Naphthalene compound with terminal hydrogen, liquid crystal composition including the compound, and LCD device including the liquid crystal composition
申请人:Chisso Petrochemical Corporation
公开号:US07790915B2
公开(公告)日:2010-09-07
A liquid crystal (LC) compound having generally required physical properties, low viscosity, proper optical anisotropy, proper dielectric anisotropy and good compatibility with other LC compounds is described. An LC composition including the compound and an LCD device including the composition are also described. The compound is expressed by formula (1a):
wherein the ring A1 and the ring A2 are independently 1,4-phenylene, pyridine-2,5-diyl, pyrimidine-2,5-diyl or naphthalene-2,6-diyl, in which any hydrogen can be replaced by halogen; Z1, Z2 and Z3 are independently a single bond, —(CH2)2—, —(CH2)4—, —CH═CH—, —C≡C—, —CF2O—, —OCF2—, —COO— or —OCO—; Xa, Xb, Xc, Xd, Xe and Xf are independently hydrogen or fluorine; Y is —OCH2F, —OCHF2, —OCF3, —SCH2F, —SCHF2, —SCF3, —CH2F, —CHF2, —CF3, fluorine or chlorine; La and Lb are independently hydrogen or fluorine; and “l” and “m” are independently equal to 0 or 1.
本文描述了一种液晶(LC)化合物,具有通常所需的物理性质,低粘度,适当的光学各向异性,适当的介电各向异性和与其他LC化合物良好的相容性。还描述了包括该化合物的LC组合物和包括该组合物的LCD设备。该化合物由式(1a)表示:其中环A1和环A2分别是1,4-苯撑,
吡啶-2,5-二基,
嘧啶-2,5-二基或
萘-2,6-二基,其中任何氢均可被卤素取代;Z1、Z2和Z3独立地为单键,-(
CH2)2-,-( )4-,-CH═CH-,-C≡C-,-
CF2O-,-O
CF2-,-COO-或-OCO-;Xa、Xb、Xc、Xd、Xe和Xf独立地为氢或
氟;Y为-O F,-O ,-O ,-S F,-S ,-S ,- F,-
CHF2,-
CF3,
氟或
氯;La和Lb独立地为氢或
氟;“l”和“m”独立地等于0或1。