| 摘要 |
PURPOSE:To provide the alkali-developable photosensitive resin composition and the photosensitive element superior in resolution, close adhesion, and resistance to etching and plating. CONSTITUTION:The photosensitive resin composition comprises (a) a polymer binder soluble in an aqueous solution of alkali and having carboxyl groups and/or dicarboxylic anhydride groups, and aromatic rings, (b) an oligomer soluble in an aqueous solution of alkali and having carboxyl groups and photoreactive unsaturated groups on the side chains, and (c) a sensitizer and/or its system to be allowed to produce free radicals; and having a difference between the refractive indeces of the binder (a) and the oligomer (b) of <=0.04 at 25 deg.C. |
