Stock material or miscellaneous articles – Liquid crystal optical display having layer of specified...
Reexamination Certificate
2005-08-16
2005-08-16
Wu, Shean C. (Department: 1756)
Stock material or miscellaneous articles
Liquid crystal optical display having layer of specified...
C252S299620, C252S299610, C252S299630, C252S299660
Reexamination Certificate
active
06929834
ABSTRACT:
The invention relates to a liquid-crystalline medium based on a mixture of polar compounds of negative dielectric anisotropy which comprises at least one compound of the formula Iin which R11and R12, ring A, Z, a, L1and L2are as defined in claim 1, and the use thereof for an active-matrix display based on the ECB effect.
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patent: 6171519 (2001-01-01), Nonaka et al.
patent: 6280653 (2001-08-01), Jones et al.
patent: 19500768 (1995-09-01), None
patent: 19524230 (1997-01-01), None
patent: WO 9704039 (1997-02-01), None
Bremer Matthias
Duebal Hans-Rolf
Hornung Barbara
Klasen-Memmer Melaine
Pauluth Detlef
Merck Patent GmbH
Millen White Zelano & Branigan P.C.
Wu Shean C.
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