Pigment dispersion liquid, colored composition for color filter, color filter, liquid crystal display and organic electroluminescence display

• Main Authors: KAWAGUCHI, AYAKO, IJIMA, YOICHIROU, SAKO, NAOKI, OHATA, TATSUHIRO, TANOOKA, HISANAGA, ENDOU, NORIKO, OKADA, HIDEO
• Format: Patent
• Language: Chinese; English
• Published: 16.03.2009
• Subjects: ADHESIVES; APPARATUS SPECIALLY ADAPTED THEREFOR; CHEMISTRY; CINEMATOGRAPHY; DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING; DYES; ELECTROGRAPHY; FREQUENCY-CHANGING; HOLOGRAPHY; LAKES; MATERIALS THEREFOR; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; MORDANTS; NATURAL RESINS; NON-LINEAR OPTICS; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICAL LOGIC ELEMENTS; OPTICS; ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES; ORIGINALS THEREFOR; PAINTS; PHOTOGRAPHY; PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES,e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTORDEVICES; PHYSICS; POLISHES; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF

The objective of the present invention is to provide a pigment dispersion liquid in which both high contrast and dispersion stability are achieved when the pigment which is made into fine particles is used, and also to provide a colored composition for a color filter having good development property by using the same. The present invention provides a pigment dispersion liquid comprising a pigment, a solvent and a dispersant, wherein said dispersant comprises a block copolymer comprising a block A having a solvent affinity and a block B having a functional group comprising nitrogen atom, and an amine value of said dispersant is 80mg KOH/g or more and 150mg KOH/g or loss in terms of an effective solid content. The present invention also provides an application thereof.