Patent ID: 7045393
Filing Date: 2006-05-16
Classification: H01L,H05K

Abstract:
1. A method for manufacturing circuit devices comprising: preparing a laminated plate by laminating a first conductive film and a second conductive film via a third conductive film; forming a conductive wiring layer by etching said first conductive film into a pattern; removing said third conductive film by use of said conductive wiring layer as a mask; covering front-surface portions of the second conductive film exposed by removing said third conductive film, said conductive wiring layer, and end faces of the third conductive film with an insulating layer; partially exposing said conductive wiring layer by removing a part of said insulating layer; fixedly fitting semiconductor elements onto said insulating layer and electrically connecting said semiconductor elements with said conductive wiring layer; covering said semiconductor elements with a sealing resin layer; and removing said second conductive film to expose said third conductive film on the rear surface.