Patent ID: 7692296

Claim:
A semiconductor device comprising a semiconductor element having a metal bump electrode formed thereover; a multilayer substrate having an interconnect layer to be placed at a position corresponding to the disposal position of the bump electrode of the semiconductor element and a plurality of insulating material layers; and a thermosetting adhesive material sandwiched between the semiconductor element and the multilayer substrate for connecting the multilayer substrate with the semiconductor element while bringing the interconnect layer of the multilayer substrate into contact with the metal bump, wherein: an elastic modulus of the thermosetting adhesive material after thermosetting is Ea, an elastic modulus of the insulating material layer on the semiconductor element side of the multilayer substrate after thermosetting is Eb, and the relationship between Ea and Eb, at the same temperature as one another, satisfies the following rational expression at a thermal contact bonding temperature of the metal bump and the interconnect layer: ⅓Eb<Ea<Eb<3Ea.