Patent ID: 6641928
Filing Date: 2003-11-04
Classification: C08G,C09J,H01L,Y10T

Abstract:
An adhesive for connecting a semiconductor chip and a wiring board, comprising a first resin component that is an epoxy which is polymerizable, a first hardener for inducing a self-polymerization reaction of the first resin component, and a second hardener which is addition-polymerized with the first resin component, wherein the adhesive after curing has an elastic modulus decreasing with an increase in temperature, and wherein an elastic modulus loss sharply increases at both of a first temperature of from higher than 30Â° C. to lower than 150Â° C. and a second temperature within a range of from 130Â° C. or more to 250Â° C. or less and higher than the first temperature.