Polar inversion method of LCD pixel array

Abstract

The invention discloses an LCD driving method, in particular to a polar inversion method of an LCD pixel array. In the method, more than one pixels in all the LCD pixels have the same polarity, and more than one adjacent pixels have opposite polarity; and more than one pixel with the same polarity make polarity inversion at the same time, wherein, each pixel comprises three adjacent RGB pixels. The invention helps change the LCD driving method and the pixel polar inversion method in the prior art, and solves the flicker problem, thus realizing more coherent and realistic pictures, consistent RGB pixel polarity of each group of the pictures, and simpler drive mode than dot inversion. In the invention, the polarity of GAMMA voltage is inversed once every three pixel points; and compared withdot inversion, the polarity needs to be inversed at each pixel point, thus simplifying design, reducing switching frequency by 2 / 3, and reducing EMI interference as well.

Description

Technical field [0001] The invention discloses a driving method of a liquid crystal display screen, in particular a polarity reversal method of a pixel array of the liquid crystal display screen. Background technique [0002] When the LCD screen displays images, it will inevitably produce DC residual phenomenon, which will affect the use. In order to avoid the occurrence of DC residual, the average value of the applied voltage must be zero, that is, the pixel polarity must be reversed. Please refer to the attached figure 1 Attached Figure 4 , Attached figure 1 Attached Figure 4 The four pixel array polarity inversion methods in the prior art are Frame inversion (all pixels are inverted), Row inversion (all pixels are inverted by rows), Column inversion (all pixels are inverted by columns) and Dot inversion (all pixels are inverted), comparing two consecutive frames, it can be seen that the pixel storage voltage of the entire screen in Frame inversion is the same positive or ne...

AI Technical Summary

Problems solved by technology

At present, LCM above 7” on the market is designed with dot inversion. Although the display effect of dot inversion is better, the driving part of dot inversion is also the most complicated in terms of driving mode. At the same time, because dot inversion is the The polarities of the LEDs are different, and the design of the pixels at the LCM end is RGB, RGB, RGB..., so there will be two different polarities in a group of RGB, which will make the effect displayed by the RGB combination not very real. Make the displayed screen color appear certain deviation

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