IP Library Patent Application 11511510
Patent Application
App. No. 11/511,510

Liquid crystal display and pre-charge driving method thereof

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Quick Facts
Patent No.
US None
App. No.
11/511,510
Abstract

There are provided a liquid crystal display and a pre-charge driving method thereof. The liquid crystal display includes a liquid crystal panel; a gate driver; a data driver; a pre-charge driver that sequentially transfers pre-charge signals to each of data lines by data enable signals before data signals are transferred to each of the data lines; and a timing controller. The pre-charge driving method of a liquid crystal display comprises sequentially supplying scan signals to each of a plurality of gate lines; sequentially transferring pre-charge signals to each of a plurality of data lines by data enable signals; and sequentially transferring data signals to each of the data lines by the data enable signals after the pre-charge signals are transferred to each of the data lines.

Claims (23)

1 . A liquid crystal display comprising:

a liquid crystal panel including a plurality of pixels divided by a plurality of gate lines and a plurality of data lines crossing each other; wherein an image is displayed in each pixel depending on scan signals transferred through the plurality of gate lines and data signals transferred through the plurality of data lines;

a gate driver that sequentially supplies the scan signals to each of the plurality of gate lines;

a data driver that sequentially transfers the data signals to each of the plurality of data lines by data enable signals;

a pre-charge driver that sequentially transfers pre-charge signals to each of the data lines by data enable signals before the data signals are transferred to each of the data lines; and

a timing controller that supplies a timing control signal to the gate driver and the data driver, supplies the data signals to the data driver, and supplies the pre-charge signals to the pre-charge driver.

2 . The liquid crystal display of claim 1 , wherein the pre-charge driver transfers the pre-charge signal to the data line by the pre-charge enable signal.

3 . The liquid crystal display of claim 2 , wherein the pre-charge driver comprises a plurality of switching elements each transferring the pre-charge signal to the data line.

4 . The liquid crystal display of claim 3 , wherein the plurality of switching elements is a transmission gate.

5 . The liquid crystal display of claim 1 , wherein the data enable signals comprise first to m-th data enable signals and the plurality of data lines comprise first to m-th data lines; and

the data driver transfers the data signal to a k-th data line by a k-th data enable signal (1≦k≦m) and the pre-charge driver transfers the pre-charge signal to a (j+1)th data line by a j-th data enable signal (1≦j≦m−1).

6 . The liquid crystal display of claim 5 , wherein the pre-charge driver transfers the pre-charge signal to the first data line by the first pre-charge enable signal.

7 . The liquid crystal display of claim 6 , wherein the pre-charge driver comprises the m number of switching elements for transferring the pre-charge signal to the first to m-th data lines.

8 . The liquid crystal display of claim 7 , wherein the m number of switching elements are transmission gates.

9 . The liquid crystal display of claim 1 , wherein the liquid crystal panel, the data driver, and the pre-charge driver are integrally formed.

10 . A pre-charge driving method of a liquid crystal display comprising:

sequentially supplying scan signals to each of a plurality of gate lines;

sequentially transferring pre-charge signals to each of a plurality of data lines by data enable signals; and

sequentially transferring data signals to each of the data lines by the data enable signals after the pre-charge signals are transferred to each of the data lines.

11 . The pre-charge driving method of claim 10 , wherein the data enable signals comprise first to m-th data enable signals and the plurality of data lines comprise first to m-th data lines;

the transferring of the pre-charge signals is to transfer the pre-charge signal to a (j+1)th data line by a j-th data enable signal (1<j<m−1); and

the transferring of the data signal is to transfer the data signal to a k-th data line by a k-th data enable signal (1≦k≦m).

12 . The pre-charge driving method of claim 11 , wherein the transferring of the pre-charge signal is to transfer the pre-charge signal to the first data line by the first pre-charge enable signal.

Assignments (2)
CHANGE OF NAME Recorded Oct 17, 2008
From: LG.PHILIPS LCD CO., LTD.
To: LG DISPLAY CO., LTD.
Reel/Frame 021763/0117 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 14, 2006
From: YOO, JUHN SUK; LEE, BU YEOL
To: LG.PHILIPS LCD CO., LTD.
Reel/Frame 018570/0153 →