Patent ID: 7692299

Claim:
A semiconductor apparatus including a semiconductor chip, a lead electrode and a support electrode comprising: a second thermal stress relaxation body arranged between the semiconductor chip and the lead electrode; jointing members respectively placed between the second thermal stress relaxation body and the semiconductor chip and between the second thermal stress relaxation body and the lead electrode, while making the second thermal stress relaxation body connected to the lead electrode; a first thermal stress relaxation body arranged between the semiconductor chip and the support electrode; jointing members respectively placed between the first thermal stress relaxation body and the semiconductor chip and between the first thermal stress relaxation body and the support electrode, while making the first thermal stress relaxation body connected to the support electrode; wherein the second thermal stress relaxation body is comprised of a material which has a thermal expansion coefficient in between the thermal expansion coefficients of the semiconductor chip and the lead electrode, and the first thermal stress relaxation body is comprised of a material which has a thermal expansion coefficient in between the thermal expansion coefficients of the semiconductor chip and the support electrode, and has a thermal conductivity of 50 to 300 W/(m·° C.).