PHOTOSENSITIVE RESIN COMPOSITION, CURED FILM, METHOD FOR FORMING CURED FILM, ORGANIC EL DISPLAY DEVICE AND LIQUID CRYSTAL DISPLAY DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a photosensitive resin composition which is excellent in storage stability, sensitivity and development margin (development latitude), and gives a cured film with excellent transparency and solvent resistance.SOLUTION: The photosensitive resin composition comprises (A) a copolymer comprising a monomer unit (1) having a phenolic hydroxyl group, a monomer unit (2) having a residue in which a carboxy group is protected by an acid-decomposable group or a monomer unit (2) having a residue in which a phenolic hydroxyl group is protected by an acid-decomposable group, and a monomer unit (3) having a cyclic ether residue with a 3-membered ring and/or a 4-membered ring, (B) a photoacid generator, and (C) a solvent.