| abstract |
[PROBLEMS] To provide a liquid crystal medium having a large specific resistance and a low threshold voltage, particularly for an MLC, TN or STN display. A liquid crystal medium based on a polar compound mixture having a positive dielectric anisotropy contains a compound of the general formula I, a compound of the general formula IIA, and / or a compound of the general formula IIB. (R is H, an alkyl, alkoxy, alkenyl or alkenyloxy group up to C15, R ', R "and R""are a C1-10 alkyl or alkoxy group or C2 10 to 10 alkenyl groups, Y is FC1 or a C1-5 halogenated alkyl group, and one CH 2 group in the group is —O— or —CH ＝ CH L may be H or F) |