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Microfeature workpieces having interconnects and conductive backplanes, and associated systems and methods

  • US 7,902,643 B2
  • Filed: 08/31/2006
  • Issued: 03/08/2011
  • Est. Priority Date: 08/31/2006
  • Status: Active Grant
First Claim
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1. A microelectronic device, comprising:

  • a semiconductor substrate including integrated circuitry and terminals electrically coupled to the integrated circuitry;

    electrically conductive interconnects extending through at least a portion of the semiconductor substrate and electrically coupled to corresponding terminals; and

    a conductive backplane assembly comprisinga conductive layer at a back side of the semiconductor substrate, wherein the conductive layer includes an array of openings aligned with corresponding interconnects such that back side post portions of the interconnects extend through at least a portion of the respective openings in the conductive layer; and

    dielectric spacers in the openings between the conductive layer and the back side post portions of the corresponding interconnects, wherein at least one interconnect is electrically coupled to the conductive layer, and wherein at least one other interconnect is electrically isolated from the conductive layer.

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