| abstract |
The invention relates to liquid-crystalline compounds of the formula I n n n n n n n n n n in whichn nR 1 , R 2 , A 1 , A 2 , A 3 , A 4 , Z 1 , Z 2 , Z 3 , V, a, b and c have the meanings indicated in Claim 1 , and to liquid-crystalline media comprising at least one compound of the formula I, and to electro-optical displays containing a liquid-crystalline medium of this type. |