Patent ID: 8404150

Claim:
Liquid-crystal medium, characterised in that it comprises 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 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, independently of one another and, if the rings A 11 and/or A 12 are present more than once, also these independently of one another, denote Z 11 to Z 13 , independently of one another and, if Z 11 and/or Z 13 are present more than once, also these independently of one another, denote —CH 2 CH 2 —, —CF 2 CF 2 —, —COO—, trans--CH═CH—, trans-CF═CF—, —CF 2 O—, —CH 2 O— or a single bond, L 11 to L 14 , independently of one another, denote H or F, and j and k, independently of one another, denote 0, 1 or 2, but where (j+k) denotes 0, 1 or 2.