Benzochromene derivatives

Details Benzochromene derivatives Benzochromene derivatives

2006-12-05

2010-11-02

Wu, Shean C (Department: 1795)

Stock material or miscellaneous articles

Liquid crystal optical display having layer of specified...

C514S454000, C514S455000, C252S299620, C252S299630, C549S388000, C549S390000

Reexamination Certificate

active

07824745

ABSTRACT:
The present invention relates to benzochromene derivatives of the formula Iwhere the various parameters have the meaning indicated in the text, and to liquid-crystal media which comprise these compounds, and to the use of the media in electro-optical displays, in particular in VAN-LCDs, and to the use of the compounds and physiologically acceptable derivatives thereof as therapeutic active ingredients.

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