超扭曲向列型液晶显示器的光学特性  

Optics Properties of STN-LCD

作　　者：项颖[1] 

机构地区：[1]中山大学微电子研究所,广州510275

出　　处：《光电子技术》1993年第2期52-65,共14页Optoelectronic Technology

摘　　要：用 Frank 的连续弹性体理论和光学“4×4”矩阵法,研究和计算了STN-LCD 的光学性质,包括光透过率与外加电压、视角、波长的关系。计算表明:(1)较大的弹性比 K_(33)/K_(11),较小的 K_(22)/K_(11),较小的介电各向异性Δε,较小的预倾角θ_0将会提高 STN-LCD 的多路寻址能力;(2)T 随视角的交化很小,说明STN-LCD 具有宽的观看范围。明显优于 TN-LCD;(3)减小光学参量Δ_n·d 和改变偏振片的放置可以消除 STN-LCD 的固有色散(OMI-LCD),但这是以牺牲多路寻址能力为代价的。Frank's continuum elastic theory and optics“4×4”matrix are used to study the optics properties of STN-LCD,including the multiplexable,the relation of T (light transmission)versus view angle and wavelength.The calculated results indicate that (1)larger elastic constant ratio K_(33)/K_(11),smaller K_(22)/K_(11),smaller dielectric anisotropy △ε and lower pretilt angle θ_0 will improve the multiplexabte of STN-LCD.(2)Tis almost con- stant in spite of various view angle,which means STN-LCD has a wide view range.This is obviously better than TN-LCD.(3)By reducing the optical path difference △n·d and transfering the polarizer configuration,we can get an achromatic LCD(OMI-LCD),but it is at the cost of its multiplexable.

关 键 词：超扭曲 液晶显示器 光学特性 视角 

分 类 号：TN141.9[电子电信—物理电子学]