Patent ID: 6908856

Claim:
A method for the fabrication of a device comprising electrical through hole interconnects, comprising: (A) providing a substrate; (B) dry etching said substrate so as to form at least one substrate hole; (C) depositing a first layer of patternable dielectric material on said substrate, wherein said substrate hole is filled; (D) anisotropically dry etching in said first layer of patternable dielectric material within said substrate hole so as to form at least one dielectric hole within said substrate hole, wherein the sidewalls of said substrate hole remain covered with said first layer of patternable dielectric material, until the bottom of said substrate hole is reached; (E) depositing a layer of conducting material on the bottom and on the sidewalls of said dielectric hole so as to transform said dielectric hole into a conductor hole; and (F) depositing a second layer of patternable dielectric material on top of said layer of conducting material, wherein said conductor hole is filled.