abstract |
(57) Abstract: To provide a liquid crystal medium for MLC, TN or STN displays, which preferably has a very high resistivity and a low threshold voltage. A liquid crystal medium based on a mixture of polar compounds having a positive dielectric anisotropy, having the formula I Wherein R is H, a substituted or unsubstituted alkyl or alkenyl group having up to 18 carbon atoms, and ring A is And X is CN or Q-Y (where Y is H, F or C). 1, Q is a linear divalent bond or a single bond having a carbon atom), m is 0 or 1, and n is 0, 1 or 2], and one or more fluorophenylcyclohexene derivatives are contained. Is characterized by. |