| 摘要 |
The invention relates to a liquid-crystalline medium based on a mixture of polar compounds of positive dielectric anisotropy, comprising one or more compounds of the general formula Iand simultaneously one or more compounds of the general formula IIin which R is H or an alkyl or alkoxy radical having 1 to 15 carbon atoms, Y is F, OCF3 or OCHF2, and R', independent of the radical selected in the formula I, is as defined for R. |
