反射式双稳态扭曲向列相液晶显示器的光学优化  

Optical Optimization of Reflective Bistable TwistedNematic Liquid Crystal Displays

作　　者：解志良[1] 郑春阳[1] 徐寿颐[1] 高鸿锦[1] 郭海成[2] 

机构地区：[1]中国北京清华大学化学系液晶技术工程研究中心,北京100084 [2]香港科技大学电子与电机工程系显示器研究中心

出　　处：《现代显示》2000年第1期9-15,共7页Advanced Display

摘　　要：利用参数空间方法,优化了反射式双稳态扭曲向列相液晶显示的对比度。对比度作为显示器的扭曲角、盒厚、与双折射率乘积的函数,通过绘制图线,可以清楚地看到具有高对比度的参数区域。还研究了两个双稳扭曲态的绝对透光率和色散。结果表明,当入射光为偏振光时,经过光学优化的反射式双稳态显示器可获得大于100的对比度以及100%的反射率。The contrast ratio of reflective bistable twisted nematic displays are optimized by means of a parameter space approach. By plotting the contrast ratio as a function of the twist angle and thickness-birefringence product of the display, the regions where the display shows the best contrast ratio are clearly shown. Both the absolute reflectance and wavelength dispersion of two bistable twisted states are investigated. It is confirmed that high contrast ratio of over 100 and reflectance of 100% with polarized light input are possible for such reflectance bistable displays.

关 键 词：双稳态 反射式 光学优化 BTN 液晶显示器 

分 类 号：TN873.93[电子电信—信息与通信工程]