Patent ID: 9363885
Filing Date: 2016-06-07
CPC Classification: H01L,H05K

Claim Text:
1. A method of fabricating a heat dissipating board, comprising: a substrate intermediate forming step of forming a substrate intermediate with an insulating layer made of an insulating resin material and a conducting layer made of a conductive material on the insulating layer; a through hole forming step of forming a through hole having an approximately cylindrical shape, the through hole penetrating through the substrate intermediate; an inserting step of inserting a heat conducting member to be disposed in the through hole, the heat conducting member being made of a metal and having an approximately cylindrical shape; and a plastically deforming step of plastically deforming the heat conducting member to be secured in the through hole; wherein prior to the inserting step an annealing step of annealing the heat conducting member is performed; wherein the plastically deforming step is performed by disposing a support plate at one side of the substrate intermediate so as to obstruct the through hole and then pressing and contacting a pressure piece against a pressing surface of the heat conducting member from another side of the substrate intermediate; and wherein when the pressure piece is brought in pressure contact with the heat conducting member in the plastically deforming step, the pressure piece falls within a range of an outer edge of the pressing surface, and a diameter of the pressure piece is smaller than a diameter of the through hole to which the heat conducting member is to be secured.