Patent ID: 7929313

Claim:
A method of manufacturing a multilayer printed circuit board, comprising: forming a first insulating resin base material, the forming includes forming a first conductor circuit and a metal layer on a surface of a resin-insulating layer, forming a second conductor circuit and a conductor circuit non-formation area facing said metal layer on the other surface, and forming a via hole electrically connecting said second conductor circuit on the other surface to said first conductor circuit on the surface and a via hole reaching said metal layer on the surface though a resin-insulating layer, the forming of the vial hole comprising plating on the outside of said conductor circuit non-formation area on the other surface; unifying by crimping a resin surface of a second insulating resin base material formed by attaching copper foil on a surface of the resin-insulating layer with said first insulating resin base material; forming a third conductor circuit on said second insulating resin base material and a via hole electrically connecting to the third conductor circuit, forming a concave portion from a resin-insulating layer surface in the conductor circuit non-formation area of said first insulating resin base material, housing a semiconductor element within said concave portion, the housing comprising adhering the semiconductor element with an adhesive; and forming a resin-insulating layer by coating said semiconductor element and a via hole.