JP2011165862A - 半導体装置、チップ・オン・チップの実装構造、半導体装置の製造方法及びチップ・オン・チップの実装構造の形成方法 - Google Patents
半導体装置、チップ・オン・チップの実装構造、半導体装置の製造方法及びチップ・オン・チップの実装構造の形成方法 Download PDFInfo
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- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
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- H01L2924/384—Bump effects
- H01L2924/3841—Solder bridging
Abstract
【解決手段】 半導体基板1上にパッド電極2が形成され、パッド電極2上にUBM層7が電解めっきで形成され、UBM層7上にはんだバンプ電極8が電解めっきで形成されてなる半導体装置15からなり、はんだバンプ電極8によって、UBM層7の側面を含む露出面が覆われている半導体装置15。
【選択図】 図1(B)
Description
図1は、本発明の第1の実施の形態による半導体装置(半導体チップ)15の構造を概略的に示すものである。
図6〜図7は、本発明の第2の実施の形態による半導体装置とその製造工程を示すものである。
6、26…フォトレジスト、7…Ni電解めっき層(UBM層)、
8…はんだバンプ電極、8a…Sn電解めっき層、Sn−Ag合金蒸着層、
9…フラックス層、10…Zn層、11…Pd層、13…マスク、14…絶縁膜、
15、15A、15B…半導体装置(半導体チップ)、
16…チップ・オン・チップの実装構造、25…Cu層
Claims (14)
- 半導体基体上にパッド電極が形成され、前記パッド電極上に下地メタル層が形成され、前記下地メタル層上にはんだバンプ電極が形成されてなる半導体チップからなり、前記はんだバンプ電極によって、前記下地メタル層の側面を含む露出面が覆われている半導体装置。
- 前記下地メタル層がアンダーバンプメタル層として機能し、このアンダーバンプメタル層が、前記パッド電極から、このパッド電極を部分的に覆う絶縁膜上にかけて形成されている、請求項1に記載した半導体装置。
- アルミニウムパッド電極上にニッケルアンダーバンプメタル層が形成され、このアンダーバンプメタル層上に錫系はんだバンプ電極が形成されている、請求項2に記載した半導体装置。
- 前記ニッケルアンダーバンプメタル層と前記錫系はんだバンプ電極との接合域に銅系金属薄層が介在している、請求項3に記載した半導体装置。
- 請求項1〜4のいずれか1項に記載した半導体装置の複数個が、前記はんだバンプ電極を介して互いに接合されてなるチップ・オン・チップの実装構造。
- 前記半導体装置の複数個が、フラックスレスで接合されている、請求項5に記載したチップ・オン・チップの実装構造。
- 半導体基体上にパッド電極を形成する工程と、前記パッド電極上に下地メタル層を形成する工程と、前記下地メタル層上にはんだバンプ電極を形成し、この際、前記はんだバンプ電極の構成材料によって前記下地メタル層の側面を含む露出面を覆う工程とを有する、半導体装置の製造方法。
- 前記下地メタル層及び前記はんだバンプ電極の構成材料層を無電解めっきによって順次形成する、請求項7に記載した半導体装置の製造方法。
- 前記下地メタル層を電解めっきによって形成し、前記はんだバンプ電極の構成材料層を無電解めっき又は電解めっきによって形成する、請求項7に記載した半導体装置の製造方法。
- 前記下地メタル層を電解めっきによって形成し、前記はんだバンプ電極の構成材料層を物理的蒸着によって形成する、請求項7に記載した半導体装置の製造方法。
- 前記下地メタル層を前記はんだバンプ電極の構成材料で覆った後に、はんだフラックスの被着下でリフローを行うことによって前記はんだバンプ電極を形成する、請求項7に記載した半導体装置の製造方法。
- 請求項2〜4のいずれか1項に記載した半導体装置を製造する、請求項7に記載した半導体装置の製造方法。
- 請求項7〜11のいずれか1項に記載した製造方法によって得られた半導体装置の複数個を前記はんだバンプ電極を介して互いに接触させ、この状態で加熱及び加圧下で前記はんだバンプ電極を溶融させ、更に固化させることによって、前記半導体装置の複数個を互いに接合させる、チップ・オン・チップの実装構造の形成方法。
- フラックスレス下で前記接合を行う、請求項13に記載したチップ・オン・チップの実装構造の形成方法。
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JP2010026484A JP2011165862A (ja) | 2010-02-09 | 2010-02-09 | 半導体装置、チップ・オン・チップの実装構造、半導体装置の製造方法及びチップ・オン・チップの実装構造の形成方法 |
CN201110035445.XA CN102163578B (zh) | 2010-02-09 | 2011-02-01 | 半导体装置及其制造方法、叠层芯片安装结构及其形成方法 |
US13/018,723 US20110193223A1 (en) | 2010-02-09 | 2011-02-01 | Semiconductor device, chip-on-chip mounting structure, method of manufacturing the semiconductor device, and method of forming the chip-on-chip mounting structure |
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KR102195929B1 (ko) | 2013-01-17 | 2020-12-29 | 노벨러스 시스템즈, 인코포레이티드 | 웨이퍼-레벨-패키징 프로세스 흐름을 위한 전착된 구리의 처리 방법 |
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CN102163578B (zh) | 2015-05-20 |
CN102163578A (zh) | 2011-08-24 |
US20110193223A1 (en) | 2011-08-11 |
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