Sang Gyun Kim, Yeon Mun Jeon, Youn Sik Kim, Sae Tae Oh, and Seung Hee Lee. School of Advanced Materials Engineering, Chonbuk National University, Duckjindong 664-14, Jeonju, 561-756, South Korea
A homeotropic cell locked by a polymer wall named the LSH1 (Locked Super Homeotropic) was known to exhibit wide viewing angle, where the vertically aligned LC director tilts down symmetrically around the center of a cell giving rise to four brush schlieren textures with point singularity S = +1. Time-resolution study of the texture shows that at an instantaneous reaction is not stable enough the LC director. In addition, the LC alignment near the polymer wall strongly affects the orientation of the director in on state so that the fabrication process of the cell also should be considered carefully. To achieve voltage-dependent stable LC dynamics with fast response time, we tested various cell structures and their electro-optic characteristics were studied.
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