JP7322054B2 - 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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- JP7322054B2 JP7322054B2 JP2020550411A JP2020550411A JP7322054B2 JP 7322054 B2 JP7322054 B2 JP 7322054B2 JP 2020550411 A JP2020550411 A JP 2020550411A JP 2020550411 A JP2020550411 A JP 2020550411A JP 7322054 B2 JP7322054 B2 JP 7322054B2
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Description
第1方向において互いに反対側を向く素子主面および素子裏面を有しており、前記素子主面に主面電極および前記素子裏面に裏面電極が形成された半導体素子と、
前記素子裏面に対向しており、前記裏面電極が導通接合された第1導電体と、
前記第1導電体と離間して配置されており、前記主面電極に導通する第2導電体と、
前記素子主面と同じ方向を向く接続部材主面を有しており、前記主面電極と前記第2導電体とを接続する接続部材と、
を備えており、
前記接続部材は、前記接続部材主面から前記第1方向に突き出た第1の突起を含み、かつ、第1接合層を介して前記主面電極に接合されており、
前記第1の突起は、前記第1方向に見て、前記主面電極に重なる、半導体装置。
〔付記2〕
前記第1の突起は、前記第1方向に見て、前記第1方向に直交する第2方向に延びている、
付記1に記載の半導体装置。
〔付記3〕
前記第1の突起は、前記接続部材主面から起き上がる一対の第1側面を有しており、
前記一対の第1側面は、前記第1方向および前記第2方向に直交する第3方向に離間している、
付記2に記載の半導体装置。
〔付記4〕
前記一対の第1側面は、前記接続部材主面に対して傾斜している、
付記3に記載の半導体装置。
〔付記5〕
前記一対の第1側面がなす角度は、60~120°である、
付記4に記載の半導体装置。
〔付記6〕
前記第1の突起は、前記一対の第1側面に繋がる第1頂面をさらに有している、
付記3ないし付記5のいずれか一項に記載の半導体装置。
〔付記7〕
前記第1頂面は、平坦である、
付記6に記載の半導体装置。
〔付記8〕
前記第1頂面は、前記接続部材主面に対して傾斜している、
付記7に記載の半導体装置。
〔付記9〕
前記接続部材と前記第2導電体との間に介在し、前記接続部材と前記第2導電体とを導通させる第2接合層を、さらに備えている、
付記1ないし付記8のいずれか一項に記載の半導体装置。
〔付記10〕
前記接続部材は、前記接続部材主面から前記第1方向に突き出た1以上の第2の突起を含んでおり、
前記1以上の第2の突起の各々は、前記第1方向に見て、前記第2接合層に重なる、
付記9に記載の半導体装置。
〔付記11〕
前記第2の突起は、前記第1方向に見て、前記第1方向に直交する第2方向に延びている、
付記10に記載の半導体装置。
〔付記12〕
前記第2の突起は、前記接続部材主面から起き上がる一対の第2側面を有しており、
前記一対の第2側面は、前記第1方向および前記第2方向に直交する第3方向に離間している、
付記11に記載の半導体装置。
〔付記13〕
前記一対の第2側面は、前記接続部材主面に対して傾斜している、
付記12に記載の半導体装置。
〔付記14〕
前記一対の第2側面がなす角度は、60~120°である、
付記13に記載の半導体装置。
〔付記15〕
前記第2の突起は、前記一対の第2側面に繋がる第2頂面をさらに有している、
付記12ないし付記14のいずれか一項に記載の半導体装置。
〔付記16〕
前記接続部材は、前記半導体素子に接合された第1接合部および前記第2導電体に接合された第2接合部を含んでおり、
前記第2接合部の前記第1方向の寸法は、前記第1接合部の前記第1方向の寸法よりも大きい、
付記1ないし付記15のいずれか一項に記載の半導体装置。
〔付記17〕
前記接続部材は、前記第1接合部と前記第2接合部とを繋ぐ連絡部をさらに含んでおり、
前記接続部材主面は、前記第1接合部、前記第2接合部および前記連絡部の前記第1方向の一方を向く各表面によって形成されている、
付記16に記載の半導体装置。
〔付記18〕
前記連絡部は、前記第1方向に直交する第3方向において、前記第1接合部に重なる、付記17に記載の半導体装置。
〔付記19〕
前記半導体素子は、第3接合層を介して前記第1導電体に導通接合されている、
付記1ないし付記18のいずれか一項に記載の半導体装置。
〔付記20〕
前記半導体素子は、パワーMOSFETである、
付記1ないし付記19のいずれか一項に記載の半導体装置。
〔付記21〕
前記第1接合層は、焼結金属である、
付記1ないし付記20のいずれか一項に記載の半導体装置。
〔付記22〕
前記半導体素子、前記接続部材、前記第1接合層、前記第1導電体の少なくとも一部、および、前記第2導電体の少なくとも一部を覆う封止樹脂をさらに備えている、
付記1ないし付記21のいずれか一項に記載の半導体装置。
〔付記23〕
第1方向において互いに反対側を向く素子主面および素子裏面を有する半導体素子と、
互いに離間して配置された第1導電体および第2導電体と、
前記第1方向の一方を向く接続部材主面を有し、かつ、前記接続部材主面から前記第1方向に突き出た第1の突起を含む接続部材と、
を備え、
前記接続部材を準備する接続部材準備工程と、
前記半導体素子を、前記第1導電体に搭載するマウント工程と、
前記素子主面の上に焼結用金属材料を形成する焼結用金属材料形成工程と、
前記接続部材主面を前記素子主面と同じ方向を向く姿勢であり、かつ、前記第1方向に見て、前記焼結用金属材料と前記第1の突起とが重なるように、前記接続部材の一部を前記焼結用金属材料の上に載置する接続工程と、
前記第1の突起が形成された側から前記接続部材を加圧部材によって加圧し、かつ、加熱することで、前記焼結用金属材料を焼結金属にする加圧加熱工程と、
を有する、半導体装置の製造方法。
Claims (24)
- 第1方向において互いに反対側を向く素子主面および素子裏面を有しており、前記素子主面に主面電極および前記素子裏面に裏面電極が形成された半導体素子と、
前記素子裏面に対向しており、前記裏面電極が導通接合された第1導電体と、
前記第1導電体と離間して配置されており、前記主面電極に導通する第2導電体と、
前記素子主面と同じ方向を向く接続部材主面を有しており、前記主面電極と前記第2導電体とを接続する接続部材と、
を備えており、
前記接続部材は、前記接続部材主面から前記第1方向に突き出た第1の突起を含み、かつ、第1接合層を介して前記主面電極に接合されており、
前記第1の突起は、前記第1方向に見て、前記主面電極に重なり、
前記接続部材は、前記半導体素子に接合された第1接合部と、前記第2導電体に接合された第2接合部と、前記第1接合部と前記第2接合部とを繋ぐ連絡部とを含んでおり、
前記接続部材主面は、前記第1接合部、前記第2接合部および前記連絡部の前記第1方向の一方を向く各表面によって形成されており、
前記第1の突起の全体が、前記接続部材主面の前記第1方向の一方に位置する、
半導体装置。 - 前記第1の突起は、前記第1方向に見て、前記第1方向に直交する第2方向に延びている、
請求項1に記載の半導体装置。 - 前記第1の突起は、前記接続部材主面から起き上がる一対の第1側面を有しており、
前記一対の第1側面は、前記第1方向および前記第2方向に直交する第3方向に離間している、
請求項2に記載の半導体装置。 - 前記一対の第1側面は、前記接続部材主面に対して傾斜している、
請求項3に記載の半導体装置。 - 前記一対の第1側面がなす角度は、60~120°である、
請求項4に記載の半導体装置。 - 前記第1の突起は、前記一対の第1側面に繋がる第1頂面をさらに有している、
請求項3ないし請求項5のいずれか一項に記載の半導体装置。 - 前記第1頂面は、平坦である、
請求項6に記載の半導体装置。 - 前記第1頂面は、前記接続部材主面に対して傾斜している、
請求項7に記載の半導体装置。 - 前記接続部材と前記第2導電体との間に介在し、前記接続部材と前記第2導電体とを導通させる第2接合層を、さらに備えている、
請求項1ないし請求項8のいずれか一項に記載の半導体装置。 - 前記接続部材は、前記接続部材主面から前記第1方向に突き出た1以上の第2の突起を含んでおり、
前記1以上の第2の突起の各々は、前記第1方向に見て、前記第2接合層に重なる、
請求項9に記載の半導体装置。 - 前記第2の突起は、前記第1方向に見て、前記第1方向に直交する第2方向に延びている、
請求項10に記載の半導体装置。 - 前記第2の突起は、前記接続部材主面から起き上がる一対の第2側面を有しており、
前記一対の第2側面は、前記第1方向および前記第2方向に直交する第3方向に離間している、
請求項11に記載の半導体装置。 - 前記一対の第2側面は、前記接続部材主面に対して傾斜している、
請求項12に記載の半導体装置。 - 前記一対の第2側面がなす角度は、60~120°である、
請求項13に記載の半導体装置。 - 前記第2の突起は、前記一対の第2側面に繋がる第2頂面をさらに有している、
請求項12ないし請求項14のいずれか一項に記載の半導体装置。 - 前記第2接合部の前記第1方向の寸法は、前記第1接合部の前記第1方向の寸法よりも大きい、
請求項1ないし請求項15のいずれか一項に記載の半導体装置。 - 前記連絡部は、前記第1方向に直交する第3方向において、前記第1接合部に重なる、請求項1ないし請求項16のいずれか一項に記載の半導体装置。
- 前記半導体素子は、第3接合層を介して前記第1導電体に導通接合されている、
請求項1ないし請求項17のいずれか一項に記載の半導体装置。 - 前記半導体素子は、パワーMOSFETである、
請求項1ないし請求項18のいずれか一項に記載の半導体装置。 - 前記第1接合層は、焼結金属である、
請求項1ないし請求項19のいずれか一項に記載の半導体装置。 - 前記半導体素子、前記接続部材、前記第1接合層、前記第1導電体の少なくとも一部、および、前記第2導電体の少なくとも一部を覆う封止樹脂をさらに備えている、
請求項1ないし請求項20のいずれか一項に記載の半導体装置。 - 第1方向において互いに反対側を向く素子主面および素子裏面を有しており、前記素子主面に主面電極および前記素子裏面に裏面電極が形成された半導体素子と、
前記素子裏面に対向しており、前記裏面電極が導通接合された第1導電体と、
前記第1導電体と離間して配置されており、前記主面電極に導通する第2導電体と、
前記素子主面と同じ方向を向く接続部材主面を有しており、前記主面電極と前記第2導電体とを接続する接続部材と、
を備えており、
前記接続部材は、前記接続部材主面から前記第1方向に突き出た第1の突起を含み、かつ、第1接合層を介して前記主面電極に接合されており、
前記第1の突起は、前記第1方向に見て前記主面電極に重なり、且つ、前記第1方向に見て前記第1方向に直交する第2方向に延びており、
前記第1の突起は、前記接続部材主面から起き上がる一対の第1側面、および、前記一対の第1側面に繋がる第1頂面を有しており、
前記一対の第1側面は、前記第1方向および前記第2方向に直交する第3方向に離間している、
前記第1頂面は、平坦であり、且つ、前記第1頂面は、前記接続部材主面に対して傾斜している、
半導体装置。 - 第1方向において互いに反対側を向く素子主面および素子裏面を有しており、前記素子主面に主面電極および前記素子裏面に裏面電極が形成された半導体素子と、
前記素子裏面に対向しており、前記裏面電極が導通接合された第1導電体と、
前記第1導電体と離間して配置されており、前記主面電極に導通する第2導電体と、
前記素子主面と同じ方向を向く接続部材主面を有しており、前記主面電極と前記第2導電体とを接続する接続部材と、
を備えており、
前記接続部材は、前記接続部材主面から前記第1方向に突き出た第1の突起を含み、かつ、第1接合層を介して前記主面電極に接合されており、
前記第1の突起は、前記第1方向に見て、前記主面電極に重なり、
前記第1接合層は、焼結金属である、
半導体装置。 - 第1方向において互いに反対側を向く素子主面および素子裏面を有する半導体素子と、
互いに離間して配置された第1導電体および第2導電体と、
前記第1方向の一方を向く接続部材主面を有し、かつ、前記接続部材主面から前記第1方向に突き出た第1の突起を含む接続部材と、
を備え、
前記接続部材を準備する接続部材準備工程と、
前記半導体素子を、前記第1導電体に搭載するマウント工程と、
前記素子主面の上に焼結用金属材料を形成する焼結用金属材料形成工程と、
前記接続部材主面を前記素子主面と同じ方向を向く姿勢であり、かつ、前記第1方向に見て、前記焼結用金属材料と前記第1の突起とが重なるように、前記接続部材の一部を前記焼結用金属材料の上に載置する接続工程と、
前記第1の突起が形成された側から前記接続部材を加圧部材によって加圧し、かつ、加熱することで、前記焼結用金属材料を焼結金属にする加圧加熱工程と、
を有する、半導体装置の製造方法。
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