Stilbene derivatives, liquid-crystal mixtures and...

Details Stilbene derivatives, liquid-crystal mixtures and... Stilbene derivatives, liquid-crystal mixtures and...

Filed on

2007-12-10

Date issued

2010-06-08

Examiner

Wu, Shean C (Department: 1795)

Patent Class

Stock material or miscellaneous articles

SubClass

Liquid crystal optical display having layer of specified...

Other Related Categories

C252S299610, C252S299620, C252S299630, C252S299660, C570S128000, C570S129000, C570S130000, C570S131000, C570S144000

Type

Reexamination Certificate

Status

active

Patent number

07732022

Description

ABSTRACT:
Disclosed are fluorostilbene compounds of formula I,liquid-crystal media which comprise these compounds, the use of the media in electro-optical displays, in particular in VAN LCDs, and a process for the preparation of these compounds.

REFERENCES:
patent: 4997942 (1991-03-01), Osawa et al.
patent: 5085799 (1992-02-01), Shimizu et al.
patent: 5128472 (1992-07-01), Osawa et al.
patent: 03-004103 (1991-01-01), None
patent: 07-133241 (1995-05-01), None
CAPLUS 2001:811872).
J. Goodby et al., “Trans-1,2-Difluorostilbenes : Promising Materials for High Dielectric Biaxiality Ferroelectric Mixtures”, Mol. Cryst. and Liq. Cryst., vol. 364 (2001) pp. 889-898.

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