| abstract |
The invention relates to a liquid crystalline medium based on a mixture of polar compounds of positive dielectric anisotropy, consisting of one or more compounds of general formula (I) in which R is H, an unsubstituted, a simply by CN or CF3 substituted or at least simply an halogen-substituted alkyl or alkenyl radical with 1 to 15 C atoms, where one or more CH2 groups in said radicals may be mutually independently substituted by -O-, -S-, (a), -CO-, -CO-O-, -O-CO- or -O-CO-O- in such a way that O atoms are not directly linked together; Y is F, Cl, halogenated alkyl, alkenyl or alkoxy with 1 to 6 C atoms; and L<1> is H or F. |