Patent ID: 6711812
Filing Date: 2004-03-30
Classification: H01L,H05K,Y10S,Y10T

Abstract:
A method of making a thermally enhanced printed circuit wiring board substrate for ball grid integrated circuit packages comprising the steps of:a) providing an initial thin conductive metal core having oppositely facing surfaces, b) forming one or more holes in said metal core at each of a plurality of through-core via sites, c) laminating a thin rigidifying non-conductive dielectric sheet to each said oppositely facing surfaces, respectively, d) forming at least one via to said metal core in one of said dielectric sheets, e) applying at least one thin conductive layer on a surface of one of said thin rigidifying non-conductive sheets and making at least one electrical connection to said initial thin conductive metal core at said at least one via to said metal core.