2025-05-29 東京科学大学

<関連情報>
バンプレスCOW(Chip-an-Wafer)パッケージのためのワッフルウェハ上のフェースダウンおよび異種チップ接合技術 Face-Down and Heterogeneous Chip Bonding Technology on Waffle-Wafer for Bumpless Chip-an-Wafer (COW) Package
Yoshiaki Satake; Tatsuya Funaki; Wataru Doi; Hajime Kato; Shogo Okita; Takayuki Ohba
2024 International 3D Systems Integration Conference (3DIC) Date of Conference: 25-27 September 2024
DOI:https://doi.org/10.1109/3DIC63395.2024.10830233
Abstract:
A high-speed, manufacturable, fully chiplet integration process using Face-Down bonding to 300 mm waffle-wafer and bumpless Chip-on-Wafer (COW) has been developed for the first time. The inkjet method successfully formed a thin adhesive layer on the bottom of the waffle wafer, with no voids even at a 5 μm adhesive thickness. Over 30,000 chips with a narrow gap of 40 μ m were bonded with a misalignment of less than 10 μ m and a short bonding time of a few milliseconds per chip.


