ALKALI-SOLUBLE RESIN, POSITIVE PHOTOSENSITIVE RESIN COMPOSITION, CURED FILM, PROTECTIVE FILM, INSULATING FILM, AND SEMICONDUCTOR DEVICE AND DISPLAY DEVICE BOTH INCLUDING SAME

摘要

Disclosed is an alkali-soluble resin including a polybenzoxazole precursor structure constituted of both a bis(aminophenol) and a structure derived from a dicarboxylic acid, wherein when the two aromatic rings of the bis(aminophenol) are rotated, the rotational energy barrier for the dihedral angle, as obtained by a calculation based on computational chemistry, is 3 kcal/mol or more.