Patent ID: 7763329

Claim:
A liquid-crystalline medium, comprising: a compound of formula I in which R 0 denotes a halogenated or unsubstituted alkyl or alkoxy radical having 1 to 15 C atoms, in which one or more CH 2 groups are optionally, 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 1-7 each, independently of one another, denote H or F; a compound of formula IV, V, VI, VII or VIII in which R 0 denotes a halogenated or unsubstituted alkyl or alkoxy radical having 1 to 15 C atoms, in which one or more CH 2 groups are optionally, 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, Y 1-4 each, independently of one another, denote H or F, Z 0 denotes —C 2 H 4 —, —(CH 2 ) 4 —, —CH═CH—, —CF═CF—, —C 2 F 4 —, —CH 2 CF 2 —, —CF 2 CH 2 —, —CH 2 O—, —OCH 2 —, —COO— or —OCF 2 —, in formulae V and VI also a single bond, in formulae V and VIII also —CF 2 O—, r denotes 0 or 1, and s denotes 0 or 1, and a compound of formula XVII in which R 1 and R 2 each, independently of one another, denote n-alkyl, alkoxy, oxaalkyl, fluoroalkyl or alkenyl, each having up to 9 C atoms, and L denotes H or F.