abstract |
The invention relates to a liquid-crystalline medium based on a mixture of polar compounds of positive dielectric anisotropy, characterised in that it comprises one or more compounds of the general formula I n n n in which R 1 , n n n L 1 , L 2 , L 3 , L 4 , L 5 , L 6 , Z 1 , Z 2 , X, v and u are as defined in claim 1. |