for driving the liquid crystal display device according to claim 3, wherein a timing of modulating the light intensity of the light emitting section or changing the color of light of the light emitting section is positioned at the end of each field or each subfield corresponding to the color when the field is divided into the subfields in accordance with a plurality of colors, and just before writing an image signal of the next field.
  - 247. The liquid crystal display device according to claim 3, wherein the electric potential of the image signal is determined by performing comparison among hold data of each pixel before writing the image signal, a variation in an electric potential of the pixel electrode, and display data to be newly displayed, the variation in the electric potential of the pixel electrode being in accordance with a variation in the electric potential of the common electrode changed into the pulse shape, a variation in the electric potential of the storage capacitor electrode changed into the pulse shape, or a variation in both the electric potentials of the common electrode and the storage capacitor electrode.
  - 253. The liquid crystal display device according to claim 247, wherein the comparison between the data and the variation in the electric potential is successively performed.
  - 259. The liquid crystal display device according to claim 247, wherein the comparison between the data and the variation in the electric potential is performed by use of a LUT (lookup table, correspondence table) prepared in advance.
  - 265. The liquid crystal display device according to claim 3, using twisted nematic liquid crystal, wherein a pulse-shaped change without reset restricts an average tilt angle of the liquid crystal to 81 degrees or less, while the pulse-shaped change is applied.
  - 271. The liquid crystal display device according to claim 265, wherein the pulse-shaped change without reset restricts the average tilt angle of the liquid crystal to 65 degrees or less, while the pulse-shaped change is applied.
  - 277. The liquid crystal display device according to claim 3, wherein:
    - an image signal is used as a digital signal;
      
      an electric potential applied to a display material is a binary signal; and
      
      display is carried out by optical integrated digital drive that expresses gray level in a time-base direction.
  - 283. A near-eye device using the liquid crystal display device according to claim 3.
  - 289. A projection device for projecting an original image of a display device by a projection optical system, using the liquid crystal display device according to claim 3.
  - 295. A mobile terminal using the liquid crystal display device according to claim 3.
  - 301. A monitor device using the liquid crystal display device according to claim 3.
  - 307. A display device for a vehicle using the liquid crystal display device according to claim 3.

4. A liquid crystal display device comprising:
- a liquid crystal display section having scan electrodes, image signal electrodes, a plurality of pixel electrodes arranged in a matrix, a plurality of switching elements for transmitting an image signal to the pixel electrodes, and a plurality of common electrodes electrically separated from one another;
  
  an image signal drive circuit;
  
  a scan signal drive circuit;
  
  a synchronous circuit; and
  
  a common electrode potential control circuit for changing an electric potential of part of the common electrodes into a pulse shape after the scan signal drive circuit has scanned part of the scan electrodes and the image signal has been transmitted to the pixel electrodes, said part of the common electrodes being corresponding to the scan electrodes scanned by the scan signal drive circuit.
- View Dependent Claims (9, 17, 26, 32, 38, 44, 50, 56, 62, 68, 74, 80, 86, 92, 98, 104, 110, 116, 122, 128, 134, 140, 146, 152, 158, 164, 170, 176, 182, 188, 194, 200, 206, 212, 218, 224, 230, 236, 242, 248, 254, 260, 266, 272, 278, 284, 290, 296, 302, 308)
- - 9. The liquid crystal display device according to claim 4, wherein the electric potential of the common electrode changed into the pulse shape does not reset display of the liquid crystal display section.
  - 17. The liquid crystal display device according to claim 4, wherein the electric potential of the common electrode changes among at least three potentials.
  - 26. The liquid crystal display device according to claim 4, wherein the electric potential of the common electrode or the electric potential of the storage capacitor electrode is changed into the pulse shape in a direction of temporarily increasing a potential difference between the pixel electrode and the common electrode or between the pixel electrode and the storage capacitor electrode.
  - 32. The liquid crystal display device according to claim 4, wherein an electric potential of the image signal is different from an electric potential of the image signal in a stable display state during static drive, in consideration with response characteristics of the display section during electric charge hold drive.
  - 38. The liquid crystal display device according to claim 32, wherein the electric potential of the image signal is determined by considering the response characteristics of the display section, and by comparing hold data of each pixel before writing the image signal with display data to be newly displayed.
  - 44. The liquid crystal display device according to claim 4, wherein an electric field response material is sandwiched between the pixel electrode and the common electrode of the display section.
  - 50. The liquid crystal display device according to claim 44, wherein the electric field response material comprises a liquid crystal material.
  - 56. The liquid crystal display device according to claim 50, wherein the liquid crystal material is nematic liquid crystal, and is in twisted nematic alignment.
  - 62. The liquid crystal display device according to claim 56, wherein a relation of p/d<
    - 20 holds between a twist pitch p (μ
      
      m) of the liquid crystal material in the twisted nematic alignment and an average thickness d (μ
      
      m) of a liquid crystal material layer in the twisted nematic alignment.
  - 68. The liquid crystal display device according to claim 62, wherein a relation of p/d<
    - 8 holds between the twist pitch p (μ
      
      m) of the liquid crystal material in the twisted nematic alignment and the average thickness d (μ
      
      m) of the liquid crystal material layer in the twisted nematic alignment.
  - 74. The liquid crystal display device according to claim 62, wherein the liquid crystal material in the twisted nematic alignment is polymerically stabilized to have an almost continuously twisted structure.
  - 80. The liquid crystal display device according to claim 50, wherein the liquid crystal material is in a voltage control birefringent mode.
  - 86. The liquid crystal display device according to claim 50, wherein the liquid crystal material is in pi-alignment (bend alignment).
  - 92. The liquid crystal display device according to claim 86, using an optical compensation flim, and being in an OCB (optical compensated birefringence) mode.
  - 98. The liquid crystal display device according to claim 50, wherein the liquid crystal material is in a VA (vertical alignment) mode in which the liquid crystal material is aligned in homeotropic manner.
  - 104. The liquid crystal display device according to claim 98, wherein the liquid crystal material is divided into multi-domains.
  - 110. The liquid crystal display device according to claim 50, wherein the liquid crystal material is in an IPS (in-plane switching) mode, such that the liquid crystal material responds to an electric field approximately in parallel with the surface of a substrate in the IPS mode.
  - 116. The liquid crystal display device according to claim 50, wherein the liquid crystal material is in a FFS (fringe field switching) mode or an AFFS (advanced fringe field switching) mode.
  - 122. The liquid crystal display device according to claim 50, wherein the liquid crystal material is a ferroelectric liquid crystal material, an anti-ferroelectric liquid crystal material, or a liquid crystal material showing an electroclinic response.
  - 128. The liquid crystal display device according to claim 50, wherein the liquid crystal material is a cholesteric liquid crystal material.
  - 134. The liquid crystal display device according to claim 50, wherein the liquid crystal material is polymerically stabilized to have a structure in a state without a voltage applied or with a low voltage applied.
  - 140. The liquid crystal display device according to claim 4, wherein the display section has a color filter to achieve color display.
  - 146. The liquid crystal display device according to claim 4, wherein the display section is provided with a lenticular lens sheet or a dual prism sheet to achieve stereoscopic display.
  - 152. The liquid crystal display device according to claim 4, being in a color field sequential (color time division) method, wherein an image signal is divided into a plurality of color image signals corresponding to a plurality of colors, a light source corresponding to the plurality of colors is synchronized with the plurality of color image signals with a predetermined phase difference, and the plurality of color image signals are successively displayed with time.
  - 158. The liquid crystal display device according to claim 152, being in a color field sequential (color time division) type of time division stereoscopic display method, wherein an image signal comprises an image signal for a right eye and an image signal for a left eye, the image signal for each eye is divided into a plurality of color image signals corresponding to a plurality of colors, light sources which correspond to the plurality of colors and are disposed in two positions are synchronized with the image signals for the respective eyes with a predetermined phase difference, the image signals for the respective eyes are successively displayed with time in synchronization with the plurality of color image signals, and the image signals for the respective eyes are successively displayed with time as the divided plurality of color image signals.
  - 164. The liquid crystal display device according to claim 4, being an amorphous silicon thin-film transistor display device, wherein a pixel switch comprises a thin-film transistor made of amorphous silicon.
  - 170. The liquid crystal display device according to claim 4, being a poly-silicon thin-film transistor display device, wherein a pixel switch comprises a thin-film transistor made of polycrystalline silicon.
  - 176. The liquid crystal display device according to claim 4, wherein a pixel switch comprises a transistor made of single crystal silicon.
  - 182. The liquid crystal display device according to claim 4, wherein the polarity of the image signal is reversed at a predetermined timing, and of a plurality of electric potentials among which the electric potential of the common electrode changes, one or two electric potentials applied for longer time than the other electric potentials is/are almost equal to an electric potential middle of a maximum electric potential and a minimum electric potential of all electric potentials applied as the image signal.
  - 188. The liquid crystal display device according to claim 4, wherein the polarity of the image signal is reversed at a predetermined timing, and of a plurality of electric potentials among which the electric potential of the common electrode changes, one or two electric potentials applied for longer time than the other electric potentials is/are almost equal to one of a maximum electric potential and a minimum electric potential of all electric potentials applied as the image signal.
  - 194. The liquid crystal display device according to claim 4, wherein the electric potential of the common electrode just before the scan signal drive circuit starts scanning a first scan electrode of the scan electrodes is equal to the electric potential of the common electrode just after the scan signal drive circuit has scanned all the scan electrodes and the image signal has been transmitted to the pixel electrode, and before the electric potential of the common electrode is changed into the pulse shape.
  - 200. The liquid crystal display device according to claim 4, wherein the electric potential of the common electrode just before the scan signal drive circuit starts scanning a first scan electrode of the scan electrodes is different from the electric potential of the common electrode just after the scan signal drive circuit has scanned all the scan electrodes and the image signal has been transmitted to the pixel electrode, and before the electric potential of the common electrode is changed into the pulse shape.
  - 206. The liquid crystal display device according to claim 200, wherein the electric potential of the common electrode just before the scan signal drive circuit starts scanning the first scan electrode of the scan electrodes is almost equal to one of a maximum electric potential and a minimum electric potential applied as an image signal to be applied after that, and the electric potential of the common electrode just after the scan signal drive circuit has scanned all the scan electrodes and the image signal has been transmitted to the pixel electrode and before being changed into the pulse shape is almost equal to the other of the maximum electric potential and the minimum electric potential having applied as the image signal.
  - 212. A method for driving the liquid crystal display device according to claim 4, wherein the electric potential of the common electrode is composed of four electric potentials, a first electric potential being the electric potential of the common electrode while the scan signal drive circuit scans the scan electrodes to transmit the reversed image signal with one polarity, a second electric potential being an electric potential of a pulse height section while the electric potential of the common electrode is changed into the pulse shape following the first electric potential, a third electric potential being an electric potential after the completion of the pulse when the electric potential of the common electrode has been changed into the pulse shape following the second electric potential, and being the electric potential of the common electrode while the scan signal drive circuit scans the scan electrodes to transmit the reversed image signal with the other polarity, and a fourth electric potential being an electric potential of a pulse height section while the electric potential of the common electrode is changed into the pulse shape following the third electric potential.
  - 218. A method for driving the liquid crystal display device according to claim 4, wherein the electric potential of the common electrode is composed of six potentials, a first electric potential being the electric potential of the common electrode while the scan signal drive circuit scans the scan electrodes to transmit a reversed image signal with one polarity, a second electric potential being an electric potential of a pulse height section while the electric potential of the common electrode is changed into the pulse shape following the first electric potential, a third electric potential being an electric potential after the completion of the pulse when the electric potential of the common electrode has been changed into the pulse shape following the second electric potential, a fourth electric potential being the electric potential of the common electrode while the scan signal drive circuit scans the scan electrodes to transmit the reversed image signal with the other polarity, a fifth electric potential being an electric potential of a pulse height section while the electric potential of the common electrode is changed into the pulse shape following the fourth electric potential, and a sixth electric potential being an electric potential after the completion of the pulse when the electric potential of the common electrode has been changed into the pulse shape following the fifth electric potential.
  - 224. The liquid crystal display device according to claim 4, having a light emitting section for emitting light to be incident on the display section, and a synchronous circuit for synchronously modulating a light intensity of the light emitting section with a predetermined phase with respect to the image signal.
  - 230. The liquid crystal display device according to claim 4, having a light emitting section for emitting light to be incident on the display section, and a synchronous circuit for synchronously changing the color of light of the light emitting section with a predetermined phase with respect to the image signal.
  - 236. The liquid crystal display device according to claim 4, having a light emitting section for emitting light to be incident on the display section, and a synchronous circuit for synchronously modulating a light intensity of light of the light emitting section with a predetermined phase with respect to the image signal, and for synchronously changing the color of light of the light emitting section with a predetermined phase with respect to the image signal.
  - 242. A method for driving the liquid crystal display device according to claim 4, wherein a timing of modulating the light intensity of the light emitting section or changing the color of light of the light emitting section is positioned at the end of each field or each subfield corresponding to the color when the field is divided into the subfields in accordance with a plurality of colors, and just before writing an image signal of the next field.
  - 248. The liquid crystal display device according to claim 4, wherein the electric potential of the image signal is determined by performing comparison among hold data of each pixel before writing the image signal, a variation in an electric potential of the pixel electrode, and display data to be newly displayed, the variation in the electric potential of the pixel electrode being in accordance with a variation in the electric potential of the common electrode changed into the pulse shape, a variation in the electric potential of the storage capacitor electrode changed into the pulse shape, or a variation in both the electric potentials of the common electrode and the storage capacitor electrode.
  - 254. The liquid crystal display device according to claim 248, wherein the comparison between the data and the variation in the electric potential is successively performed.
  - 260. The liquid crystal display device according to claim 248, wherein the comparison between the data and the variation in the electric potential is performed by use of a LUT (lookup table, correspondence table) prepared in advance.
  - 266. The liquid crystal display device according to claim 4, using twisted nematic liquid crystal, wherein a pulse-shaped change without reset restricts an average tilt angle of the liquid crystal to 81 degrees or less, while the pulse-shaped change is applied.
  - 272. The liquid crystal display device according to claim 266, wherein the pulse-shaped change without reset restricts the average tilt angle of the liquid crystal to 65 degrees or less, while the pulse-shaped change is applied.
  - 278. The liquid crystal display device according to claim 4, wherein:
    - an image signal is used as a digital signal;
      
      an electric potential applied to a display material is a binary signal; and
      
      display is carried out by optical integrated digital drive that expresses gray level in a time-base direction.
  - 284. A near-eye device using the liquid crystal display device according to claim 4.
  - 290. A projection device for projecting an original image of a display device by a projection optical system, using the liquid crystal display device according to claim 4.
  - 296. A mobile terminal using the liquid crystal display device according to claim 4.
  - 302. A monitor device using the liquid crystal display device according to claim 4.
  - 308. A display device for a vehicle using the liquid crystal display device according to claim 4.

5. A liquid crystal display device comprising:
- a liquid crystal display section having scan electrodes, image signal electrodes, a plurality of pixel electrodes arranged in a matrix, a plurality of switching elements for transmitting an image signal to the pixel electrodes, and a plurality of storage capacitor electrodes electrically separated from one another;
  
  an image signal drive circuit;
  
  a scan signal drive circuit;
  
  a synchronous circuit; and
  
  a storage capacitor electrode potential control circuit for changing an electric potential of part of the storage capacitor electrodes into a pulse shape after the scan signal drive circuit has scanned part of the scan electrodes and the image signal has been transmitted to the pixel electrodes, said part of the storage capacitor electrodes being corresponding to the scan electrodes scanned by the scan signal drive circuit.
- View Dependent Claims (13, 21, 27, 33, 39, 45, 51, 57, 63, 69, 75, 81, 87, 93, 99, 105, 111, 117, 123, 129, 135, 141, 147, 153, 159, 165, 171, 177, 183, 189, 195, 201, 207, 213, 219, 225, 231, 237, 243, 249, 255, 261, 267, 273, 279, 285, 291, 297, 303, 309)
- - 13. The liquid crystal display device according to claim 5, wherein the electric potential of the storage capacitor electrode changed into the pulse shape does not reset display of the liquid crystal display section.
  - 21. The liquid crystal display device according to claim 5, wherein the electric potential of the storage capacitor electrode changes among at least three potentials.
  - 27. The liquid crystal display device according to claim 5, wherein the electric potential of the common electrode or the electric potential of the storage capacitor electrode is changed into the pulse shape in a direction of temporarily increasing a potential difference between the pixel electrode and the common electrode or between the pixel electrode and the storage capacitor electrode.
  - 33. The liquid crystal display device according to claim 5, wherein an electric potential of the image signal is different from an electric potential of the image signal in a stable display state during static drive, in consideration with response characteristics of the display section during electric charge hold drive.
  - 39. The liquid crystal display device according to claim 33, wherein the electric potential of the image signal is determined by considering the response characteristics of the display section, and by comparing hold data of each pixel before writing the image signal with display data to be newly displayed.
  - 45. The liquid crystal display device according to claim 5, wherein an electric field response material is sandwiched between the pixel electrode and the common electrode of the display section.
  - 51. The liquid crystal display device according to claim 45, wherein the electric field response material comprises a liquid crystal material.
  - 57. The liquid crystal display device according to claim 51, wherein the liquid crystal material is nematic liquid crystal, and is in twisted nematic alignment.
  - 63. The liquid crystal display device according to claim 57, wherein a relation of p/d<
    - 20 holds between a twist pitch p (μ
      
      m) of the liquid crystal material in the twisted nematic alignment and an average thickness d (μ
      
      m) of a liquid crystal material layer in the twisted nematic alignment.
  - 69. The liquid crystal display device according to claim 63, wherein a relation of p/d<
    - 8 holds between the twist pitch p (μ
      
      m) of the liquid crystal material in the twisted nematic alignment and the average thickness d (μ
      
      m) of the liquid crystal material layer in the twisted nematic alignment.
  - 75. The liquid crystal display device according to claim 63, wherein the liquid crystal material in the twisted nematic alignment is polymerically stabilized to have an almost continuously twisted structure.
  - 81. The liquid crystal display device according to claim 51, wherein the liquid crystal material is in a voltage control birefringent mode.
  - 87. The liquid crystal display device according to claim 51, wherein the liquid crystal material is in pi-alignment (bend alignment).
  - 93. The liquid crystal display device according to claim 87, using an optical compensation flim, and being in an OCB (optical compensated birefringence) mode.
  - 99. The liquid crystal display device according to claim 51, wherein the liquid crystal material is in a VA (vertical alignment) mode in which the liquid crystal material is aligned in homeotropic manner.
  - 105. The liquid crystal display device according to claim 99, wherein the liquid crystal material is divided into multi-domains.
  - 111. The liquid crystal display device according to claim 51, wherein the liquid crystal material is in an IPS (in-plane switching) mode, such that the liquid crystal material responds to an electric field approximately in parallel with the surface of a substrate in the IPS mode.
  - 117. The liquid crystal display device according to claim 51, wherein the liquid crystal material is in a FFS (fringe field switching) mode or an AFFS (advanced fringe field switching) mode.
  - 123. The liquid crystal display device according to claim 51, wherein the liquid crystal material is a ferroelectric liquid crystal material, an anti-ferroelectric liquid crystal material, or a liquid crystal material showing an electroclinic response.
  - 129. The liquid crystal display device according to claim 51, wherein the liquid crystal material is a cholesteric liquid crystal material.
  - 135. The liquid crystal display device according to claim 51, wherein the liquid crystal material is polymerically stabilized to have a structure in a state without a voltage applied or with a low voltage applied.
  - 141. The liquid crystal display device according to claim 5, wherein the display section has a color filter to achieve color display.
  - 147. The liquid crystal display device according to claim 5, wherein the display section is provided with a lenticular lens sheet or a dual prism sheet to achieve stereoscopic display.
  - 153. The liquid crystal display device according to claim 5, being in a color field sequential (color time division) method, wherein an image signal is divided into a plurality of color image signals corresponding to a plurality of colors, a light source corresponding to the plurality of colors is synchronized with the plurality of color image signals with a predetermined phase difference, and the plurality of color image signals are successively displayed with time.
  - 159. The liquid crystal display device according to claim 153, being in a color field sequential (color time division) type of time division stereoscopic display method, wherein an image signal comprises an image signal for a right eye and an image signal for a left eye, the image signal for each eye is divided into a plurality of color image signals corresponding to a plurality of colors, light sources which correspond to the plurality of colors and are disposed in two positions are synchronized with the image signals for the respective eyes with a predetermined phase difference, the image signals for the respective eyes are successively displayed with time in synchronization with the plurality of color image signals, and the image signals for the respective eyes are successively displayed with time as the divided plurality of color image signals.
  - 165. The liquid crystal display device according to claim 5, being an amorphous silicon thin-film transistor display device, wherein a pixel switch comprises a thin-film transistor made of amorphous silicon.
  - 171. The liquid crystal display device according to claim 5, being a poly-silicon thin-film transistor display device, wherein a pixel switch comprises a thin-film transistor made of polycrystalline silicon.
  - 177. The liquid crystal display device according to claim 5, wherein a pixel switch comprises a transistor made of single crystal silicon.
  - 183. The liquid crystal display device according to claim 5, wherein the polarity of the image signal is reversed at a predetermined timing, and of a plurality of electric potentials among which the electric potential of the common electrode changes, one or two electric potentials applied for longer time than the other electric potentials is/are almost equal to an electric potential middle of a maximum electric potential and a minimum electric potential of all electric potentials applied as the image signal.
  - 189. The liquid crystal display device according to claim 5, wherein the polarity of the image signal is reversed at a predetermined timing, and of a plurality of electric potentials among which the electric potential of the common electrode changes, one or two electric potentials applied for longer time than the other electric potentials is/are almost equal to one of a maximum electric potential and a minimum electric potential of all electric potentials applied as the image signal.
  - 195. The liquid crystal display device according to claim 5, wherein the electric potential of the common electrode just before the scan signal drive circuit starts scanning a first scan electrode of the scan electrodes is equal to the electric potential of the common electrode just after the scan signal drive circuit has scanned all the scan electrodes and the image signal has been transmitted to the pixel electrode, and before the electric potential of the common electrode is changed into the pulse shape.
  - 201. The liquid crystal display device according to claim 5, wherein the electric potential of the common electrode just before the scan signal drive circuit starts scanning a first scan electrode of the scan electrodes is different from the electric potential of the common electrode just after the scan signal drive circuit has scanned all the scan electrodes and the image signal has been transmitted to the pixel electrode, and before the electric potential of the common electrode is changed into the pulse shape.
  - 207. The liquid crystal display device according to claim 201, wherein the electric potential of the common electrode just before the scan signal drive circuit starts scanning the first scan electrode of the scan electrodes is almost equal to one of a maximum electric potential and a minimum electric potential applied as an image signal to be applied after that, and the electric potential of the common electrode just after the scan signal drive circuit has scanned all the scan electrodes and the image signal has been transmitted to the pixel electrode and before being changed into the pulse shape is almost equal to the other of the maximum electric potential and the minimum electric potential having applied as the image signal.
  - 213. A method for driving the liquid crystal display device according to claim 5, wherein the electric potential of the common electrode is composed of four electric potentials, a first electric potential being the electric potential of the common electrode while the scan signal drive circuit scans the scan electrodes to transmit the reversed image signal with one polarity, a second electric potential being an electric potential of a pulse height section while the electric potential of the common electrode is changed into the pulse shape following the first electric potential, a third electric potential being an electric potential after the completion of the pulse when the electric potential of the common electrode has been changed into the pulse shape following the second electric potential, and being the electric potential of the common electrode while the scan signal drive circuit scans the scan electrodes to transmit the reversed image signal with the other polarity, and a fourth electric potential being an electric potential of a pulse height section while the electric potential of the common electrode is changed into the pulse shape following the third electric potential.
  - 219. A method for driving the liquid crystal display device according to claim 5, wherein the electric potential of the common electrode is composed of six potentials, a first electric potential being the electric potential of the common electrode while the scan signal drive circuit scans the scan electrodes to transmit a reversed image signal with one polarity, a second electric potential being an electric potential of a pulse height section while the electric potential of the common electrode is changed into the pulse shape following the first electric potential, a third electric potential being an electric potential after the completion of the pulse when the electric potential of the common electrode has been changed into the pulse shape following the second electric potential, a fourth electric potential being the electric potential of the common electrode while the scan signal drive circuit scans the scan electrodes to transmit the reversed image signal with the other polarity, a fifth electric potential being an electric potential of a pulse height section while the electric potential of the common electrode is changed into the pulse shape following the fourth electric potential, and a sixth electric potential being an electric potential after the completion of the pulse when the electric potential of the common electrode has been changed into the pulse shape following the fifth electric potential.
  - 225. The liquid crystal display device according to claim 5, having a light emitting section for emitting light to be incident on the display section, and a synchronous circuit for synchronously modulating a light intensity of the light emitting section with a predetermined phase with respect to the image signal.
  - 231. The liquid crystal display device according to claim 5, having a light emitting section for emitting light to be incident on the display section, and a synchronous circuit for synchronously changing the color of light of the light emitting section with a predetermined phase with respect to the image signal.
  - 237. The liquid crystal display device according to claim 5, having a light emitting section for emitting light to be incident on the display section, and a synchronous circuit for synchronously modulating a light intensity of light of the light emitting section with a predetermined phase with respect to the image signal, and for synchronously changing the color of light of the light emitting section with a predetermined phase with respect to the image signal.
  - 243. A method for driving the liquid crystal display device according to claim 5, wherein a timing of modulating the light intensity of the light emitting section or changing the color of light of the light emitting section is positioned at the end of each field or each subfield corresponding to the color when the field is divided into the subfields in accordance with a plurality of colors, and just before writing an image signal of the next field.
  - 249. The liquid crystal display device according to claim 5, wherein the electric potential of the image signal is determined by performing comparison among hold data of each pixel before writing the image signal, a variation in an electric potential of the pixel electrode, and display data to be newly displayed, the variation in the electric potential of the pixel electrode being in accordance with a variation in the electric potential of the common electrode changed into the pulse shape, a variation in the electric potential of the storage capacitor electrode changed into the pulse shape, or a variation in both the electric potentials of the common electrode and the storage capacitor electrode.
  - 255. The liquid crystal display device according to claim 249, wherein the comparison between the data and the variation in the electric potential is successively performed.
  - 261. The liquid crystal display device according to claim 249, wherein the comparison between the data and the variation in the electric potential is performed by use of a LUT (lookup table, correspondence table) prepared in advance.
  - 267. The liquid crystal display device according to claim 5, using twisted nematic liquid crystal, wherein a pulse-shaped change without reset restricts an average tilt angle of the liquid crystal to 81 degrees or less, while the pulse-shaped change is applied.
  - 273. The liquid crystal display device according to claim 267, wherein the pulse-shaped change without reset restricts the average tilt angle of the liquid crystal to 65 degrees or less, while the pulse-shaped change is applied.
  - 279. The liquid crystal display device according to claim 5, wherein:
    - an image signal is used as a digital signal;
      
      an electric potential applied to a display material is a binary signal; and
      
      display is carried out by optical integrated digital drive that expresses gray level in a time-base direction.
  - 285. A near-eye device using the liquid crystal display device according to claim 5.
  - 291. A projection device for projecting an original image of a display device by a projection optical system, using the liquid crystal display device according to claim 5.
  - 297. A mobile terminal using the liquid crystal display device according to claim 5.
  - 303. A monitor device using the liquid crystal display device according to claim 5.
  - 309. A display device for a vehicle using the liquid crystal display device according to claim 5.

6. A liquid crystal display device comprising:
- a liquid crystal display section having scan electrodes, image signal electrodes, a plurality of pixel electrodes arranged in a matrix, a plurality of switching elements for transmitting an image signal to the pixel electrodes, a plurality of common electrodes electrically separated from one another, and a plurality of storage capacitor electrodes electrically separated from one another;
  
  an image signal drive circuit;
  
  a scan signal drive circuit;
  
  a synchronous circuit;
  
  a common electrode potential control circuit for changing an electric potential of part of the common electrodes into a pulse shape after the scan signal drive circuit has scanned part of the scan electrodes and the image signal has been transmitted to the pixel electrodes, said part of the common electrodes being corresponding to the scan electrodes scanned by the scan signal drive circuit; and
  
  a storage capacitor electrode potential control circuit for changing an electric potential of part of the storage capacitor electrodes into a pulse shape after the scan signal drive circuit has scanned part of the scan electrodes and the image signal has been transmitted to the pixel electrodes, said part of the storage capacitor electrodes being corresponding to the scan electrodes scanned by the scan signal drive circuit.
- View Dependent Claims (10, 14, 18, 22, 28, 34, 40, 46, 52, 58, 64, 70, 76, 82, 88, 94, 100, 106, 112, 118, 124, 130, 136, 142, 148, 154, 160, 166, 172, 178, 184, 190, 196, 202, 208, 214, 220, 226, 232, 238, 244, 250, 256, 262, 268, 274, 280, 286, 292, 298, 304, 310)
- - 10. The liquid crystal display device according to claim 6, wherein the electric potential of the common electrode changed into the pulse shape does not reset display of the liquid crystal display section.
  - 14. The liquid crystal display device according to claim 6, wherein the electric potential of the storage capacitor electrode changed into the pulse shape does not reset display of the liquid crystal display section.
  - 18. The liquid crystal display device according to claim 6, wherein the electric potential of the common electrode changes among at least three potentials.
  - 22. The liquid crystal display device according to claim 6, wherein the electric potential of the storage capacitor electrode changes among at least three potentials.
  - 28. The liquid crystal display device according to claim 6, wherein the electric potential of the common electrode or the electric potential of the storage capacitor electrode is changed into the pulse shape in a direction of temporarily increasing a potential difference between the pixel electrode and the common electrode or between the pixel electrode and the storage capacitor electrode.
  - 34. The liquid crystal display device according to claim 6, wherein an electric potential of the image signal is different from an electric potential of the image signal in a stable display state during static drive, in consideration with response characteristics of the display section during electric charge hold drive.
  - 40. The liquid crystal display device according to claim 34, wherein the electric potential of the image signal is determined by considering the response characteristics of the display section, and by comparing hold data of each pixel before writing the image signal with display data to be newly displayed.
  - 46. The liquid crystal display device according to claim 6, wherein an electric field response material is sandwiched between the pixel electrode and the common electrode of the display section.
  - 52. The liquid crystal display device according to claim 46, wherein the electric field response material comprises a liquid crystal material.
  - 58. The liquid crystal display device according to claim 52, wherein the liquid crystal material is nematic liquid crystal, and is in twisted nematic alignment.
  - 64. The liquid crystal display device according to claim 58, wherein a relation of p/d<
    - 20 holds between a twist pitch p (μ
      
      m) of the liquid crystal material in the twisted nematic alignment and an average thickness d (μ
      
      m) of a liquid crystal material layer in the twisted nematic alignment.
  - 70. The liquid crystal display device according to claim 64, wherein a relation of p/d<
    - 8 holds between the twist pitch p (μ
      
      m) of the liquid crystal material in the twisted nematic alignment and the average thickness d (μ
      
      m) of the liquid crystal material layer in the twisted nematic alignment.
  - 76. The liquid crystal display device according to claim 64, wherein the liquid crystal material in the twisted nematic alignment is polymerically stabilized to have an almost continuously twisted structure.
  - 82. The liquid crystal display device according to claim 52, wherein the liquid crystal material is in a voltage control birefringent mode.
  - 88. The liquid crystal display device according to claim 52, wherein the liquid crystal material is in pi-alignment (bend alignment).
  - 94. The liquid crystal display device according to claim 88, using an optical compensation flim, and being in an OCB (optical compensated birefringence) mode.
  - 100. The liquid crystal display device according to claim 52, wherein the liquid crystal material is in a VA (vertical alignment) mode in which the liquid crystal material is aligned in homeotropic manner.
  - 106. The liquid crystal display device according to claim 100, wherein the liquid crystal material is divided into multi-domains.
  - 112. The liquid crystal display device according to claim 52, wherein the liquid crystal material is in an IPS (in-plane switching) mode, such that the liquid crystal material responds to an electric field approximately in parallel with the surface of a substrate in the IPS mode.
  - 118. The liquid crystal display device according to claim 52, wherein the liquid crystal material is in a FFS (fringe field switching) mode or an AFFS (advanced fringe field switching) mode.
  - 124. The liquid crystal display device according to claim 52, wherein the liquid crystal material is a ferroelectric liquid crystal material, an anti-ferroelectric liquid crystal material, or a liquid crystal material showing an electroclinic response.
  - 130. The liquid crystal display device according to claim 52, wherein the liquid crystal material is a cholesteric liquid crystal material.
  - 136. The liquid crystal display device according to claim 52, wherein the liquid crystal material is polymerically stabilized to have a structure in a state without a voltage applied or with a low voltage applied.
  - 142. The liquid crystal display device according to claim 6, wherein the display section has a color filter to achieve color display.
  - 148. The liquid crystal display device according to claim 6, wherein the display section is provided with a lenticular lens sheet or a dual prism sheet to achieve stereoscopic display.
  - 154. The liquid crystal display device according to claim 6, being in a color field sequential (color time division) method, wherein an image signal is divided into a plurality of color image signals corresponding to a plurality of colors, a light source corresponding to the plurality of colors is synchronized with the plurality of color image signals with a predetermined phase difference, and the plurality of color image signals are successively displayed with time.
  - 160. The liquid crystal display device according to claim 154, being in a color field sequential (color time division) type of time division stereoscopic display method, wherein an image signal comprises an image signal for a right eye and an image signal for a left eye, the image signal for each eye is divided into a plurality of color image signals corresponding to a plurality of colors, light sources which correspond to the plurality of colors and are disposed in two positions are synchronized with the image signals for the respective eyes with a predetermined phase difference, the image signals for the respective eyes are successively displayed with time in synchronization with the plurality of color image signals, and the image signals for the respective eyes are successively displayed with time as the divided plurality of color image signals.
  - 166. The liquid crystal display device according to claim 6, being an amorphous silicon thin-film transistor display device, wherein a pixel switch comprises a thin-film transistor made of amorphous silicon.
  - 172. The liquid crystal display device according to claim 6, being a poly-silicon thin-film transistor display device, wherein a pixel switch comprises a thin-film transistor made of polycrystalline silicon.
  - 178. The liquid crystal display device according to claim 6, wherein a pixel switch comprises a transistor made of single crystal silicon.
  - 184. The liquid crystal display device according to claim 6, wherein the polarity of the image signal is reversed at a predetermined timing, and of a plurality of electric potentials among which the electric potential of the common electrode changes, one or two electric potentials applied for longer time than the other electric potentials is/are almost equal to an electric potential middle of a maximum electric potential and a minimum electric potential of all electric potentials applied as the image signal.
  - 190. The liquid crystal display device according to claim 6, wherein the polarity of the image signal is reversed at a predetermined timing, and of a plurality of electric potentials among which the electric potential of the common electrode changes, one or two electric potentials applied for longer time than the other electric potentials is/are almost equal to one of a maximum electric potential and a minimum electric potential of all electric potentials applied as the image signal.
  - 196. The liquid crystal display device according to claim 6, wherein the electric potential of the common electrode just before the scan signal drive circuit starts scanning a first scan electrode of the scan electrodes is equal to the electric potential of the common electrode just after the scan signal drive circuit has scanned all the scan electrodes and the image signal has been transmitted to the pixel electrode, and before the electric potential of the common electrode is changed into the pulse shape.
  - 202. The liquid crystal display device according to claim 6, wherein the electric potential of the common electrode just before the scan signal drive circuit starts scanning a first scan electrode of the scan electrodes is different from the electric potential of the common electrode just after the scan signal drive circuit has scanned all the scan electrodes and the image signal has been transmitted to the pixel electrode, and before the electric potential of the common electrode is changed into the pulse shape.
  - 208. The liquid crystal display device according to claim 202, wherein the electric potential of the common electrode just before the scan signal drive circuit starts scanning the first scan electrode of the scan electrodes is almost equal to one of a maximum electric potential and a minimum electric potential applied as an image signal to be applied after that, and the electric potential of the common electrode just after the scan signal drive circuit has scanned all the scan electrodes and the image signal has been transmitted to the pixel electrode and before being changed into the pulse shape is almost equal to the other of the maximum electric potential and the minimum electric potential having applied as the image signal.
  - 214. A method for driving the liquid crystal display device according to claim 6, wherein the electric potential of the common electrode is composed of four electric potentials, a first electric potential being the electric potential of the common electrode while the scan signal drive circuit scans the scan electrodes to transmit the reversed image signal with one polarity, a second electric potential being an electric potential of a pulse height section while the electric potential of the common electrode is changed into the pulse shape following the first electric potential, a third electric potential being an electric potential after the completion of the pulse when the electric potential of the common electrode has been changed into the pulse shape following the second electric potential, and being the electric potential of the common electrode while the scan signal drive circuit scans the scan electrodes to transmit the reversed image signal with the other polarity, and a fourth electric potential being an electric potential of a pulse height section while the electric potential of the common electrode is changed into the pulse shape following the third electric potential.
  - 220. A method for driving the liquid crystal display device according to claim 6, wherein the electric potential of the common electrode is composed of six potentials, a first electric potential being the electric potential of the common electrode while the scan signal drive circuit scans the scan electrodes to transmit a reversed image signal with one polarity, a second electric potential being an electric potential of a pulse height section while the electric potential of the common electrode is changed into the pulse shape following the first electric potential, a third electric potential being an electric potential after the completion of the pulse when the electric potential of the common electrode has been changed into the pulse shape following the second electric potential, a fourth electric potential being the electric potential of the common electrode while the scan signal drive circuit scans the scan electrodes to transmit the reversed image signal with the other polarity, a fifth electric potential being an electric potential of a pulse height section while the electric potential of the common electrode is changed into the pulse shape following the fourth electric potential, and a sixth electric potential being an electric potential after the completion of the pulse when the electric potential of the common electrode has been changed into the pulse shape following the fifth electric potential.
  - 226. The liquid crystal display device according to claim 6, having a light emitting section for emitting light to be incident on the display section, and a synchronous circuit for synchronously modulating a light intensity of the light emitting section with a predetermined phase with respect to the image signal.
  - 232. The liquid crystal display device according to claim 6, having a light emitting section for emitting light to be incident on the display section, and a synchronous circuit for synchronously changing the color of light of the light emitting section with a predetermined phase with respect to the image signal.
  - 238. The liquid crystal display device according to claim 6, having a light emitting section for emitting light to be incident on the display section, and a synchronous circuit for synchronously modulating a light intensity of light of the light emitting section with a predetermined phase with respect to the image signal, and for synchronously changing the color of light of the light emitting section with a predetermined phase with respect to the image signal.
  - 244. A method for driving the liquid crystal display device according to claim 6, wherein a timing of modulating the light intensity of the light emitting section or changing the color of light of the light emitting section is positioned at the end of each field or each subfield corresponding to the color when the field is divided into the subfields in accordance with a plurality of colors, and just before writing an image signal of the next field.
  - 250. The liquid crystal display device according to claim 6, wherein the electric potential of the image signal is determined by performing comparison among hold data of each pixel before writing the image signal, a variation in an electric potential of the pixel electrode, and display data to be newly displayed, the variation in the electric potential of the pixel electrode being in accordance with a variation in the electric potential of the common electrode changed into the pulse shape, a variation in the electric potential of the storage capacitor electrode changed into the pulse shape, or a variation in both the electric potentials of the common electrode and the storage capacitor electrode.
  - 256. The liquid crystal display device according to claim 250, wherein the comparison between the data and the variation in the electric potential is successively performed.
  - 262. The liquid crystal display device according to claim 250, wherein the comparison between the data and the variation in the electric potential is performed by use of a LUT (lookup table, correspondence table) prepared in advance.
  - 268. The liquid crystal display device according to claim 6, using twisted nematic liquid crystal, wherein a pulse-shaped change without reset restricts an average tilt angle of the liquid crystal to 81 degrees or less, while the pulse-shaped change is applied.
  - 274. The liquid crystal display device according to claim 268, wherein the pulse-shaped change without reset restricts the average tilt angle of the liquid crystal to 65 degrees or less, while the pulse-shaped change is applied.
  - 280. The liquid crystal display device according to claim 6, wherein:
    - an image signal is used as a digital signal;
      
      an electric potential applied to a display material is a binary signal; and
      
      display is carried out by optical integrated digital drive that expresses gray level in a time-base direction.
  - 286. A near-eye device using the liquid crystal display device according to claim 6.
  - 292. A projection device for projecting an original image of a display device by a projection optical system, using the liquid crystal display device according to claim 6.
  - 298. A mobile terminal using the liquid crystal display device according to claim 6.
  - 304. A monitor device using the liquid crystal display device according to claim 6.
  - 310. A display device for a vehicle using the liquid crystal display device according to claim 6.

Specification

Resources

Litigation Campaign Assessment

Current Assignee
NEC LCD Technologies Limited (Tianma Microelectronics Company Limited)
Original Assignee
NEC Corporation
Inventors
Takatori, Kenichi

Application Number

US11/019,322
Publication Number

US 20050140634A1
Time in Patent Office

Days
Field of Search
US Class Current

345/96
CPC Class Codes

G09G 2310/0235   Field-sequential colour dis...

G09G 2320/0252   Improving the response speed

G09G 2320/041   Temperature compensation

G09G 2340/16   Determination of a pixel da...

G09G 3/3655   Details of drivers for coun...

Liquid crystal display device, and method and circuit for driving liquid crystal display device

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Liquid crystal display device, and method and circuit for driving liquid crystal display device

First Claim

2 Assignments

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0 Petitions

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Accused Products

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Abstract

Citations

310 Claims

Specification

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