Patent ID: 6902777

Claim:
A liquid-crystalline medium comprising one or more compounds of formula A and at least one compound of formula B in which R a and R b are each, independently of one another, H or an alkyl radical having from 1 to 12 carbon atoms which is unsubstituted, mono substituted by CN or CF 3 or at least monosubstituted by halogen, and in which one or more CH 2 groups are each, independently of one another, optionally replaced by —O—, —S—, —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, are each, independently of one another, and at least one ring is Z 1 and Z 2 are each, independently of one another, —CH 2 CH 2 —, —(CH 2 ) 4 —, —CH 2 O—, —OCH 2 —, —CF 2 O—, —OCF 2 —, —C≡C—, —CF═CF—, —CH═CH—, —COO—, —CH 2 —, —(CH 2 ) 3 — or a single bond, a is 0 is 1, L 1 to L 9 to are each, independently of one another, H or F, and Y is F, Cl, SF 5 , NCS, SCN, CN, OCN, or a monohalogenated or polyhalogenated alkyl, alkoxy, alkenyl or alkenyloxy radical, in each case having up to 5 carbon atoms.