Patent ID: 6931726
Filing Date: 2005-08-23
Classification: H01L,H05K,Y10T

Abstract:
1. A method of forming an interconnect structure comprising the steps of: providing a substrate having first and second opposing surfaces and at least one internal side wall defining a through hole within said substrate extending from said first opposing surface to said second opposing surface wherein said substrate includes a metal layer between said first and second opposing surfaces and first and second non-conductive layers positioned, respectively, between said first opposing surface and said metal layer and between said second opposing surface and said metal layer; positioning a third conductive layer substantially within said first non-conductive layer; positioning a fourth conductive layer within said first non-conductive layer between said third conductive layer and said metal layer; positioning a first conductive material on said at least one internal side wall of said substrate; positioning a first conductive layer on a portion of said first surface of said substrate, said first conductive layer having a first layer portion positioned over said through hole and electrically connected to said first conductive material on said internal side wall of said substrate; positioning a second conductive layer on a portion of said second surface of said substrate, said second conductive layer having a first layer portion positioned over said through hole and electrically connected to said first conductive material on said internal side wall of said substrate; positioning a first dielectric layer on said first conductive layer and said first opposing surface of said substrate and having at least one internal side wall defining an aperture in said first dielectric layer; and positioning a second conductive material on said internal side wall of said first dielectric layer and including a portion of said second conductive material positioned on and electrically connected to said first layer portion of said first conductive layer.