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设计和研制高对比度宽视角ＬＣＤ屏具有非常重要的意义。准直背光源加漫射观察屏的液晶盒外光学补偿法在改善ＬＣＤ视角的同时，还可提高ＬＣＤ的对比度。本文对准直膜和漫反射膜进行设计。
Design and development of high-contrast wide viewing angle LCD screen has a very important significance. Collimation backlight plus diffuse observation of the liquid crystal cell outside the optical compensation method in improving the LCD viewing angle, but also improve the contrast of the LCD. In this paper, collimating film and diffuse film are designed.