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Signal Integrity Design of Bump-Less Interconnection for High-Speed Signaling in 2.5D and 3D IC

  • Hyunsuk Lee
  • , Heegon Kim
  • , Sumin Choi
  • , DongHyun Kim
  • , Kyungjun Cho
  • , Joungho Kim

Research output: Contribution to journalArticlepeer-review

Abstract

With the advent of 2.5D and 3D IC, micro bumps has been highlighted as the core technology for realization of 2.5D and 3D IC. However, due to the difficulties about fabrication of reliable and cost-effective micro bumps, resulting in decrease in the final chip yield. In this paper, we propose a bump-less interconnection for high-speed signaling in 2.5D and 3D IC. In the proposed interconnection, high speed signal is transmitted via coupling pads instead of micro bumps. Signal integrity of the proposed interconnection is analyzed by simulation in the frequency- and time-domain. For a more detailed analysis, the proposed interconnection and the interconnection with the micro bumps are compared. In addition, because the silicon, organic and glass interposer have been widely employed for the 2.5D and 3D IC packaging, signal integrity of the proposed interconnection on three types of the interposer is compared and analyzed.

Keywords

  • Busbars
  • Cost effective
  • Cost effectiveness
  • Electromagnetic compatibility
  • Frequency and time domains
  • Frequency domain analysis
  • High-speed signaling
  • High-speed signals
  • IC packaging
  • Integrated circuit interconnects
  • Micro-bumps
  • Signal Integrity, Integrated circuit design
  • Three dimensional integrated circuits, Core technology

Disciplines

  • Electromagnetics and Photonics

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