Patent ID: 8357942

Claim:
A semiconductor device comprising: a substrate; a semiconductor element having a semiconductor substrate which is placed on the substrate; a source electrode which is placed on the semiconductor element; a peripheral circuit section having a high dielectric substrate which is placed on the substrate and the peripheral circuit section being placed adjacent to the semiconductor element; a via hole which passes through the high dielectric substrate from a surface of the high dielectric substrate to a surface of the substrate; a first metal layer which is provided in a sidewall of the via hole; a second metal layer which is placed on a bottom surface of the high dielectric substrate which is facing with the substrate; and an electrode for grounding which is placed on the surface of the high dielectric substrate, and the electrode for grounding being connected with the second metal layer via the first metal layer and being connected with the source electrode via only a bonding wire, wherein the source electrode is grounded by the second metal layer place between the peripheral circuit section and the substrate via the via hole formed inside the peripheral circuit section.