JP7384146B2 - 半導体装置および電力変換装置 - Google Patents
半導体装置および電力変換装置 Download PDFInfo
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- JP7384146B2 JP7384146B2 JP2020196241A JP2020196241A JP7384146B2 JP 7384146 B2 JP7384146 B2 JP 7384146B2 JP 2020196241 A JP2020196241 A JP 2020196241A JP 2020196241 A JP2020196241 A JP 2020196241A JP 7384146 B2 JP7384146 B2 JP 7384146B2
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- Inverter Devices (AREA)
Description
図1は、実施の形態1に係る半導体装置100の断面図である。半導体装置100は、ベース板11と、平面視でベース板11の直上の領域を囲むケース18を備える。ケース18に囲まれた領域には、複数の半導体チップ14、16および複数の絶縁基板30が設けられる。複数の絶縁基板30は、ベース板11の上面に接合材12で接合される。半導体チップ14は、接合材13で絶縁基板30上に搭載される。半導体チップ16は、接合材15で絶縁基板30上に搭載される。
図11は、実施の形態2に係る半導体装置200の断面図である。図12は、実施の形態2に係るバリア層240を積み重ねた状態を示す図である。半導体装置200は、バリア層240の構成が半導体装置100と異なる。他の構成は半導体装置100と同様である。バリア層240は凸部243を有する。凸部243の上面248は、第2面42と平行な水平部248aと、水平部248aに対して傾斜した傾斜部248bを有する。傾斜部248bは、第1面41のうち凸部243の直下の部分に沿って傾斜している。
図13は、実施の形態3に係る半導体装置300の断面図である。半導体装置300は、バリア層340の構成が半導体装置100と異なる。他の構成は半導体装置100と同様である。バリア層340の第1面341は曲面から形成される。
図14は、実施の形態4に係る半導体装置400の断面図である。半導体装置400は、バリア層440の構成が半導体装置300と異なる。他の構成は半導体装置300と同様である。バリア層440は凸部443を有する。凸部443の上面448は、第2面42と平行な水平部448aと、水平部448aに対して傾斜した傾斜部448bを有する。傾斜部448bは、第1面341のうち凸部443の直下の部分に沿って傾斜している。
図15は、実施の形態5に係る半導体装置500の断面図である。半導体装置500は、バリア層540の構成が半導体装置100と異なる。他の構成は半導体装置100と同様である。バリア層540は、第1面41から下方に突出した凸部543を有する。
本実施の形態は、上述した実施の形態1~5にかかる半導体装置100、200、300、400、500を電力変換装置に適用したものである。本開示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6として、三相のインバータに本開示を適用した場合について説明する。
Claims (11)
- ベース板と、
平面視で前記ベース板の直上の領域を囲むケースと、
前記領域に設けられた半導体チップと、
前記領域を充填する封止樹脂と、
前記封止樹脂の上に設けられたバリア層と、
を備え、
前記バリア層は、前記ベース板と対向する第1面と、前記第1面と反対側の第2面と、前記第2面から上方に突出した凸部と、を有し、
前記第1面は、前記バリア層の中心部で最も前記ベース板との距離が短く、前記中心部から離れるほど連続して前記ベース板との距離が長くなり、
前記凸部は、前記中心部を避けて少なくとも前記中心部の両側に設けられ、
前記凸部の前記第2面からの高さは、前記第1面のうち前記凸部の直下の部分と、前記第1面のうち前記中心部に設けられた部分との前記バリア層の厚さ方向の距離よりも大きく、
前記バリア層は、前記封止樹脂よりも水分またはガスの透過性の低い材料で形成されることを特徴とする半導体装置。 - 前記凸部の上面は、前記第1面のうち前記凸部の直下の部分に沿って傾斜した部分を有することを特徴とする請求項1に記載の半導体装置。
- ベース板と、
平面視で前記ベース板の直上の領域を囲むケースと、
前記領域に設けられた半導体チップと、
前記領域を充填する封止樹脂と、
前記封止樹脂の上に設けられたバリア層と、
を備え、
前記バリア層は、前記ベース板と対向する第1面と、前記第1面と反対側の第2面と、前記第1面から下方に突出した凸部と、を有し、
前記第1面は、前記バリア層の中心部で最も前記ベース板との距離が短く、前記中心部から離れるほど連続して前記ベース板との距離が長くなり、
前記凸部は、前記中心部を避けて少なくとも前記中心部の両側に設けられ、
前記凸部の前記第2面からの高さは、前記中心部での前記バリア層の厚さよりも大きく、
前記バリア層は、前記封止樹脂よりも水分またはガスの透過性の低い材料で形成されることを特徴とする半導体装置。 - 前記凸部は、前記中心部の外周の一部を避けて設けられることを特徴とする請求項3に記載の半導体装置。
- 前記第2面は平面から形成されることを特徴とする請求項3または4に記載の半導体装置。
- 前記第1面は、前記中心部と前記バリア層の端部を繋ぐ複数の平面を有することを特徴とする請求項1から5の何れか1項に記載の半導体装置。
- 前記第1面は、曲面から形成されることを特徴とする請求項1から5の何れか1項に記載の半導体装置。
- 前記封止樹脂は、シリコーンゲルまたはエポキシ樹脂から形成されることを特徴とする請求項1から7の何れか1項に記載の半導体装置。
- 前記半導体チップはワイドバンドギャップ半導体によって形成されていることを特徴とする請求項1から8の何れか1項に記載の半導体装置。
- 前記ワイドバンドギャップ半導体は、炭化珪素、窒化ガリウム系材料またはダイヤモンドであることを特徴とする請求項9に記載の半導体装置。
- 請求項1から10の何れか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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JP2014130875A (ja) | 2012-12-28 | 2014-07-10 | Mitsubishi Electric Corp | 半導体装置およびその製造方法 |
WO2016158072A1 (ja) | 2015-03-27 | 2016-10-06 | 三菱電機株式会社 | パワーモジュール |
JP2019102575A (ja) | 2017-11-30 | 2019-06-24 | 三菱電機株式会社 | 半導体装置および電力変換装置 |
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JP2867753B2 (ja) * | 1991-02-25 | 1999-03-10 | 富士電機株式会社 | 半導体装置 |
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