Electrooptical display element
    54.
    发明授权
    Electrooptical display element 失效
    电光显示元件

    公开(公告)号:US5288427A

    公开(公告)日:1994-02-22

    申请号:US815832

    申请日:1991-12-24

    IPC分类号: C09K19/30 C09K19/34 C09K19/52

    摘要: Compounds of the formula IR.sup.1 --A.sup.1 --Z.sup.1 --A--O--R.sup.2in whichR.sup.1 and R.sup.2, independently of one another, are each alkyl having 1 to 9 C atoms, in which, in addition, one or two CH.sub.2 groups may be replaced by --O--, --CO--, --O--CO--, --CO--O-- and/or --CH.dbd.CH--, where two O atoms are not linked directly to one anther, or one of the two groups R.sup.1 and R.sup.2 is alternatively H,Z.sup.1 is --CH.sub.2 --O--, --OCH.sub.2 --, --CH.sub.2 CH.sub.2 -- or a single bond,A.sup.1 is trans-1,4-cyclohexylene in which, in addition one or two nonadjacent CH.sub.2 groups may be replaced by O and/or S, or 1,4-cyclohexenylene, andA is unsubstituted or fluorine-substituted 1,4-phenylene, can be used as components of liquid-crystalline dielectrics containing at least three liquid-crystalline compounds for shortening the switch-on time T.sub.on of electrooptical display elements based on a TN cell on switching the voltage from a first voltage below or approximately at the threshold voltage to a second voltage on the increase of the electrooptical characteristic line.

    摘要翻译: 其中R 1和R 2彼此独立地为具有1至9个C原子的烷基的式I R1-A1-Z1-AO-R2的化合物,其中另外一个或两个CH 2基团可以被 -O-,-CO-,-O-CO-,-CO-O-和/或-CH = CH-,其中两个O原子不直接连接到一个花药,或者两个基团R1和R2之一是 或者H,Z 1是-CH 2 -O - , - OCH 2 - , - CH 2 CH 2 - 或单键,A 1是反式-1,4-亚环己基,其中一个或两个不相邻的CH2基团可被O和/ 或S或1,4-亚环己烯基,A为未取代的或氟取代的1,4-亚苯基,可用作含有至少三种液晶化合物的液晶电介质的组分,以缩短接通时间Ton 基于TN单元的电光显示元件在电压特性线的增加时将电压从低于或接近阈值电压的第一电压切换到第二电压。

    Bicyclooctane derivatives
    58.
    发明授权
    Bicyclooctane derivatives 失效
    双环辛烷衍生物

    公开(公告)号:US4707295A

    公开(公告)日:1987-11-17

    申请号:US843407

    申请日:1986-03-24

    摘要: Bicyclooctane derivatives of the formula IR.sup.1 --A.sup.1 --A.sup.2 --R.sup.2 IwhereinR.sup.1 and R.sup.2 independently of one another are each an alkyl group which has 1-12 C atoms and in which it is also possible for one or two non-adjacent CH.sub.2 groups to be replaced by O atoms and/or CO groups and/or --O13 CO groups and/or --CO--O groups and/or --CH.dbd.CH-- groups, one of the radicals R.sup.1 and R.sup.2 being also --A.sup.3 --R.sup.3,A.sup.1 is a 1,4-cyclohexylene group which is unsubstituted or substituted in the 1-position and/or 2-position and/or 3-position and/or 4-position by alkyl which has in each case 1-5 C atoms and is unsubstituted or substituted or fluorinated, and in which it is also possible for one or two non-adjacent CH.sub.2 groups to be replaced by one or two different groupings from the group --O--, --CO--, --CH.dbd.CH--, --S--, --SO-- or --SO.sub.2 --, or is substituted by F, Cl, Br, CN and/or CHO,A.sup.2 is a 1,4-bicyclo[2.2.2] octylene group,--A.sup.3 --R.sup.3 is --Cy--R.sup.3, --Ph--R.sup.3, --Cy--Ph--R.sup.3 or --Ph--Cy--R.sup.3,Cy is 1,4-cyclohexylene or one of the other groups recited for A.sup.1,Ph is 1,4-phenylene which is unsubstituted or substituted by or one two F atoms and/or CH.sub.3 groups andR.sup.3 is an alkyl group which has 1-12 C atoms and in which it is also possible for one or two non-adjacent CH.sub.2 groups to be replaced by O atoms and/or CO groups and/or O--CO groups and/or --CO--O groups and/or --CH.dbd.CH-- groupsare suitable for use as components of liquid-crystal phases for field effect and/or bistability effect displys.

    摘要翻译: 式I R1-A1-A2-R2 I的双环辛烷衍生物,其中R 1和R 2彼此独立地是具有1-12个C原子的烷基,并且其中一个或两个不相邻的CH 2基团也是可能的 被O原子和/或CO基团和/或-O13CO基团和/或-CO-O基团和/或-CH = CH-基团取代,基团R1和R2之一也是-A3-R3, A1是未取代的或在1位和/或2位和/或3位和/或4位上被烷基取代的1,4-亚环己基,其各自为1-5个C原子和 是未取代或取代或氟化的,并且其中一个或两个不相邻的CH 2基团也可以被-O - , - CO - , - CH = CH - , - S,-SO-或-SO 2 - ,或被F,Cl,Br,CN和/或CHO取代,A2是1,4-双环[2.2.2]亚辛基,-A3-R3是-Cy -R3,-Ph-R3,-Cy-Ph-R3或-Ph-Cy-R3,Cy为1,4-亚环己基或为A1所列举的其它基团之一, Ph是未被取代或被两个F原子和/或CH 3基团取代的1,4-亚苯基,R 3是具有1-12个C原子的烷基,并且其中也可以有一个或两个不相邻的 被O原子和/或CO基团和/或O-CO基团和/或-CO-O基团和/或-CH = CH-基团取代的CH 2基团适用于现场的液晶相的组分 效果和/或双稳性效应不好。