| abstract |
The invention relates to the compounds of the formula I and to a liquid- crystalline medium based on a mixture of polar compounds which contains at least one compound of the formula I in which R 1 , L 1 , L 2 and L 3 and m have the meanings indicated in Claim 1 and to the use of the LC mixtures for an active-matrix display, in particular based on the VA, PSA and PS-VA effect. |