| abstract |
A medium for an MLC, TN or STN display having a very low threshold voltage and simultaneously a high value for voltage holding ratio (VHR). A liquid crystal medium based on a mixture of polar compounds having a positive dielectric anisotropy, which comprises formula I (Wherein R1 is an alkyl group, X1 is a -CN group, etc., L1 to L2 are H or F), and one or more compounds, and one or more compounds A liquid crystal medium comprising a tetracyclic compound containing a cyclohexane ring and a benzene ring. [Selection figure] None |