| abstract |
The invention relates to liquid-crystalline mixtures comprising, particularly for the purpose of increasing the pretilt at the polyimide surface, at least one compound of the formula (I) in which X, L 1 , L 2 , L 3 , L 4 and Alkenyl have the definitions indicated in claim 1, and also to liquid-crystalline media comprising one or more compounds of the formula (I) in electrooptical liquid-crystal displays and in LC lenses. |