圆形电极液晶垂直取向模式TFT-LCD视角特性的模拟计算  

Simulation of Viewing Angle Characteristics of Vertically Aligned TFT-LCDs with Circular Electrode

作　　者：吴双红[1] 冯亚云[1] 凌志华[1] 

机构地区：[1]中国科学院长春光学精密机械与物理研究所

出　　处：《液晶与显示》2008年第3期317-321,共5页Chinese Journal of Liquid Crystals and Displays

基　　金：国家“973”项目(No2003CB314704)

摘　　要：提出了一种圆形电极结构,将其应用于倾斜电场液晶垂直取向(Patterned Vertical Alignment,PVA)模式TFT-LCD,称为圆形电极模式。用Expert LCD软件模拟了指向矢分布和对比度视角锥分布,并对模拟计算结果进行了分析。与传统的PVA模式相比,完全圆形电极模式视角显著扩大,且高对比度的视角扩大比例更大些,结论表明具有新的电极结构的显示器件具有更好的视角特性。A circular electrode structure was presented for Patterned Vertical Alignment（PVA） mode TFT-LCD. This paper simulated its director distributions and iso-contrast contour dependent on the viewing angle for two kinds of circular electrode structures by ExpertLCD software and analyzed the simulation results. The obtained results were compared with that of the conventional PVA mode. The viewing angle of completely circular electrode mode was significantly expanded and the proportion with high contrast ratio was larger. It showed that the viewing angle characteristics of the new electrode structure is better than that of PVA.

关 键 词：垂直取向 PVA模式 圆形电极 视角特性 

分 类 号：O242.1[理学—计算数学] TN141[理学—数学]