Patent ID: 7782621

Claim:
A circuit module comprising: a thermally conductive a housing; a circuit board disposed inside the thermally conductive housing above a bottom of the thermally conductive housing comprising an upper surface comprising an opening and a plurality of electrode pads surrounding the opening and a lower surface opposite the upper surface; a semiconductor chip connected with solder to the plurality of electrode pads on the upper surface of the circuit board; a heat sink connected to the upper surface of the semiconductor chip; a thermally conductive structure for thermally connecting the thermally conductive housing to the semiconductor chip, wherein the thermally conductive structure has elasticity, wherein the thermally conductive structure passes through the opening in the circuit board, and wherein one surface of the thermally conductive structure is in contact with the lower surface of the semiconductor chip and the other surface of the structure is in contact with a surface of the thermally conductive housing, and; a plurality of fasteners passing through the thickness of the circuit board in an area surrounding the semiconductor chip to attach the heat sink to the thermally conductive housing such that the heat sink and the thermally conductive housing are opposed to each other.