Patent ID: 7882628
Filing Date: 2011-02-08
Classification: H01L,Y10T

Abstract:
1. A method comprising: providing a body and forming a first metal pad layer on a first surface thereof; forming a second metal pad layer in contact with the first metal pad layer, wherein the first and second metal pad layers are formed so that the first metal pad layer includes a plurality of spaced apart metal pads and the second metal pad layer includes a plurality of spaced apart metal pads, the second metal pad layer having a denser pitch than the first metal pad layer; forming a dielectric layer between the metal pads in the first metal pad layer and between the metal pads in the second metal pad layer; after forming the first and second metal pad layers and the dielectric layer, forming a plurality of vias extending through the body from a second surface thereof, the vias extending through a thickness of the body and exposing the first metal pad layer; forming an insulating layer on sidewalls of the vias and on the second surface; forming an electrically conductive layer on the insulating layer and on the exposed surface of the first metal layer; and coupling a plurality of elements to the second metal pad layer and coupling the electrically conductive layer to a substrate, the body being positioned between the elements and the substrate.