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45.1: High‐Contrast Homeotropic Alignment of Difluoro‐tolane Liquid Crystals
Author(s) -
Wen ChienHui,
Gauza Sebastian,
Li Jun,
Wu ShinTson,
Wang Haiying,
Liang Xiao
Publication year - 2005
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 - 10.1889/1.2036284
Subject(s) - homeotropic alignment , polyimide , materials science , birefringence , liquid crystal , dielectric , contrast ratio , contrast (vision) , figure of merit , anisotropy , optoelectronics , optics , composite material , physics , layer (electronics)
Excellent homeotropic alignment of high birefringence and negative dielectric anisotropy difluoro‐tolane liquid crystals was demonstrated using long‐chain alcohol evaporated SiO 2 inorganic layers and buffed polyimide layers. The addition of 5–10% isothiocyanato tolane not only improves the contrast ratio but also enhance the figure‐of‐merit. A disadvantage is in the increased threshold voltage.