Patent ID: 6908645
Filing Date: 2005-06-21
Classification: C09K

Abstract:
1. A liquid-crystalline medium based on a mixture of polar compounds, which comprises one or more compounds of the formula I in which R  —CH═CH—, —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, L Z X is F, Cl, CN, OCN, NCS, SCN, SF u is 1 or 2, and v is 1 or 2, provided that: when R 1 is alkyl, u is 1, v is 1 and X is F, CN, an alkyl radical, halogenated alkyl radical or a halogenated alkoxy radical; the A ring is not phenyl or fluorinated phenyl.