Patent ID: 6639303
Filing Date: 2003-10-28
Classification: H01L

Abstract:
An integrated circuit comprising a die or a wafer comprising:a semiconductor substrate having one or more through holes passing between a first side and a second side of the substrate, wherein at least one of the through holes widens as it goes through semiconductor material of the substrate from the second side of the substrate to the first side of the substrate; a transistor having at least a portion of which is formed over the first side of the substrate; a dielectric in each of the through holes, wherein the dielectric in each through hole protrudes out of the through hole out of the semiconductor material of the substrate on the second side; and one or more conductive contacts formed in the one or more through holes, wherein the conductive contact formed in each through hole protrudes out of the through hole out of the semiconductor material of the substrate on the second side.