Patent ID: 7842358

Claim:
A liquid-crystalline medium, comprising one or more dielectrically positive compounds of formula IA, one or more dielectrically positive compounds of formula IB, one or more dielectrically positive compounds of formula IC, and one or more dielectrically neutral compounds of formula V 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, independently of one another, denote independently of one another, denote Z 11 to Z 16 , independently of one another, denote —CH 2 CH 2 —, —CF 2 CF 2 —, —COO—, trans-CH═CH—, trans-CF═CF—, —C≡C—, —CH 2 O—, —CF 2 O— or a single bond, L 11 and L 12 , independently of one another, denote H, F or Cl, X 1 denotes H or F, Y 1 denotes CH 2 or O, R 51 and R 52 , 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, on each occurrence, independently of one another, denotes Z 51 and Z 52 , independently of one another and, if Z 51 occurs twice, also these independently of one another, denote —CH 2 CH 2 —, —COO—, trans-CH═CH—, trans-CF═CF—, —CH 5 O—, —CF 2 O— or a single bond, and r denotes 0, 1 or 2.