Patent ID: 6440774
Filing Date: 2002-08-27
Classification: H01L

Abstract:
A method of manufacturing an electronic device, comprisingmounting plural sets of electronic components on a ceramic substrate and sealing and molding the electronic components with thermosetting resin by transfer molding, wherein the ceramic substrate is provided with a metallic thin film integrated into at least one selected from an upper surface and a lower surface of the ceramic substrate in its peripheral portion, the ceramic substrate is placed so as to extend both inside and outside a cavity of a mold for transfer molding, and the metallic thin film is positioned on a portion with which an upper mold and a lower mold of the mold come into contact; the thermosetting resin for transfer molding is injected into the cavity, is molded, and is cured by heating; and the metallic thin film has a thickness in a range of 10 to 50 &mgr;m and a width in a range of 1.0 to 2.5 mm.