专利名称：Azine derivative, process for the preparation
thereof, nematic liquid crystal compositionand liquid crystal display system comprisingsame
发明人：Haruyoshi Takatsu,Sadao Takehara,Kiyofumi
Takeuchi,Makoto Negishi,Norie
Osawa,Masashi Osawa,Shinji Ogawa,HirokazuYanagihara
申请号：US08/916026申请日：19970821公开号：US06010642A公开日：20000104
摘要：Disclosed is to provide an azine derivative as a novel liquid crystal compound, anovel process for the preparation of an asymmetrical azine in a high reaction yield with anextremely small amount of by- products such as symmetrical azines, a nematic liquidcrystal composition containing the azine derivative which exhibits a broad driving
temperature range and an excellent response for the desired high birefringence index, aliquid crystal display device such as TN-LCD, STN- LCD and TFT-LCD having improvedelectro-optical properties comprising the liquid crystal composition as a constituentmaterial, and a light- scattering type liquid crystal display system which exhibits asuppressed memory phenomenon, a higher uniformity in turbidity for display andimproved display properties and response against temperature change while maintainingand improving the required display properties such as fast switching time, lower voltage
driving, higher light-control layer resistivity and higher contrast ratio even in theforegoing light- scattering type liquid crystal display system.
申请人：DAINIPPON INK AND CHEMICALS, INC.
代理机构：Armstrong, Westerman, Hattori, McLeland & Naughton
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