Liquid crystal composition comprising liquid crystal...

Stock material or miscellaneous articles – Liquid crystal optical display having layer of specified... – Alignment layer of specified composition

Reexamination Certificate

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C428S001100, C428S001200, C252S299100, C252S299400

Reexamination Certificate

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06875483

ABSTRACT:
A liquid crystal composition comprises liquid crystal molecules and an alignment promoter. The alignment promoter is represented by the formula (I):in-line-formulae description="In-line Formulae" end="lead"?(Hb-L1-)nBl  (I).in-line-formulae description="In-line Formulae" end="tail"?In the formula (I), Hb is an aliphatic group having 4 to 40 carbon atoms, an aromatic group having 6 to 40 carbon atoms or an aliphatic substituted oligosiloxanoxy group having 1 to 40 carbon atoms. L1is a single bond or a divalent linking group, and n is an integer of 2 to 12. Bl is an n-valent group comprising at least two rings.

REFERENCES:
patent: 6245398 (2001-06-01), Matsuoka et al.
patent: 6338808 (2002-01-01), Kawata et al.
patent: 6485798 (2002-11-01), Aminaka et al.
patent: 0 864 885 (1998-09-01), None
patent: 0 911 656 (1999-04-01), None
patent: 0 928 984 (1999-07-01), None
patent: 1 455 442 (1976-11-01), None
patent: 2000-345164 (2000-12-01), None
patent: WO 0004110 (2000-01-01), None
EPO Search Report, dated Dec. 10, 2002 in EP Application No. 01115725.2-2103.

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