廣視角型液晶顯示器內液晶分子運動模擬

The simulation of liquid crystal molecules in wide viewing angle liquid crystal display

林文逸(Wen-yi Lin)

指導教授 ： 黃振球

元智大學/工程學院/化學工程與材料科學學系/碩士(2003年)

摘要

利用日本SHINTECH公司所研發之模擬軟體LCD MASTER，計算不同邊界條件下液晶顯示裝置所顯現出來的光學性質及分子運動狀態：研究(1)液晶分子於施加不同電場時仰角(Theta)和扭轉角(Phi)的變化；(2)Gibbs energy和Helmholtz energy的轉變；(3)TN型液晶分子之Optical Bounce現象；(4)STN(180o)型液晶分子之雙安定模式、背光光源波長以及Cell gap對於視角的影響；(5)液晶分子配向方向和偏光板光軸方向夾角不同時對透光度的影響。並利用模擬結果作為改善液晶顯示器視角的參考依據。

關鍵字

液晶 ； 分子運動 ； 模擬 ； 視角

並列摘要

This paper tried to use LCD Master from SHINTECH to calculate the optical properties and molecular motion of LCD in different boundary condition. Many topics were studied such as (1) The change of tilt angle (θ) and twist angle (φ),(2) The change of energy and Helmholtz energy of the LC molecule in different applied electric field,(3) The optical bounce of TN type LC molecule,(4) The bi-stable mode and the viewing angle dependence of backlight wavelength and cell gap in STN LC display,(5) The transmittance dependence of LC displays at different angles between LC molecular’s rubbing direction and polarization axis direction of polarizer. In additional, we can use simulation result to improve the angle dependence of TN displays.

並列關鍵字

liquid crystal ； molecular motion ； simulation ； viewing angle

參考文獻

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