Patent number: 7419706
Abstract: 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 ?m, wherein R11, A11, Z11, A12, Z12, L11, L12, L13, L14, Z13, A13, Z14, A14, X11, a, b, c, d, R12, A1, Z1, A2, Z2, A3, L1, L2, X12, 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.
Type:
Grant
Filed:
August 3, 2004
Date of Patent:
September 2, 2008
Assignee:
Merck Patent Gesellschaft mit Beschrankter Haftung
Inventors:
Michael Heckmeier, Achim Goetz, Markus Czanta, John Patrick, Louise Diane Farrand, Cecile Schott, Elvira Montenegro, Peer Kirsch