Liquid crystal display device and method for compensating image thereof
AssigneesInnocom Technology (Shenzhen) Co., Ltd., Innolux Display Corp.
InventorsWEI GUO, SHUN-MING HUANG
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Abstract
An exemplary liquid crystal display (LCD) device includes a liquid crystal pane and a gamma correction module. The liquid crystal panel includes a plurality of pixels including normal pixels and abnormal pixels. For a same gray scale, the normal pixels are driven by a first gray scale signal and the abnormal pixels are driven by a second gray scale signal, in order that the brightness of an image displayed by the normal pixels and the brightness of the image displayed by the abnormal pixels are substantially identical.
Claims20
A liquid crystal display (LCD) device, comprising:
- a gamma correction module and a liquid crystal panel, the liquid crystal panel comprising a plurality of pixels including normal pixels and abnormal pixels;
- wherein a first gray scale signal corresponding to a current gray scale of a functioning pixel of the liquid crystal panel is provided to the gamma correction module, wherein when the functioning pixel is a normal pixel, the gamma correction module outputs the first gray scale signal to the normal pixel, and when the functioning pixel is an abnormal pixel, the gamma correction module regulates the first gray scale signal and outputs a corresponding second gray scale signal to the abnormal pixel, such that brightness of an image displayed by the normal pixel and the brightness of the image displayed by the abnormal pixel are substantially identical for a same gray scale.
A method for compensating an image of an LCD device comprising a gamma correction module and a liquid crystal panel, the liquid crystal panel comprising a plurality of pixels including abnormal pixels and normal pixels, the gamma correction module stores coordinates of the abnormal pixels, the method comprising:
- providing a first gray scale signal corresponding to a current gray scale of a functioning pixel of the liquid crystal panel to the gamma correction module, and acquiring coordinates of the functioning pixel corresponding to the first gray scale signal;
- comparing the coordinates of the functioning pixel with the coordinates of the abnormal pixels;
- wherein when the coordinates of the functioning pixel are substantially identical with the coordinates of one of the abnormal pixels, the functioning pixel is recognized as an abnormal pixel, and gamma correction module regulates the first gray scale signal and acquiring a corresponding second gray scale signal to drive the abnormal pixel, and when the coordinates of the functioning pixel are different with the coordinates of each the abnormal pixel, the functioning pixel is recognized as a normal pixel, and gamma correction module outputs the first gray scale signal to drive the normal pixel, in order that the brightness of an image displayed by the abnormal pixels driven by the second gray scale is substantially identical with the brightness of the image displayed by the normal pixels driven by the first gray scale for a same gray scale.
Dependencies are inferred from the claim text.