A wafer-level 3D IC technology platform

  • R. J. Gutmann
  • , J. Q. Lu
  • , S. Pozder
  • , Y. Kwon
  • , D. Menke
  • , A. Jindal
  • , M. Celik
  • , M. Rasco
  • , J. J. McMahon
  • , K. Yu
  • , T. S. Cale

Research output: Contribution to journalConference articlepeer-review

41 Scopus citations

Abstract

A back-end-of-the-line (BEOL) compatible wafer-level three-dimensional (3D) IC technology platform using dielectric glue bonding, three-step wafer thinning and copper dual-inlaid inter-wafer interconnects is described. Electrical results before and after bonding and thinning processes are summarized for passive interconnect structures with copper and both oxide and porous low-k interlevel dielectrics (ILDs) and are presented for the first time for 130nm technology node CMOS SOI ICs with four-level copper/low-k interconnects. Results on ring oscillator delay, n-channel and p-channel threshold voltage and gate leakage indicate that changes in electrical parameters are less than one-third of the 10%-90% distribution spread in original parameter values. Via-chain test structure results indicating the viability of such a 3D IC technology platform are summarized, and new results indicating compatibility with conventional die packaging techniques are presented.

Original languageEnglish
Pages (from-to)19-26
Number of pages8
JournalAdvanced Metallization Conference (AMC)
StatePublished - 2003
EventAdvanced Metallization Conference 2003, AMC 2003 - Montreal, Que., Canada
Duration: 21 Oct 200323 Oct 2003

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