Patent ID: 7741388
Filing Date: 2010-06-22
Classification: C08G,C08K,C08L,H01L

Abstract:
1. An epoxy resin composition for encapsulating a semiconductor essentially comprising (A) an epoxy resin represented by the following formula (1), (B) a phenolic resin represented by the following formula (2), (C) a curing accelerator, (D) an inorganic filler and (E) a triazole compound having a mercapto group, wherein (D) the inorganic filler is present in an amount of 84 wt % to 92 wt % based on the total amount of the epoxy resin composition; and wherein (E) the triazole compound is present in an amount of 0.01 to 2 wt % based on the total amount of the epoxy resin composition: Formula (1) wherein R is hydrogen or an alkyl group having 1 to 4 carbons, which may be the same or different from each other; “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 a mean value and 0 or a positive number of 10 or less; Formula (2) wherein R is hydrogen or an alkyl group having 1 to 4 carbons, which may be the same or different from each other; “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 a mean value and 0 or a positive number of 10 or less.