Patent ID: 9185793
Filing Date: 2015-11-10
Classification: H01L,H05K,Y10T

Abstract:
1. A multilayer electronic support structure comprising a plurality of dielectric layers of a dielectric material extending in an X-Y plane and comprising at least one coaxial pair of stacked posts extending through at least one layer of the dielectric material in a Z direction that is perpendicular to the X-Y plane, wherein each of said coaxial pair of stacked via posts comprises a cylindrical central post surrounded by a tubular via post separated from the central post by a separating tube of the dielectric material wherein the cylindrical central post and the tubular via post are cofabricated; wherein said cylindrical central post is coupled to a voltage source and said tubular via post is coupled to a ground; and wherein, in the Z direction, both said cylindrical central post and said tubular via post have a plurality of seed layers separated by electroplated layers.