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Title:
COLORANT DISPERSION, COLORING RESIN COMPOSITION, COLOR FILTER, AND LIQUID-CRYSTAL DISPLAY
Document Type and Number:
WIPO Patent Application WO/2007/034963
Kind Code:
A1
Abstract:
A pigment dispersion which has excellent depolarization characteristics, can form color pixels having a high contrast, and has excellent storage stability; a coloring resin composition containing this pigment dispersion; a color filter made from this coloring resin composition; and a liquid-crystal display employing this color filter. The dispersion is a colorant dispersion containing (A) a colorant and (B) a dispersant, and is characterized in that the colorant (A) comprises a pigment whose crystallite size is 140Å or smaller in terms of the value calculated using the Scherrer equation from a half-value width determined by X-ray diffractometry, and that the dispersant (B) comprises (a) a nitrogenous graft copolymer and/or an acrylic block copolymer.

Inventors:
TANOOKA HISANAGA (JP)
OOHATA TATSUHIRO (JP)
NARUTO TOSHIYA (JP)
Application Number:
PCT/JP2006/319061
Publication Date:
March 29, 2007
Filing Date:
September 26, 2006
Export Citation:
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Assignee:
MITSUBISHI CHEM CORP (JP)
TANOOKA HISANAGA (JP)
OOHATA TATSUHIRO (JP)
NARUTO TOSHIYA (JP)
International Classes:
C09D17/00; C09B25/00; C09B29/52; C09B35/22; C09B57/04; C09B67/20; C09B67/46; G02B5/20; G02F1/1335; G03F7/004
Foreign References:
JPH1060360A1998-03-03
JP2003064293A2003-03-05
JP2003172815A2003-06-20
JP2004307853A2004-11-04
JP2005091511A2005-04-07
JP2002322226A2002-11-08
JPH1087768A1998-04-07
JP2006161035A2006-06-22
JP2006219599A2006-08-24
Attorney, Agent or Firm:
NAITO, Teruo (7-13 Nishi-shimbashi 1-chom, Minato-ku Tokyo 03, JP)
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