摘要:
An electro-optical liquid crystal display with active-matrix addressing, in which the liquid-crystal layer has a homeotropic or tilted homeotropic alignment in the switched-off state and which contains a liquid-crystalline medium of negative dielectric anisotropy. The medium containsA) 30-70% by weight of two or more compounds of the formula I ##STR1## and B) 20-50% by weight of two or more compounds of the formula II ##STR2## in which R.sup.1, R.sup.2, ##STR3## and m are as defined in claim 1. The displays are particularly capable of operation based on the vertically-aligned cholesteric or nematic (VAC or VAN) effect.
摘要:
1,3-Dioxane compounds of the formula IR.sup.1 --(A.sup.1 --Z.sup.1).sub.m --W--(Z.sup.2 --A.sup.2).sub.n --R.sup.2(I)in whichW is ##STR1## and R.sup.1, R.sup.2, A.sup.1, A.sup.2, Z.sup.1, Z.sup.2, m, n, ##STR2## n.sub.1, n.sup.2, n.sub.3, n.sub.4, n.sub.5, n.sub.6, Z.sup.3 and Z.sup.4 are as defined herein,are suitable as components of liquid-crystalline media.
摘要:
Fluorinated biphenylcyclohexanes of the formula I ##STR1## in which R, X, Z, L.sup.1, L.sup.2, L.sup.3 and n are as defined herein, are suitable as components of liquid-crystalline media.
摘要:
The invention relates to liquid crystal compounds of formula (I), where X1, X2, X3, Z1, Z2, L1, L2, L3, L4, L5, L6, L7, L8, L9, L10, L11 and a have the meanings given in claim 1, and liquid crystal media containing at least one compound of formula (I) and electro-optical displays comprising such a liquid crystal medium
摘要:
AMLCDs containing a liquid-crystal medium which comprises a) at least one compound of the formula I and b) at least one compound of the formula II where the various parameters are as defined in the text, and to these liquid-crystal media and to their use in electro-optical displays.
摘要:
The invention relates to novel dioxane derivatives of the formula I R1—(A1—Z1)m—A2—C2F4—A3—(Z2—A4)n—R2 I in which R1, R2, A1, A2, A3, A4, Z1, Z2, m and n are as defined herein, to their use as components of liquid-crystalline media, and to liquid-crystal and electro-optical display elements which contain the liquid-crystalline media according to the invention.
摘要:
The invention relates to a liquid-crystalline medium based on a mixture of polar compounds of positive dielectric anisotropy, containing at least one compound of the general formula I in which R1 and R2 are each, independently of one another, an alkyl or alkenyl radical having 1 to 12 carbon atoms which is unsubstituted, monosubstituted by CN or CF3 or at least monosubstituted by halogen, where one or more CH2 groups in these radicals may also, in each case independently of one another, be replaced by —O—, —S—, —CO—, —CO—O—, —O—CO— or —O—CO—O— in such a way that O atoms are not linked directly to one another and u is 1 or 2.
摘要:
The invention relates to cyclohexane derivatives of the formula I in which n, m, p, R.sup.1, X.sup.1, X.sup.2, X.sup.3, Z.sup.1, Z.sup.2, Z.sup.3, A.sup.1, A.sup.2 and Y are as defined herein.
摘要:
The invention relates to a liquid-crystalline medium based on a mixture of polar compounds having positive dielectric anisotropy, characterized in that it comprises one or more compounds of the general formula I ##STR1## in which R is H, an alkyl or alkenyl radical having 1 to 15 carbon atoms which is unsubstituted, monosubstituted by CN or CF.sub.3 or at least monosubstituted by halogen, it also being possible for one or more CH.sub.2 groups in these radicals to be replaced, in each case independently of one another, by --O--, --S-- ##STR2## --CO--, --CO--O--, --O--CO-- or --O--CO--O--in such a way that O atoms are not linked directly to one another,Y is F, Cl, halogenated alkyl, alkenyl or alkoxy having 1 to 6 carbon atoms, andL.sup.1 is F.