Patent ID: 7326637
Filing Date: 2008-02-05
Classification: H01L,H05K

Abstract:
1. A method for manufacturing a bonding interface for mechanical and electrical bonding of a first electronic device containing structure to a second electronic device containing structure, comprising: (a) providing a membrane having a first and second planar surface, said first planar surface being parallel to said second planar surface, (b) bombarding said membrane with a multiplicity of particles from a radioactive source to form a multiplicity of tracks through said membrane; (c) exposing said bombarded membrane to at least one anisotropic etchant to enlarge the tracks formed through said membrane by said multiplicity of particles, so as to form a multiplicity of holes extending between said first and second planar surfaces of said membrane and being substantially normal thereto, said holes having a diameter of less than 1 micron and having a density in said membrane of at least 1 hole per 4 square microns; (d) providing electrically conductive material inside said multiplicity of holes, said conductive material forming a multiplicity of rigid electrically conductive pins; and (d) selectively removing a portion of said membrane from said first and second planar surfaces so as to reduce the thickness of said membrane and to expose a portion of each of said multiplicity of pins protruding from the surfaces of said membrane.