申请人:CANON KABUSHIKI KAISHA
公开号:EP0301602A2
公开(公告)日:1989-02-01
A ferroelectric liquid crystal composition, comprising at least three mesomorphic compounds represented by the following formula (I):
wherein C* denotes an asymmetric carbon atom; E denotes a mesomorphic compound residue including a divalent 6-membered ring-containing group capable of having a substituent; and A and. B are mutually different groups respectively selected from the class of (a) methyl group, (b) linear or branched alkyl groups having 2 - 18 carbon atoms capable of having a substituent, (c) linear or branched alkyloxy groups having 1 - 18 carbon atoms, (d) linear or branched alkyloxyalkyl groups having 2 - 18 carbon atoms. (e) linear or branched alkyloxycarbonyl groups having 2 - 18 carbon atoms, (f) linear or branched alkyloxycarbonylmethyl groups having 3 - 18 carbon atoms; (g) chlorine or bromine, (h) fluorine, (i) trifluoromethyl group, and (j) cyano group; the above-mentioned at least three mesomorphic compounds belonging to at least three mutually different series of compounds which are different from each other in the combination of the groups A and 8 attached to the asymmetric carbon atom respectively selected from any one of the sub-classes (a) - (j).
一种铁电液晶组合物,包含至少三种由下式(I)表示的介形化合物:
其中 C* 表示不对称碳原子;E 表示介形化合物残基,包括可具有取代基的二价 6 元环含基团;以及 A 和.B 是互不相同的基团,分别选自以下类别:(a)甲基;(b)具有 2-18 个碳原子并可具有取代基的直链或支链烷基;(c)具有 1-18 个碳原子的直链或支链烷氧基;(d)具有 2-18 个碳原子的直链或支链烷氧基烷基。(e) 具有 2-18 个碳原子的直链或支链烷氧基羰基; (f) 具有 3-18 个碳原子的直链或支链烷氧基羰甲基; (g) 氯或溴, (h) 氟, (i) 三氟甲基,以及 (j) 氰基;上述至少三种中形化合物属于至少三个互不相同的化合物系列,它们在与不对称碳原子相连的基团 A 和 8 的组合上互不相同,这些基团分别选自(a)-(j)亚类中的任一类。