Patent ID: 8240030
Filing Date: 2012-08-14
Classification: H01L,H05K,Y10T

Abstract:
1. A method for manufacturing an electronic device, comprising the steps of: preparing one or more electronic elements covered with a first insulating film; forming over the first insulating film a protrusion formed using a conductor which is electrically connected to at least one of the electronic elements; attaching a prepreg including a reinforcing material to a top surface of the first insulating film and a surface of the protrusion to form a portion of a top surface of the prepreg, which protrudes due to the protrusion; curing the prepreg attached to the top surface of the first insulating film and the surface of the protrusion to form a second insulating film including the reinforcing material; and removing a protruding portion of a top surface of the second insulating film together with the reinforcing material to form an opening in the second insulating film.