[EN] LIQUID CRYSTAL COMPOUND COMPRISING TWO CONDENSED AND SUBSTITUTED RINGS [FR] COMPOSÉ DE CRISTAUX LIQUIDES COMPRENANT DEUX CYCLES CONDENSÉS ET SUBSTITUÉS
[EN] LIQUID CRYSTAL COMPOUND COMPRISING TWO CONDENSED AND SUBSTITUTED RINGS [FR] COMPOSÉ DE CRISTAUX LIQUIDES COMPRENANT DEUX CYCLES CONDENSÉS ET SUBSTITUÉS
Liquid crystal compound comprising two condensed and substituted rings
申请人:Nishikawa Hideyuki
公开号:US20070176145A1
公开(公告)日:2007-08-02
A new liquid crystal compound comprises two condensed and substituted rings. The ring preferably is a five-membered heterocyclic ring. The heterocyclic ring is preferably condensed with benzene ring or an aromatic six-membered heterocyclic ring. The benzene ring or the aromatic six-membered heterocyclic ring is preferably substituted with a group comprising a cyclic structure and a chain structure. The liquid crystal compound is advantageously used in preparation of a thin phase retarder, such as a wide-ranged λ/4 plate, which gives inverse wavelength distribution. The phase retarder can be easily produced according to a simple process by using the new liquid crystal compound.
Liquid crystalline compound, liquid crystalline composition and retardation film
申请人:Nishikawa Hideyuki
公开号:US20080169448A1
公开(公告)日:2008-07-17
To provide a liquid crystalline composition, which can be obtained by mixing a plurality of liquid crystalline composition search of which can exhibit different liquid crystal phases from one another, being capable of exhibiting a biaxial liquid crystal phase, a liquid crystalline composition contains a liquid crystalline composition R which exhibits a liquid crystal phase having a positive birefringence; and a liquid crystalline composition D which exhibits a liquid crystal phase having a negative birefringence, in which the liquid crystalline composition R comprises a compound having a rectangular plate-like shape.
Liquid Crystal Composition and Retardation Plate
申请人:Nishikawa Hideyuki
公开号:US20090212255A1
公开(公告)日:2009-08-27
A liquid crystal composition is provided and includes a liquid crystal compound a chiral agent. The liquid crystal compound has an intrinsic birefringence Δn(λ) at a wavelength λ satisfying formula (1): Δn(450 nm)/Δn(550 nm)<1.0.