Liquid crystal cells – elements and systems – Particular structure – Having significant detail of cell structure only
Reexamination Certificate
2005-04-12
2005-04-12
Frech, Karl D. (Department: 2876)
Liquid crystal cells, elements and systems
Particular structure
Having significant detail of cell structure only
C349S110000, C349S175000, C430S020000
Reexamination Certificate
active
06879362
ABSTRACT:
The present invention provides a cholesteric liquid crystal color filter including partition walls that are formed at pixel boundaries, produced by: forming a liquid crystal layer comprising a cholesteric liquid crystal composition including at least a liquid crystal compound, a photoreactive chiral agent and a polymerization initiator; and irradiating the liquid crystal layer with UV light having wavelengths to which the polymerization initiator is photosensitive through a photomask to form the partition walls at areas corresponding to the pixel boundaries while the liquid crystal layer is in an isotropic liquid state or in a cholesteric state not exhibiting selective reflection of light in the visible range. The invention also provides a process for producing a cholesteric liquid crystal color filter including openings that are formed at positions corresponding to at least contact holes and/or electrode lead-out portions.
REFERENCES:
patent: 4061417 (1977-12-01), Katagiri
patent: 5096520 (1992-03-01), Faris
patent: 5668614 (1997-09-01), Chien et al.
patent: 5771084 (1998-06-01), Fujimori et al.
patent: 6549261 (2003-04-01), Okada et al.
patent: 6573961 (2003-06-01), Jiang et al.
patent: 51-56658 (1976-05-01), None
patent: 59-83112 (1984-05-01), None
patent: 59-83113 (1984-05-01), None
patent: 8-234196 (1996-09-01), None
patent: 8-304626 (1996-11-01), None
patent: 9-61814 (1997-03-01), None
patent: 9-304613 (1997-11-01), None
patent: 10-260387 (1998-09-01), None
patent: 10-282324 (1998-10-01), None
patent: 10-316755 (1998-12-01), None
patent: WO 9820090 (1998-05-01), None
patent: WO 0034808 (2000-06-01), None
R.A.M. Hikmet et al. “Electrically Switchable Mirrors and Optical Components Made from Liquid-Crystal Gels” Nature, vol. 392 Apr. 2, 1998 p. 476-479.
Sandi Campbell et al. “Photochemical Modification of a Side Chain Copolysiloxane with a Cholesteric Phase” Chem. Matter., vol. 10, No. .6 1998.
Frech Karl D.
Fuji Photo Film Co. , Ltd.
Sughrue & Mion, PLLC
Walsh Daniel
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