RESIN COMPOSITION

摘要

PURPOSE: To provide a photosensitive resin composition which achieves high resolution, particularly a colored photosensitive resin composition which achieves high resolution even when a pigment of a small particle diameter is used at a high concentration. CONSTITUTION: The resin composition comprises a polycarboxylic acid resin obtained by reacting (a1) an epoxy compound having at least two epoxy groups per molecule with (a2) a polycarboxylic acid under such conditions as to satisfy the expression (the number of epoxy equivalents of the epoxy compound)>(the number of carboxylic acid equivalents of the polycarboxylic acid) to obtain a reaction product (a), which is brought into reaction with (b) an unsaturated group-containing monocarboxylic acid to obtain (c) a reaction product, and further reacting (c) the reaction product with (d) an acid anhydride.