JP4409348B2 - 半導体装置およびその製造方法 - Google Patents
半導体装置およびその製造方法 Download PDFInfo
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- JP4409348B2 JP4409348B2 JP2004129251A JP2004129251A JP4409348B2 JP 4409348 B2 JP4409348 B2 JP 4409348B2 JP 2004129251 A JP2004129251 A JP 2004129251A JP 2004129251 A JP2004129251 A JP 2004129251A JP 4409348 B2 JP4409348 B2 JP 4409348B2
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- Prior art keywords
- electrode
- metal wire
- chip
- wire
- semiconductor device
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- 238000004519 manufacturing process Methods 0.000 title claims description 7
- 229910052751 metal Inorganic materials 0.000 claims description 162
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- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
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- 229910052802 copper Inorganic materials 0.000 description 1
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Description
すなわち、第2の金属ワイヤが第1の金属ワイヤよりも長くなるように構成してもよいし、あるいは第1の金属ワイヤおよび第2の金属ワイヤを、それぞれ異なる材料で構成してもよい。さらに択一的には、第2の金属ワイヤと第2の電極との間の接合面、および童2の金属ワイヤとチップ電極との間の接合界面の少なくとも一方に接合強度を低減するための皮膜を形成してもよい。
さらに、前記第2の金属ワイヤと前記第2の電極との接合面積および前記第2の金属ワイヤと前記チップ電極との間の接合面積の少なくとも一方を、接合強度を低減するため、前記第1の金属ワイヤと前記第1の電極との接合面積および前記第1の金属ワイヤと前記チップ電極との問の接合面積より小さく形成してもよい。
さらに、前記第2の金属ワイヤと前記第2の電極との接合界面および前記第2の金属ワイヤと前記チップ電極との間の接合界面の少なくとも一方が、接合強度を低減するため一部にくびれを有する形状であってもよい。
図1ないし図5を参照しながら、本発明に係るパワーモジュール(電力用半導体装置)の実施の形態1について以下に説明する。図1に示すパワーモジュール1は、概略、良好な熱伝導性を有する銅などの金属板からなる金属ベース板5と、金属ベース板5上に固定された樹脂などの絶縁材料からなるケース6と、金属ベース板5上に半田などの導電性接着剤7を介して固着された両主面に金属パターン(図示せず)を有する絶縁基板8と、を備える。また、パワーモジュール1は、ケース6の上面から内部に延びる一対の主電極10,11と、絶縁基板8の上に半田などの導電性接着剤9を介して固着された絶縁ゲート型バイポーラトランジスタ(IGBT)などの半導体チップ20と、を有する。また、半導体チップ20は、チップ電極22を有する(図2参照)。
図6を参照しながら、本発明に係るパワーモジュールの実施の形態2について以下に説明する。実施の形態2のパワーモジュール2は、実施の形態1では外部に設けられた制御回路部を内蔵した点を除き、実施の形態1のパワーモジュール1と同様の構成を有するので、重複する部分に関する詳細な説明を省略する。
変形例1のパワーモジュール1は、図8に示すように、通常の金属ワイヤ12よりも小さい径を有する(より細い)ダミー金属ワイヤ32を用いる点を除いて、実施の形態1のパワーモジュール1と同様の構成を有するので、重複する部分に関する詳細な説明を省略する。
変形例2のパワーモジュール1は、図9に示すように、通常の金属ワイヤ12よりも長いダミー金属ワイヤ32を用いる点を除いて、実施の形態1のパワーモジュール1と同様の構成を有するので、重複する部分に関する詳細な説明を省略する。
変形例3のパワーモジュール1は、通常の金属ワイヤ12とダミー金属ワイヤ32が互いに異なる材料組成を用いて形成される点を除いて、実施の形態1のパワーモジュール1と同様の構成を有するので、重複する部分に関する詳細な説明を省略する。
変形例4のパワーモジュール1は、図10のハッチングで示すように、ダミー金属ワイヤ32が接合されるダミー電極30またはチップ電極22の一部の領域の上に、接合強度を低減するような皮膜34a,34bを形成する点を除いて、実施の形態1のパワーモジュール1と同様の構成を有するので、重複する部分に関する詳細な説明を省略する。
Claims (9)
- 半導体装置であって、
絶縁基板と、
前記絶縁基板上に実装されたチップ電極を含む半導体チップと、
主電流を流す第1の金属ワイヤを介して、前記チップ電極と電気的に接続された第1の電極と、
前記第1の金属ワイヤより断線しやすい第2の金属ワイヤを介して、前記チップ電極と電気的に接続された第2の電極と、を備え、
前記第2の金属ワイヤと前記第2の電極との接合面積および前記第2の金属ワイヤと前記チップ電極との間の接合面積の少なくとも一方が、前記第1の金属ワイヤと前記第1の電極との接合面積および前記第1の金属ワイヤと前記チップ電極との間の接合面積より小さく形成され、
前記第2の金属ワイヤの断線を示す電気信号を前記第2の電極が出力することを特徴とする半導体装置。 - 半導体装置であって、
絶縁基板と、
前記絶縁基板上に実装されたチップ電極を含む半導体チップと、
主電流を流す第1の金属ワイヤを介して、前記チップ電極と電気的に接続された第1の電極と、
前記第1の金属ワイヤより断線しやすい第2の金属ワイヤを介して、前記チップ電極と電気的に接続された第2の電極と、を備え、
前記第2の金属ワイヤと前記第2の電極との接合界面および前記第2の金属ワイヤと前記チップ電極との間の接合界面の少なくとも一方が、一部にくびれを有する形状であり、
前記第2の金属ワイヤの断線を示す電気信号を前記第2の電極が出力することを特徴とする半導体装置。 - 半導体装置であって、
絶縁基板と、
前記絶縁基板上に実装されたチップ電極を含む半導体チップと、
主電流を流す第1の金属ワイヤを介して、前記チップ電極と電気的に接続された第1の電極と、
前記第1の金属ワイヤより長く、より断線しやすい第2の金属ワイヤを介して、前記チップ電極と電気的に接続された第2の電極と、を備え、
前記第2の金属ワイヤの断線を示す電気信号を前記第2の電極が出力することを特徴とする半導体装置。 - 半導体装置であって、
絶縁基板と、
前記絶縁基板上に実装されたチップ電極を含む半導体チップと、
主電流を流す第1の金属ワイヤを介して、前記チップ電極と電気的に接続された第1の電極と、
前記第1の金属ワイヤより断線しやすい、該第1の金属ワイヤとは異なる材料からなる第2の金属ワイヤを介して、前記チップ電極と電気的に接続された第2の電極と、を備え、
前記第2の金属ワイヤの断線を示す電気信号を前記第2の電極が出力することを特徴とする半導体装置。 - 半導体装置であって、
絶縁基板と、
前記絶縁基板上に実装されたチップ電極を含む半導体チップと、
主電流を流す第1の金属ワイヤを介して、前記チップ電極と電気的に接続された第1の電極と、
前記第1の金属ワイヤより断線しやすい第2の金属ワイヤを介して、前記チップ電極と電気的に接続された第2の電極と、を備え、
前記第2の金属ワイヤと前記第2の電極との間の接合界面、および前記第2の金属ワイヤと前記チップ電極との間の接合界面の少なくとも一方に、接合強度を低減するための皮膜が形成され、
前記第2の金属ワイヤの断線を示す電気信号を前記第2の電極が出力することを特徴とする半導体装置。 - 請求項1〜5のいずれか1に記載の半導体装置であって、
前記第2の電極に電気的に接続されたセンス抵抗と、
前記センス抵抗の両端の電位差をモニタすることにより、前記金属ワイヤの断線を検出する制御回路と、を備えたことを特徴とする半導体装置。 - 請求項1〜5のいずれか1に記載の半導体装置であって、
前記チップ電極は、前記主電流を流すチップ主電極と、センス電流を流すセンス電流電極と、を含み、
前記第2の金属ワイヤは、前記センス電流電極に電気的に接続されることを特徴とする半導体装置。 - 半導体装置の製造方法であって、
絶縁基板上にチップ電極を含む半導体チップを実装するステップと、
第1の金属ワイヤを、第1のワイヤボンディング荷重で、チップ電極および第1の電極にワイヤボンディングするステップと、
第2の金属ワイヤを、第2のワイヤボンディング荷重で、前記チップ電極および第2の電極にワイヤボンディングするステップと、を有し、
前記第2のワイヤボンディング荷重が前記第1のワイヤボンディング荷重よりも小さいことを特徴とする製造方法。 - 半導体装置の製造方法であって、
絶縁基板上にチップ電極を含む半導体チップを実装するステップと、
第1の金属ワイヤを、第1の温度まで加熱して、チップ電極および第1の電極にワイヤボンディングするステップと、
第2の金属ワイヤを、第2の温度まで加熱して、前記チップ電極および第2の電極にワイヤボンディングするステップと、を有し、
前記第2の温度が前記第1の温度より低いことを特徴とする製造方法。
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JP4592634B2 (ja) * | 2005-06-17 | 2010-12-01 | パナソニック株式会社 | 半導体装置 |
US7939403B2 (en) * | 2006-11-17 | 2011-05-10 | Micron Technology, Inc. | Methods of forming a field effect transistors, pluralities of field effect transistors, and DRAM circuitry comprising a plurality of individual memory cells |
JP4842160B2 (ja) * | 2007-01-26 | 2011-12-21 | 三菱電機株式会社 | 半導体装置およびそれを備えたインバータシステム |
US7986212B2 (en) * | 2007-05-15 | 2011-07-26 | Yazaki Corporation | Fuse |
JP4978445B2 (ja) * | 2007-12-05 | 2012-07-18 | 株式会社デンソー | リードフレームおよび半導体装置の製造方法 |
JP5092054B2 (ja) * | 2009-09-25 | 2012-12-05 | 株式会社東芝 | 実装基板及び故障予測方法 |
JP5568586B2 (ja) | 2012-03-27 | 2014-08-06 | 株式会社東芝 | 電子装置、故障判定方法、寿命推定方法 |
JP6257264B2 (ja) | 2013-10-29 | 2018-01-10 | 三菱電機株式会社 | 半導体装置 |
JP5816340B2 (ja) * | 2014-06-19 | 2015-11-18 | 株式会社東芝 | 電子装置、故障判定方法、寿命推定方法、プログラム |
JP6746978B2 (ja) * | 2016-03-15 | 2020-08-26 | 富士電機株式会社 | 半導体装置 |
US10170578B2 (en) * | 2017-05-31 | 2019-01-01 | International Business Machines Corporation | Through-substrate via power gating and delivery bipolar transistor |
EP3489997B1 (en) * | 2017-11-28 | 2022-06-15 | Mitsubishi Electric R&D Centre Europe B.V. | System for allowing the restoration of an interconnection of a die of a power module |
DE112018007169T5 (de) | 2018-02-27 | 2020-11-05 | Mitsubishi Electric Corporation | Halbleitervorrichtung |
JP7318493B2 (ja) * | 2019-11-12 | 2023-08-01 | 株式会社デンソー | 半導体装置 |
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