APPARATUS AND METHOD OF BRIGHTNESS COMPENSATION FOR LIQUID CRYSTAL DISPLAY DEVICE

摘要

An apparatus and a method of brightness compensation for a liquid crystal display device are provided to prevent the contrast ratio from being lowered by preventing the light leakage phenomenon. An apparatus for compensating for the brightness of the liquid crystal display outputs the gate control signal(GDC) and the data control signal(DDC) for controlling the drive of data driving unit(43) and a gate driving unit(42). A timing controller(41) replaces the RGB data of the low gray level region to the value corrected to the higher value in the situation where the light leakage phenomenon is expected and outputs. The gate driving unit supplies the scan pulse to each gate line(GL1~GLn) of a liquid crystal panel(44). The data driving unit supplies the pixel signal to each data line(DL1~DLm) of the liquid crystal panel.