Stock material or miscellaneous articles – Liquid crystal optical display having layer of specified...
Reexamination Certificate
2011-04-12
2011-04-12
Wu, Shean C (Department: 1722)
Stock material or miscellaneous articles
Liquid crystal optical display having layer of specified...
C252S299610, C252S299630, C252S299660, C252S299670
Reexamination Certificate
active
07923079
ABSTRACT:
The present invention relates to a liquid-crystalline medium comprising 1,2-difluoroethene compounds of the general formula I, in which R1, ring A, Z1, Z2, m, X and L1-6are as defined in Claim1. The invention also relates to the use of the medium for electro-optical purposes and to displays containing this medium. Novel 1,2-difluoroethene compounds having 3 or more rings are disclosed.
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Czanta Markus
Hirschmann Harald
Reiffenrath Volker
Wittek Michael
Merck Patent GmbH
Millen White Zelano & Branigan P.C.
Wu Shean C
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