Patent ID: 7682671

Claim:
A liquid crystal medium, comprising at least two liquid crystalline components, wherein at least one component is a first dielectrically positive component, component A, comprising one or more dielectrically positive compounds of formula I wherein R 1 is alkyl, alkoxy, fluorinated alkyl or fluorinated alkoxy with 1 to 7 C-atoms, alkenyl, alkenyloxy, alkoxyalkyl or fluorinated alkenyl with 2 to 7 C-atoms, and preferably are alkyl or alkenyl, X 1 is halogen, halogenated alkyl or alkoxy with 1 to 3 C-atoms or halogenated alkenyl or alkenyloxy with 2 or 3 C-atoms, and optionally, a second dielectrically positive component B, a dielectrically neutral component, component C, comprising one or more dielectrically neutral compounds of formula IV wherein R 41 and R 42 , independently of each other, are alkyl, alkoxy, fluorinated alkyl or fluorinated alkoxy with 1 to 7 C-atoms, alkenyl, alkenyloxy, alkoxyalkyl or fluorinated alkenyl with 2 to 7 C-atoms independently of each other, and in case is present twice, also these, independently of each other, are Z 41 and Z 42 are, independently of each other, and in case Z 41 is present twice, also these independently of each other, —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 is 0 or 1.