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Heterogeneous System Integration of Flexible Electronics Based on Multi-Scale Stress Engineering

Research Project

Project/Area Number 19KK0101
Research Category

Fund for the Promotion of Joint International Research (Fostering Joint International Research (B))

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 21:Electrical and electronic engineering and related fields
Research InstitutionTohoku University

Principal Investigator

Fukushima Takafumi  東北大学, 工学研究科, 准教授 (10374969)

Co-Investigator(Kenkyū-buntansha) マリアッパン ムルゲサン  東北大学, 未来科学技術共同研究センター, 学術研究員 (10509699)
木野 久志  東北大学, 医工学研究科, 特任准教授 (10633406)
清山 浩司  長崎総合科学大学, 工学研究科, 教授 (60412722)
Project Period (FY) 2019-10-07 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥18,330,000 (Direct Cost: ¥14,100,000、Indirect Cost: ¥4,230,000)
Fiscal Year 2022: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2021: ¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2020: ¥5,850,000 (Direct Cost: ¥4,500,000、Indirect Cost: ¥1,350,000)
Fiscal Year 2019: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Keywordsフレキシブルデバイス / 半導体パッケージ / チップレット / 応力制御 / 材料力学 / マイクロLEDディスプレイ / 3D-IC / FOWLP / 常温接合 / FHE / 人工網膜 / 三次元実装 / TSV / 無線給電 / 埋め込みデバイス / 応力解析 / 応力エンジニアリング / ウエハレベルパッケージ / PDMS / マイクロXRD / 応力 / 高分子材料 / フレキシブルコイル
Outline of Research at the Start

本研究の高集積FHEでは、厚さ100μm程の微小Siチップ(チップレット)をエラストマーに埋め込み、ウエハレベルで高密度配線を形成してチップ間を接続する集積形態をとり、フレキシブルデバイスの性能とスケーラビリティを格段に高めることができる。本研究では、分子レベル、材料レベル、システムレベルの階層的なマルチスケール応力エンジニアリングを駆使し、機械的/電気的信頼性を解析してこの高集積FHEの有用性を工学的に体系化する。我々のSi貫通配線(TSV)を用いた三次元積層チップ(3D-IC)技術とUCLAのシステム集積技術を融合させ、我々の高集積フレキシブル人工網膜システムを動物実験にまで到達させる。

Outline of Final Research Achievements

The highly integrated FHE in this research adopts an integration configuration in which tiny Si chips (chiplets) about 100μm thick are embedded in elastomers and interconnected by high-density wiring at the wafer level to systematize a structure that dramatically improves the performance and scalability of flexible devices. In particular, we will demonstrate the effectiveness of this highly integrated FHE by analyzing the mechanical/electrical reliability and reducing stress through finite element method calculations and experimental verification of hierarchical multi-scale stress at the molecular, material, and system levels.

Academic Significance and Societal Importance of the Research Achievements

従来の半導体システムのボトルネックとなっているプリント基板(フレキシブルプリント配線板を含む)の課題を克服し、システム全体としてみた性能や効率を学問として捉えた集積学の開拓が必要である。ここでは国際共同研究を通してフレキシブルデバイスシステムに要求される仕様を理解し、材料や構造、回路に反映するために必要なシステム集積学を追求する。特に、機能ブロックを分割してチップをチップレットにするSystem-Level Chip Partitioning技術は、高集積FHEの高信頼性化に非常に有益な技術となる。

Report

(6 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (37 results)

All 2024 2023 2022 2021 2020 2019 Other

All Int'l Joint Research (3 results) Journal Article (4 results) (of which Peer Reviewed: 3 results,  Open Access: 1 results) Presentation (28 results) (of which Int'l Joint Research: 18 results,  Invited: 12 results) Book (1 results) Patent(Industrial Property Rights) (1 results) (of which Overseas: 1 results)

  • [Int'l Joint Research] UCLA(米国)

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] UCLA(米国)

    • Related Report
      2020 Research-status Report
  • [Int'l Joint Research] UCLA(米国)

    • Related Report
      2019 Research-status Report
  • [Journal Article] * Bendability Enhancement of 3D Interconnections with Out-of-plane Corrugation for Flexible Hybrid Electronics2024

    • Author(s)
      Chang Liu, Tadaaki Hoshi, Jiayi Shen, Atsushi Shinoda, Hisashi Kino, Tetsu Tanaka, and Takafumi Fukushima
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: 63

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Laue microdiffraction evaluation of bending stress in Au wiring formed on chip-embedded flexible hybrid electronics2021

    • Author(s)
      M. Mariappan, Y. Susumago, K. Sumitani, Y. Imai, S. Kimura, T. Fukushima
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: 60 Issue: SB Pages: SBBC02-SBBC02

    • DOI

      10.35848/1347-4065/abdb81

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Significant Die-Shift Reduction and μLED Integration Based on Die-First Fan-Out Wafer-Level Packaging for Flexible Hybrid Electronics2020

    • Author(s)
      Takafumi Fukushima , Yuki Susumago, Zhengyang Qian, Chidai Shima, Bang Du, Noriyuki Takahashi, Shuta Nagata, Tomo Odashima, Hisashi Kino, and Tetsu Tanaka,
    • Journal Title

      IEEE TRANSACTIONS ON COMPONENTS, PACKAGING AND MANUFACTURING TECHNOLOGY

      Volume: 10 Issue: 8 Pages: 1419-1422

    • DOI

      10.1109/tcpmt.2020.3009640

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] A new DSA technological dawn2020

    • Author(s)
      Takafumi Fukushima
    • Journal Title

      Impact

      Volume: February Issue: SG Pages: 1-3

    • DOI

      10.35848/1347-4065/ab75b8

    • Related Report
      2019 Research-status Report
  • [Presentation] * 3D Interconnect Technology with Serpentine and Trapezoidal Corrugation Using a Flexible Photosensitive Dielectric to Strengthen the Bendability of FHE2024

    • Author(s)
      C. Liu, J. Shen, A. Shinoda, H. Zhang, T. Tanaka, and T. Fukushima
    • Organizer
      Proceedings of the 73rd Electronic Components and Technology Conference (ECTC 2024)
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] * High-Bendable 3D Corrugated Interconnections for Chiplet-Embedded Flexible Hybrid Electronics Using Wafer-Level Packaging2023

    • Author(s)
      Chang Liu, Tadaaki Hoshi, Jiayi Shen, Atsushi Shinoda, Zehua Du, Hisashi Kino, Tetsu Tanaka, and Takafumi Fukushima
    • Organizer
      Extended Abstracts of the 2022 International Conference on Solid State Devices and Materials (SSDM)
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Flexible FOWLP-based 3D Heterogeneous Integration for Biomedical/Healthcare FHE Application2023

    • Author(s)
      Takafumi Fukushima
    • Organizer
      Materials Research Society-Taiwan International Conference (2023 MRSTIC)
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] High-Bendable 3D Corrugated Interconnections for Chiplet-Embedded Flexible Hybrid Electronics (FHE) Using Wafer-Level Packaging2023

    • Author(s)
      Chang Liu, Tadaaki Hoshi, Jiayi Shen, Atsushi Shinoda, Zehua Du, Hisashi Kino, Tetsu Tanaka, and Tak Fukushima
    • Organizer
      The 4th UCLA CHIPS Workshop (CHIPS: Center for Heterogeneous Integration and Performance Scaling
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] A Finite Element Study of Stretchable Corrugated Interconnections on Chiplet-Embedded Flexible Hybrid Electronics2022

    • Author(s)
      Chang Liu, Hisashi Kino, Tetsu Tanaka, and Takafumi Fukushima
    • Organizer
      Flex2022 (2022)
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] Simulation and Experimental Study of Stretchable 3D Corrugated Interconnections for Chiplet- Embedded Flexible Hybrid Electronics Using Wafer-Level Packaging2022

    • Author(s)
      Liu Chang, Yuki Susumago, Tadaaki Hoshi, Hisashi Kino, Tetsu Tanaka, and Takafumi Fukushima
    • Organizer
      2022 International Conference on Solid State Devices and Materials (SSDM), 715-716(2022)
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] In-mold Flexible Hybrid Electronics (iFHE) Based on Holistic System Integration with FOWLP, 3D-IC/TSV, and Chiplets2022

    • Author(s)
      Takfumi Fuksuhima
    • Organizer
      The 20th International Symposium on the Physics of Semiconductors and Applications (ISPSA 2022), Session 8. Industrial semiconductor applications (ISA),
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 新たな実装技術で創るフレキシブルデバイス「インモールド・フレキシブル・ハイブリッド・エレクトロニクス(iFHE)」2022

    • Author(s)
      福島 誉史
    • Organizer
      一般社団法人日本電子回路工業会(JPCA)主催「電子機器トータルソリューション展2022 (旧JPCA Show 2022)
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 埋込型医療機器向け無線給電の設計2022

    • Author(s)
      清山 浩司, 福島 誉史, 木野 久志, 田中 徹
    • Organizer
      2022年度 電子情報通信学会総合大会
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] 三次元実装/TSV を基盤とした ヘテロインテグレーション技術の研究開発動向2022

    • Author(s)
      福島 誉史
    • Organizer
      2022年度 電子情報通信学会総合大会
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] Wafer-Level Flexible 3D Corrugated Interconnect Formation for Scalable In-Mold Electronics with Embedded Chiplets2021

    • Author(s)
      Tomo Odashima, Yuki Susumago, Shuta Nagata, Hisashi Kino, Tetsu Tanaka, and T. Fukushima
    • Organizer
      Proceedings of the 71st Electronic Components and Technology Conference (ECTC 2021)
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] チップレット内蔵インモールドエレクトロニクス用フレキシブル基板の細線化2021

    • Author(s)
      小田島 輩, 煤孫 祐樹, 王 喆, 木野 久志, 田中 徹, 福島 誉史
    • Organizer
      第82回応用物理学会秋季学術講演会
    • Related Report
      2021 Research-status Report
  • [Presentation] Heterogeneous, 3D, & Flexible System Integration Technology Based on Chiplet-on-Wafer Assembly2021

    • Author(s)
      福島 誉史
    • Organizer
      電子実装工学研究所(IMSI)接合界面創成技術研究会(LTB-3D 研究会 旧学振191研究会)
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] Chiplet-Based Advanced Packaging Technology from 3D/TSV to FOWLP/FHE2021

    • Author(s)
      福島 誉史
    • Organizer
      IEEE Solid-State Circuits Society (SSCS) Kansai Chapter 主催「2021 Symposia on VLSI Technology 国内報告会」
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] ホリスティック・システム・インテグレーションに向けた三次元実装の技術動向と課題2021

    • Author(s)
      福島 誉史
    • Organizer
      エレクトロニクス実装学会(JIEP) 先端ファブリケーション研究会主催 第8回公開研究会
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] Die-first and RDL-first FOWLP Processing for Flexible Hybrid Electronics2021

    • Author(s)
      Takafumi Fukushima, Yuki Susumago, Noriyuki Takahashi, Hisashi Kino, and Tetsu Tanaka
    • Organizer
      IMAPS (International Microelectronics Assembly and Packaging Society) 17th International Conference on Device Packaging, 2021
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] チップレットを基盤とした三次元集積の技術動向とフレキシブルデバイスの高集積化2021

    • Author(s)
      福島 誉史
    • Organizer
      システムデバイスロードマップ委員会(SDRJ)主催 2021年度第4回Beyond CMOS & More Than Moore合同委員会
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] Flexible In-Mold Electronics: Advanced FHE Technologies and Applications2021

    • Author(s)
      Takafumi Fukushima
    • Organizer
      2021FLEX
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 3-Color Micro-LED Integration for Flexible Display Based on Die-First Fan-Out Wafer-Level Packaging Technology2021

    • Author(s)
      Zhe Wang, Yuki Susumago, Tomo Odashima, Noriyuki Takahashi, Hisashi Kino, Tetsu Tanaka, Takafumi Fukushima
    • Organizer
      第68回応用物理学会春季学術講演予稿集
    • Related Report
      2020 Research-status Report
  • [Presentation] UV-LED内蔵ハイドロゲルフレキシブル基板を用いた殺菌絆創膏の作製と評価2021

    • Author(s)
      高橋 則之, 煤孫 祐樹, 王 喆, 小田島 輩, 木野 久志, 田中 徹, 福島 誉史
    • Organizer
      第68回応用物理学会春季学術講演予稿集
    • Related Report
      2020 Research-status Report
  • [Presentation] Wafer-Level 3D Wrinkling Interconnect Formation for Scalable Flexible In-Mold Electronics2021

    • Author(s)
      Shuta Nagata and Takafumi Fukushima
    • Organizer
      Flex2021
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] Hydrogel-Based FHE Patch Using RDL-first FOWLP for UV Sterilization2021

    • Author(s)
      Noriyuki Takahashi and Takafumi Fukushima
    • Organizer
      Flex2021
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] RDL-first Flexible FOWLP Technology with Dielets Embedded in Hydrogel2020

    • Author(s)
      N. Takahashi, Y. Susumago, S. Lee, H. Kino, T. Tanaka, and T. Fukushima,
    • Organizer
      The 69th Electronic Components and Technology Conference (ECTC 2020)
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] Evaluation of bending stress in Au-wiring formed over FHE by micro-XRD2020

    • Author(s)
      M. Murugesan, Y. Susumago, T. Odashima, H. Kino, T. Tanaka, K. Sumitani, Y. Imai, S. Kimura, and T. Fukushima
    • Organizer
      The 2020 International Conference on Solid State Devices and Materials (SSDM)
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] Micro-LED and PPG Sensor Integration Using Flexible Fan-Out Wafer-Level Packaging for Trans-Nail Pulse-Wave/SpO2 Monitoring2020

    • Author(s)
      Tomo Odashima, Yuki Susumago, Qian Zhengyang, Noriyuki Takahashi, Shuta Nagata, Hisashi Kino, Tetsu Tanaka, and Takafumi Fukushima
    • Organizer
      The 2020 International Conference on Solid State Devices and Materials (SSDM)
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] 先端ウエハレベルパッケージング技術による新構造FHEの開発2020

    • Author(s)
      福島誉史
    • Organizer
      コンバーティングテクノロジー総合展2020」新機能性材料展 / JFlex / 3次元表面加飾技術展 セミナー
    • Related Report
      2019 Research-status Report
  • [Presentation] Multilithic 3D and Heterogeneous Integration Using Capillary Self-Assembly2020

    • Author(s)
      Takafumi Fukushima
    • Organizer
      4th IEEE Electron Devices Technology and Manufacturing Conference (EDTM)
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] FOWLP-based Flexible Hybrid Sensor Systems with Dieletsand 3D-IC2019

    • Author(s)
      Takafumi Fukushima
    • Organizer
      The 18th International Symposium on Microelectronics and Packaging and 21st International Conference on Electronic Materials and Packaging (ISMP-EMAP 2019)
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Book] 次世代ウェアラブルデバイスに向けたフレキシブル・伸縮性エレクトロニクス技術とセンサ開発 執筆担当部分: 第2章 フレキシブル・伸縮性センサ・デバイス・システムの開発動向, 第9節 高集積フレキシブル・ハイブリッド・エレクトロニクス(FHE)技術2024

    • Author(s)
      福島誉史
    • Total Pages
      19
    • Publisher
      Science & Technology
    • Related Report
      2023 Annual Research Report
  • [Patent(Industrial Property Rights)] 東北大学, 半導体装置の製造方法、半導体装置を備えた装置の製造方法、半導体装置、半導体装置を備えた装置2020

    • Inventor(s)
      福島誉史, 田中徹, 木野久志, 煤孫祐樹
    • Industrial Property Rights Holder
      福島誉史, 田中徹, 木野久志, 煤孫祐樹
    • Industrial Property Rights Type
      特許
    • Filing Date
      2020
    • Related Report
      2020 Research-status Report
    • Overseas

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Published: 2019-10-10   Modified: 2025-01-30  

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