Patent ID: 8877092

Claim:
A liquid-crystalline medium comprising a mixture of polar compounds, wherein said medium comprises: at least one compound of formula I, in which R 1 and R 1* each, independently of one another, denote an alkyl or alkoxy radical having 1 to 15 C atoms, where, in addition, one or more CH 2 groups in these radicals are each optionally replaced, independently of one another, 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, in addition, one or more H atoms are each optionally replaced by halogen, and ring A denotes a 1,4-cyclohexylene ring or 1,4-cyclohexenylene ring, in which, in addition, one or two CH 2 groups are each optionally replaced by —O— or — S—,and one or more compounds selected from the compounds of formulae IIA, IIB and IIC, in which R 2A , R 2B and R 2C each, independently of one another, denote H or an alkyl radical having up to 15 C atoms which is unsubstituted, monosubstituted by CN or CF 3 or at least monosubstituted by halogen, where, in addition, one or more CH 2 groups in these radicals are each optionally replaced by —O—, —S—, —C≡C—, —CF 2 O—, —OCF 2 —, —OC—O— or —O—CO— in such a way that O atoms are not linked directly to one another, L 1-4 each, independently of one another, denote F or Cl, Z 2 and Z 2′ each, independently of one another, denote a single bond, —CH 2 CH 2 —, —CH═CH—, —CF 2 O—, —OCF 2 —, —CH 2 O—, —OCH 2 —, —COO—, —OCO—, —C 2 F 4 —, —CF═CF—, or —CH═CHCH 2 O—, p denotes 1 or 2, q denotes 0 or 1, and v denotes 1 to 6.