Patent ID: 8921461

Claim:
An epoxy resin composition for encapsulating a semiconductor chip comprising (A) a crystalline biphenyl epoxy resin, (B) a phenol aralkyl resin having a biphenylene moiety represented by general formula (2): wherein R1 and R2 are independently hydrogen or alkyl having 1 to 4 carbon atoms and two or more R1s or two or more R2s are the same or different; a is an integer of 0 to 4; b is an integer of 0 to 4; c is an integer of 0 to 3; and n is an average and is a number of 0 to 10, (C-1) an epoxidized polybutadiene compound in the amount of 0.1 wt % to 1.5 wt % both inclusive in the total epoxy resin composition, and (D) a fused spherical silica in the amount of 85 wt % to 95 wt % both inclusive in the total epoxy resin composition, and (E) a curing accelerator.