Dual-Mode Liquid Crystal Display

• Main Authors: Chun-Ting Chang, 張均廷
• Other Authors: Bau-Jy Liang
• Format: Others
• Language: zh-TW
• Published: 2012
• Online Access: http://ndltd.ncl.edu.tw/handle/16750424188297798340

碩士 === 逢甲大學 === 電機工程所 === 100 === In this study, we add the bistable function to the now existing refresh function displays, that is, we want to develop the first dual-mode liquid crystal display. First, we study the meta-bistable phenomenon of TFT-LCD with high resistance liquid crystals. We observe the vanishing time of residual image sticking of LC cells biased by the pulse which can adjust different pulse time. Qualitatively observe the meta-bistable phenomenon through the eyes and evaluate the practicability of the transient meta-bistable time. In order to increase the experimental accuracy, we successfully make an optical measurement box with adjustable relative humidity and temperature function. We put the LC cells into the optical measurement box during the experiment. From the optical measurement (Transmittance – meta-bistable time), we find that the more pulse time apply, the longer meta-bistable time maintain. For the grayscale of the dual-mode liquid crystal display, we have the different grayscale with applying the different pulse voltage, but there is a limit of the meta-bistable time of the grayscale. After stressing LC cells by applying the pulse voltage, the electro-optical of the LC cells do not changed obviously；it means that the LC cells still have the a good electro-optical characteristic. Finally, we discuss the dual-mode liquid crystal display with different view angles.