Patent ID: 9224361
Filing Date: 2015-12-29
Classification: G09G

Abstract:
1. A method of compensating the brightness of a liquid crystal module, the method comprises: acquiring an image of an image displayed by the liquid crystal module to obtain an acquired image; comparing the acquired image with a standard image to find a dark region; calculating a compensation coefficient for each pixel in the dark region, wherein the step of calculating the compensation coefficient for each pixel in the dark region comprises: executing multi-step quantization for brightness of the acquired image in the dark region by means of a predetermined brightness quantization unit; calculating brightness step difference between each pixel in the dark region and a corresponding pixel of the standard image; calculating a ratio of the brightness step difference between a brightness of each pixel in the dark region and a brightness of the corresponding pixel of the standard image; and taking the ratio as the compensation coefficient; and storing the calculated compensation coefficient in a display control circuit of the liquid crystal module; when the liquid crystal module is driven for display, compensating backlight units corresponding to the pixels in the dark region.