JP2011233753A - 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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Abstract
【解決手段】半導体装置1は、導電体を有する基板2と、基板2の上に配置され、かつ導電体2aに電気的に接続された半導体チップ3と、一方端部41が導電体2aと電気的に接続された管状の電極4と、基板2、半導体チップ3および電極4を封止する封止樹脂5とを備えている。電極4は封止樹脂5を封止する前の状態で基板2と半導体チップ3とが積層する積層方向に伸縮可能に構成されている。電極4の他方端部42の先端部42aは封止樹脂5から露出している。電極4は他方端部42の先端部42aにおいて開口する中空空間6を有している。
【選択図】図1
Description
最初に本発明の一実施の形態の半導体装置の構成について説明する。半導体装置の構成についてトランスファーモールド型のパワー半導体装置を例に説明する。
図1および図7(A)〜(C)を参照して、導電体2aを有する基板2の上に、導電体2aに電気的に接続するように半導体チップ3が配置される。基板2と半導体チップ3とが積層する積層方向に伸縮可能な管状の電極4は、電極4の一方端部41が導電体2aに電気的に接続するように配置される。ゲート抵抗9が半導体チップ3とワイヤー10によって電気的に接続するように配置される。ヒートスプレッダ7が導電体2aと電気的に接続するように配置される。
図7(A)を参照して、上金型31および下金型32の間の空間(キャビティ)に、基板2にはんだ接合された電極4がセッティングされたセッティング時においては、電極4は上金型31に接触していない。そのため、電極4は圧縮されていない。
Claims (8)
- 導電体を有する基板と、
前記基板の上に配置され、かつ前記導電体に電気的に接続された半導体チップと、
一方端部が前記導電体と電気的に接続された管状の電極と、
前記基板、前記半導体チップおよび前記電極を封止する封止樹脂とを備え、
前記電極は前記封止樹脂を封止する前の状態で前記基板と前記半導体チップとが積層する積層方向に伸縮可能に構成されており、
前記電極の他方端部の先端部は前記封止樹脂から露出しており、
前記電極は前記他方端部の先端部において開口する中空空間を有している、半導体装置。 - 前記電極は、前記封止樹脂が接触する部分に曲線の外形部を有している、請求項1に記載の半導体装置。
- 前記電極の前記一方端部は、前記導電体とはんだ接合で電気的に接続されており、かつ前記導電体に向かって前記一方端部の先端部に至るまで径が小さくなるように構成されている、請求項1または2に記載の半導体装置。
- 前記電極の前記他方端部は、前記中空空間の開口に向かって前記他方端部の前記先端部に至るまで径が大きくなるように構成されている、請求項1〜3のいずれかに記載の半導体装置。
- 前記電極は、前記封止樹脂を封止する前の状態で前記基板の抗折強度より小さい力で前記積層方向に伸縮可能に構成されている、請求項1〜4のいずれかに記載の半導体装置。
- 前記電極は、前記封止樹脂の封止時における射出圧力によって、前記封止樹脂が前記開口から前記中空空間に流入しないように構成されている、請求項1〜5のいずれかに記載の半導体装置。
- 前記電極が前記積層方向において弾性領域内で圧縮された状態となるように前記封止樹脂が封止されている、請求項1〜6のいずれかに記載の半導体装置。
- 導電体を有する基板の上に、前記導電体に電気的に接続するように半導体チップを配置し、かつ前記基板と前記半導体チップとが積層する積層方向に伸縮可能な管状の電極を前記電極の一方端部が前記導電体に電気的に接続するように配置する工程と、
前記積層方向の両側から前記基板、前記半導体チップおよび前記電極を1対の金型内で挟み込むことにより、前記電極の他方端部を前記1対の金型の一方で押して前記電極を前記積層方向に縮ませる工程と、
前記1対の金型内に封止樹脂を注入して、前記基板、前記半導体チップおよび前記電極を前記封止樹脂で封止する工程とを備えた、半導体装置の製造方法。
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