Patent ID: 7776247
Filing Date: 2010-08-17
Classification: B29C,H01L

Abstract:
1. A method of manufacturing an electronic device including an electronic circuit part and a resin-molded case for sealing the electronic circuit part, the method comprising: disposing an electronic element on a wiring plate that is electrically coupled with a connector terminal; covering a first surface of the wiring plate with a first casing element and covering a second surface of the wiring plate with a second casing element to form the electronic circuit part; disposing the electronic circuit part in a case cavity of a molding tool in such a manner that an end portion of the connector terminal protrudes to an outside of the case cavity; and filling resin into the case cavity of the molding tool to form the resin-molded case while keeping a state where a first pressure that pushes the first casing element toward the wiring plate and that changes with time is substantially equal to a second pressure that pushes the second casing element toward the wiring plate and that changes with time; wherein the first casing element and the second casing element are firmly attached to the wiring plate by the first pressure and the second pressure so that the electronic element is sealed between the first casing element and the second casing element; at least one of the first casing element and the second casing element has a wall portion that is disposed along a whole circumference of an outer end of a surface of the one of the first casing element and the second casing element and that protrudes toward the wiring plate; and the resin is filled into the case cavity so that the wall portion contacts the wiring plate and deforms when the first casing element and the second casing element are pushed toward the wiring plate by the filled resin.