Patent ID: 8486298

Claim:
A liquid-crystalline medium having a positive dielectric anisotropy, comprising one or more compounds of formula I, and one or more compounds of formula III, and/or one or more of the compounds of formula XIIa, XIIb and/or XIIc in which R 0 denotes an 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, and in which one or more H atoms may be replaced by halogen atoms, and X 0 denotes F, Cl, CN, SF 5 , SCN, NCS, a halogenated alkyl radical, a halogenated alkenyl radical, or a halogenated alkoxy radical having up to 6 C atoms, in which R 3 denotes alkenyl having 2 to 9 C atoms, and R 4 denotes an 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, and in which one or more H atoms may be replaced by halogen atoms, in which alkyl and alkyl* each, independently of one another, denote a straight-chain alkyl radical having 1 to 6 C atoms, and alkenyl and alkenyl* each, independently of one another, denote a straight-chain alkenyl radical having 2 to 6 C atoms.