JP6816825B2 - 半導体装置、電力変換装置および半導体装置の製造方法 - Google Patents
半導体装置、電力変換装置および半導体装置の製造方法 Download PDFInfo
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- JMASRVWKEDWRBT-UHFFFAOYSA-N Gallium nitride Chemical compound [Ga]#N JMASRVWKEDWRBT-UHFFFAOYSA-N 0.000 claims description 2
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- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical group [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 2
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- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
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Description
本願の発明に係る半導体装置の製造方法では、リードフレームがベース板に接合される。従って、リードフレームが半導体素子の上に接合される構造と比較して、プレスフィット端子を開口部に差し込む際に、モールド樹脂または半導体素子に損傷が発生することを抑制できる。
図1は、実施の形態1に係る半導体装置10の断面図である。半導体装置10は、電力用半導体装置である。半導体装置10は、導電板12を備える。導電板12は、銅、アルミニウムなどから形成される。導電板12の上面には絶縁層14が設けられる。絶縁層14は、導電板12の上面に接合されている。絶縁層14は高い熱伝導性を有する。絶縁層14は、例えば高伝導性フィラーを含むエポキシ樹脂から形成される。導電板12と絶縁層14はベース板16を構成する。ベース板16の構成はこれに限らない。ベース板16はヒートシンクであっても良い。
図5は、実施の形態2に係る半導体装置10aが実装基板50aに接続された状態を示す断面図である。実装基板50aは外部装置である。半導体装置10aは複数のプレスフィット端子40aの構造が実施の形態1と異なる。複数のプレスフィット端子40aの各々は、第1圧入部41と第2圧入部42との間に屈曲部44aを有する。第1圧入部41と第2圧入部42とは接続部43aによって互いに接続される。
本実施の形態は、上述した実施の形態1または2に係る半導体装置10、10a、10bを電力変換装置に適用したものである。本実施の形態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3として、三相のインバータに半導体装置10、10a、10bを適用した場合について説明する。
Claims (12)
- ベース板と、
第1面と、前記第1面と反対の面である第2面とを有し、前記第2面が前記ベース板の上面に接合されたリードフレームと、
前記リードフレームの前記第1面に設けられた半導体素子と、
前記ベース板の上面と、前記リードフレームと、前記半導体素子と、を覆うモールド樹脂と、
を備え、
前記モールド樹脂には、前記モールド樹脂の表面から前記リードフレームまで伸び、プレスフィット端子が挿入される端子挿入穴が設けられ、
前記リードフレームには、前記端子挿入穴に連なり、前記プレスフィット端子が圧入される開口部が設けられ、
前記リードフレームの端部は、前記モールド樹脂の外郭を形成する側面から露出しないことを特徴とする半導体装置。 - 前記リードフレームの端部は前記モールド樹脂に覆われることを特徴とする請求項1に記載の半導体装置。
- 前記端子挿入穴は、前記モールド樹脂の前記第1面と対向する面から前記第1面まで伸び、
前記開口部には、前記第1面側から前記プレスフィット端子が圧入されることを特徴とする請求項1または2に記載の半導体装置。 - 弾性力を有する第1圧入部と、弾性力を有する第2圧入部と、が両端にそれぞれ設けられ、前記端子挿入穴に挿入された前記プレスフィット端子をさらに備え、
前記第1圧入部は、前記開口部に圧入され、
前記第2圧入部は、前記モールド樹脂の外部に設けられることを特徴とする請求項1〜3の何れか1項に記載の半導体装置。 - 前記プレスフィット端子は、前記第1圧入部と前記第2圧入部との間に屈曲部を有し、
前記屈曲部により、前記第1圧入部と前記第2圧入部との水平方向の位置がずれ、
前記屈曲部は前記モールド樹脂の外部に設けられることを特徴とする請求項4に記載の半導体装置。 - 前記第1圧入部よりも、前記第2圧入部は前記水平方向で外側に設けられることを特徴とする請求項5に記載の半導体装置。
- 前記第1圧入部よりも、前記第2圧入部は前記水平方向で内側に設けられることを特徴とする請求項5に記載の半導体装置。
- 前記半導体素子は、ワイドバンドギャップ半導体により形成されていることを特徴とする請求項1〜7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8に記載の半導体装置。
- 請求項1〜9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。 - 第1面と、前記第1面と反対の面である第2面とを有するリードフレームに、プレスフィット端子が圧入される開口部を設ける工程と、
前記第1面に半導体素子を設ける工程と、
前記第2面をベース板の上面に接合する工程と、
前記ベース板の上面と、前記リードフレームと、前記半導体素子と、を覆うモールド樹脂を、前記リードフレームの端部が前記モールド樹脂の外郭を形成する側面から露出しないように形成するモールド工程と、
を備え、
前記モールド工程では、前記モールド樹脂の表面から前記開口部に連なり、前記プレスフィット端子が挿入される端子挿入穴を前記モールド樹脂に形成することを特徴とする半導体装置の製造方法。 - 内部にキャビティが形成され、前記キャビティの天井部分から前記キャビティの底面に向かって伸びるピンを有する金型を準備する工程を備え、
前記モールド工程は、
前記キャビティ内に前記ベース板と前記リードフレームと前記半導体素子とを収納し、前記ピンを前記開口部に挿入する工程と、
前記ピンが前記開口部に挿入された状態で、前記キャビティに前記モールド樹脂を注入し、前記モールド樹脂に前記端子挿入穴を形成する工程と、
を備えることを特徴とする請求項11に記載の半導体装置の製造方法。
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JP7450740B2 (ja) | 2020-09-14 | 2024-03-15 | 三菱電機株式会社 | 半導体装置、半導体装置の製造方法および電力変換装置 |
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WO2023089810A1 (ja) * | 2021-11-22 | 2023-05-25 | 三菱電機株式会社 | 半導体装置 |
US20240170378A1 (en) * | 2022-11-17 | 2024-05-23 | Semiconductor Components Industries, Llc | Power module package with molded via and dual side press-fit pin |
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JPH01196153A (ja) * | 1988-02-01 | 1989-08-07 | Oki Electric Ind Co Ltd | 樹脂封止半導体装置 |
JP3688760B2 (ja) * | 1995-07-31 | 2005-08-31 | ローム株式会社 | 樹脂パッケージ型半導体装置およびその製造方法 |
US5666003A (en) | 1994-10-24 | 1997-09-09 | Rohm Co. Ltd. | Packaged semiconductor device incorporating heat sink plate |
CN101809734B (zh) * | 2007-09-26 | 2012-01-25 | 三菱电机株式会社 | 导热性片材及其制造方法和功率模块 |
JP5339800B2 (ja) * | 2008-07-10 | 2013-11-13 | 三菱電機株式会社 | 半導体装置の製造方法 |
JP4567773B2 (ja) | 2008-07-18 | 2010-10-20 | 三菱電機株式会社 | 電力用半導体装置 |
JP5383621B2 (ja) * | 2010-10-20 | 2014-01-08 | 三菱電機株式会社 | パワー半導体装置 |
JP5762319B2 (ja) * | 2012-01-24 | 2015-08-12 | 三菱電機株式会社 | 電力用半導体装置および電力用半導体装置の製造方法 |
JP5734493B2 (ja) | 2014-05-20 | 2015-06-17 | 三菱電機株式会社 | 電力用半導体装置 |
JP6249892B2 (ja) * | 2014-06-27 | 2017-12-20 | 三菱電機株式会社 | 半導体装置の製造方法 |
JP6233285B2 (ja) | 2014-11-28 | 2017-11-22 | 三菱電機株式会社 | 半導体モジュール、電力変換装置 |
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