Liquid-crystalline medium

Details Liquid-crystalline medium Liquid-crystalline medium

2005-06-07

2005-06-07

Wu, Shean C. (Department: 1756)

Stock material or miscellaneous articles

Liquid crystal optical display having layer of specified...

C252S299610, C252S299630, C252S299660, C252S299670, C549S356000, C549S414000, C549S416000, C549S417000, C549S426000, C549S427000, C549S428000, C349S186000

Reexamination Certificate

active

06902777

ABSTRACT:
A liquid-crystalline mediums which contain one or more compounds of the formula Aand at least one compound of the formula Bwherein compounds of formula A contain at least one ring selected fromand in which Ra, Rb, ring A and ring B, Y, Z1, Z2, a, L1, L2, L3, L4, L5, L6, L7, L8and L9are as defined herein, are suitable for use in twisted nematic (TN) and supertwisted nematic (STN) liquid-crystal displays. Such displays have very short response times and good steepnesses and angle dependencies.

REFERENCES:
patent: 6329027 (2001-12-01), Kondo et al.
patent: 6558758 (2003-05-01), Yanai et al.

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