Fluorinated aromatic compounds and the use of the same in liquid crystal mixtures

摘要

The invention relates to fluorinated aromatics of the formula (I) where X is CH₂, C-O, CF₂, O or S, Y is H or F, with the proviso that Y has to be F when X is CH₂, and where the other parameters are as defined in claim 1, and also to their use in liquid-crystal mixtures, and also to liquid-crystal mixtures comprising these compounds and to liquid-crystal displays comprising these mixtures.