Liquid-crystalline medium

A liquid-crystalline medium based on a mixture of polar compounds having negative dielectric anisotropy (Δ∈), which has a value for the ratio γ1/Δn2 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 CF3 or at least monosubstituted by halogen, in which one or more CH2 groups are optionally replaced by —O—, —S—,
• —C≡C—, —OCF2—, —CF2O—, —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.