Alkoxybenzene derivative, liquid-crystal composition, and liquid-crystal display element
申请人:Chisso Corporation
公开号:US06177154B1
公开(公告)日:2001-01-23
Disclosed are
(a) liquid crystalline compounds which are essential as component of the liquid crystal compositions, are excellent in miscibility with other liquid crystal compositions, particularly in the miscibility at low temperatures, and expressed by the general formula (1)
wherein R0 and R1 independently represent an alkyl group having 1 to 10 carbon atoms; ring A0, ring A1, ring A2, and ring A3 represent 1,4-cyclohexylene group, 1,3-dioxane-2,5-diyl group, 1,4-phenylene group in which one or more hydrogen atoms on the ring may be represented by a halogen atom or R2O group, pyridine-2,5-diyl group, or pyrimidine-2,5-diyl group; Z0, Z1, Z2, and Z3 represent —CH2CH2—, —CH═CH—, —C≡C—, —CH2O—, —OCH2—, —CF2O—, —OCF2—, —COO—, —OCO—, —(CH2)4—, or single bond; Q1 and Q2 represent hydrogen atom or a halogen atom; Q3 represents hydrogen atom, a halogen atom, or R2O group; R2 represents an alkyl group having 1 to 10 carbon atoms; Y represents a halogen atom, cyano group, or an alkyl group having 1 to 10 carbon atoms; l, m, n and o are 0, 1, or 2 with the proviso that 1≦l+m+n+o≦3; and the atom which constitutes this compound may be replaced by its isotope; and
(b) liquid crystal display devices fabricated by using the liquid crystal composition.
本发明涉及(a)液晶化合物,作为液晶组分至关重要,与其他液晶组分混溶性优异,尤其是在低温下的混溶性表现出色,其通式(1)表示如下:其中,R0和R1独立地表示具有1至10个碳原子的烷基基团;环A0、环A1、环A2和环A3分别表示1,4-环己基基团,1,3-二噁烷-2,5-二基基团,1,4-苯基基团,其中环上一个或多个氢原子可以由卤素原子或R2O基团代替,吡啶-2,5-二基基团或嘧啶-2,5-二基基团;Z0、Z1、Z2和Z3分别表示—CH2CH2—、—CH═CH—、—C≡C—、—CH2O—、—OCH2—、—CF2O—、—OCF2—、—COO—、—OCO—、—(CH2)4—或单键;Q1和Q2表示氢原子或卤素原子;Q3表示氢原子、卤素原子或R2O基团;R2表示具有1至10个碳原子的烷基基团;Y表示卤素原子、氰基或具有1至10个碳原子的烷基基团;l、m、n和o为0、1或2,但须满足1≤l+m+n+o≤3;组成该化合物的原子可以被其同位素替代;以及(b)利用上述液晶组分制备的液晶显示装置。