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Development of low temperature low pressure large area heat resistant bonding technology

Research Project

Project/Area Number 19K15046
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 21060:Electron device and electronic equipment-related
Research InstitutionOsaka University

Principal Investigator

Chen Chuantong  大阪大学, 産業科学研究所, 特任准教授(常勤) (50791703)

Project Period (FY) 2019-04-01 – 2023-03-31
Project Status Discontinued (Fiscal Year 2022)
Budget Amount *help
¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Fiscal Year 2022: ¥130,000 (Direct Cost: ¥100,000、Indirect Cost: ¥30,000)
Fiscal Year 2021: ¥390,000 (Direct Cost: ¥300,000、Indirect Cost: ¥90,000)
Fiscal Year 2020: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2019: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Keywordsアルミシート接合 / パワーモジュール / パワー半導体 / 高温信頼性 / SiCパワーモジュール / 大面積接合 / 成膜プロセス / ダイアタッチ接合 / ヒーロク / Alシート / SiCダイアタッチ / 信頼性評価 / 低温低加圧
Outline of Research at the Start

自動車用インバータ装置をはじめとする高温環境で使用される電子機器では、さらに小型化省エネルギー化の進展に伴い、SiC等半導体チップの大面積接合技術が必要となる。250℃を超える高温領域温度範囲で動作を保証するために、耐熱性と放熱性を兼ね備えた実装材料の革新が必要になる。本研究では最高250℃までの動作を保証するSiCダイアタッチのための安価なCuまたはAlシートで大面積接合技術を開発し、高度なナノレベルの観察技術・非破壊検査技術・シミュレーション技術などの学術基盤を基に、モジュールの試作及び解析により高い信頼性と優位性を証明し、実用化を図り高電力デバイス組立て技術の発展に寄与する。

Outline of Final Research Achievements

Electronic devices used in high-temperature environments, such as automotive inverters, require large-area bonding technology for semiconductor chips such as SiC as they become more compact and energy-saving. In order to guarantee operation in the high-temperature region temperature range exceeding 250°C, it is necessary to innovate mounting materials that combine heat resistance and heat dissipation. In this research, we developed a large area bonding technology with inexpensive Cu or Al sheets for SiC die attach that guarantees operation up to 250℃. A large area bonding of 10 mm square SiC has a bonding strength of 31.5 MPa. It proved to be highly reliable and superior to other die attach joints. Albonded substrates are powerful because they are excellent in stress relaxation ability due to the softness of Al material, and thus they are also expected to have a great stress-relaxation effect as an intermediate layer.

Academic Significance and Societal Importance of the Research Achievements

本提案の直接的成果は、先進半導体を多く用いる領域でニーズが高まっている高温環境下(250℃以上)で動作可能な高温ワイドバンドギャップ(WBG)高温WBG半導体素子実装材料として、焼結材料のコストを削減すると同時に参加問題を解決し、関連するプロセスにもイノベーションを波及させることが可能であることが強みである。半導体材料としての焼結材料のイノベーションは、世界が求めるパワーモジュール実現のコア技術となるため、豊富な展開可能性を秘めていると考えられる。また、本技術が実現・展開することによるモジュールの電力削減などのアウトカムは、確実にSDGs項目への貢献に繋がる。

Report

(4 results)
  • 2022 Final Research Report ( PDF )
  • 2021 Annual Research Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (10 results)

All 2022 2021 2020 2019 Other

All Journal Article (3 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 3 results,  Open Access: 2 results) Presentation (4 results) (of which Int'l Joint Research: 3 results) Book (1 results) Remarks (2 results)

  • [Journal Article] Thermal fatigue behaviors of SiC power module by Ag sinter joining under harsh thermal shock test2022

    • Author(s)
      Chuantong Chen, Hao Zhang, Jinting Jiu, Xu Long, Katsuaki Suganuma
    • Journal Title

      China welding

      Volume: 31 Pages: 15-21

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Fatigue-Resistant of Ag Sinter Joining on Ni-P/Pd/Au Finished DBA Substrate with Thick Ni-P Layer During Thermal Shock Test2022

    • Author(s)
      Chuantong Chen,Katsuaki Suganuma
    • Journal Title

      ECS Transactions

      Volume: 108 Pages: 21-26

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Low temperature SiC die-attach bonding technology by hillocks generation on Al sheet surface with stress self-generation and self-release2020

    • Author(s)
      Chuantong Chen, Katsuaki Suganuma
    • Journal Title

      Scientific reports

      Volume: 10 Issue: 1 Pages: 9042-9042

    • DOI

      10.1038/s41598-020-66069-8

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Micro-flake Ag paste sinter joining on bare DBA substrate for high temperature SiC power modules2022

    • Author(s)
      Chuantong Chen, Zheng Zhang, Yang Liu, Katsuaki Suganuma
    • Organizer
      2022 International Conference on Electronics Packaging (ICEP)
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Novel approach of die attach technology for SiC power module by pure Al thin film bonding2021

    • Author(s)
      Chuantong Chen,Katsuaki Suganuma
    • Organizer
      2021 International Conference on Electronics Packaging
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] SiCパワーモジュール向けの新型アルミ膜ダイアタッチ接合技術2020

    • Author(s)
      陳 伝とう;・菅原 徹・菅沼 克昭
    • Organizer
      第 33 回(2020 年)セラミックス秋季シンポジウム
    • Related Report
      2020 Research-status Report
  • [Presentation] Die attach module by Cu sheet interconnect for high temperature applications2019

    • Author(s)
      Chuantong Chen, Dongjin Kim, Zheng Zhang, Katsuaki Suganuma
    • Organizer
      20th International Conference on Electronic Materials and Packaging (EMAP)
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Book] Sic Power Module Design: Performance, Robustness and Reliability2022

    • Author(s)
      Chuantong Chen, Katsuaki Suganuma
    • Total Pages
      300
    • Publisher
      Inst of Engineering & Technology
    • ISBN
      9781785619076
    • Related Report
      2021 Annual Research Report
  • [Remarks] Chuantong CHEN

    • URL

      https://researchmap.jp/chenchuantong

    • Related Report
      2021 Annual Research Report
  • [Remarks] 大阪大学フレキシブル3D実装協働研究所

    • URL

      https://www.f3d.sanken.osaka-u.ac.jp/

    • Related Report
      2021 Annual Research Report

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Published: 2019-04-18   Modified: 2024-01-30  

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