IP Library Granted Patent US 7,477,332
Granted Patent B2
US 7,477,332 · App. 10/673,144 · Granted Jan 13, 2009

Liquid crystal display device and method for removing residual charge

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Quick Facts
Patent No.
US 7,477,332
App. No.
10/673,144
Granted
Jan 13, 2009
Kind
B2
Abstract

A liquid crystal display device for removing residual charge includes a plurality of data lines and a plurality of gate lines arranged along vertical and horizontal directions, respectively, on a transparent substrate, a source driver for supplying data voltage to the data lines, a gate driver for supplying gate voltage to the gate lines, and a plurality of common voltage lines connected to the data lines and the gate lines through a plurality of static electricity preventing units, wherein at least one of the static electricity preventing units is directly connected to the source driver.

Claims (60)

1. A liquid crystal display device for removing residual charge, comprising:

a plurality of data lines and a plurality of gate lines arranged along vertical and horizontal directions, respectively, on a transparent substrate;

a source driver for supplying data voltage to the data lines;

a gate driver for supplying gate voltage to the gate lines; and

a plurality of common voltage lines connected to the data lines and the gate lines through a plurality of static electricity preventing units;

a first dummy line connected to the gate lines and the common voltage lines through the static electricity preventing unit; and

a second dummy line connected to the data lines and the common voltage lines through the static electricity preventing units,

wherein at least one of the static electricity preventing units is directly connected to the source driver.

2. The device according to claim 1 , wherein the common voltage lines receive a common voltage from the gate driver.

3. The device according to claim 1 , wherein the gate driver is electrically connected to the source driver to receive a gate signal and a control signal.

4. The device according to claim 1 , wherein the common voltage lines include at least one silver dot.

5. The device according to claim 1 , further comprising a source printed circuit board for supplying a gate signal, a data signal, and a control signal to the source driver.

6. A liquid crystal display device for removing residual charge, comprising:

a plurality of data lines and a plurality of gate lines arranged along vertical and horizontal directions, respectively, on a transparent substrate;

a source driver for supplying data voltage to the data lines;

a source printed circuit board for supplying a gate signal, a data signal, and a control signal to the source driver;

a gate driver for supplying gate voltage to the gate lines;

a plurality of common voltage lines connected to the data lines and the gate lines through a plurality of static electricity preventing units;

a first dummy line connected to the gate lines and the common voltage lines through the static electricity preventing unit; and

a second dummy line connected to the data lines and the common voltage lines through the static electricity preventing units,

wherein at least one pathway of the residual charge flows to ground directly through the source driver and the source printed circuit board.

7. The device according to claim 6 , wherein the common voltage lines receive a common voltage from the gate driver.

8. The device according to claim 6 , wherein the gate driver is electrically connected to the source driver to receive a gate signal and a control signal.

9. The device according to claim 6 , wherein the common voltage lines include at least one silver dot.

10. A liquid crystal display device for removing residual charge, comprising:

a plurality of data lines and a plurality of gate lines arranged along vertical and horizontal directions, respectively, on a transparent substrate;

a source driver for supplying data voltage to the data lines;

a source printed circuit board for supplying a gate signal, a data signal, and a control signal to the source driver;

a gate driver for supplying gate voltage to the gate lines;

a plurality of common voltage lines connected to the data lines and the gate lines through a plurality of static electricity preventing units;

a first dummy line connected to the gate lines and the common voltage lines through the static electricity preventing unit; and

a second dummy line connected to the data lines and the common voltage lines through the static electricity preventing units,

wherein at least one pathway of the residual charge flows to ground through driver circuitry of the source driver and the source printed circuit board.

11. The device according to claim 10 , wherein the common voltage lines receive a common voltage from the gate driver.

12. The device according to claim 10 , wherein the gate driver is electrically connected to the source driver to receive a gate signal and a control signal.

13. The device according to claim 10 , wherein the common voltage lines include at least one silver dot.

14. A method for removing residual charge from a liquid crystal display device, comprising:

providing a first dummy line connected to each one of a plurality of gate lines;

providing a second dummy line connected to each of a plurality of data lines;

providing a plurality of static electricity preventing units between each of the gate lines and the first dummy line, between each of the data lines and the second dummy line, and between the first and second dummy lines;

providing a source driver for supplying data voltage to the data lines;

providing a source printed circuit board for supplying voltage signals to the source driver;

providing a gate driver for supplying gate voltage to the gate lines; and

providing a plurality of common voltage lines connected to the data lines and the gate lines through the plurality of static electricity preventing units,

wherein at least one pathway of the residual charge flows to ground from the first dummy line through the source driver and the source printed circuit board.

15. The method according to claim 14 , wherein the pathway includes drive circuitry of the source driver.

16. The method according to claim 14 , wherein the pathway excludes drive circuitry of the source driver.

17. A method for removing residual charge from a liquid crystal display device, comprising:

providing a liquid crystal panel, the liquid crystal panel including:

a plurality of data lines and a plurality of gate lines arranged along vertical and horizontal directions, respectively, on a transparent substrate;

a source driver for supplying data voltage to the data lines;

a source printed circuit board for supplying a gate signal, a data signal, and a control signal to the source driver;

a gate driver for supplying gate voltage to the gate lines;

a plurality of common voltage lines connected to the data lines and the gate lines through a plurality of static electricity preventing units;

a first dummy line connected to the gate lines and the common voltage lines through the static electricity preventing unit; and

a second dummy line connected to the data lines and the common voltage lines through the static electricity preventing units,

connecting at least one pathway to ground through the source driver and the source printed circuit board; and

discharging the residual charge through the pathway.

18. The method according to claim 17 , wherein the pathway includes drive circuitry of the source driver.

19. The method according to claim 17 , wherein the pathway excludes drive circuitry of the source driver.

Assignments (2)
CHANGE OF NAME Recorded Jun 19, 2008
From: LG.PHILIPS LCD CO., LTD.
To: LG DISPLAY CO., LTD.
Reel/Frame 021147/0009 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 30, 2003
From: PARK, SOON-YOUNG; LEE, DEOK-WON
To: LG.PHILIPS CO., LTD.
Reel/Frame 014569/0220 →