JP6698879B2 - 半導体装置、および半導体装置の製造方法 - Google Patents
半導体装置、および半導体装置の製造方法 Download PDFInfo
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- JP6698879B2 JP6698879B2 JP2018561914A JP2018561914A JP6698879B2 JP 6698879 B2 JP6698879 B2 JP 6698879B2 JP 2018561914 A JP2018561914 A JP 2018561914A JP 2018561914 A JP2018561914 A JP 2018561914A JP 6698879 B2 JP6698879 B2 JP 6698879B2
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Description
図1は、本発明の実施の形態1に係る電力用の半導体装置1の上面図である。また、図2は図1のA−A’断面図であり、図3は図1のB−B’断面図である。なお、以降の説明においては、図1〜3のZ軸の正方向を上向きと定義する。
本発明に係る半導体装置1の一適用例として、車載モータなどを駆動するインバータを考えることができる。モータの駆動時には通常数百アンペアの電流が流れるため、モータの負荷の増減に伴う温度変化によって、半導体装置1の内部の接合部分(第1の固着層31や第2の固着層32)に熱応力によるひずみが生じる。この際、繰り返しの温度変化によって接合部分が劣化して破損するのを防ぐためには、接合部分に生じる熱応力によるひずみを小さくする必要がある。
次に、本発明の実施の形態2に係る半導体装置201について説明する。
上記の実施の形態1に係る半導体装置1の第2の固着層32の材料をはんだで構成する場合、はんだを供給する方法としては、ペースト状のはんだを用いる方法と、板状のはんだを用いる方法とがある。
次に、本発明の実施の形態3に係る半導体装置301について説明する。
図13は、本発明の実施の形態3に係る電力用の半導体装置301の上面図である。また、図14は図13のA−A’断面図である。なお、以降の説明においては、図13〜14のZ軸の正方向を上向きと定義する。
Claims (7)
- 両面に導体層を有するセラミック基板と、
前記セラミック基板の一方の導体層上に接合される半導体素子と、
前記一方の導体層上に前記半導体素子の側面を囲むように配置される枠部材と、
前記半導体素子の上部に固着層によって接合されると共に側面に第1の嵌合部が形成される電極とを備え、
前記枠部材の内壁には、前記電極の前記第1の嵌合部に嵌合する第2の嵌合部と、該枠部材の内壁から前記電極の側面まで延びる第1の位置決め部とが形成される、半導体装置。 - 前記枠部材の前記第1の位置決め部と前記電極の側面との間の隙間は、前記枠部材の前記第2の嵌合部と前記電極の前記第1の嵌合部との間の隙間よりも小さく形成される、請求項1に記載の半導体装置。
- 前記枠部材の前記第2の嵌合部の高さは、前記第1の位置決め部の高さよりも高く形成される、請求項1または2に記載の半導体装置。
- 前記電極の側面には、前記枠部材の前記第1の位置決め部に対応する位置に第2の位置決め部が形成され、前記電極の底面の幅よりも前記半導体素子の被固着面の幅の方が広い、請求項1〜3のいずれか一項に記載の半導体装置。
- 前記電極の前記第2の位置決め部は、該電極の側面の上部にのみ形成される、請求項4に記載の半導体装置。
- 前記電極における前記半導体素子の被固着面の真上に位置しない箇所が上側に折り曲げられ、前記電極の底面の面積よりも前記半導体素子の被固着面の面積の方が広い、請求項1〜5のいずれか一項に記載の半導体装置。
- 前記電極の底面に前記固着層としての板状はんだを配置するステップと、
前記板状はんだを加圧して塑性変形させることによって、前記板状はんだを前記電極の底面に固定するステップと、
前記板状はんだが固定された前記電極を前記半導体素子の被固着面上に配置するステップと、
前記板状はんだを加熱して溶融させることによって、前記電極の底面を前記半導体素子の被固着面に接合させるステップと
を含む、請求項4〜6のいずれか一項に記載の半導体装置の製造方法。
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PCT/JP2017/046731 WO2018131473A1 (ja) | 2017-01-16 | 2017-12-26 | 半導体装置 |
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JPH1168035A (ja) * | 1997-06-12 | 1999-03-09 | Hitachi Ltd | パワー半導体モジュール |
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