Liquid-crystalline medium

Details Liquid-crystalline medium Liquid-crystalline medium

2005-05-10

2005-05-10

Wu, Shean C. (Department: 1756)

Stock material or miscellaneous articles

Liquid crystal optical display having layer of specified...

C252S299610, C252S299630, C252S299660, C252S299670

Reexamination Certificate

active

06890607

ABSTRACT:
A liquid-crystalline medium based on a mixture of polar compounds of positive dielectric anisotropy, which contains one or more compounds of the formula Iin whichR1is a halogenated or unsubstituted alkyl or alkoxy radical having from 1 to 15 carbon atoms, where one or more CH2groups in these radicals are optionally, independently of one another, replaced by —C≡C—, —CH═CH—, —O—, —CO—O— or —O—CO— in such a way that O atoms are not linked directly to one another, X is SF5, and L1and L2are each, independently of one another, H or F. The media are useful in electro-optical liquid crystal displays.

REFERENCES:
patent: 6007740 (1999-12-01), Andou et al.
patent: 6187223 (2001-02-01), Andou et al.
patent: 6827990 (2004-12-01), Heckmeier et al.

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