COLORING AGENT, COLORING COMPOSITION, COLOR FILTER AND DISPLAY ELEMENT

摘要

Provided is a novel coloring agent which has high solubility in an organic solvent and excellent heat resistance and is useful for the formation of a color filter or the like. This coloring agent is represented by formula (1). (In formula (1), D represents a coloring agent base; R represents a substituted or unsubstituted alkylene group, a substituted or unsubstituted alkenylene group, a substituted or unsubstituted divalent alicyclic hydrocarbon group, or a substituted or unsubstituted arylene group; X+ represents an organic ammonium ion; and m represents an integer of 1 or more.)