Colorant dispersion, a colored resin composition for color filter, a color filter and a display device

A good stability, providing a formable colorant dispersion coating heat resistance is improved. A color material composed of polyoxometalate anion containing a specific aromatic cation and tungsten, a dispersant, and an organic acid compound, a colorant dispersion containing a solvent, a dispersant, the following general has a structural unit represented by formula (II), a block copolymer of amine value is less 70 mgKOH / g or more 160 mgKOH / g, the solubility of the coloring material solvent at 23 ° C. is 0.1 (g / 10 ml solvent) or less of the solvent. .BACKGROUND