Patent ID: 6936927

Claim:
A circuit device comprising: a first conductive layer; a second conductive layer; insulation resin by which said first conductive layer and said second conductive layer are adhered to each other in the form of a sheet; a first conductive path layer that is formed by etching said first conductive layer; a second conductive path layer that is formed by etching said second conductive layer; a semiconductor element electrically insulated and fixed on said first conductive path layer; multi-layer connecting means for connecting said first conductive path layer and said second conductive path layer to each other at appointed points, passing through said insulation resin; a sealing resin layer for overcoating said first conductive path layer and said semiconductor element; and an external electrode secured at an appointed point of said second conductive path layer, wherein the first conductive path layer and the semiconductor element are supported from above by the sealing resin layer, wherein said second conductive layer is formed to become thicker than the first conductive layer in order to retain supporting strength.