3T pixel optimum common voltage adjusting method

Abstract

The invention provides a 3T pixel optimum common voltage adjusting method. The 3T pixel optimum common voltage adjusting method comprises the steps that S10, a main region is adjusted, the feed-through voltage of the main region is made to be as low as possible, and the common voltage of the main region is made to be located at a high level; S20, a secondary region is adjusted, the feed-through voltage of the secondary region is made to be as low as possible, and the common voltage of the secondary region is located at a high level; S30, common electrode potential is adjusted, and the optimum common voltage of the secondary region is increased; S40, the feed-through voltage of the main region is increased gradually, the common voltage of the main region is reduced, and finally the common voltage of the main region and the common voltage of the secondary region are consistent. According to the 3T pixel optimum common voltage adjusting method, the optimum common voltage balance of the main region and the secondary region can be easily adjusted, the common voltage of a whole panel is consistent, and the crosstalk phenomenon is relieved.

Description

technical field [0001] The invention relates to the field of liquid crystal displays, in particular to a method for adjusting the optimal common voltage of 3T pixels. Background technique [0002] A liquid crystal display panel is usually composed of a color filter substrate, a thin film transistor array substrate, and a liquid crystal layer arranged between the two substrates, and pixel electrodes and common electrodes are respectively arranged on the opposite inner sides of the two substrates, and the liquid crystal molecules are controlled to change direction by applying a voltage , to refract the light from the backlight module to generate a picture. Liquid crystal displays include twisted nematic (TN) mode, electronically controlled birefringence (ECB) mode, vertical alignment (VA) and other display modes. Among them, VA mode is a kind of display mode with high contrast, wide viewing angle, and no friction alignment. common display modes for . However, since the verti...

AI Technical Summary

Problems solved by technology

Under the influence of the DC residual effect, if the voltage of the upper and lower plates of the liquid crystal remains unchanged for a long time, the mobile ions remaining in the liquid crystal molecules will easily gather on the same side of the molecules in the electric field in the same direction to form an internal electric field. When the picture is switched from high gray scale to low gray scale, the internal electric field and the electric field of the upper and lower plates of the liquid crystal cancel each other, so that the liquid crystal cannot achieve the expected deflection angle, and finally image retention occurs

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