Patent ID: 8012370

Claim:
A liquid-crystal medium, comprising: a first dielectrically positive component, component A, comprising one or more dielectrically positive compounds of the formula I in which R 1 denotes alkyl, alkoxy, fluorinated alkyl or fluorinated alkoxy having 1 to 7 C atoms, alkenyl, alkenyloxy, alkoxyalkyl or fluorinated alkenyl, alkenyloxy or alkoxyalkyl having 2 to 7 C atoms, X 1 denotes —CN, halogen, halogenated alkyl or halogenated alkoxy having 1 to 3 C atoms or halogenated alkenyl or halogenated alkenyloxy having 2 or 3 C atoms, Y 11 and Y 12 , independently of one another, denote H or F, and L 11 to L 16 , independently of one another, denote H or F, and optionally a further dielectrically positive component, component B, comprising one or more dielectrically positive compounds of the formulae II and III: in which R 2 and R 3 , independently of one another, denote alkyl, alkoxy, fluorinated alkyl or fluorinated alkoxy having 1 to 7 C atoms, alkenyl, alkenyloxy, alkoxyalkyl or fluorinated alkenyl having 2 to 7 C atoms, independently of one another, denote L 21 , L 22 , L 31 and L 32 , independently of one another, denote H or F, X 2 and X 3 , independently of one another, denote halogen, halogenated alkyl or alkoxy having 1 to 3 C atoms or halogenated alkenyl or alkenyloxy having 2 or 3 C atoms, Z 3 denotes —CH 2 CH 2 —, —CF 2 CF 2 —,—COO—, trans-CH═CH—, trans-CF═CF—, —CH 2 O— or a single bond, and l, m, n and o, independently of one another, denote 0 or 1, and optionally a dielectrically neutral component, component C, comprising one or more dielectrically neutral compounds of the formula IV in which R 41 and R 42 , independently of one another, have the meaning indicated above for R 2 under formula II, independently of one another and, if occurs twice, also these independently of one another, denote Z 41 and Z 42 , independently of one another and, if Z 41 occurs twice, also these independently of one another, denote —CH 2 CH 2 —, —COO—, trans-CH═CH—, trans-CF═CF—, —CH 2 O—, —CF 2 O—, —C≡C— or a single bond, and p denotes 0, 1 or 2.