Voltage regulation method and device of liquid crystal display panel

Abstract

The invention discloses a voltage regulation method and a voltage regulation device of a liquid crystal display panel. The method comprises the steps of acquiring the initial reference voltage value of a gamma voltage pair at each gray level according to a voltage-transmittance curve and a gamma standard voltage curve of the liquid crystal display panel, wherein the gamma voltage pair comprises first gamma voltage and second gamma voltage; fixing the first gamma voltage at each gray level, respectively regulating the second gamma voltage at each gray level according to the flicker value of the brightness of the liquid crystal display panel and the initial reference voltage value of the second gamma voltage at each gray level, and acquiring the regulated voltage value of the second gamma voltage; and respectively conducting equal-proportion synchronous regulation to the initial reference voltage value of the first gamma voltage at each gray level and the regulated voltage value of the second gamma voltage, so as to adjust the brightness corresponding to a gray level to be the same as the brightness corresponding to the same gray level in the gamma standard voltage curve. By adopting the voltage regulation method and the voltage regulation device of the liquid crystal display panel, the afterimage phenomenon of the liquid crystal display panel is improved.

Description

technical field [0001] The invention relates to liquid crystal display technology, in particular to a voltage regulation method and device for a liquid crystal display panel. Background technique [0002] At present, Thin Film Transistor Liquid Crystal Display (TFT-LCD for short) products have been widely used in people's production and life, including televisions, monitors, and portable electronic display products. Among them, the afterimage of the display panel becomes one of the main factors affecting the display image quality of the product. Image retention is a phenomenon that occurs inside the liquid crystal cell. Due to the long-term display of a static image, when changing to other images, the liquid crystal molecules cannot be deflected in time and completely to adapt to the new image, so the pattern of the original image still remains, making the display effect is affected. Image sticking can be divided into area image sticking and line image sticking according t...

AI Technical Summary

Problems solved by technology

[0004] However, the voltage adjustment method in the prior art only considers the matching of the transmittance of each gray scale with the gamma standard curve, so the voltage set by this method may be asymmetrical with respect to the voltage of the common electrode, resulting in a direct current The biased electric field causes the ions in the liquid crystal cell to gather, which affects the deflection of the liquid crystal in the liquid crystal cell, resulting in afterimages on the display panel

In this case, for the LCD panel in FFS mode, the afterimage is more serious.

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