LCD panel, LCD including same, and driving method thereof

• US 20020097214A1
• Filed: 11/29/2001
• Published: 07/25/2002
• Est. Priority Date: 12/07/2000
• Status: Active Grant

• Current Assignee: Samsung Display Company Limited (Samsung Group)
• Original Assignee: Samsung Electronics Co. Ltd. (Samsung Group)
• Inventors: Song, Jang-Kun
• Granted Patent: US 7,355,576 B2
• Time in Patent Office: Days
• US Class Current: 345/96
• CPC Class Codes: G09G 2320/0223 Compensation for problems related to R-C delay and attenuation in electrodes of matrix panels, e.g. in gate electrodes or on-substrate video signal electrodes
• CPC Class Codes: G09G 2320/0252 Improving the response speed
• CPC Class Codes: G09G 3/3614 Control of polarity reversal in general
• CPC Class Codes: G09G 3/3648 using an active matrix G09G3/367 - G09G3/3696 take precedence
• CPC Class Codes: G09G 3/3655 Details of drivers for counter electrodes, e.g. common electrodes for pixel capacitors or supplementary storage capacitors
• CPC Class Codes: G09G 3/3659 the addressing of the pixel involving the control of two or more scan electrodes or two or more data electrodes, e.g. pixel voltage dependant on signal of two data electrodes

Abstract

Disclosed is an LCD panel, an LCD including the LCD panel, and a driving method for high-speed responses. The present invention comprises a plurality of gate lines; a plurality of data lines; a common electrode line formed in the horizontal direction with vertical branches, and formed at a predetermined area between a gate line and its adjacent gate line; a first pixel electrode formed at an odd row of an odd column and even row of an even column among an area formed by a the data line and a gate line; and a second pixel electrode formed at an odd row of an even column and an even row of an odd column of the area, and having a polarity different from the first pixel electrode. The first pixel electrode is formed at an area respectively divided by an odd data line and its subsequent adjacent even data line and by connecting an odd gate line and its subsequent adjacent common electrode line, and formed at an area respectively divided by an even data line and its subsequent adjacent odd data line and by connecting an even common electrode line and its subsequent adjacent gate line; and the second pixel electrode is formed at an area respectively surrounded by an even data line and its subsequent adjacent odd data line and connected to an odd common electrode line and its subsequent adjacent gate line, formed at an area respectively divided by an odd data line and its subsequent adjacent even data line and connected to an even gate line and its subsequent adjacent common electrode line.

Claims

1. A liquid crystal display (LCD) panel, comprising:

a plurality of gate lines formed in the horizontal direction;

a plurality of data lines formed in the vertical direction;

a common electrode line formed in the horizontal direction between the gate lines;

a first pixel electrode formed at an odd row of an odd column and at an even row of an even column among areas formed by the data lines and the gate lines ; and

a second pixel electrode formed at an odd row of an even column and at an even row of an odd column of the areas, and wherein a polarity of the second electrode is different from the first pixel electrode.

2. The LCD panel of claim 1, wherein the first pixel electrode is formed at an area respectively surrounded by an odd data line and its subsequent adjacent even data line and is connected to an odd gate line and its subsequent adjacent common electrode line, and formed at an area respectively surrounded by an even data line and its subsequent adjacent odd data line and is connected to an even common electrode line and its subsequent adjacent gate line, and

wherein the second pixel electrode is formed at an area respectively surrounded by an even data line and its subsequent adjacent odd data line and is connected to an odd common electrode line and its subsequent adjacent gate line, formed at an area respectively surrounded by an odd data line and its subsequent adjacent even data line and is connected to an even gate line and its subsequent adjacent common electrode line.

3. The LCD panel of claim 1, wherein a polarity of each pixel is inverted to a different polarity per each frame.

4. A liquid crystal display (LCD), comprising:

a timing controller for outputting a first driving signal and a second driving signal, and outputting a third driving signal that defines periods and amplitudes according to vertical and horizontal synchronization signals and a main clock signal;

a data driver for outputting an image signal that drives a polarity of a liquid crystal capacitor based on the first driving signal;

a gate driver for outputting a scanning signal based on the second driving signal;

a driving voltage generator for receiving the third driving signal, raising or lowering levels of the third driving signal, and outputting a common electrode voltage that is swung and synchronized with the image signal in a predetermined period; and

an LCD panel for displaying the image signal in cooperation with the common electrode voltage and the scanning signal in an independent wiring structure that forms gate lines in the horizontal direction and common electrode lines between the gate lines.

5. The LCD of claim 4, wherein the LCD panel comprises:

a plurality of gate lines formed in the horizontal direction;

a plurality of data lines formed in the vertical direction;

common electrode lines formed in the horizontal direction between the gate lines;

a first pixel electrode formed at an odd row of an odd column and at an even row of an even column in an area formed by the data lines and the gate lines ; and

a second pixel electrode formed at an odd row of an even column and at an even row of an odd column in the area, and wherein a polarity of the second electrode is different from that of the first pixel electrode.

6. The LCD of claim 5, wherein the first pixel electrode is formed at an area respectively surrounded by an odd data line and its subsequent adjacent even data line and is connected to an odd gate line and its subsequent adjacent common electrode line, and formed at an area respectively surrounded by an ven data line and its subsequent adjacent odd data line and is connected to an even common electrode line and its subsequent adjacent gate line, and

wherein the second pixel electrode is formed at an area respectively surrounded by an even data line and its subsequent adjacent odd data line and is connected to an odd common electrode line and its subsequent adjacent gate line, formed at an area respectively surrounded by an odd data line and its subsequent adjacent even data line and is connected to an even gate line and its subsequent adjacent common electrode line.

7. The LCD of claim 4, wherein the gate driver concurrently provides a first scanning signal to an odd pixel of an odd gate line and an even pixel of an even gate line, and a second scanning signal to an odd pixel of an even gate line and an even pixel of an odd gate line.

8. The LCD of claim 4, wherein a polarity of each pixel is inverted to a different polarity per each frame.

9. The LCD of claim 4, wherein the swung common electrode voltage is a square wave having a period identical to the image signal.

10. The LCD of claim 4, wherein the swung common electrode voltage is a square wave having a period three times longer than the period of the image signal.

11. The LCD of claim 4, wherein the data driver is a low voltage TAP IC for line inversion driving.

12. The LCD of claim 4, wherein a swing amplitude of the common electrode voltage is established as:

14. The method of claim 13, wherein the common electrode voltage is synchronized with the image signal with a predetermined period and is swung.

15. The method of claim 13, wherein a swing amplitude of the common electrode voltage is established as:

16. The method of claim 13, wherein a polarity of each pixel is inverted to a different polarity per each frame.

13. In a liquid crystal display (LCD) including an LCD panel comprising a plurality of gate lines;

a plurality of data lines;

common electrode lines formed by a predetermined area made between a gate line and its subsequent adjacent gate line;

a first pixel electrode formed at an odd row of an odd column and an even row of an even column in an area formed by the data lines and the gate lines; and

a second pixel electrode formed at an odd row of an even column and an even row of an odd column, a method for driving the LCD, comprising steps of;

receiving an image signal from an external image signal source and providing the image signal to a data line;

generating a first scanning signal and providing the same to an odd pixel of an odd gate line and an even pixel of an even gate line;

generating a second scanning signal and providing the same to an odd pixel of an even gate line and an even pixel of an odd gate line;

sequentially providing the first scanning signal and the second scanning signal to the gate line; and

supplying a common electrode voltage to a common electrode line so as to superimpose voltage to transmission (VT) curves of positive and negative polarity driving together with the sequential providing of the first scanning signal and the second scanning signal.