Patent ID: 8277907

Claim:
A liquid-crystalline medium based on a mixture of polar compounds having negative dielectric anisotropy (Δ∈), which has a value for the ratio γ 1 /Δn 2 in the range 6-45 Pa·s with a clearing point of >60° C. and a Δ∈ of ≦−2.3, and comprises at least one terphenyl compound of formulae T-1 to T-22 and at least one tolan compound of formula To-1 to To-2 in which R denotes H, an alkyl or alkenyl radical having up to 15 C atoms which is unsubstituted, monosubstituted by CN or CF 3 or at least monosubstituted by halogen, in which one or more CH 2 groups are optionally replaced by —O—, —S—, —C≡C—, —OCF 2 —, —CF 2 O—, —OC—O— or —O—CO— in such a way that O atoms are not linked directly to one another, m denotes 1 to 6, and alkyl denotes a straight-chain alkyl radical having 1-6 C atoms.