JP6644196B1 - 半導体装置およびその製造方法ならびに電力変換装置 - Google Patents
半導体装置およびその製造方法ならびに電力変換装置 Download PDFInfo
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- 239000002184 metal Substances 0.000 claims description 25
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 20
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- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 10
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- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 description 1
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Abstract
Description
実施の形態1に係る半導体装置について説明する。図1および図2に示すように、半導体装置1は、ヒートシンク3、絶縁層5、リードフレーム7、パワー半導体素子9、封止樹脂13およびフィン23を備えている。
実施の形態2に係る半導体装置について説明する。図16に示すように、半導体装置1では、回路パターンとして、たとえば、銅板8のパターンが、ヒートシンク3の第1主面3a上に絶縁層5を介在させて配置されている。その銅板8には、導体部として、金属導体25が電気的に接続されている。
前述した半導体装置1では、ヒートシンク3の第2主面3bに複数のフィン23が一体的に配置されている場合について説明した。ここでは、ヒートシンクと複数のフィンとが別体とされている半導体装置について説明する。
ここでは、上述した実施の形態1〜3において説明した半導体装置を適用した電力変換装置について説明する。本発明は特定の電力変換装置に限定されるものではないが、以下、実施の形態4として、三相のインバータに本発明を適用した場合について説明する。
Claims (13)
- 対向する第1主面および第2主面を有し、銅およびアルミニウムのいずれかから形成されたヒートシンクと、
前記ヒートシンクの前記第1主面に絶縁層を介在させて配置された回路パターンと、
前記回路パターンに電気的に接続された導体部と、
前記回路パターンに搭載され、前記回路パターンに電気的に接続された半導体素子と、
前記ヒートシンクの前記第1主面に形成され、前記半導体素子および前記回路パターンを封止する封止部材と
を備え、
前記導体部は、前記封止部材における、前記ヒートシンクが位置している側とは反対側に位置する表面から露出し、
前記封止部材は、前記ヒートシンクの前記第1主面の外周に沿って全周にわたり位置する外周領域よりも内側に位置する内側領域を覆うように形成され、
前記ヒートシンクの前記第1主面における前記外周領域には、前記封止部材よりも外側に位置し、前記封止部材の外縁に隣接する態様で第1凹部が形成された、半導体装置。 - 前記回路パターンはリードフレームを含み、
前記導体部は、前記リードフレームに繋がっているリード端子を含む、請求項1記載の半導体装置。 - 前記回路パターンは金属板を含み、
前記導体部は、前記金属板に接合された金属導体を含む、請求項1記載の半導体装置。 - 前記ヒートシンクの前記第1主面における前記内側領域には、第2凹部が形成され、
前記第2凹部には、前記封止部材の部分が充填された、請求項1記載の半導体装置。 - 前記ヒートシンクの前記第2主面の側には、放熱フィンが形成された、請求項1記載の半導体装置。
- 前記第1凹部は、前記封止部材に沿って連続的に形成された、請求項1記載の半導体装置。
- 対向する第1主面および第2主面を有し、銅およびアルミニウムのいずれかから形成されたヒートシンクを用意する工程と、
回路パターンを用意する工程と、
前記回路パターンに半導体素子を搭載し、前記半導体素子と前記回路パターンとを電気的に接続する工程と、
前記回路パターンに対して、前記ヒートシンクが配置されることになる側とは反対側に向けて、前記回路パターンと電気的に接続された導体部を配置する工程と、
前記ヒートシンクの前記第1主面に絶縁膜を介在させて、前記半導体素子が電気的に接続された前記回路パターンを搭載する工程と、
下金型、ならびに、前記半導体素子と前記回路パターンとを封止する封止部材が充填されるキャビティおよび前記下金型に向かって突出した突出部が形成された上金型を用意する工程と、
前記回路パターンを搭載した前記ヒートシンクを前記下金型に配置する工程と、
前記キャビティ内に前記半導体素子および前記回路パターンを収容する態様で、前記下金型と前記上金型とによって前記ヒートシンクを挟み込む工程と、
前記キャビティ内に封止部材を充填することによって、前記半導体素子および前記回路パターンを封止する工程と、
前記下金型および前記上金型を取り外し、前記封止部材における、前記ヒートシンクが位置する側とは反対側に位置する表面から前記導体部を露出させる工程と
を備え、
前記上金型と前記下金型とによって前記ヒートシンクを挟み込む工程では、
前記ヒートシンクの外周に沿って全周にわたる部分が挟み込まれ、
前記ヒートシンクの前記第1主面の部分には、前記封止部材よりも外側に位置し、前記封止部材の外縁に隣接する態様で、前記突出部に対応する第1凹部が形成される、半導体装置の製造方法。 - 前記下金型および前記上金型を取り外した後、前記ヒートシンクにおける前記第2主面の側に、放熱フィンを設置する工程を備えた、請求項7記載の半導体装置の製造方法。
- 前記下金型を用意する工程では、前記下金型として、前記ヒートシンクの前記第2主面の全面に接触する載置部が形成されている下金型が用意される、請求項8記載の半導体装置の製造方法。
- 前記回路パターンを用意する工程では、リード端子となる部分を含むリードフレームが用意され、
前記導体部を配置する工程では、前記リード端子となる部分が、前記導体部として配置される、請求項7記載の半導体装置の製造方法。 - 前記回路パターンを用意する工程では、金属板がパターニングされ、
前記導体部を配置する工程では、金属導体が、前記導体部として前記金属板に接合される、請求項7記載の半導体装置の製造方法。 - 前記半導体素子および前記回路パターンを封止する工程では、前記上金型と前記金属導体との間に耐熱性フィルムを介在させた状態で、前記キャビティ内に前記封止部材が充填される、請求項11記載の半導体装置の製造方法。
- 請求項1〜6のいずれか1項に記載の半導体装置を有し、入力される電力を変換して出力する主変換回路と、
前記主変換回路を制御する制御信号を前記主変換回路に出力する制御回路と
を備えた電力変換装置。
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US20220020672A1 (en) | 2022-01-20 |
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