METAL-BASE CIRCUIT BOARD AND METHOD OF MANUFACTURING THE SAME

PROBLEM TO BE SOLVED: To provide a metal-base circuit board having excellent insulating property and heat-dissipating property, using a simple configuration and the method of manufacturing the metal-base circuit board.SOLUTION: The metal-base circuit board includes: a thermosetting resin sheet 12a (a first thermosetting resin layer) arranged on a metal plate 11; an insulating sheet 13 (an insulating layer) forming an opening at the mounting location of an electronic part arranged on the thermosetting resin layer sheet 12a; and a thermal conductive path member 15, disposed in the opening of the insulating sheet 13. The metal-base circuit board, further, includes the thermosetting resin sheet 12b (the first thermosetting resin layer), disposed on the insulating sheet 13 and the thermal conductive path member 15; and a heat-dissipating land 14b, arranged at the mounting place of the electronic part of the thermosetting resin sheet 12b and a conductive circuit 14a disposed at an interval from the heat-dissipating land. The metal-base circuit board is formed, by integrating these thermosetting resin sheets, insulation sheets, thermal conductive path members and heat-dissipating lands and conductive circuits through heating and pressing.