Liquid crystal display module

• US 8,456,398 B2
• Filed: 04/03/2009
• Issued: 06/04/2013
• Est. Priority Date: 04/04/2008
• Status: Expired due to Fees

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Ito, Daisuke, Kida, Yoshitoshi, Takeuchi, Takeya, Pusey, David, Shadwell, Peter
• Primary Examiner(s): SHENG, TOM V
• Application Number:
  US12/418,319
• Publication Number:
  US 20090251629A1
• Time in Patent Office: 1,523 Days
• Field of Search: 345/87, 345/90, 345/204, 345/205, 345/206, 349/84, 349/139
• US Class Current: 345/90
• CPC Class Codes: G02F 1/134318 having a patterned common electrode
• CPC Class Codes: G09G 2300/0426 Layout of electrodes and connections
• CPC Class Codes: G09G 2320/0209 Crosstalk reduction, i.e. to reduce direct or indirect influences of signals directed to a certain pixel of the displayed image on other pixels of said image, inclusive of influences affecting pixels in different frames or fields or sub-images which constitute a same image, e.g. left and right images of a stereoscopic display
• CPC Class Codes: G09G 2330/021 Power management, e.g. power saving
• CPC Class Codes: G09G 3/3614 Control of polarity reversal in general
• CPC Class Codes: G09G 3/3655 Details of drivers for counter electrodes, e.g. common electrodes for pixel capacitors or supplementary storage capacitors

Abstract

A liquid crystal display module including a liquid crystal display having a plurality of liquid crystal cells, a plurality of switches and a common connection, each liquid crystal cell being connected between a respective switch and a common connection. The common connection includes strips, each extending in a first direction and the strips being arranged side-by-side in a second direction. The liquid crystal cells are arranged in rows, each row being along and connected to a strip. The liquid crystal display has gate lines, each gate line operating a respective plurality of the switches. For dot inversion, each gate operates switches connected to respective liquid crystal cells of two adjacent rows. For each row, a first set of alternate liquid crystal cells are connected to respective switches operated by a respective gate line and a second set of interspersed liquid crystal cells are connected to respective switches operated by another respective gate line.

Claims

1. A liquid crystal display module including:

a liquid crystal display having a plurality of liquid crystal cells, a plurality of switches and a common connection for the liquid crystal cells, each liquid crystal cell being connected between a respective one of the plurality of switches and the common connection;

wherein the common connection includes a plurality of strips, each strip extending in a first direction and the plurality of strips being arranged side by side in a second direction;

wherein the plurality of liquid crystal cells are arranged in rows, each row being arranged along and connected to a respective strip;

wherein the liquid crystal display further has a plurality of gate lines, each gate line operating a respective plurality of said switches;

wherein each gate line is configured to operate switches connected to respective liquid crystal cells of two adjacent rows;

wherein, for each row, a first set of alternate liquid crystal cells are connected to respective switches operated by a respective one of said gate lines and a second set of interspersed alternate liquid crystal cells are connected to respective switches operated by a respective different one of said gate lines; and

wherein the liquid crystal module further includes a driver circuit for driving the liquid crystal display, the driver circuit being configured to control, in turn, each gate line to operate said switches connected to the liquid crystal cells of the respective two adjacent rows and simultaneously to drive to one of two predetermined potential two strips corresponding to two adjacent rows.

2. A liquid crystal module according to claim 1 wherein the driver circuit

is configured simultaneously to drive only the two strips to said one of two predetermined potentials at any one time.

3. A liquid crystal module according to claim 1 wherein the other strips are not driven to said one of two predetermined potentials.

4. A liquid crystal module according to claim 3 wherein the other strips are driven to a different predetermined potential.

5. A liquid crystal module according to claim 4 wherein the other strips are driven to a potential substantially midway between said two predetermined potentials.

6. A mobile telephone including a liquid crystal display module including:

a liquid crystal display having a plurality of liquid crystal cells, a plurality of switches and a common connection for the liquid crystal cells, each liquid crystal cell being connected between a respective one of the plurality of switches and the common connection;

wherein the common connection includes a plurality of strips, each strip extending in a first direction and the plurality of strips being arranged side by side in a second direction;

wherein the plurality of liquid crystal cells are arranged in rows, each row being arranged along and connected to a respective strip;

wherein the liquid crystal display further has a plurality of gate lines, each gate line operating a respective plurality of said switches;

wherein each gate line is configured to operate switches connected to respective liquid crystal cells of two adjacent rows;

wherein, for each row, a first set of alternate liquid crystal cells are connected to respective switches operated by a respective one of said gate lines and a second set of interspersed alternate liquid crystal cells are connected to respective switches operated by a respective different one of said gate lines; and

wherein the liquid crystal module further includes a driver circuit for driving the liquid crystal display, the driver circuit being configured to control, in turn, each gate line to operate said switches connected to the liquid crystal cells of the respective two adjacent rows and simultaneously to drive to one of two predetermined potential two strips corresponding to two adjacent rows.

7. A camera including a liquid crystal display module including:

a liquid crystal display having plurality of liquid crystal cells, a plurality of switches and a common connection for the liquid crystal cells, each liquid crystal cell being connected between a respective one of the plurality of switches and the common connection;

wherein the common connection includes a plurality of strips, each strip extending in a first direction and the plurality of strips being arranged side by side in a second direction;

wherein the plurality of liquid crystal cells are arranged in rows, each row being arranged along and connected to a respective strip;

wherein the liquid crystal display further has a plurality of gate lines, each gate line operating a respective plurality of said switches;

wherein each gate line is configured to operate switches connected to respective liquid crystal cells of two adjacent rows;

wherein, for each row, a first set of alternate liquid crystal cells are connected to respective switches operated by a respective one of said gate lines and a second set of interspersed alternate liquid crystal cells are connected to respective switches operated by a respective different one of said gate lines; and

wherein the liquid crystal module further includes a driver circuit for driving the liquid crystal display, the driver circuit being configured to control, in turn, each gate line to operate said switches connected to the liquid crystal cells of the respective two adjacent rows and simultaneously to drive to one of two predetermined potential two strips corresponding to two adjacent rows.

8. A method of driving a liquid crystal display having a plurality of liquid crystal cells, a plurality of switches and a common connection for the liquid crystal cells, each liquid crystal cell being connected between a respective one of the plurality of switches and the common connection, the method including:

providing the common connection as a plurality of strips, each strip extending in a first direction and the plurality of strips being arranged side by side in a second direction wherein the plurality of liquid crystal cells are arranged in rows, each row being arranged along and connected to a respective strip;

providing a plurality of gate lines, each gate line operating a respective plurality of said switches wherein each gate line is configured to operate switches connected to respective liquid crystal cells of two adjacent rows;

for each row, connecting a first set of alternate liquid crystal cells to respective switches operated by a respective one of said gate lines and connecting a second set of interspersed alternate liquid crystal cells to respective switches operated by a respective different one of said gate lines; and

driving the liquid crystal display by controlling, in turn, each gate line to operate said switches connected to the liquid crystal cells of the respective two adjacent rows and simultaneously to drive to one of two predetermined potentials two strips corresponding to two adjacent rows.

9. A liquid crystal display module including:

a liquid crystal display having a plurality of liquid crystal cells, a plurality of switches and a common connection for the liquid crystal cells, each liquid crystal cell being connected between a respective one of the plurality of switches and the common connection;

wherein the common connection includes a plurality of strips, each strip extending in a first direction and the plurality of strips being arranged side by side in a second direction;

wherein the plurality of liquid crystal cells are arranged in rows, the rows being arranged as adjacent pairs of rows, each pair of rows being arranged along and connected to a respective strip;

wherein the liquid crystal display further has a plurality of gate lines, each gate line operating a respective plurality of said switches;

wherein each gate line is configured to operate switches connected to respective liquid crystal cells of two adjacent rows;

wherein, for each row, a first set of alternate liquid crystal cells are connected to respective switches operated by a respective one of said gate lines and a second set of interspersed alternate liquid crystal cells are connected to respective switches operated by a respective different one of said gate lines; and

wherein the liquid crystal module further includes a driver circuit for driving the liquid crystal display, the driver circuit being configured to control, in turn, each gate line to operate said switches connected to the liquid crystal cells of the respective two adjacent rows and simultaneously to drive to one of two predetermined potential at least one of the strips corresponding to at least one of the respective two adjacent rows.

10. A liquid crystal module according to claim 9 wherein the driver circuit is configured to drive only said respective strip to said one of two predetermined potential at any one time.

11. A liquid crystal module according to claim 9 wherein the other strips are not driven to said one of two predetermined potentials.

12. A liquid crystal module according to claim 11 wherein the other strips are driven to a different predetermined potential.

13. A liquid crystal module according to claim 12 wherein the other strips are driven to a potential substantially midway between said two predetermined potentials.

14. A mobile telephone including a liquid crystal display module including:

a liquid crystal display having a plurality of liquid crystal cells, a plurality of switches and a common connection for the liquid crystal cells, each liquid crystal cell being connected between a respective one of the plurality of switches and the common connection;

wherein the common connection includes a plurality of strips, each strip extending in a first direction and the plurality of strips being arranged side by side in a second direction;

wherein the plurality of liquid crystal cells are arranged in rows, the rows being arranged as adjacent pairs of rows, each pair of rows being arranged along and connected to a respective strip;

wherein the liquid crystal display further has a plurality of gate lines, each gate line operating a respective plurality of said switches;

wherein each gate line is configured to operate switches connected to respective liquid crystal cells of two adjacent rows;

wherein, for each row, a first set of alternate liquid crystal cells are connected to respective switches operated by a respective one of said gate lines and a second set of interspersed alternate liquid crystal cells are connected to respective switches operated by a respective different one of said gate lines; and

wherein the liquid crystal module further includes a driver circuit for driving the liquid crystal display, the driver circuit being configured to control, in turn, each gate line to operate said switches connected to the liquid crystal cells of the respective two adjacent rows and simultaneously to drive to one of two predetermined potential at least one of the strips corresponding to at least one of the respective two adjacent rows.

15. A camera including a liquid crystal display module including:

a liquid crystal display having plurality of liquid crystal cells, a plurality of switches and a common connection for the liquid crystal cells, each liquid crystal cell being connected between a respective one of the plurality of switches and the common connection;

wherein the common connection includes a plurality of strips, each strip extending in a first direction and the plurality of strips being arranged side by side in a second direction;

wherein the plurality of liquid crystal cells are arranged in rows, the rows being arranged as adjacent pairs of rows, each pair of rows being arranged along and connected to a respective strip;

wherein the liquid crystal display further has a plurality of gate lines, each gate line operating a respective plurality of said switches;

wherein each gate line is configured to operate switches connected to respective liquid crystal cells of two adjacent rows;

wherein, for each row, a first set of alternate liquid crystal cells are connected to respective switches operated by a respective one of said gate lines and a second set of interspersed alternate liquid crystal cells are connected to respective switches operated by a respective different one of said gate lines; and

wherein the liquid crystal module further includes a driver circuit for driving the liquid crystal display, the driver circuit being configured to control, in turn, each gate line to operate said switches connected to the liquid crystal cells of the respective two adjacent rows and simultaneously to drive to one of two predetermined potential at least one of the strips corresponding to at least one of the respective two adjacent rows.

16. A method of driving a liquid crystal display having a plurality of liquid crystal cells, a plurality of switches and a common connection for the liquid crystal cells, each liquid crystal cell being connected between a respective one of the plurality of switches and the common connection, the method including:

providing the common connection as a plurality of strips, each strip extending in a first direction and the plurality of strips being arranged side by side in a second direction wherein the plurality of liquid crystal cells are arranged in rows, the rows being arranged as adjacent pairs of rows, each pair of rows being arranged along and connected to a respective strip;

providing a plurality of gate lines, each gate line operating a respective plurality of said switches wherein each gate line is configured to operate switches connected to respective liquid crystal cells of two adjacent rows;

for each row, connecting a first set of alternate liquid crystal cells to respective switches operated by a respective one of said gate lines and connecting a second set of interspersed alternate liquid crystal cells to respective switches operated by a respective different one of said gate lines; and

driving the liquid crystal display by controlling, in turn, each gate line to operate said switches connected to the liquid crystal cells of the respective two adjacent rows and simultaneously to drive to one of two predetermined potentials at least one of the strips corresponding to at least one of the respective two adjacent rows.