JP6979864B2 - パワー半導体装置及びその製造方法 - Google Patents
パワー半導体装置及びその製造方法 Download PDFInfo
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Description
Claims (14)
- 電流を伝達する導体とパワー半導体素子を有する回路部と、
前記回路部を挟んで互いに対向する第1ベース部及び第2ベース部と、
前記導体及び前記パワー半導体素子と接触しかつ前記第1ベース部と前記第2ベース部の間の空間に充填されるトランスファーモールド部材と、を備え、
前記第1ベース部は、当該第1ベース部の周縁と繋がる第1平面部と、当該第1平面部と当該第1ベース部の他の部分とを接続させかつ塑性変形された第1屈曲部と、を有し、
前記トランスファーモールド部材は、前記第1平面部と接触した状態で一体に構成され、
前記トランスファーモールド部材は、前記第1平面部の端部を覆うパワー半導体装置。 - 電流を伝達する導体とパワー半導体素子を有する回路部と、
前記回路部を挟んで互いに対向する第1ベース部及び第2ベース部と、
前記導体及び前記パワー半導体素子と接触しかつ前記第1ベース部と前記第2ベース部の間の空間に充填されるトランスファーモールド部材と、を備え、
前記第1ベース部は、当該第1ベース部の周縁と繋がる第1平面部と、当該第1平面部と当該第1ベース部の他の部分とを接続させかつ当該第1ベース部の他の部分よりも薄く形成された第1切削部と、を有し、
前記トランスファーモールド部材は、前記第1平面部と接触した状態で一体に構成され、
前記トランスファーモールド部材は、前記第1平面部の端部を覆うパワー半導体装置。 - 請求項1に記載のパワー半導体装置であって、
前記第2ベース部は、当該第2ベース部の周縁と繋がる第2平面部と、当該第2平面部と当該第2ベース部の他の部分とを接続させかつ塑性変形された第2屈曲部と、を有するパワー半導体装置。 - 請求項2に記載のパワー半導体装置であって、
前記第2ベース部は、当該第2ベース部の周縁と繋がる第2平面部と、当該第2平面部と当該第2ベース部の他の部分とを接続させかつ当該第2ベース部の他の部分よりも薄く形成された第2切削部と、を有するパワー半導体装置。 - 請求項3または4に記載のパワー半導体装置であって、
前記トランスファーモールド部材は、前記第2平面部の端部を覆うパワー半導体装置。 - 請求項1または3に記載のパワー半導体装置であって、
前記第1ベース部と金属溶融接合により接続されかつ流路を形成する流路部材を備え、
前記第1ベース部は、フィンが形成されるフィンベースと、前記フィンベースと前記第1屈曲部の間に設けられる中間部と、を有し、
前記流路部材は、前記中間部において接続されるパワー半導体装置。 - 請求項2または4に記載のパワー半導体装置であって、
前記第1ベース部と金属溶融接合により接続されかつ流路を形成する流路部材を備え、
前記第1ベース部は、フィンが形成されるフィンベースと、前記フィンベースと前記第1切削部の間に設けられる中間部と、を有し、
前記流路部材は、前記中間部において接続されるパワー半導体装置。 - 請求項6または7に記載のパワー半導体装置であって、
前記中間部の厚みは、前記フィンベースの厚みよりも小さく形成され、
前記流路部材の流路側の面は、前記フィンベースの前記フィンが形成された側の面と面一であるパワー半導体装置。 - 請求項1ないし8に記載のいずれかのパワー半導体装置であって、
前記回路部と前記トランスファーモールド部材との間、前記第1ベース部と前記トランスファーモールド部材との間、及び前記第2ベース部と前記トランスファーモールド部材との間において、樹脂薄膜が設けられるパワー半導体装置。 - 電流を伝達する導体とパワー半導体素子を有する回路部を第1ベース部と第2ベース部により挟む第1工程と、
前記第1ベース部と前記第2ベース部のそれぞれの周縁の一部を含むように当該第1ベース部と当該第2ベース部のそれぞれの一部をプレスし、当該第1ベース部と当該第2ベース部を屈曲させる第2工程と、
前記第1ベース部と前記第2ベース部の前記それぞれの一部に金型を当接させて、前記導体及び前記パワー半導体素子と接触しかつ前記第1ベース部と前記第2ベース部の間の空間に充填されるモールド部材を注入する第3工程と、を備えるパワー半導体装置の製造方法であって、
前記第3工程において、前記モールド部材は、前記第1ベース部および前記第2ベース部の周縁端部を覆うように、形成されるパワー半導体装置の製造方法。 - 電流を伝達する導体とパワー半導体素子を有する回路部を第1ベース部と第2ベース部により挟む第1工程と、
前記第1ベース部と前記第2ベース部のそれぞれの周縁の一部を含むように当該第1ベース部と当該第2ベース部のそれぞれの切削する第2工程と、
前記第1ベース部と前記第2ベース部の前記それぞれの一部に金型を当接させて、前記導体及び前記パワー半導体素子と接触しかつ前記第1ベース部と前記第2ベース部の間の空間に充填されるモールド部材を注入する第3工程と、を備えるパワー半導体装置の製造方法であって、
前記第3工程において、前記モールド部材は、前記第1ベース部および前記第2ベース部の周縁端部を覆うように、形成されるパワー半導体装置の製造方法。 - 請求項10に記載のパワー半導体装置の製造方法であって、
前記第1ベース部は、フィンが形成されるフィンベースと、前記フィンベースと前記第1ベース部の屈曲部との間に設けられる中間部と、を有し、
流路部材を前記中間部に金属溶融接合により接続する第4工程を備えるパワー半導体装置の製造方法。 - 請求項11に記載のパワー半導体装置の製造方法であって、
前記第1ベース部は、フィンが形成されるフィンベースと、前記フィンベースと前記第1ベース部の切削部との間に設けられる中間部と、を有し、
流路部材を前記中間部に金属溶融接合により接続する第4工程を備えるパワー半導体装置の製造方法。 - 請求項10ないし13のいずれか一項に記載のパワー半導体装置の製造方法であって、
前記第3工程において、前記モールド部材を注入する前に前記回路部と前記第1ベース部と前記第2ベース部の表面に樹脂薄膜を形成するパワー半導体装置の製造方法。
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