反射式垂直排列液晶顯示器之特性研究

Abstract

液晶盒參數對於液晶顯示器的光學特性有很大的影響，而目前的文獻中並沒有準確量測反射式垂直排列液晶盒厚度及預傾角的方法。在本篇論文中我們藉由量測液晶層的相位差，經由理論分析可同時得到反射式垂直排列液晶盒的厚度及預傾角。另一方面我們也藉由模擬及實驗上的觀察探討邊際電場在不同畫素大小及畫素間距下對於反射率及對比度的影響。

The optical properties of LCDs are sensitive to the structural parameters of liquid crystal cells. At present, there is no accurate method for the cell gap and pretilt angle measurements of reflective vertical-alignment liquid crystal displays. In this thesis, we proposed a new method to determine both the cell gap and pretilt angle of reflective VA-LCDs simultaneously from phase retardation measurement. On the other hand, we investigate the influences of fringing field effects on the reflectance and the contrast ratio with different pixel sizes and pixel gaps via simulations and experimental observations.