LIQUID CRYSTALLINE MEDIUM

摘要

The present invention relates to a liquid crystalline mixture comprising: a) 1-25 % by weight of at least one compound of the formula (I); b) 5-80 % by weight of at least one compound of the formula (II); c) and optionally 1-20 % by weight of at least one chiral compound with a HTP of >= 20 µm, wherein R<11>, A<11>, Z<11>, A<12>, Z<12>, L<11>, L<12>, L<13>, L<14>, Z<13>, A<13>, Z<14>, A<14>, X<11>, a, b, c, d, R<12>, A<1>, Z<1>, A<2>, Z<2>, A<3>, L<1>, L<2>, X<12>, m and n have the meanings given in claim (1) and their use in TFT, TN, IPS applications and expecially for devices utilizing electro-optical effects in an optically isotropic state.