Patent ID: 7704567
Filing Date: 2010-04-27
Classification: C09K

Abstract:
1. A liquid-crystalline medium comprising a mixture of polar compounds of negative dielectric anisotropy, wherein at least one polar compound of negative dielectric anisotropy is a compound of the formula I in which R  —C≡C—, —OC—O— or —O—CO— in such a way that O atoms are not linked directly to one another, A Z m is 1 and n is 0, 1 or 2 and said liquid-crystalline medium additionally comprises one or more compounds of formulae IIA and/or IIB  in which R  —C≡C—, —CO—, —CO—O—, —O—CO— or —O—CO—O— in such a way that O atoms are not linked directly to one another, p is 1 or 2, and v is from 1 to 6.