PIGMENT DISPERSION, COLORING COMPOSITION FOR COLOR FILTER, COLOR FILTER, LIQUID CRYSTAL DISPLAY AND ORGANIC EL DISPLAY

摘要

Disclosed is a pigment dispersion exhibiting both high contrast and adequate dispersion stability, wherein a granulated pigment is used. Also disclosed is a coloring composition for color filters having good developability, which uses the pigment dispersion. Specifically disclosed is a pigment dispersion containing a pigment, a solvent and a dispersing agent, which is characterized in that the dispersing agent contains a block copolymer composed of a block A having an affinity for solvents and a block B having a functional group containing a nitrogen atom. This pigment dispersion is also characterized in that the dispersing agent has an amine number of not less than 80 mgKOH/g but not more than 150 mgKOH/g in terms of the effective solid content. Also specifically disclosed is a use of such a pigment dispersion.