Liquid crystal display driving system and liquid crystal display driving method

Abstract

The invention discloses a liquid crystal driving system. The liquid crystal driving system comprises a sequence controller and a memory storage device, the sequence controller is used for reading a gray-scale compensation value in the memory storage device and obtaining a correction gray-scale value according to the gray-scale compensation value and an initial gray-scale value from a host system, the sequence controller comprises a gray-scale detection circuit and a gray-scale compensation operation circuit, the gray-scale detection circuit is used for detecting whether the initial gray-scale value of the host system is smaller than or equal to a fixed value, and the sequence controller regards the initial gray-scale value as the correction gray-scale value when the initial gray-scale value is smaller than or equal to the fixed value. According to the liquid crystal display driving system, the phenomenon of non-uniform display brightness caused by low gray-scale compensation of a liquid crystal display panel can be avoided. The invention also discloses a liquid crystal driving method.

Description

technical field [0001] The invention relates to the field of liquid crystal display, in particular to a liquid crystal display driving system and a liquid crystal display driving method. Background technique [0002] Liquid crystal display panels are playing an increasingly important role in today's life, and a complex display driving system is required for the liquid crystal display panel to realize its display function. Since the manufacturing process of the liquid crystal display panel is relatively complicated, some flaws in the process may easily lead to uneven display brightness of the produced liquid crystal display panel, forming various moiré patterns (Mura), and affecting the display effect of the liquid crystal display panel. In order to improve the brightness uniformity of the liquid crystal display panel, the method of grayscale value compensation is currently used. For example, in the surrounding area of ​​the liquid crystal display panel, a high-resolution cam...

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Problems solved by technology

[0003] However, the difference in brightness in areas with low grayscale (for example, below grayscale 10) is very obvious. When the moiré phenomenon is serious, the compensation value used is relatively large. In this case, the deviation is not easy to control, resulting in a grayscale The brightness of the compensated area is brighter or darker, and the brightness is uneven, forming a clear boundary line, which makes the display effect of the LCD panel worse

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