Benzochromene derivatives for use in liquid crystal media...

Details Benzochromene derivatives for use in liquid crystal media... Benzochromene derivatives for use in liquid crystal media...

2011-08-16

2011-08-16

Wu, Shean C (Department: 1722)

Stock material or miscellaneous articles

Liquid crystal optical display having layer of specified...

C252S299610, C252S299620, C514S437000, C514S454000, C514S455000, C549S390000, C549S391000, C549S393000

Reexamination Certificate

active

07998541

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 TN, OCB, LCOS and/or IPS-LCDs, and to the use of the compounds and physiologically acceptable derivatives thereof as therapeutic active ingredients.

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