COLOR FILTER PIGMENT DISPERSION LIQUID, COLOR FILTER COLORING COMPOSITION, COLOR FILTER, AND LIQUID CRYSTAL DISPLAY DEVICE

• Main Authors: OKADA HIDEO, ENDO NORIKO, SAKO NAOKI, KAWAGUCHI AYAKO, OHATA TATSUHIRO, TANOOKA HISANAGA
• Format: Patent
• Language: English; Japanese
• Published: 14.01.2016
• 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

PROBLEM TO BE SOLVED: To provide a pigment dispersion liquid which realizes both high contrast and dispersion stability when a brominated zinc phthalocyanine green pigment is used, and to provide a color filter coloring composition having good developability using the same.SOLUTION: A color filter pigment dispersion liquid contains a pigment, a solvent, and a dispersant. The pigment contains brominated zinc phthalocyanine and the solvent contains glycol alkyl ether acetate. The dispersant is a block copolymer comprising a solvent-philic block A and a block B having a functional group with a nitrogen atom, and has an amine number of 80 mgKOH/g to 150 mgKOH/g, inclusive (in terms of effective solid content). 【課題】 臭素化亜鉛フタロシアニン緑色顔料を用いた場合、高コントラストと分散安定性の両立を実現した顔料分散液を提供し、これを用いて現像性の良好なカラーフィルタ用着色組成物を提供する。【解決手段】 顔料、溶剤及び分散剤を含有し、該顔料が臭素化亜鉛フタロシアニンを含有し、該溶剤がグリコールアルキルエーテルアセテート類を含み、該分散剤が、親溶媒性を有するＡブロック及び窒素原子を含む官能基を有するＢブロックからなるブロック共重合体であり、そのアミン価が８０ｍｇＫＯＨ／ｇ以上１５０ｍｇＫＯＨ／ｇ以下（有効固形分換算）の分散剤を含有することを特徴とするカラーフィルタ用顔料分散液。【選択図】 なし