JP2015135907A - 電力用半導体装置及びその製造方法 - Google Patents
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Abstract
Description
図1は、本発明の実施の形態1に係る電力用半導体装置を示す平面図である。図2は、図1のI−IIに沿った断面図である。図3は図1の装置内部を示す拡大平面図である。
図7は、本発明の実施の形態2に係る電力用半導体装置を示す平面図である。図8は、図7のI−IIに沿った断面図である。実施の形態1のような絶縁シート5が無く、代わりに電力用ダイパッド2の下方に樹脂8が充填されている。屈曲部9の下方において樹脂8の底面に窪み13が設けられている。その他の構成は実施の形態1と同様である。
図12は、本発明の実施の形態3に係る電力用半導体装置の製造方法を示す断面図である。屈曲部9は2個の曲げ部分を有し、屈曲部9の先端部がキャビティ12の底面に平行である。この屈曲部9の先端部に可動ピン15が接触する。これにより、可動ピン15の屈曲部9に対する接触が点から面になるため、電力用ダイパッド2の固定位置の厚み方向のずれが生じ難くなるため、電力用ダイパッド2下の樹脂8の厚みばらつきを減らすことができる。
図13は、本発明の実施の形態4に係る電力用半導体装置の製造方法を示す拡大平面図である。2個の可動ピン15により電力用ダイパッド2を支持する。このように電力用ダイパッド2を上金型10と下金型11を含めて3点で支持することにより、平面方向に安定して電力用ダイパッド2を固定できるため、電力用ダイパッド2下の樹脂8の厚みばらつきを減らすことができる。
図14は、本発明の実施の形態5に係る電力用半導体装置の製造方法を示す拡大平面図である。可動ピン15は、複数の電力用ダイパッド2の隣接する2つにまたがって支持する。これにより、少ない可動ピン15で安定した固定が可能となり、金型のメンテナンス性が向上する。
Claims (12)
- 電力用ダイパッド上に電力用半導体素子を実装する工程と、
前記電力用ダイパッドより高い位置に配置された制御用ダイパッド上に、前記電力用半導体素子を制御する制御用半導体素子を実装する工程と、
前記電力用半導体素子と前記制御用半導体素子とを金属細線により電気的に接続する工程と、
上金型と下金型により構成されるキャビティ内に、前記電力用ダイパッド、前記制御用ダイパッド、前記電力用半導体素子、前記制御用半導体素子、及び前記金属細線を入れて樹脂で封止する工程とを備え、
前記電力用ダイパッドは、前記金属細線の下方に配置され、上方に曲げられた屈曲部を有し、
前記電力用ダイパッド側から前記制御用ダイパッド側に向かって前記樹脂を注入することを特徴とする電力用半導体装置の製造方法。 - 前記樹脂で封止する際に、前記電力用ダイパッドの裏面に絶縁シートを接着することを特徴とする請求項1に記載の電力用半導体装置の製造方法。
- 前記キャビティの底面と前記屈曲部との間にスリーブを配置し、
前記スリーブから可動ピンを前記屈曲部に向けて突き出して前記電力用ダイパッドを前記下金型から離して支持した状態で前記キャビティ内に前記樹脂を注入して、前記電力用ダイパッドと前記下金型との間に前記樹脂を充填することを特徴とする請求項1に記載の電力用半導体装置の製造方法。 - 前記屈曲部は2個の曲げ部分を有し、前記屈曲部の先端部が前記キャビティの底面に平行であり、
前記屈曲部の前記先端部に前記可動ピンが接触することを特徴とする請求項3に記載の電力用半導体装置の製造方法。 - 2個以上の前記可動ピンにより前記電力用ダイパッドを支持することを特徴とする請求項3又は4に記載の電力用半導体装置の製造方法。
- 前記電力用ダイパッドは複数のダイパッドを有し、
前記可動ピンは、前記複数のダイパッドの隣接する2つにまたがって支持することを特徴とする請求項3〜5の何れか1項に記載の電力用半導体装置の製造方法。 - 前記屈曲部の先端部は前記制御用ダイパッドの上面よりも低い位置にあることを特徴とする請求項1〜6の何れか1項に記載の電力用半導体装置の製造方法。
- 前記金属細線により前記電力用半導体素子の上面と前記制御用半導体素子の上面とを直接接続し、
前記屈曲部を前記電力用半導体素子と前記制御用半導体素子との間に配置することを特徴とする請求項1〜7の何れか1項に記載の電力用半導体装置の製造方法。 - 電力用ダイパッドと、前記電力用ダイパッドより高い位置に配置された制御用ダイパッドとを有するリードフレームと、
前記電力用ダイパッド上に実装された電力用半導体素子と、
前記制御用ダイパッド上に実装され、前記電力用半導体素子を制御する制御用半導体素子と、
前記電力用半導体素子と前記制御用半導体素子とを電気的に接続する金属細線と、
前記電力用ダイパッド、前記制御用ダイパッド、前記電力用半導体素子、前記制御用半導体素子、及び前記金属細線を封止する樹脂とを備え、
前記電力用ダイパッドは、前記金属細線の下方に配置され、上方に曲げられた屈曲部を有することを特徴とする電力用半導体装置。 - 前記電力用ダイパッドの裏面に接着された絶縁シートを更に備えることを特徴とする請求項9に記載の電力用半導体装置。
- 前記屈曲部の先端部は前記制御用ダイパッドの上面よりも低い位置にあることを特徴とする請求項9又は10に記載の電力用半導体装置。
- 前記金属細線は前記電力用半導体素子の上面と前記制御用半導体素子の上面とを直接接続し、
前記屈曲部は前記電力用半導体素子と前記制御用半導体素子との間に配置されていることを特徴とする請求項9〜11の何れか1項に記載の電力用半導体装置。
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Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2017045747A (ja) * | 2015-08-24 | 2017-03-02 | 三菱電機株式会社 | 半導体装置 |
WO2018154744A1 (ja) * | 2017-02-27 | 2018-08-30 | 三菱電機株式会社 | 半導体装置、半導体装置の製造方法 |
US20190057928A1 (en) * | 2016-02-09 | 2019-02-21 | Mitsubishi Electric Corporation | Power semiconductor apparatus and manufacturing method therefor |
CN109473414A (zh) * | 2017-09-08 | 2019-03-15 | 万国半导体(开曼)股份有限公司 | 模制智能功率模块及其制造方法 |
US10305411B2 (en) | 2016-07-14 | 2019-05-28 | Mitsubishi Electric Corporation | Semiconductor module |
CN115966542A (zh) * | 2023-01-31 | 2023-04-14 | 海信家电集团股份有限公司 | 功率模块和具有其的电子设备 |
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