COLORING COMPOSITION FOR COLOR FILTER AND COLOR FILTER

摘要

A coloring composition for a color filter comprising a treated pigment which is produced by preparing a mixture of a crude organic pigment having an average particle diameter of more than 100 nm or a pre-pigment being formed by the dry pulverization of said crude organic pigment and having an average primary particle diameter of 10 to 100 nm with a small amount of an organic solvent exhibiting a crystal growth function for the above crude organic pigment or pre-pigment, and then subjecting the above mixture to dry pulverization, and has a particle size distribution wherein pigment particles having a primary particle diameter of 100 nm or more account for 20 wt % or less of the total pigment particles and pigment particles having a primary particle diameter in the range of 20 to 100 nm account for 60 wt % or more of the total pigment particles; and a color filter which has a filter segment comprising the above coloring composition for a color filter.