| abstract |
The present invention provides a red pigment dispersion for color filters excellent in pigment dispersibility and dispersion stability, a method for producing the same, and a pigment dispersion resist composition for color filters capable of increasing contrast and increasing transmittance. A pigment dispersion aid (A) which is a sulfonated product of a finely divided organic pigment and a compound having the same skeleton as the finely divided organic pigment, for example, a monoazo compound such as Pigment Red 2 is used. A pigment dispersion aid (B) obtained by sulfonation treatment, a pigment dispersant, and an organic solvent, the content of the pigment dispersion aid (A) and the content of the pigment dispersion aid (B) Is 0.5 to 30 parts by mass with respect to 100 parts by mass of the finely divided organic pigment, and the finely divided organic pigment comprises the organic pigment and the pigment dispersion aid (A). A red pigment dispersion for a color filter, which is made by mixing and a fine particle. [Selection figure] None |