Common electrode driving circuit and LCD

A liquid crystal display and driving circuit technology, applied in static indicators, instruments, nonlinear optics, etc., can solve the problems of lowering and difficult to improve the picture at the same time, and achieve the effect of avoiding flickering phenomenon and improving the overall display effect.

Active Publication Date: 2010-09-29
BEIJING BOE OPTOELECTRONCIS TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] However, during the research of the present invention, the inventors found that although the MLG method reduces the jump voltage ΔV to a certain extent and the flickering phenomenon of the screen is improved, it is still difficult to improve the entire screen at the same time.

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  • Common electrode driving circuit and LCD
  • Common electrode driving circuit and LCD
  • Common electrode driving circuit and LCD

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Embodiment Construction

[0039] Aiming at the problem that the MLG method still cannot improve the entire display screen at the same time, the inventors have found through research that on the entire display screen of the liquid crystal display, the jump-down voltage ΔV is different everywhere, and the above-mentioned MLG method is still the same for the entire public display screen. The same common voltage is applied to the electrodes, and the absolute difference between the common voltage and the pixel electrode voltage of all pixels cannot be guaranteed to be close to the same, and the gray scales of the forward and reverse displays of all pixels cannot be correspondingly consistent. Therefore, the LCD display will still flicker. The following is a detailed analysis:

[0040] The jump-down voltage ΔV of each pixel on the display screen of the liquid crystal display is different, which is mainly affected by two factors, which are the resistance-capacitance characteristics of the gate line and the re...

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Abstract

The invention discloses a common electrode driving circuit which comprises a plurality of output ends. The output ends are connected to a plurality of common voltage input ends of a common electrode layer and input common voltages into the common voltage input ends, and the input common voltages are gradually smaller from data signal input start ends to data signal input final ends. The invention also provides an LCD (Liquid Crystal Display) comprising the common electrode driving circuit. In the invention, different common voltages are input to different parts of a substrate so that the voltage adjustment amounts of the common electrodes are consistent with a jump-down voltage of each pixel on a display picture as much as possible, and the glitter problem of the whole picture is better solved.

Description

technical field [0001] The invention relates to a driving technology of a liquid crystal display, in particular to a common electrode driving circuit and a liquid crystal display. Background technique [0002] Currently, liquid crystal displays, especially thin film transistor liquid crystal displays (Thin Film Transistor-Liquid Crystal Displays; hereinafter referred to as: TFT-LCDs), have been more and more widely used due to their advantages of thinness and portability. Screen flicker often occurs during use, which affects the display quality of the liquid crystal display. The following is a brief introduction to the principle of LCD flicker phenomenon. [0003] A liquid crystal display is composed of multiple pixels arranged in a matrix. figure 1 It is the equivalent circuit schematic diagram of the unit pixel in the prior art liquid crystal display, such as figure 1 As shown, when the TFT-LCD is working, on the array substrate, the gate-on voltage is first applied to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/36G02F1/1362
CPCG09G2320/0247G09G2310/0281G09G3/3677G09G2320/0219G09G2310/066G09G3/3655G09G2320/0223G09G2300/0426G02F1/1343G09G3/36
Inventor 肖向春
Owner BEIJING BOE OPTOELECTRONCIS TECH CO LTD
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