Patent ID: 7419705

Claim:
Liquid-crystalline medium based on a mixture of polar compounds, comprising one or more compounds of the formula I in which R 1 is a halogenated or unsubstituted alkyl or alkoxy radical having from 1 to 15 carbon atoms, where, in addition, one or more CH 2 groups in these radicals may each, independently of one another, be replaced by —C≡C—, —CH═CH—, —O—, —CO—O— or —O—CO— in such a way that O atoms are not linked directly to one another, X is F, Cl, CN, a halogenated alkyl radical, a halogenated alkenyl radical, a halogenated alkoxy radical or a halogenated alkenyloxy radical having up to 6 carbon atoms, and L 1 and L 2 are each, independently of one another, H or F. said medium further comprising one or more compounds of the formulae Q-10 to Q-15 in which R 0 is n-alkyl, oxaalkyl, alkoxy, alkenyloxy, fluoroalkyl or alkenyl, each having up to 9 carbon atoms.