Cyclopenta[a]naphthaline derivatives

Details Cyclopenta[a]naphthaline derivatives Cyclopenta[a]naphthaline derivatives

2004-08-02

2009-08-18

Wu, Shean C (Department: 1795)

Stock material or miscellaneous articles

Liquid crystal optical display having layer of specified...

C252S299620, C252S299630, C568S633000, C568S634000, C570S183000, C570S187000

Reexamination Certificate

active

07575785

ABSTRACT:
The present invention relates to cyclopenta[a]naphthalene derivatives of the general formulae I to Vin which B, Z, A, n, R, X1, X1a, X1b, X2, X3, E1and E2are as defined in the claims, to the use thereof in liquid-crystalline media, to liquid-crystalline media comprising at least one of these cyclopenta[a]naphthalene derivatives, and to electro-optical display elements containing these liquid-crystalline media.

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