Patent ID: 6022763
Filing Date: 2000-02-08
Classification: H01L

Abstract:
A method for manufacturing a semiconductor device comprising the steps of:forming a wiring circuit pattern including connection parts for a semiconductor element and a metallic layer at a predetermined position of a first main surface of a substrate, and a metallic layer extended outwardly and separately from an area of the predetermined position,forming planar external connection terminals at predetermined positions of a second main surface of the substrate,forming through holes for electrically connecting the wiring pattern to the external connection terminals,mounting and packaging the semiconductor element in the predetermined position to form an assembly,setting in place and disposing the assembly in a metallic mold for transfer molding, the metallic mold comprising a lower metallic mold having a depressed part for setting in place and disposing the assembly, an upper metallic mold matched to the upper metallic mold and having a depressed part for setting in place and disposing the assembly, and a runner part including a gate part for supplying a melt of resin,supplying molding resin by a plunger via the runner part and the gate part into the metallic mold,filling the metallic mold with the molding resin to form a one-sided sealed substrate in which the semiconductor element and the wring circuit pattern are sealed on the first main surface of the substrate,hardening the molding resin in the metallic mold,removing the one-sided sealed substrate form the metallic mold, andcutting and separate and excess resin layer remaining in the runner part and the plunger.