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Liquid crystal display signal inversion driving method

A liquid crystal display, signal inversion technology, applied in static indicators, instruments, etc., can solve the problems of liquid crystal molecular aging, and achieve the effect of increasing the refresh frequency and shortening the charging time.

Inactive Publication Date: 2010-03-24
BEIJING BOE OPTOELECTRONCIS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the liquid crystal molecules deflect in the same direction for a long time, it is easy to cause the aging of the liquid crystal molecules

Method used

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  • Liquid crystal display signal inversion driving method
  • Liquid crystal display signal inversion driving method
  • Liquid crystal display signal inversion driving method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Taking the signal frame inversion driving method of the liquid crystal display as an example, the signal inversion driving method of the liquid crystal display of the present invention will be described in detail below.

[0028] Such as Figure 4 As shown, the signal frame inversion driving method of the liquid crystal display in this embodiment includes:

[0029] S110, sequentially turn on the TFTs on the gate scanning lines of each row by using the first clock signal.

[0030] The first clock signal such as Figure 5 As shown, it includes a gate turn-on signal STV1 , a gate synchronization signal CPV1 , a data loading signal TP1 and a polarity inversion signal MPOL1 . When the gate turn-on signal STV1 outputs a high-level pulse to start a new frame, the gate synchronization signal CPV1 correspondingly starts to output a pulse to start each row of gate scanning lines. When the gate synchronization signal CPV1 outputs a high-level pulse, the gate scan signal input to...

Embodiment 2

[0041] The signal row inversion driving method of the liquid crystal display is taken as an example below to describe the signal inversion driving method of the liquid crystal display in the present invention in detail.

[0042] Such as Figure 6 As shown, the signal line inversion driving method of the liquid crystal display in the embodiment of the present invention includes:

[0043] S101. Turn on the TFTs on the gate scan line in the first row by using a second clock signal.

[0044] The second clock signal such as Figure 7 As shown, it includes a gate turn-on signal STV2 , a gate synchronization signal CPV2 , a data load signal TP2 and a polarity inversion signal MPOL2 . When the gate turn-on signal STV2 outputs a high-level pulse to start a new frame, the gate synchronization signal CPV2 correspondingly starts to output a pulse to start each row of gate scanning lines. When the gate synchronization signal CPV2 outputs a high-level pulse, the gate scan signal input to...

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Abstract

The invention discloses a liquid crystal display signal inversion driving method, relating to the manufacturing field of liquid crystal displays, and the method is designed for improving refresh frequency of the liquid crystal displays. The method of the invention comprises the following steps: utilizing a positive polar signal voltage to charge a pixel electrode; and then utilizing a negative polar signal voltage to charge a pixel electrode after the positive polar signal voltage finishes charging the pixel electrode, wherein, the charging time of the negative polar signal voltage to the pixel electrode is less than that of the positive polar signal voltage to the pixel electrode. The invention is applicable to the manufacturing of liquid crystal displays.

Description

technical field [0001] The invention relates to the field of liquid crystal display manufacture, in particular to the signal inversion driving of the liquid crystal display. Background technique [0002] The display principle of liquid crystal display is to change the grayscale of the picture displayed on the screen through the deflection of liquid crystal molecules. If the liquid crystal molecules deflect in the same direction for a long time, it is easy to cause the aging of the liquid crystal molecules. Therefore, an inversion technique is usually used to change the deflection direction of the liquid crystal molecules. [0003] figure 1 Shown is a circuit for driving a single pixel unit of a liquid crystal display, wherein 110 is a pixel electrode. The voltage of the gate G of TFT (Thin Film Transistor) is generally -5V to 20V, and the general video voltage range on the source S is 0-10V, which is used to provide grayscale information displayed in the pixel area on the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/36
Inventor 马占洁
Owner BEIJING BOE OPTOELECTRONCIS TECH CO LTD