JP6456494B2 - 半導体装置の製造方法 - Google Patents
半導体装置の製造方法 Download PDFInfo
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- JP6456494B2 JP6456494B2 JP2017520113A JP2017520113A JP6456494B2 JP 6456494 B2 JP6456494 B2 JP 6456494B2 JP 2017520113 A JP2017520113 A JP 2017520113A JP 2017520113 A JP2017520113 A JP 2017520113A JP 6456494 B2 JP6456494 B2 JP 6456494B2
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- solder bonding
- electrode
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Description
本実施の形態に係る半導体装置の製造方法は、第1の主面10Aと、第1の主面10Aの反対側に位置する第2の主面10Bとを有する半導体基板10を準備する工程(S01)と、第1の主面10A上に第1電極11を形成する工程(S02)と、第1電極11上に第1はんだ接合用金属膜21(はんだ接合用金属膜)を形成する工程(S03)と、第1はんだ接合用金属膜21上に犠牲膜23を形成する工程(S04)と、犠牲膜23を形成した後に第2の主面10Bを研削する工程(S06)と、研削する工程(S06)の後に熱処理を行う工程(第3の主面10C側に素子構造を形成する工程(S07))と、熱処理を行う工程(S07)の後に犠牲膜23を除去する工程(S10)と、第1はんだ接合用金属膜21と第1外部電極41とをはんだ接合する工程(S12)とを備える。
Claims (10)
- 半導体素子が形成される予定である第1の主面と、前記第1の主面の反対側に位置する第2の主面とを有する半導体基板を準備する工程と、
前記半導体基板の前記第1の主面側に前記半導体素子の素子構造を形成する工程と、
前記第1の主面上に第1電極を形成する工程と、
前記第1電極上にはんだ接合用金属膜を形成する工程と、
前記はんだ接合用金属膜上に犠牲膜を形成する工程と、
前記犠牲膜を形成した後に前記第2の主面を研削し、第3の主面を面出しする工程と、
前記第3の主面を面出しする工程の後に前記半導体基板に対し熱処理を行う工程と、
前記熱処理を行う工程の後に前記犠牲膜を除去する工程と、
前記はんだ接合用金属膜と外部電極とをはんだ接合する工程とを備え、
前記犠牲膜を構成する材料は、原子番号22以下であり、かつ、前記犠牲膜はアルカリ金属、アルカリ土類金属を含まない元素で構成されている、半導体装置の製造方法。 - 前記犠牲膜を構成する材料は、前記はんだ接合用金属膜と比べてエッチングにより選択的に除去可能な材料である、請求項1に記載の半導体装置の製造方法。
- 前記犠牲膜を構成する材料はチタンおよびアルミニウムの少なくともいずれか一方を含む、請求項1に記載の半導体装置の製造方法。
- 前記はんだ接合用金属膜を構成する材料は、原子番号23以上の金属元素を含む、請求項請求項1〜請求項3のいずれか1項に記載の半導体装置の製造方法。
- 前記はんだ接合用金属膜を構成する材料はニッケルを含む、請求項4に記載の半導体装置の製造方法。
- 前記半導体基板の前記第1の主面上に保護膜を形成する工程を備える、請求項1〜請求項5のいずれか1項に記載の半導体装置の製造方法。
- 前記犠牲膜を除去する工程は、前記保護膜を形成する工程の後に実施される、請求項6に記載の半導体装置の製造方法。
- 前記第3の主面を面出しする工程は、前記保護膜を形成する工程の後に実施される、請求項6または請求項7に記載の半導体装置の製造方法。
- 前記保護膜を構成する材料はポリイミドを含む、請求項6〜請求項8のいずれか1項に記載の半導体装置の製造方法。
- 前記第1電極を構成する材料はアルミニウムを含み、
前記第1電極中のアルミニウムの含有率は95質量%以上である、請求項1〜請求項9のいずれか1項に記載の半導体装置の製造方法。
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US9006887B2 (en) * | 2009-03-04 | 2015-04-14 | Intel Corporation | Forming sacrificial composite materials for package-on-package architectures and structures formed thereby |
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JP5899740B2 (ja) * | 2011-09-19 | 2016-04-06 | 株式会社デンソー | 半導体装置の製造方法 |
JP6360276B2 (ja) | 2012-03-08 | 2018-07-18 | 東京エレクトロン株式会社 | 半導体装置、半導体装置の製造方法、半導体製造装置 |
JP2013187352A (ja) * | 2012-03-08 | 2013-09-19 | Nippon Telegr & Teleph Corp <Ntt> | 半導体装置およびその製造方法 |
JP6120704B2 (ja) * | 2013-07-03 | 2017-04-26 | 三菱電機株式会社 | 半導体装置 |
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