Patent ID: 6962733

Claim:
A liquid-crystalline medium comprising a mixture of polar compounds of positive dielectric anisotropy, wherein the medium comprises: 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 one or more CH 2 groups in these radicals are optionally, independently of one another, 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 1 to 6 carbon atoms, L 1 and L 2 are each, independently of one another, H or F; and one or more compounds of the following formulae: in which R 0 is n-alkyl, oxaalkyl, fluoroalkyl or alkenyl, each having 1 to 9 carbon atoms.