Haloacetylene derivatives
    9.
    发明授权
    Haloacetylene derivatives 失效
    甲基乙烯衍生物

    公开(公告)号:US5188759A

    公开(公告)日:1993-02-23

    申请号:US648627

    申请日:1991-02-01

    摘要: The invention relates to a liquid crystalline medium having at least two components, where at least one component is a haloacetylene derivatives of the formula IR.sup.1 --A.sup.1 --Z.sup.1 --(A.sup.2 --Z.sup.2).sub.m --A.sup.3 --C.tbd.C--X IwhereinR.sup.1 is an alkyl or alkenyl radical having up to 15 carbon atoms which is unsubstituted or monosubstituted by CN, halogen or CF.sub.3, or such a radical wherein one or more CH.sub.2 groups is replaced, in each case independently of one another, by --S--, --O--, ##STR1## --CO--, --CO--O--, --O--CO-- or --O--CO--O-- in such a manner that sulfur and/or oxygen atoms are not linked directly to one another,A.sup.1, A.sup.2 and A.sup.3, in each case independently of one another, are(a) a trans-1,4-cyclohexylene radical or --S-- one or more non-adjacent CH.sub.2 groups is replaced by --O-- and/or --S--,(b) a 1,4-phenyllene radical N" in which one or two CH groups is replaced by N,(c) 1,3-cyclobutylene, 1,3-bicyclo(1,1,1)pentylene, 1,4-cyclohexenylene, 1,4-bicyclo(2,2,2)octylene, naphthalene-2,6-diyl, decahydronaphthalene-2,6-diyl and 1,2,3,4-tetrahydronaphthalene-2,6-diyl,Z.sup.1 and Z.sup.2 independently of one another, are --CH.sub.2 CH.sub.2 --, --C.dbd.C--, --CH.sub.2 O--, --OCH.sub.2 --, --CO--O--, --O--CO--, --CH.dbd.N--, --N.dbd.CH--, --CH.sub.2 S--, --SCH.sub.2 --, a single bond or an alkylene group having 3 to 6 carbon atoms in which one CH.sub.2 group may be replaced by --O--, --CO--O--, --O--CO--, --CH halogen-- or --CHCN--,X is F, Cl, --NCS, Br, --OCF.sub.3 or --SCF.sub.3, andm is 0, 1 or 2.

    摘要翻译: 本发明涉及具有至少两种组分的液晶介质,其中至少一种组分是式I的卤代乙炔衍生物R1-A1-Z1-(A2-Z2)m-A3-C 3BOND CX I其中R1是 具有至多15个碳原子的烷基或链烯基,其被未取代的或被CN,卤素或CF 3单取代,或者其中一个或多个CH 2基团在每种情况下彼此独立地被-S-,-O - , - , - CO - , - CO-O-,-O-CO-或-O-CO-O-,使得硫和/或氧原子彼此不直接连接,A1,A2 和A3各自独立地为(a)反式-1,4-亚环己基或-S-一个或多个不相邻的CH 2基团被-O-和/或-S-取代,( b)其中一个或两个CH基团被N,(c)1,3-环丁烯,1,3-二环(1,1,1)亚戊基,1,4 - 环己烯,1,4-二环(2,2,2)亚辛基,萘-2,6-二基,十氢萘-2,6-二基和1,2,3,4 四氢萘-2,6-二基,Z 1和Z 2彼此独立地是-CH 2 CH 2 - , - C = C - , - CH 2 O - , - OCH 2 - , - CO-O-,-O-CO-, - CH = N,-N = CH-,-CH 2 S-,-SCH 2 - ,单键或碳原子数3〜6的亚烷基,其中一个CH 2基可以被-O - , - CO-O-, -O-CO-,-CH-或-CHCN-,X是F,Cl,-NCS,Br,-OCF3或-SCF3,m是0,1或2。

    Liquid-crystal display
    10.
    发明授权
    Liquid-crystal display 失效
    液晶显示器

    公开(公告)号:US5725796A

    公开(公告)日:1998-03-10

    申请号:US461737

    申请日:1995-06-05

    摘要: The invention relates to a liquid-crystal display based on a twisted nematic cell and having two substrates provided with electrode layers and alignment layers thereon and, with a frame, forming a cell, a nematic liquid-crystal mixture having positive dielectric anisotropy present in the cell, and a twist angle of the liquid-crystal layer in the cell with a value of between 0.degree. and 600.degree. from alignment layer to alignment layer,whose liquid-crystal mixture is based on medium-polarity compounds of the SFM type which are selected so that the liquid-crystal mixture has a viscosity at 20.degree. C. of less than 30 mm.sup.2 s.sup.-1 and has a value of K/.DELTA..di-elect cons..ltoreq.1.5 for the quotient of the Frank constant K ##EQU1## and the dielectric anisotropy .DELTA..di-elect cons. .DELTA..di-elect cons.=.di-elect cons..vertline.-.di-elect cons..sub..perp.when used in a TN cell (.nu.=.pi./2, d/p

    摘要翻译: 本发明涉及一种基于扭转向列单元的液晶显示器,具有在其上设置有电极层和取向层的两个基板,并且具有形成单元的框架,存在于该介质各向异性中的正的介电各向异性的向列型液晶混合物 电池中的液晶层和从配向层到取向层的值在0〜600度之间的电池中的液晶层的扭转角,其液晶混合物基于SFM型的中极性化合物 选择为使得液晶混合物在20℃下的粘度小于30mm 2 s -1,并且具有值+ E,ovs K + EE / DELTA +531 <= 1.5,对于Frank的商 常数+ E,ovs K + EE 和介电常数各向异性DELTA +531 DELTA +531 = + 531 | - + 531当在TN单元中使用ORTHOGONAL(nu = pi / 2,d / p << 1)+ E,ovs K + EE / DELTA +531