Patent ID: 9099539
Filing Date: 2015-08-04
Classification: H01L

Abstract:
1. A method of processing a semiconductor substrate, the semiconductor substrate having integrated circuitry and a plurality of terminals electrically coupled to the integrated circuitry, the method comprising: forming a plurality of electrically conductive interconnects extending at least partially through the substrate and in contact with corresponding terminals, the interconnects having back side portions at a back side of the semiconductor substrate; constructing a conductive backplane at the back side of the semiconductor substrate, wherein constructing a conductive backplane at the back side of the semiconductor substrate comprises depositing a conductive layer onto the back side of the substrate, the conductive layer having openings around the interconnects and dielectric spacers in the openings between the conductive layer and the interconnects; and electrically coupling at least one of the back side portions of the interconnects to the backplane via a conductive coupler in one of the openings and in direct contact with the corresponding interconnect and the conductive layer, and electrically isolating at least one of the plurality of other interconnects from the backplane.