Patent ID: 8361568

Claim:
A liquid-crystalline medium, comprising one or more compounds of formula IA-3 to IA-6 and at least one compound of formulae IB, IC and/or ID in which R 1B denotes an alkenyl radical having up to 6 C atoms which is unsubstituted, monosubstituted by CN or CF 3 or at least monosubstituted by halogen, in which optionally, one or more CH 2 groups are, each independently of one another, 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, R 2B , R 1C , R 1D and R 2D each, independently of one another, denote an alkyl or alkenyl radical having up to 6 C atoms which is unsubstituted, monosubstituted by CN or CF 3 or at least monosubstituted by halogen, in which optionally, one or more CH 2 groups are, each independently of one another, 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, each, independently of one another, denote Y 1 , Y 2 , Y 4 and Y 5 each, independently of one another, denote F, Cl, CF 3 , OCF 3 , OCH 2 F, OCHF 2 or CN, Y 3 denotes H or CH 3 , R 2C denotes H or F, R 3C denotes H, CH 3 , C 2 H 5 or n-C 3 H 7 , alkyl denotes a straight-chain alkyl radical having 1-6 C atoms, a denotes 1, b denotes 0, c denotes 1 or 2, and d denotes 0 or 1, wherein the amount of one or more compounds of formula IB is ≧20% by weight based on the total medium; and wherein at least one of the following three conditions I, II or III is met: condition I): that the liquid-crystalline medium comprises at least one compound of formulae IC and/or ID; condition II): that the liquid-crystalline medium comprises at least one compound of formula IA-3; or condition III): that the liquid-crystalline medium comprises at least one compound of formula IA-5.