Patent ID: 7659613
Filing Date: 2010-02-09
Classification: H01L

Abstract:
1. A semiconductor device comprising: a metallic base plate, which is provided with a stepped surface positioned at lower level at a portion of the base plate than a main surface of the base plate; a semiconductor element arranged on the base plate at a portion other than the portion where the stepped surface is provided; at least a first dielectric plate, arranged on the base plate, having a surface on which a circuit pattern is formed; a frame-shaped sidewall, provided on the base plate, surrounding the first dielectric plate and the semiconductor element; an insulator, which is mounted on the stepped surface, forming a part of the sidewall, a power supply portion including a band-shaped conductor provided at a height substantially equal to the surface of the first dielectric plate with respect to a main surface of the base plate, wherein the conductor penetrates through the power supply portion; and an interconnection which connects the band-shaped conductor to the circuit pattern.