Patent ID: 8247905
Filing Date: 2012-08-21
Classification: H01L,Y10S

Abstract:
1. A device structure comprising a substrate, a discrete and patterned bottom metal contact pad located directly on selected regions of a top surface of said substrate, an inter-level dielectric (ILD) layer covering both the substrate and the discrete and patterned bottom metal contact pad, a metal via structure extending through the ILD layer onto a portion of an upper surface of the discrete and patterned bottom metal contact pad, a vertical conductive structure extending through the ILD layer onto another portion of the upper surface of the discrete and patterned bottom metal contact pad, a first top metal contact pad located on an upper surface of said vertical conductive structure, and a second top metal contact pad located on an upper surface of said metal via structure, wherein said first and second metal contact pads each have an upper surface that is coplanar with an upper surface of the ILD layer, wherein the metal via structure is a compositionally homogeneous structure and the vertical conductive structure comprises one or more ferromagnetic materials.