Patent ID: 8020289

Claim:
A method of producing an electronic device comprising: mounting electronic parts on only a first face of a circuit board; holding the circuit board in a first cavity of a first mold in a manner that a second face of the circuit board opposite from the first face is tightly contact with an inner face of the first cavity of the first mold; molding a first casing with thermosetting resin in a manner that the second face of the circuit board defines a part of an outer surface of the first casing, the first casing sealing the first face of the circuit board and the electronic parts mounted on the first face; mounting electronic parts on the second face of the circuit board, after the molding of the first casing is finished; holding the circuit board in a second cavity of a second mold in a manner that a part of the outer surface of the first casing is tightly contact with an inner face of the second cavity of the second mold; and molding a second casing with thermosetting resin, the second casing sealing the second face of the circuit board and the electronic parts mounted on the second face, wherein the molding of the second casing integrates the first casing and the second casing with each other so as to form a casing of the electronic device, and the first casing and the second casing are tightly contact with each other.