公开(公告)号：US6149990A

公开(公告)日：2000-11-21

申请号：US117706

申请日：1998-08-04

申请人： Yoshiji Egami ,  Masatoshi Fukushima ,  Yasuko Sekiguchi ,  Makoto Tanimoto ,  Etsuo Nakagawa

发明人： Yoshiji Egami ,  Masatoshi Fukushima ,  Yasuko Sekiguchi ,  Makoto Tanimoto ,  Etsuo Nakagawa

IPC分类号： C07C69/757 ,  C07C69/773 ,  C07C69/92 ,  C07C69/94 ,  C09K19/30 ,  C09K19/42 ,  C07C25/13 ,  C07C69/75 ,  C07C69/76 ,  C09K19/20

CPC分类号： C07C69/92 ,  C07C69/757 ,  C07C69/94 ,  C09K19/3001 ,  C09K19/3068 ,  C09K19/42 ,  Y10T428/10

摘要： A compound represented by the following general formula (I), a liquid crystal composition comprising the same, and a liquid crystal element using this liquid crystal composition. ##STR1## (wherein B.sub.1 and B.sub.2 represent independently a trans-1,4-cyclohexylene group or a 1,4-phenylene group wherein at least one hydrogen atom on the six-membered ring is optionally substituted by a halogen atom, Y represents a halogen-substituted alkyl group having 1 to 3 carbon atoms, a halogen-substituted alkoxy group having 1 to 3 carbon atoms, a cyano group, a fluorine atom or a chlorine atom, X represents a fluorine atom, a chlorine atom or a hydrogen atom, R.sub.1 represents an alkyl group having 1 to 10 carbon atoms or an alkoxy group having 1 to 10 carbon atoms, n and m represent independently 1 or 2 and p represents 0 or 1.)The compound of the present invention exhibits a large dielectric anisotropy, low threshold voltage, and favorable temperature-dependency of threshold voltage, as well as a favorable miscibility with a known liquid crystal compound, and therefore a liquid crystal composition comprising the compound can provide low voltage-operable liquid crystal display elements.

摘要翻译： 由以下通式（I）表示的化合物，包含该化合物的液晶组合物和使用该液晶组合物的液晶元件。 （其中B1和B2独立地表示反式-1,4-亚环己基或1,4-亚苯基，其中六元环上的至少一个氢原子任选被卤素原子取代，Y表示卤素取代的 具有1至3个碳原子的烷基，具有1至3个碳原子的卤素取代的烷氧基，氰基，氟原子或氯原子，X表示氟原子，氯原子或氢原子，R1表示 具有1-10个碳原子的烷基或具有1-10个碳原子的烷氧基，n和m独立地表示1或2，p表示0或1.）本发明的化合物具有大的介电各向异性，低阈值 电压和阈值电压的良好的温度依赖性，以及与已知的液晶化合物的良好的混溶性，因此包含该化合物的液晶组合物可以提供低电压可操作的液晶显示元件。