Patent ID: 7670655

Claim:
A liquid-crystalline medium, comprising one or more compounds of formula I in which R 0 denotes a halogenated or unsubstituted alkyl or alkoxy radical having 1 to 15 C atoms, in which optionally one or more CH 2 groups are, independently of one another, replaced by —C≡C—, —CF 2 O—, —CH═CH—, —O—, —CO—O— or —O—CO— in such a way that O atoms are not linked directly to one another, X 0 denotes F, Cl, CN, SF 5 , SCN, NCS, a halogenated alkyl radical, a halogenated alkenyl radical, a halogenated alkoxy radical or a halogenated alkenyloxy radical having up to 6 C atoms, and Y 1 and Y 2 each, independently of one another, denote H or F; and one or more compounds of formula VIa, VIb, VIc or VId in which R 0 and X 0 have the meanings indicated for formula I.