Patent ID: 7605213

Claim:
An epoxy resin composition for encapsulating a semiconductor comprising (A) an epoxy resin represented by general formula (1), (B) a phenol resin represented by general formula (2), (C) a curing accelerator containing an adduct of a phosphine compound and a quinone compound, (D) a compound in which hydroxyl groups are attached to each of two or more adjacent carbon atoms of an aromatic ring, (E) a silane coupling agent and (F) an inorganic filler, wherein the inorganic filler (F) is contained in 84 wt % to 92 wt % both inclusive in the total amount of the epoxy resin composition: wherein Rs, which are the same or different, represent hydrogen or alkyl having 1 to 4 carbon atoms; a is an integer of 0 to 4; b is an integer of 0 to 4; c is an integer of 0 to 3; d is an integer of 0 to 4; and n is an average and 0 or a positive number of 10 or less; wherein Rs, which are the same or different, represent hydrogen or alkyl having 1 to 4 carbon atoms; a is an integer of 0 to 4; b is an integer of 0 to 4; c is an integer of 0 to 3; d is an integer of 0 to 4; and n is an average and 0 or a positive number of 10 or less.