JP2012019148A - 固体撮像装置用の部材および固体撮像装置の製造方法 - Google Patents
固体撮像装置用の部材および固体撮像装置の製造方法 Download PDFInfo
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Abstract
【解決手段】 光電変換素子が主面に配された第1基板と第1配線構造とを準備する工程と、周辺回路の一部が主面に配された第2基板と第2配線構造とを準備する工程と、第1基板、第1配線構造、第2配線構造、第2基板とがこの順に配置されるように接合する工程と、を有する。そして、少なくとも第1配線構造の上面あるいは第2配線構造の上面のいずれかに凹部が配置され、凹部の底面は導電体が配されている。
【選択図】 図1
Description
302 周辺回路部
308 第1部材
309 第2部材
149 第1配線構造
150 第2配線構造
311 接合部
312 パッド部
313 パッド
101 第1基板
121 第2基板
100 開口
X 接合面
Claims (15)
- 光電変換素子が主面に配された第1基板と、前記第1基板の主面の上に配された第1配線構造とを準備する工程と、
前記光電変換素子の電荷に基づく信号を読み出すための読み出し回路および制御回路を含む周辺回路の一部が主面に配された第2基板と、前記第2基板の主面の上に配された第2配線構造とを準備する工程と、
前記第1基板と、前記第1配線構造と、前記第2配線構造と、前記第2基板とがこの順に配置されるように接合する工程と、を有する固体撮像装置の製造方法において、
少なくとも前記第1配線構造の上面あるいは前記第2配線構造の上面のいずれかに凹部が配置され、
前記凹部の底面は導電体が配されていることを特徴とする固体撮像装置の製造方法。 - 前記第1基板と、前記第1配線構造とを準備する工程は、
前記第1配線構造の上面を構成する第1絶縁膜を形成する工程と、
前記第1配線構造の上面を構成する導電体からなる第1接合部を形成する工程と、
前記第1配線構造の上面に前記凹部を形成する工程と、を有する請求項1に記載の固体撮像装置の製造方法。 - 前記第1配線構造の上面に前記凹部を形成する工程は、前記第1接合部の一部を除去する工程を含むことを特徴とする請求項2に記載の固体撮像装置の製造方法。
- 前記第1配線構造の上面に前記凹部を形成する工程は、前記第1接合部に接する前記第1絶縁膜の一部を除去する工程を含むことを特徴とする請求項3に記載の固体撮像装置の製造方法。
- 前記第2基板と、前記第2配線構造とを準備する工程は、
前記第2配線構造の上面を構成する第2絶縁膜を形成する工程と、
前記第2配線構造の上面を構成する導電体からなる第2接合部を形成する工程と、
前記第2配線構造の上面に前記凹部を形成する工程と、を有する請求項1乃至4のいずれか1項に記載の固体撮像装置の製造方法。 - 前記第2配線構造の上面に前記凹部を形成する工程は、前記第2接合部の一部を除去する工程を含むことを特徴とする請求項5に記載の固体撮像装置の製造方法。
- 前記第2配線構造の上面に前記凹部を形成する工程は、前記第2接合部に接する前記第2絶縁膜の一部を除去する工程を含むことを特徴とする請求項6に記載の固体撮像装置の製造方法。
- 前記第1接合部は、銅を主成分とすることを特徴とする請求項2乃至4のいずれか1項に記載の固体撮像装置の製造方法。
- 前記第2接合部は、銅を主成分とすることを特徴とする請求項5乃至7のいずれか1項に記載の固体撮像装置の製造方法。
- 前記接合させる工程の前に、前記第1配線構造の上面及び前記第2配線構造の上面にプラズマを照射することを特徴とする請求項1乃至9のいずれか1項に記載の固体撮像装置の製造方法。
- 前記接合させる工程は、真空あるいは不活性ガスの雰囲気中において行うことを特徴とする請求項1乃至10のいずれか1項に記載の固体撮像装置の製造方法。
- 前記第2基板に、前記光電変換素子の電荷に基づく信号を出力するための増幅トランジスタと、前記光電変換素子の電荷をリセットするためのリセットトランジスタとを形成する工程を有することを特徴とする請求項1乃至11のいずれか1項に記載の固体撮像装置。
- 光電変換素子と、前記光電変換素子の電荷を転送する転送トランジスタとが主面に配された基板と、
前記基板の主面の上に配され、絶縁膜と接合部とを有する配線構造と、を有する固体撮像装置用の部材において、
前記配線構造の上面は、前記絶縁膜の上面と前記接合部の上面とを含み、
前記配線構造の上面において、前記接合部は凹んでいることを特徴とする固体撮像装置用の部材。 - 光電変換素子の電荷に基づく信号を読み出すための読み出し回路および制御回路を含む周辺回路部の一部が主面に配された基板と、
前記基板の主面の上に配され、絶縁膜と接合部とを有する配線構造と、を有する固体撮像装置用の部材において、
前記配線構造の上面は、前記絶縁膜の上面と前記接合部の上面とを含み、
前記配線構造の上面において、前記接合部は凹部でいることを特徴とする固体撮像装置用の部材。 - 光電変換素子と、前記光電変換素子の電荷を転送する転送トランジスタとが主面に配された第1基板と、
前記第1基板の主面の上に配され、第1絶縁膜と第1接合部を含む第1配線構造と、
前記光電変換素子の電荷に基づく信号を読み出すための読み出し回路および制御回路を含む周辺回路部の一部が主面に配された第2基板と、
前記第2基板の主面の上に配され、第2絶縁膜と第2接合部を含む第2配線構造と、を有し、
前記第1基板と、前記第1配線構造と、前記第2配線構造と、前記第2基板とがこの順に配置された固体撮像装置の製造方法において、
前記第1絶縁膜および第1接合部を前記第1基板の上に形成する工程と、
前記第2絶縁膜および第2接合部を前記第2基板の上に形成する工程と、を有し、
前記第1絶縁膜および第1接合部を前記第1基板の上に形成する工程と、前記第2絶縁膜および第2接合部を前記第2基板の上に形成する工程の少なくともいずれかの工程において、
前記第1基板の主面を基準に前記第1接合部の上面が前記第1絶縁膜の上面よりも低い、あるいは前記第2基板の主面を基準に前記第2接合部の上面が前記第2絶縁膜の上面よりも低い、あるいは前記第1基板の主面を基準に前記第1接合部の上面が前記第1絶縁膜の上面よりも低く、前記第2基板の主面を基準に前記第2接合部の上面が前記第2絶縁膜の上面よりも低いことを特徴とする固体撮像装置の製造方法。
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US11843023B2 (en) | 2023-12-12 |
US20190096931A1 (en) | 2019-03-28 |
US20130105663A1 (en) | 2013-05-02 |
US20230075728A1 (en) | 2023-03-09 |
US11545519B2 (en) | 2023-01-03 |
WO2012004964A1 (en) | 2012-01-12 |
US10263034B2 (en) | 2019-04-16 |
US20150287755A1 (en) | 2015-10-08 |
JP5517800B2 (ja) | 2014-06-11 |
US10651231B2 (en) | 2020-05-12 |
US20240088196A1 (en) | 2024-03-14 |
US9704915B2 (en) | 2017-07-11 |
US9093350B2 (en) | 2015-07-28 |
US20200243584A1 (en) | 2020-07-30 |
US20170271387A1 (en) | 2017-09-21 |
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