Patent ID: 9075307
Filing Date: 2015-07-07
Classification: G03F,H05K

Abstract:
1. A photosensitive resin composition for a protective film of a printed wiring board for a semiconductor package, the photosensitive resin composition comprising: (A) an acid-modified vinyl group-containing epoxy resin; (B) a phenol compound, wherein the phenol compound is a compound represented by formula (1) or formula (10), wherein, in formula (1), R wherein, in formula (10), R wherein, in formula (11), R (C) a compound having at least one ethylenically unsaturated group in each molecule; (D) a photopolymerization initiator; and (E) inorganic fine particles including barium sulfate, wherein the content of the phenol compound is 1.3-3 mass % based on the total solid mass of the photosensitive resin composition.