JP3661695B2 - 半導体装置 - Google Patents
半導体装置 Download PDFInfo
- Publication number
- JP3661695B2 JP3661695B2 JP2003273456A JP2003273456A JP3661695B2 JP 3661695 B2 JP3661695 B2 JP 3661695B2 JP 2003273456 A JP2003273456 A JP 2003273456A JP 2003273456 A JP2003273456 A JP 2003273456A JP 3661695 B2 JP3661695 B2 JP 3661695B2
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- Prior art keywords
- electrode
- semiconductor device
- aluminum
- metal
- metal electrode
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Description
図1は、本発明の第1実施形態にかかる半導体装置S1の全体構成を示す概略断面図である。また、図2(a)は、図1中のエミッタ電極2の近傍部の拡大断面図であり、図2(b)は、図2(a)中のAl電極11と金属電極13との界面近傍の拡大断面図である。
本発明の第2実施形態は、エミッタ電極2およびゲート電極3における凹凸形状の形成方法の変形を示すものである。図6は、本実施形態に係るAl電極11および金属電極13の形成方法を断面的に示す工程図であり、保護膜12は省略してある。
図7は、本発明の第3実施形態に係るAl電極11と金属電極13との積層構成を示す概略断面図である。上記実施形態では、金属電極は、メッキにより形成された膜であったが、本実施形態では、金属電極13は、物理的気相成長法(PVD)により形成された膜であることが相違点である。
11b…凹凸形状の凸部、12…保護膜、12a…開口部、
13…金属電極、13a…Niメッキ層、13b…金メッキ層、
20…ヒートシンク。
Claims (10)
- 半導体基板(1)と、
前記半導体基板の一面上に形成されたアルミニウムからなるアルミニウム電極(11)と、
前記アルミニウム電極の上に形成された保護膜(12)と、
前記保護膜に形成された開口部(12a)と、
前記開口部から臨む前記アルミニウム電極の表面上に形成された、はんだ付け用もしくはワイヤボンディング用の金属電極(13)とを備える半導体装置において、
前記開口部から臨む前記アルミニウム電極の表面には、エッチングされてへこんだ凹部(11a)が形成されており、
前記アルミニウム電極のうち前記エッチングにより残った部分における膜厚(d)は、前記凹部の深さ(d’)よりも大きいものであり、
前記アルミニウム電極には、アルミニウムよりも前記エッチングにおけるエッチングレートが小さい材料が設けられており、
前記アルミニウム電極における前記エッチングされた面は、前記エッチングレートが小さい材料にて凸部(11b)が構成された凹凸形状となっていることを特徴とする半導体装置。 - 前記エッチングレートが小さい材料は、前記アルミニウム電極(11)を構成するアルミニウム中に混合されたものであることを特徴とする請求項1に記載の半導体装置。
- 前記エッチングレートが小さい材料は、アルミニウム中に添加されたSiであり、前記凸部(11b)はSiからなることを特徴とする請求項2に記載の半導体装置。
- 前記Siの含有量は、前記アルミニウム電極(11)の全体に対して0.3重量%以上であることを特徴とする請求項3に記載の半導体装置。
- 前記エッチングレートが小さい材料は、前記アルミニウム電極(11)における前記開口部(12a)から臨む表面に部分的に形成されたものであることを特徴とする請求項1に記載の半導体装置。
- 前記金属電極(13)は、メッキにより形成された膜であることを特徴とする請求項1ないし5のいずれか一つに記載の半導体装置。
- 前記金属電極(13)は、前記アルミニウム電極(11)の表面側からニッケルメッキ層(13a)、金メッキ層(13b)が順次無電解メッキにより形成され積層されてなる膜であることを特徴とする請求項6に記載の半導体装置。
- 前記金属電極(13)は、物理的気相成長法により形成された膜であることを特徴とする請求項1ないし5にいずれか一つに記載の半導体装置。
- 前記金属電極(13)は、鉛フリーはんだを用いてはんだ付けされたものであることを特徴とする請求項1ないし8のいずれか一つに記載の半導体装置。
- 前記金属電極(13)は前記鉛フリーはんだを介して金属製のヒートシンク(20)と接合されていることを特徴とする請求項9に記載の半導体装置。
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JP2003273456A JP3661695B2 (ja) | 2003-07-11 | 2003-07-11 | 半導体装置 |
US10/878,435 US7030496B2 (en) | 2003-07-11 | 2004-06-29 | Semiconductor device having aluminum and metal electrodes and method for manufacturing the same |
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JP4604641B2 (ja) * | 2004-10-18 | 2011-01-05 | 株式会社デンソー | 半導体装置 |
TWI257164B (en) * | 2005-04-01 | 2006-06-21 | Cyntec Co Ltd | Package structure having mixed circuit and complex substrate |
EP1947439B1 (en) * | 2005-11-01 | 2012-02-08 | Hitachi, Ltd. | Semiconductor pressure sensor |
JP2007258438A (ja) * | 2006-03-23 | 2007-10-04 | Fujitsu Ltd | 半導体装置及びその製造方法 |
JP5122098B2 (ja) * | 2006-08-11 | 2013-01-16 | 株式会社トクヤマ | メタライズ基板、半導体装置 |
JP2008166432A (ja) * | 2006-12-27 | 2008-07-17 | Sharp Corp | クラックを生じにくい半田接合部、該半田接続部を備える回路基板などの電子部品、半導体装置、及び電子部品の製造方法 |
JP5362719B2 (ja) * | 2008-06-23 | 2013-12-11 | パナソニック株式会社 | 接合構造および電子部品の製造方法 |
JP5638269B2 (ja) | 2010-03-26 | 2014-12-10 | 日本特殊陶業株式会社 | 多層配線基板 |
JP5566771B2 (ja) * | 2010-05-18 | 2014-08-06 | 日本特殊陶業株式会社 | 多層配線基板 |
US8492896B2 (en) * | 2010-05-21 | 2013-07-23 | Panasonic Corporation | Semiconductor apparatus and semiconductor apparatus unit |
JP5855361B2 (ja) * | 2011-05-31 | 2016-02-09 | 三菱電機株式会社 | 半導体装置 |
US8907485B2 (en) | 2012-08-24 | 2014-12-09 | Freescale Semiconductor, Inc. | Copper ball bond features and structure |
JP6015239B2 (ja) * | 2012-08-24 | 2016-10-26 | Tdk株式会社 | 端子構造、並びにこれを備える半導体素子及びモジュール基板 |
JP5673650B2 (ja) * | 2012-10-24 | 2015-02-18 | 株式会社村田製作所 | 電子部品 |
JP6610577B2 (ja) * | 2017-02-10 | 2019-11-27 | トヨタ自動車株式会社 | 半導体装置 |
JP6897141B2 (ja) * | 2017-02-15 | 2021-06-30 | 株式会社デンソー | 半導体装置とその製造方法 |
JP2020009823A (ja) | 2018-07-04 | 2020-01-16 | 三菱電機株式会社 | 半導体装置及び半導体装置の製造方法 |
WO2020144790A1 (ja) * | 2019-01-10 | 2020-07-16 | 三菱電機株式会社 | 電力用半導体装置 |
JP2022045072A (ja) * | 2020-09-08 | 2022-03-18 | 株式会社東芝 | 半導体装置 |
KR20220090793A (ko) | 2020-12-23 | 2022-06-30 | 삼성전자주식회사 | 반도체 패키지 |
JP7567702B2 (ja) | 2021-07-16 | 2024-10-16 | 株式会社デンソー | 半導体装置 |
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JPS56153322A (en) | 1980-04-28 | 1981-11-27 | Seiko Epson Corp | Reflection type liquid-crystal display device using semiconductor substrate |
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JPS5787139A (en) * | 1980-11-19 | 1982-05-31 | Hitachi Ltd | Semiconductor device |
JPS63305532A (ja) | 1987-06-05 | 1988-12-13 | Toshiba Corp | バンプの形成方法 |
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