The Study of Ferroelectric Liquid Crystal Binary Phase Grating Devices

• Main Authors: Chin-Wei Yang, 楊謹瑋
• Other Authors: Huang-Ming Philip Chen
• Format: Others
• Language: en_US
• Published: 2008
• Online Access: http://ndltd.ncl.edu.tw/handle/31285682137092644873

碩士 === 國立交通大學 === 顯示科技研究所 === 96 === A novel ferroelectric liquid crystal phase grating has been successfully prepared by periodically ITO (indium-tin-oxide) patterned stripes cell. Under external driving voltage, LC molecules were reoriented in ITO areas and cause phase difference between the areas without ITO. The binary phase gratings were formed within periodically alternating domains. In this work, ferroelectric liquid crystal materials (R3206-50) were prepared. Low driving voltage FLC material, R3206-50 with Vsat. at 5V (AZ Electronic Materials), and its were under evaluation for liquid crystal optical devices application. The horizontal chevron alignment defects were suppressed by asymmetric hybrid alignment cell, and the fringing field effect was reduced with low driving voltage (5V). The response time of R3206-50 was under 1.3 ms in a 1.6 �慆 cell. Thus, a desirable fast switching, low driving voltage, low fringing field effect, low scattering effect and easy process FLC grating was presented.