Method for improving color cast of LCD, and LCD

Abstract

The invention provides a method for improving the color cast of an LCD, and the LCD. The method comprises the steps: adjusting the white balance of a white color through a white balance processing module, enabling the gray scales of the red, green and blue colors corresponding to the 255 gray scale of the actual white color to be less than 255, enabling the gray scales of the red, green and blue colors corresponding to the zero gray scale of the actual white color to be greater than zero, reserving the margins of the gray scales of the red, green and blue colors and the margin of the gray scale of the actual white color, generating a color cast compensation data look-up table according to the actual display conditions of the LCD through employing a color cast compensation module and combining with the margins, reserved by the white balance processing module, of the gray scales of the red, green and blue colors and the gray scale of the actual white color, enabling the color cast compensation module to look up the actual output gray scale of each subpixel in a current image frame in the color cast compensation data look-up table. The method can achieve the compensation for the changes between any gray scales, and can effectively improve the color cast of the LCD.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a method for improving the color shift of an LCD display and the LCD display. Background technique [0002] Liquid Crystal Display (LCD) has many advantages such as thin body, power saving, and no radiation, and has been widely used, such as: LCD TV, smart phone, digital camera, tablet computer, computer screen, or notebook computer screen etc., occupying a dominant position in the field of flat panel display. [0003] see figure 1 , the existing LCD display usually has an effective display area AA comprising a plurality of sub-pixels arranged in an array, and a gate driver (Gate Driver IC) 100 and a source electrode arranged on the periphery of the effective display area AA. The driver (Source Driver IC) 200, wherein the data signal (Data) output by the source driver 200 is sent to the sub-pixels in the corresponding column via each wiring in the fan-out wiring area (Fan out)...

AI Technical Summary

Problems solved by technology

For example, if figure 2 The output gray scale of a sub-pixel in the look-up table shown in the previous frame image is 0, and the target gray scale of the sub-pixel in the current frame image is 32, then it is found in the look-up table that the sub-pixel is in the current frame. The actual output grayscale in the frame image is 37, which means that if the sub-pixel wants to display the effect of 32 grayscale in the current frame image, it needs to actually output the data signal voltage of 37 grayscale; but if figure 2 The output grayscale of a subpixel in the shown lookup table in the previous frame image is 32, and when the target grayscale of the subpixel in the current frame image is 255, it is found in the lookup table that the subpixel is in the current frame. The actual output grayscale in the frame image is still 255, so the final grayscale of the sub-pixel is much smaller than 255 due to the difference and insufficient charging, resulting in obvious color deviation

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