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    • 27. 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
    • 28. 发明授权
    • Liquid crystal display
    • 液晶显示器
    • US5578241A
    • 1996-11-26
    • US63093
    • 1993-05-18
    • Herbert PlachBernhard RiegerVolker ReiffenrathEike Poetsch
    • Herbert PlachBernhard RiegerVolker ReiffenrathEike Poetsch
    • C09K19/30C09K19/52G02F1/13
    • C09K19/3001Y10T428/1027
    • The invention relates to a liquid crystal display element which contains an electrically switchable, dielectrically positive twisted nematic liquid crystal layer between two substrates which together with a frame form a cell, and two layers with alignment layers thereon applied to the substrates. The liquid crystal mixture is based on SFM compounds. One of the electrodes forming an active matrix of non-linear switching elements is integrated within each picture element while the other electrode is the counter electrode. The alignment layer is an organic polymer layer which may be essential uniformly aligned by rubbing. The alignment layer results in an essential homogenous surface alignment of the liquid crystal layer with a surface tilt angle. The liquid crystal material comprises at least 30 wt. % of one or more compounds according to formula I ##STR1## wherein R, Z.sup.1, Z.sup.2, A.sup.1, A.sup.2, X, Y and n are herein defined, and the alignment layer is based on at least partially fluorinated polyimides.
    • 本发明涉及一种液晶显示元件,该液晶显示元件在两个基板之间包含电可切换的,介于上面的正扭曲向列型液晶层,该液晶显示元件与框架一起形成单元,其上具有对准层的两层施加到基板上。 液晶混合物基于SFM化合物。 形成非线性开关元件的有源矩阵的电极之一被集成在每个像素内,而另一个电极是对电极。 取向层是有机聚合物层,其可以通过摩擦基本均匀排列。 取向层导致液晶层与表面倾斜角的基本均匀的表面对准。 该液晶材料包含至少30wt。 %的一种或多种根据式I的化合物其中R,Z 1,Z 2,A 1,A 2,X,Y和n在此被定义,并且取向层基于至少部分氟化的聚酰亚胺。
    • 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.