基于双线性插值最值滤波的Mura改善方法

为改善液晶面板的Mura缺陷, 提出了一种灰度补偿校正Mura缺陷的方法.针对典型灰度级的亮度分布矩阵, 采用双线性插值最值滤波法进行图像滤波, 计算全屏目标亮度, 根据各像素点拟合出的亮度-灰度关系曲线, 得到各灰度级的补偿数据.实验结果表明, 经过Mura补偿, 55英寸的液晶模组上显示灰度图像的Mura条纹消失, Mura指数降低, 且补偿并未对屏幕总体亮度和对比度等造成明显改变.

Abstract

In order to improve the Mura defect of the liquid crystal display, a grayscale compensation was proposed. Based on the brightness distribution matrix of typical grayscales, bilinear interpolation and the most value filtering was used to filter image, and then calculate the target brightness of the full screen. According to the fitted curve of grayscales and brightness, the compensation data of grayscales was obtained. The results of the experiments which performed on a 55-inch liquid crystal display module show that Mura stripes of the images diplayed on the module disappeared, and the Mura indexes decreased by Mura compensation.It has little influence on the overall brightness and contrast of displayed image.

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梁志虎, 张小宁, 岳俊峰, 屠震涛, 黄泰钧, 梁鹏飞, 王利民. 基于双线性插值最值滤波的Mura改善方法[J]. 光子学报, 2016, 45(7): 070710001. LIANG Zhi-hu, ZHANG Xiao-ning, YUE Jun-feng, TU Zhen-tao, HUANG Tai-jun, LIANG Peng-fei, WANG Li-min. Improvement of Mura Based on the Maximum/Minimum Bilinear Interpolation Method[J]. ACTA PHOTONICA SINICA, 2016, 45(7): 070710001.

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