Patent ID: 6969542

Claim:
A nematic liquid-crystal medium, which comprises a) a dielectrically negative, liquid-crystalline component A which comprises one or more dielectrically negative compounds of one of the formulae I-1, I-3 and I-4: in which R 11 is alkyl having from 1 to 7 carbon atoms, alkoxy having from 1 to 7 carbon atoms or alkenyloxy having from 2 to 7 carbon atoms, R 12 is alkyl or alkoxy having from 1 to 7 carbon atoms or alkenyl, alkenyloxy or alkoxyalkyl having from 2 to 7 carbon atoms, and Z 12 is OCF 2 or CF 2 O, and b) a dielectrically negative, liquid-crystalline component, B, different from component A, and c) optionally, a dielectrically neutral, liquid-crystalline component C, and d) optionally, a dielectrically positive, liquid-crystalline component D.