Voltage regulation method and device of liquid crystal display panel

Abstract

A voltage adjustment method and apparatus of a liquid crystal display (LCD) panel. The method comprises: acquiring initial reference voltage (RV) values of gamma voltage pairs corresponding to respective gray scales, which includes a first and a second gamma voltage; fixing the first gamma voltages, adjusting respectively the second gamma voltages in accordance with flicker values of the brightness of the LCD panel and the initial RV values of the second gamma voltages, and acquiring the adjusted voltage values of the second gamma voltages; and adjusting synchronously, with an equal proportion, the initial RV value of the first gamma voltage and the adjusted voltage value of the second gamma voltage corresponding to each gray scale respectively, so that the brightness corresponding to the gray scale is adjusted to be the same as the brightness corresponding to the same gray scale in the gamma standard voltage curve.

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) 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 to the shap...

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.

Images