Discotic nematic material, composition, retardation plate,...

Details Discotic nematic material, composition, retardation plate,... Discotic nematic material, composition, retardation plate,...

2011-06-28

2011-06-28

Wu, Shean C (Department: 1722)

Stock material or miscellaneous articles

Liquid crystal optical display having layer of specified...

C428S001310, C252S299610, C548S128000, C548S131000, C548S136000, C548S143000, C349S117000

Reexamination Certificate

active

07968157

ABSTRACT:
A discotic nematic material comprising a compound of R1—H1—Ar—H2—R wherein Ar represents a substituted or unsubstituted aromatic hydrocarbon ring; H1and H2represent an aromatic hetero ring; and R1and R2represent a substituent having from 1 to 30 carbon atoms. The discotic nematic material contains a discotic liquid-crystal compound having a smaller number of side branches and capable of expressing an NDphase.

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PCT/ISA/237.
Notification Concerning Transmittal of International Preliminary Report on Patentability (Form PCT/IB/326), International Preliminary Report on Patentability (Form PCT/IB/373), Written Opinion of the International Search Authority (Form PCT/ISA/237) mailed in corresponding International Patent Application No. PCT/JP2007/052445, Aug. 12, 2008, The International Bureau of WIPO, Geneva, CH.

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