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Method for driving liquid crystal display apparatus

A technology of a liquid crystal display device and a driving method, applied in static indicators, nonlinear optics, instruments, etc., capable of solving problems such as grayscale differences and lowering display quality, and achieving the effect of improving display quality

Inactive Publication Date: 2009-04-22
上海广电光电子有限公司
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  • Summary
  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

In the time of T2, the charging action cannot be completed, causing the pixel voltage to be lower than the data voltage, indicating insufficient charging, which will cause differences in the gray scale of the display and reduce the display quality

Method used

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  • Method for driving liquid crystal display apparatus
  • Method for driving liquid crystal display apparatus
  • Method for driving liquid crystal display apparatus

Examples

Experimental program
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Embodiment Construction

[0027] The present invention will be further described below in conjunction with the accompanying drawings and typical embodiments.

[0028] The liquid crystal display device used in the present invention comprises m rows and n columns of pixels, please refer to Figure 8 , each pixel is composed of a thin film transistor (TFT), each row of pixels is connected to a scanning line, the scanning lines G1, G2...Gm provide scanning signals from the gate driver 2, and each column of pixels is connected to a data line, the data line D1, Data signals D2...Dn are provided by the data driver 3, wherein the data lines D1, D2...Dn and the scan lines G1, G2...Gm are vertically intersected, and the gate driver 2 and the data driver 3 are respectively driven by the timing controller 1.

[0029] The invention discloses a driving method of a liquid crystal display device, please refer to image 3 , each scan line appears twice in one frame to turn on the high level required for TFT. When it i...

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Abstract

The invention relates to a driving method for a liquid crystal display device. The liquid crystal display device comprises m lines and n rows of pixels. Every line of pixels is connected with a scanning beam; a grid actuator provides a scanning signal for the scanning beam; wherein, double scanning and charging are carried out on every line of pixels in a frame; a precharging voltage is charge for the first time; data voltage is charged for the second time; the precharging voltage and the data voltage have the polarity. The driving method for the liquid crystal display device provided by the invention can ensure the pixels to be charged completely by precharging the pixels and improves the display quality.

Description

technical field [0001] The invention relates to a driving method of a liquid crystal display device, in particular to a driving method of a liquid crystal display device which improves insufficient charging of pixels. Background technique [0002] Display technology has changed significantly in recent years. Traditional CRT displays are gradually being replaced by flat panel displays, the most common of which are thin film transistor liquid crystal displays (TFT-LCDs). [0003] Due to the characteristics of light weight, thin thickness and low power consumption, liquid crystal display devices have been widely used in more and more electronic products. However, with the wide application of liquid crystal display devices, the size of liquid crystal display devices is getting larger and higher, and the resolution is getting higher and higher. In order to solve the problem of motion blur in liquid crystal display devices, the scanning frequency has been doubled from the origina...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/1362G02F1/133G09G3/36
Inventor 王志军朱修剑
Owner 上海广电光电子有限公司
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