Liquid crystal display device and driving method thereof

Abstract

The invention relates to a liquid crystal display device, which comprises a first gamma voltage generator and a second gamma voltage generator, wherein the first gamma voltage generator and the second gamma voltage generator are connected to a first source electrode driver and a second source electrode driver respectively and generate first grayscale gamma reference voltage and second grayscale gamma reference voltage according to a first gamma curve and a second gamma curve respectively; the first source electrode driver and the second source electrode driver are respectively to an odd data wire and an even data wire, and the odd data wire and the even data wire control a first grayscale area and a second grayscale area of each sub-pixel respectively; and the first source electrode driver and the second source electrode driver convert data signals inputted from the external into a first grayscale data signal and a second grayscale data signal according to the first grayscale gamma reference voltage and the second grayscale gamma reference voltage respectively, and respectively provide the first grayscale data signal and the second grayscale data signal to the odd data wire and the even data wire respectively.

Description

technical field [0001] The invention relates to a display and its driving method, in particular to a liquid crystal display capable of compensating color deviation and its driving method. Background technique [0002] As for the wide viewing angle technology of the liquid crystal display, the most popular one at present is a vertically aligned (VA) type liquid crystal display. However, when the vertical alignment liquid crystal display is viewed from an oblique angle, the display will produce a color shift phenomenon (color shift), which will cause the skin color of people, especially the skin color of Asians, to appear bluish or whitish. This is because when the voltage increases, the transmittance in the positive viewing angle gamma characteristic curve (transmittance and gray level voltage relationship curve) of the vertical alignment liquid crystal display will also increase accordingly, showing a monotone function, while the off-angle viewing angle The transmittance in...

AI Technical Summary

Problems solved by technology

[0006] Therefore, the object of the present invention is to provide a liquid crystal display device and its driving method, utilizing a set of gamma voltage generators (gamma voltage generators) and source drivers to control odd data lines exclusively, and another set of gamma voltage generators The even-numbered data lines are specially controlled by the source driver to solve the problems that the above-mentioned known technologies cannot overcome, and to avoid color difference and uneven brightness and darkness of the screen

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