Method of producing phthalocyanine pigment nano-sized particle dispersion, and method of producing an inkjet ink for a color filter containing the dispersion; and colored light-sensitive resin composition, light-sensitive transfer material, and color filter, containing the dispersion; and colored light-sensitive resin composition, light-sensitive transfer material, and color filter, containing the dispersion, and liquid crystal display device and ccd device using the same

Abstract

A method of producing a phthalocyanine pigment nano-sized particle dispersion, containing: mixing a phthalocyanine compound solution of a phthalocyanine compound dissolved in an acid or a good solvent containing an acid, with an organic solvent that is a poor solvent with respect to the phthalocyanine compound, to prepare a mixed liquid in which a phthalocyanine compound crystal is formed, wherein a phthalocyanine compound crystal having one crystalline form selected from the group consisting of α, β, γ, ε, δ, π, ρ, A, B, X, Y, and R is added to the organic poor solvent or the mixed liquid, thereby producing the thus-formed phthalocyanine compound crystal having the same crystalline form as that of the added phthalocyanine compound crystal, and wherein an additive having a mass average molecular weight of 1,000 or more is incorporated therein.

Dependencies are inferred from the claim text.