公开(公告)号：US5258135A

公开(公告)日：1993-11-02

申请号：US912118

申请日：1992-07-09

申请人： Keiko Uchida ,  Taku Hirose ,  Shinichi Sawada

发明人： Keiko Uchida ,  Taku Hirose ,  Shinichi Sawada

IPC分类号： C09K19/30 ,  G02F1/13

CPC分类号： C09K19/3003

摘要： Liquid crystal compositions comprising: at least one of the compounds of the general formula (I) and at least one of the compounds of the general formula (II); and optionally including at least one of the compounds of the general formula (III), or, when compound (III) is present, optionally including at least one of the compounds of the general formula (IV) are provided. ##STR1## All the symbols are as defined in the appended claims, namely, R.sup.1 is an alkyl group having 1 to 5 carbon atoms; R.sup.2 is an alkyl group having 2 to 8 carbon atoms; R.sup.3 is an alkyl group having 1 to 5 carbon atoms; R.sup.4 is an alkyl group having 2 to 8 carbon atoms; R.sup.5 is H or F; R.sup.6 is an alkyl group having 1 to 8 carbon atoms, an alkoxyl group having 1 to 8 carbon atoms, F, or a CN group; and R.sup.7 is an alkyl group having 2 to 10 carbon atoms or an alkenyl group having 2 to 10 carbon atoms. The compositions are suitable for use in highly multiplexed displays of the supertwisted birefringence effect mode.

摘要翻译： 液晶组合物，其包含：至少一种通式（I）的化合物和至少一种通式（II）的化合物; 并且任选地包括至少一种通式（III）的化合物，或者当存在化合物（III）时，任选地包括至少一种通式（IV）的化合物。 （Ⅰ）通式（Ⅱ）：通式（Ⅱ）：（Ⅰ）通式（Ⅱ）通式（Ⅲ）通式（Ⅲ）通式（Ⅳ）通式（Ⅳ） 符号如所附权利要求中所定义，即R1为具有1至5个碳原子的烷基; R2是具有2-8个碳原子的烷基; R3是具有1至5个碳原子的烷基; R4是具有2-8个碳原子的烷基; R5为H或F; R6是碳原子数为1〜8的烷基，碳原子数1〜8的烷氧基，F或CN基团。 R 7为碳原子数2〜10的烷基或碳原子数2〜10的烯基。 该组合物适用于超扭曲双折射效应模式的高度复用的显示器。

公开(公告)号：US5202055A

公开(公告)日：1993-04-13

申请号：US407286

申请日：1989-09-14

申请人： Manabu Uchida ,  Kisei Kitano ,  Shinichi Sawada ,  Keiko Uchida

发明人： Manabu Uchida ,  Kisei Kitano ,  Shinichi Sawada ,  Keiko Uchida

IPC分类号： C07C255/54 ,  C09K19/30 ,  C09K19/54

CPC分类号： C07C255/54 ,  C09K19/3003 ,  C07C2101/14

摘要： A compound and a liquid crystal composition containing the compound are provided, which compound, when added to a nematic liquid crystal composition, increases the dielectric anisotropy value, lowers its threshold voltage and raises the ratios of elastic constants and hence makes steep the voltage-transmittance characteristic,which compound is an alkenyl ether compound expressed by the formula ##STR1## wherein R is a 2-8C alkyl group having a double bond at its end or a double bond of trans configuration at an optional position and n is 0 to 4.

公开(公告)号：US5102577A

公开(公告)日：1992-04-07

申请号：US510629

申请日：1990-04-18

申请人： Keiko Uchida ,  Taku Hirose ,  Shinichi Sawada

发明人： Keiko Uchida ,  Taku Hirose ,  Shinichi Sawada

IPC分类号： G02F1/13 ,  C09K19/30 ,  C09K19/42

CPC分类号： C09K19/42 ,  C09K19/3003

摘要： Liquid crystal compositions and display devices using the compositions are disclosed. The compositions contain, as main components, at least one compound of the general formula (I), and at least one compound of the general formula (II), or, as well as the above components, at least one compound selected from the compounds of the general formulas (III), (IV) and (V), and/or at least one compound of the general formula (VI). ##STR1## (wherein all the symbols are as defined in the appended claims).