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37.3: Optimization of Photo‐Aligned Asymmetric Ferroelectric Liquid Crystal Display Performance: Effect of Planar Layer
Author(s) -
Huang D. D.,
Chigrinov V. G.,
Kwok H. S.
Publication year - 2004
Publication title -
sid symposium digest of technical papers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.351
H-Index - 44
eISSN - 2168-0159
pISSN - 0097-966X
DOI - 10.1889/1.1821331
Subject(s) - planar , materials science , bistability , ferroelectricity , contrast ratio , liquid crystal , layer (electronics) , polyimide , optoelectronics , substrate (aquarium) , optics , smoothness , liquid crystal display , nanotechnology , computer science , physics , mathematics , oceanography , computer graphics (images) , geology , dielectric , mathematical analysis
Photo‐aligned ferroelectric liquid crystal (FLC) display reveals a perfect alignment in case of asymmetric boundary conditions, when the competition in aligning action of two solid surfaces is avoided. In this case a stable uniform photo‐alignment on one of the cell substrates spreads out to the other, which is prepared to sustain planar alignment with a degenerate azimuthal direction. In the paper, a thin polyimide film was involved to improve smoothness of planar substrate, resulting in the better electrooptical properties of FLC display. A contrast ratio of 300:1 in a static addressing mode and 82:1 in a multiplex mode was demonstrated together with a perfect bistable switching of FLC display in static and multiplex addressing regimes.