Patent ID: 8586872

Claim:
A metal core substrate comprising: a sheet of metal core material disposed in a power supply box; a first routing member mounted to the sheet of metal core material, comprised of: a first area of the sheet of metal core material; a first insulation layer formed on the first area; and a first circuit pattern made of a copper foil and formed on the first insulation layer; a second routing member mounted to the sheet of metal core material, comprised of: a second area of the sheet of the metal core material, which is separate from the first area; a second insulation layer formed on the second area; and a second circuit pattern made of a copper foil and formed on the second insulation layer; and a connecting member which electrically connects the first routing member and the second routing member, the connecting member comprised of a third area of the sheet of the metal core material, which is interposed between the first area and the second area, wherein the third area is exposed and does not include an insulation layer formed thereon.