Patent ID: 8454858

Claim:
A liquid crystalline medium containing at least one compound of formula I, at least one compound of formula II, and at least one compound of formula Z-15 wherein R 1 to R 4 and R 28 are each independently alkyl or alkoxy with 1 to 8 C atoms, wherein one or more CH 2 -groups are optionally replaced by —CH═CH—, —CF 2 O or —O— in a way that —O— atoms are not linked directly to one another, X 1 and X 2 are each independently F, Cl or CF 3 , Z 1 and Z 2 are each independently a single bond, —CH 2 CH 2 —, —CH 2 O—, —OCH 2 —, —CF 2 O—, —OCF 2 —, —COO— m is 0 or 1, and n is 1 to 6.