Patent ID: 6294271
Filing Date: 2001-09-25
Classification: H01L,Y10T

Abstract:
A sealing material for flip-chip type semiconductor devices in the form of a liquid epoxy resin composition comprising(A) a liquid epoxy resin,(B) an inorganic filler, and(C) a curing accelerator having a solubility of up to 1% by weight in the epoxy resin, a melting point of at least 170.degree. C., a mean particle diameter of 1 to 5 .mu.m, and a maximum particle diameter of up to 20 .mu.m, and represented by the following general formula (1): ##STR8##wherein R.sup.1 and R.sup.2 each are hydrogen, methyl, ethyl, hydroxymethyl or phenyl, R.sup.3 is methyl, ethyl, phenyl or allyl, and R.sup.4 is hydrogen or a group of the following formula (2): ##STR9##