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    • 21. 发明授权
    • Liquid-crystal display
    • 液晶显示器
    • US5725796A
    • 1998-03-10
    • US461737
    • 1995-06-05
    • Ulrich FinkenzellerHerbert PlachEike PoetschVolker Reiffenrath
    • Ulrich FinkenzellerHerbert PlachEike PoetschVolker Reiffenrath
    • C09K19/02C09K19/04C09K19/30C09K19/42G02F1/13G02F1/133G09F9/35C09K19/52
    • C09K19/0403C09K19/0208C09K19/3003C09K2019/0407C09K2019/0444
    • 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
    • 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
    • 30. 发明授权
    • Liquid-crystalline mixture of low viscosity
    • 低粘度的液晶混合物
    • US5271865A
    • 1993-12-21
    • US674367
    • 1991-04-10
    • Reinhard HittichHerbert PlachVolker Reiffenrath
    • Reinhard HittichHerbert PlachVolker Reiffenrath
    • C09K19/42C09K19/44C09K19/46C09K19/52C09K19/20C09K19/30G02F1/13
    • C09K19/42C09K19/44C09K19/46
    • The invention relates to a liquid-crystalline mixture containing one or more compounds of the general formula ##STR1## in which R.sup.1 is straight-chain alkyl having 2 to 12 carbon atoms in which, in addition, one CH.sub.2 group may be replaced by --O-- or --CH.dbd.CH--, the ring A is 1,4-phenylene or trans-1,4-cyclohexylene, and r is 0 or 1, and one or more highly dielectrically positive compounds selected from the group comprising the compounds of the general formulae II, III and IV in a weight ratio between the compounds of the formula I and the compounds of the formulae II, III and IV of from 1:10 to 10:1: ##STR2## in which R.sup.2 has one of the meanings indicated for R.sup.1, and X and Y are each, independently of one another, CH or N, ##STR3## in which R.sup.2 has one of the meanings indicated for R.sup.1, and X' and Y' are CH.sub.2 or O, ##STR4## in which R.sup.2 has one of the meanings indicated for R.sup.1, r is as defined above, the rings A.sup.1 and A.sup.2 have one of the meanings indicated for A, and L is H or F.
    • PCT No.PCT / EP91 / 00156 Sec。 371日期:1991年4月10日 102(e)1991年04月10日PCT 1991年1月28日PCT PCT。 出版物WO91 / 12294 日本1991年8月22日。本发明涉及含有一种或多种通式“I”的化合物的液晶混合物,其中R 1是具有2至12个碳原子的直链烷基,其中另外一个 CH 2基团可以被-O-或-CH = CH-取代,环A是1,4-亚苯基或反式-1,4-亚环己基,r是0或1,并且选择一个或多个高反应性正性化合物 来自包含通式II,III和IV的化合物的组,其中式I化合物与式II,III和IV的化合物的重量比为1:10至10:1: 其中R2具有对R1表示的含义之一,X和Y各自独立地为CH或N,其中R 2具有对R 1表示的含义之一,X'和Y 是CH2或O,其中R2具有对R1表示的含义之一,r如上所定义,环A1和A2具有对A表示的含义之一,L是 H或F.