Abstract: The invention relates to a liquid-crystal matrix display having integrated nonlinear components and containing a liquid-crystal mixture having particularly high specific resistance.

Abstract: The invention relates to a nematic liquid crystal medium of positive dielectric anisotropy containing one or more achiral liquid crystal compounds and a doping component, the doping component contains one or more doping substance which are chosen such that the medium, when used in a test cell suitable for determination of .DELTA.(d/p)(T), has a low temperature dependence of the d/p window d[.DELTA.(d/p)]/dT.

Abstract: The invention relates to novel tetracyclic benzene derivatives of the formula I ##STR1## in which n is 1 to 7, A is trans-1,4-cyclohexylene, 1,4-phenylene, 3-fluoro-1,4-phenylene or 3,5-difluoro-1,4-phenylene, X is F, Cl, CF.sub.3, --OCF.sub.3 or --OCHF.sub.2, and L, Y and Z are each, independently of one another, H or F.

Abstract: The invention relates to a matrix liquid crystal display containing integrated non-linear elements and a liquid crystal mixture which has a particularly high resistivity.

Abstract: Biphenylylethanes of the formula I,R.sup.1 --CH.sub.2 --X--(CH.sub.2 CH.sub.2).sub.m --Ph--Ph--CH.sub.2 CH.sub.2 --Ph--Y--CH.sub.2 --R.sup.2 Iin whichR.sup.1 and R.sup.2 are each, independently of one another, alkyl, alkenyl or oxaalkyl having up to 12 C atoms, and one of the radicals R.sup.1 and R.sup.2 is alternatively H,m is 0 or 1,X and Y are each, independently of one another, O, S, CO--O, O--CO, O--CO--O or a single bond, the radical X is alternatively 1,4-phenylene or trans-1,4-cyclohexylene, and the radical Y is alternatively trans-1,4-cyclohexylene, andis 1,4-phenylene, and one or two of the radicals Ph is alternatively 2- or 3-fluoro-1,4-phenylene,with the proviso that, in the case (a) where X=1,4-phenylene and m=1, one or two of the radicals Ph are 2- or 3-fluoro-1,4-phenylene, and (b) in the case where X=trans-1,4-cyclohexylene, m=0 and one or two of the radicals Ph are 2- or 3-fluoro-1,4-phenylene, are suitable as components of liquid-crystalline phases.

Abstract: Difluoromethylene compounds of the formula IR.sup.1 --(A.sup.1 --Z.sup.1).sub.m --A.sup.2 --Q--CF.sub.2 --(A.sup.3 --Z.sup.2).sub.n --A.sup.4 --R.sup.2 Iin which R.sup.1, R.sup.2, A.sup.1, A.sup.2, A.sup.3, A.sup.4, Z.sup.1, Z.sup.2, m and n are as defined herein and Q is --CO--, --O-- or --S--, can be used as components of liquid-crystalline media for liquid-crystal and electrooptical display elements.