Study on the dynamic mechanism of liquid crystal devices with fast optical reponse

• Main Authors: Chiu-Lien Yang, 楊秋蓮
• Other Authors: Shu-Hsia Chen
• Format: Others
• Language: en_US
• Published: 2002
• Online Access: http://ndltd.ncl.edu.tw/handle/63708065526716312587

博士 === 國立交通大學 === 光電工程所 === 90 === Liquid crystal devices have been widely used in our daily life, however the drawback of slow response limits the application of liquid crystal devices (such as true video-rate TV). Recently, the p-cell or OCB-cell had drawn consideration. However, the bend state of p-cell is not stable at low voltage. Therefore it takes a long warm-up time before working this cell and there are domains emerge between the pixels to damage the image quality when working it. We investigated the fast-response mechanism of p-cell and 3p/2-cell in detail. And designed a twisted p-cell witch possesses fast optical response as p-cell but without the unstable problem. We also improved the optical response of 3p/2-cell to 2.0 ms. Finally we explained the slow response mechanism of VA-90°, VA-180° and VA-270°.