Patent ID: 7470754

Claim:
An epoxy resin composition for encapsulating a semiconductor, consisting essentially of (A) an epoxy resin represented by general formula (1): wherein n is an average within a range of 1 to 10; G represents glycidyl; R1 and R2 independently represent hydrogen or alkyl or aryl having 1 to 8 carbon atoms and R1 and R2 is the same or different; and (B) a phenolic resin mainly comprising a phenolic resin component represented by general formula (2), in which a component having up to three aromatic rings in one molecule is contained in 0.8% or less in an area ratio as determined by GPC (Gel Permeation Chromatography) analysis; wherein n is an average within a range of 0 to 10; R1 and R2 independently represent hydrogen or alkyl or aryl having 1 to 8 carbon atoms and R1 and R2 is the same or different.