| abstract |
The invention relates to compounds of the formula I, and a liquid-crystalline medium, preferably having a nematic phase and a negative dielectric anisotropy, which a) one or more compounds of the formula I. and b) one or more compounds of the formula II as specified in claim 1, and / or c) one or more compounds selected from the group of the compounds of the formulas III-1 to III-4 and B, as specified in claim 1, its use in an electro-optical display, especially in an active matrix display based on the VA -, ECB, PALC, FFS or IPS effect, such displays containing such a liquid-crystalline medium, and the use of the compounds of formula I, for stabilizing a liquid-crystalline medium, that one or more compounds of formula II and a or more compounds selected from the group of compounds of the formulas III-1 to III-4 and B. |