公开(公告)号：US20170140692A1

公开(公告)日：2017-05-18

申请号：US14783728

申请日：2015-08-10

Applicant: WUHAN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.

Inventor： Bin XIONG ,  Yingchi WANG ,  Gonghua ZOU

IPC: G09G3/20 ,  G09G3/36

CPC classification number: G09G3/2074 ,  G09G3/3607 ,  G09G3/3611 ,  G09G2320/0276 ,  G09G2320/0626 ,  G09G2320/0673 ,  G09G2360/145 ,  G09G2360/16

Abstract: A method of performing gamma correction for LCD panels includes: dividing the display area of a LCD panel to form n sub-areas of the display area; dividing all grey-scale images into n sets to form n sets of grey-scale images; displaying a first chosen grey-scale image of each set of grey-scale images on the corresponding sub-area of n sub-areas concurrently; detecting the brightness of the first chosen grey-scale image with a photosensor installed on the sub-area; examining if there is grey-scale image pending for detection in the set of grey scale images; extracting a gamma curve of the LCD panel; and correcting the gamma curve of the LCD panel.