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    Electrooptical liquid crystal system
    1.
    发明授权
    Electrooptical liquid crystal system 失效
    电光液晶系统

    公开(公告)号：US5958290A

    公开(公告)日：1999-09-28

    申请号：US392682

    申请日：1995-02-23

    申请人： David Coates ,  Shirley Marden ,  Graham Smith ,  Ulrich Finkenzeller ,  Volker Reiffenrath ,  Reinhard Hittich ,  Stefan Wilhelm

    发明人： David Coates ,  Shirley Marden ,  Graham Smith ,  Ulrich Finkenzeller ,  Volker Reiffenrath ,  Reinhard Hittich ,  Stefan Wilhelm

    IPC分类号： C09K19/12 ,  C09K19/30 ,  C09K19/42 ,  C09K19/44 ,  C09K19/54 ,  G02F1/1334 ,  C09K19/52 ,  G02F1/133

    CPC分类号： G02F1/1334 ,  C09K19/12 ,  C09K19/3003 ,  C09K19/3028 ,  C09K19/42 ,  C09K19/44 ,  C09K19/544

    摘要： The invention relates to an electrooptical liquid crystal systemwhich contains a dielectrically positive liquid crystal mixture and a further optically transparent medium between 2 electrodes which are optionally applied to substrate sheets,whose liquid crystal molecules in the switched-off state have an irregular orientation,in which one of the refractive indices of the liquid crystal mixture essentially agrees with the refractive index of the matrix n.sub.M and/or in which the quotient of the mass of the liquid crystal mixture and of the mass of the optically transparent medium is 1.5 or more and,which, independently of the polarization of the incident light, has a reduced transmission in one of the two switch states compared to the other state andwhose liquid crystal mixture contains one or more compounds of the formula I ##STR1## in which Q.sup.1 is ##STR2## are independently of one another trans-1,4-cyclohexylene, 1,4-phenylene, 2-fluoro-1,4-phenylene, 3-fluoro-1,4-phenylene and one of A.sup.1 and, if present, A.sup.2, is also pyridine-2,5-diyl, pyrimidine-2,5-diyl, 1,3-dioxane-2,5-diyl, tetrahydropyran-2,5-diyl or naphthalene-2,6-diyl,Z.sup.1 and Z.sup.2 are independently of one another a single bond, --CH.sub.2 CH.sub.2 --, --COO--, --OCO--, --C.tbd.C--, --CH.sub.2 O-- or any desired combinations of these bridge groups,Y and X are independently of one another H or F, and one of X and Y is also Cl,W is --CN, --Cl, --F, --CF.sub.3, --OCF.sub.3, --OCHF.sub.2, --NCS or R.sup.2R.sup.1 and R.sup.2 independently of one another are alkyl having 1-12 C atoms, in which one or 2 non-adjacent CH.sub.2 groups can also be replaced by --O-- or --HC.dbd.CH--, andm is 0, 1 or 2.

    摘要翻译： 本发明涉及一种电光学液晶体系，其包含介于两个电极之间的介电正极液晶混合物和另外的光学透明介质，所述两个电极任选地施加到基板上，所述基板在关闭状态下的液晶分子具有不规则取向， 液晶混合物的折射率之一基本上与基体nM的折射率一致，和/或其中液晶混合物的质量和光学透明介质的质量的商为1.5以上， ，其独立于入射光的偏振，与其他状态相比，在两种开关状态之一中具有降低的透射率，并且其液晶混合物含有一种或多种式I的化合物，其中Q1独立地为一个 另一个反式-1,4-亚环己基，1,4-亚苯基，2-氟-1,4-亚苯基，3-氟-1,4-亚苯基和A1中的一个，如果 t，A2也是吡啶-2,5-二基，嘧啶-2,5-二基，1,3-二恶烷-2,5-二基，四氢吡喃-2,5-二基或萘-2,6-二基， Z 1和Z 2彼此独立地是单键，-CH 2 CH 2 - ， - COO - ， - OCO-， - C 3BOND C - ， - CH 2 O-或这些桥基的任何所需组合，Y和X彼此独立地 H或F，X和Y中的一个也是Cl，W是-CN，-Cl，-F，-CF 3，-OCF 3，-OCHF 2，-NCS或R 2，R 1和R 2彼此独立地是具有1- 12个C原子，其中一个或两个不相邻的CH2基团也可以被-O-或-HC = CH-取代，m是0,1或2。

    Electrooptical liquid-crystal system
    2.
    发明授权
    Electrooptical liquid-crystal system 失效
    电光液晶系统

    公开(公告)号：US5344587A

    公开(公告)日：1994-09-06

    申请号：US687852

    申请日：1991-06-03

    申请人： David Coates ,  Shirley Marden ,  Graham Smith ,  Ulrich Finkenzeller ,  Volker Reiffenrath ,  Reinhard Hittich ,  Stefan Wilhelm

    发明人： David Coates ,  Shirley Marden ,  Graham Smith ,  Ulrich Finkenzeller ,  Volker Reiffenrath ,  Reinhard Hittich ,  Stefan Wilhelm

    IPC分类号： G02F1/13 ,  C09K19/00 ,  C09K19/12 ,  C09K19/30 ,  C09K19/42 ,  C09K19/44 ,  C09K19/54 ,  G02F1/133 ,  C09K19/52

    CPC分类号： C09K19/12 ,  C09K19/3003 ,  C09K19/3028 ,  C09K19/42 ,  C09K19/44 ,  C09K19/544

    摘要： The invention relates to an electrooptical liquid crystal systemwhich contains a dielectrically positive liquid crystal mixture and a further optically transparent medium between 2 electrodes which are optionally applied to substrate sheets,whose liquid crystal molecules in the switched-off state have an irregular orientation,in which one of the refractive indices of the liquid crystal mixture essentially agrees with the refractive index of the matrix n.sub.M and/or in which the quotient of the mass of the liquid crystal mixture and of the mass of the optically transparent medium is 1.5 or more and,which, independently of the polarization of the incident light, has a reduced transmission in one of the two switch states compared to the other state andwhose liquid crystal mixture contains one or more compounds of the formula I ##STR1## in which Q.sup.1 is ##STR2## are independently of one another trans-1,4-cyclohexylene, 1,4-phenylene, 2-fluoro-l,4-phenylene, 3-fluoro-1,4-phenylene and one of A.sup.1 and, if present, A.sup.2, is also pyridine-2,5-diyl, pyrimidine-2,5-diyl, 1,3-dioxane-2,5-diyl, tetrahydropyran-2,5-diyl or naphthalene-2,6-diyl,Z.sup.1 and Z.sup.2 are independently of one another a single bond, --CH.sub.2 CH.sub.2 --, --COO--, --OCO--, --C--C--, --CH.sub.2 O-- or any desired combinations of these bridge groups,Y and X are independently of one another H or F, and one of X and Y is also Cl,W is --CN, --Cl, --F, --CF.sub.3, --OCF.sub.3, --OCHF.sub.2, --NCS or R.sup.2R.sup.1 and R.sup.2 independently of one another are alkyl having 1-12 C atoms, in which one or 2 non-adjacent CH.sub.2 groups can also be replaced by --O-- or --HC.dbd.CH--, andm is 0, 1 or 2.

    摘要翻译： 本发明涉及一种电光学液晶体系，其包含介于两个电极之间的介电正极液晶混合物和另外的光学透明介质，所述两个电极任选地施加到基板上，所述基板在关闭状态下的液晶分子具有不规则取向， 液晶混合物的折射率之一基本上与基体nM的折射率一致，和/或其中液晶混合物的质量和光学透明介质的质量的商为1.5以上， ，其独立于入射光的偏振，与其他状态相比，在两种开关状态之一中具有减小的透射率，并且其液晶混合物含有一种或多种式I的化合物I I，其中Q1是 相对于反式-1,4-亚环己基，1,4-亚苯基，2-氟-1,4-亚苯基，3-氟-1,4-亚苯基， A1中的一个，如果存在，A2也是吡啶-2,5-二基，嘧啶-2,5-二基，1,3-二恶烷-2,5-二基，四氢吡喃-2,5-二基或萘 -2,6-二基，Z1和Z2彼此独立地为单键，-CH2CH2-，-COO-，-OCO-，-CC-，-CH2O-或这些桥基的任何所需组合，Y和X 独立地为H或F，X和Y中的一个也是Cl，W是-CN，-Cl，-F，-CF 3，-OCF 3，-OCHF 2，-NCS或R 2 R 1和R 2彼此独立地 是具有1-12个C原子的烷基，其中一个或两个不相邻的CH 2基团也可被-O-或-HC = CH-取代，m是0,1或2。