Patent ID: 6794747
Filing Date: 2004-09-21
Classification: H01L,H05K

Abstract:
A semiconductor device comprising:as a core substrate of a high thermo conductive ceramic substrate having circuit patterns on opposed surfaces, the high thermo conductive ceramic substrate having on one surface a first circuit board of at least one layer having a first cavity structure, and on the other surface a second circuit board of at least one layer having a second cavity structure; a first active element mounted on the circuit pattern on the high thermo conductive ceramic substrate within the first cavity; a second active element mounted on the circuit pattern on the high thermo conductive ceramic substrate within the second cavity; and an external electrode integrated with the surface of the second circuit board, the first circuit board surface being covered; wherein a heat dissipation via is formed on the second circuit board, the high thermo conductive ceramic substrate and the external electrode on the surface of the second circuit board are connected thermally to each other, and heat of at least one active element selected from the first active element and the second active element is dissipated outward through the high thermo conductive ceramic substrate, the heat dissipation via and the external electrode on the surface of the second circuit board.