Patent ID: 6832436
Filing Date: 2004-12-21
Classification: H01L,H05K,Y10T

Abstract:
A method for forming a substructure, comprising the steps of:providing a sheet of conductive material having an exposed first surface and an exposed second surface; forming a hole through the sheet of conductive material; applying a first layer of dielectric material to the exposed first surface of the sheet of conductive material, after the step of forming a hole, wherein no material has been inserted into the hole prior to said applying the first layer of dielectric material to the exposed first surface of the sheet of conductive material; applying a second layer of dielectric material to the exposed second surface of the sheet of conductive material, after the step of forming a hole; applying a first layer of conductive material on the first layer of dielectric material; and applying a second layer of conductive material on the second layer of dielectric material. forming a hole through the first layer of conductive material; and forming a hole through the second layer of conductive material, wherein during the step of applying the first layer of dielectric material to the exposed first surface of the sheet of conductive material, some of the dielectric material of the first layer of dielectric material is inserted into the hole, and wherein during the step of applying the second layer of dielectric material to the exposed second surface of the sheet of conductive material, some of the dielectric material of the second layer of dielectric material is inserted into the hole, such that the hole is filled with said some of the dielectric material of the first layer of dielectric material and said some of the dielectric material of the second layer of dielectric material.