Patent ID: 6168872
Filing Date: 2001-01-02
Classification: H01L,Y10T

Abstract:
A semiconductor encapsulating epoxy resin composition comprising an epoxy resin, a curing agent, an inorganic filler, and a curing accelerator as essential components, said curing accelerator comprising an organic phosphorus compound of the following general formula (1): ##STR7## wherein R.sup.1 is independently hydrogen, C.sub.1-4 alkyl or C.sub.1-4 alkoxy, n is an integer of 0 to 5, X is --(CH.sub.2).sub.p -- or a group represented by the following general formula (2): ##STR8## wherein R.sup.2 is independently hydrogen, C.sub.1-4 alkyl or C.sub.1-4 alkoxy, p is an integer of 3 to 12, q and r each are, independently, an integer of 0 to 12, and m is an integer of 0 to 4.