JP6256145B2 - 半導体装置及びその製造方法 - Google Patents
半導体装置及びその製造方法 Download PDFInfo
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- JP6256145B2 JP6256145B2 JP2014064193A JP2014064193A JP6256145B2 JP 6256145 B2 JP6256145 B2 JP 6256145B2 JP 2014064193 A JP2014064193 A JP 2014064193A JP 2014064193 A JP2014064193 A JP 2014064193A JP 6256145 B2 JP6256145 B2 JP 6256145B2
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- heat sink
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- electrode
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Description
Claims (7)
- 一面(34a)及び該一面と反対の裏面(34b)を有し、第1ヒートシンク(36U,36L)と、該第1ヒートシンクと分離されたアイランド(38U,38L)及び制御端子(42U,42L)とが形成されたリードフレーム(34)と、
前記裏面との対向面に第1主電極(16U,16L)を有し、前記対向面と反対の面に制御電極(30U,30L)及び前記第1主電極と対をなす第2主電極(18U,18L)を有し、前記第1主電極が前記第1ヒートシンクと接続された第1半導体チップ(10U,10L)と、
前記第1半導体チップの制御電極形成面に対向配置され、前記第2主電極と接続された第2ヒートシンク(48U,48L)と、
前記第1半導体チップの駆動を制御するために前記裏面における前記アイランドに固定され、第1ボンディングワイヤ(62)を介して前記制御電極と接続されるとともに、第2ボンディングワイヤ(64)を介して前記制御端子と接続された第2半導体チップ(60U,60L)と、
接合部材(66)を介して前記制御端子に実装された受動部品(68)と、
各ヒートシンクと前記第1半導体チップとの積層方向において、前記第1ヒートシンク側の表面(32a)と前記第2ヒートシンク側の表面(32b)を有し、各半導体チップ、前記受動部品、各ヒートシンクの少なくとも一部、各ボンディングワイヤ、前記アイランド、及び受動部品実装部分を含む前記制御端子の一部を一体的に封止する樹脂成形体(32)と、を備え
前記リードフレームの一部分が他の部分に対して曲げ加工されて、前記裏面(34b)において、前記アイランドの前記第2半導体チップを搭載する面が、前記第1ヒートシンクの前記第1半導体チップを搭載する面及び前記制御端子の受動部品実装部分よりも、前記樹脂成形体の第1ヒートシンク側表面(32a)に近い位置とされており、
前記受動部品が、前記一面(34a)における前記制御端子の受動部品実装部分に実装されていることを特徴とする半導体装置。 - 複数の制御端子の一部が前記アイランドと連結されており、
前記アイランドと連結された前記制御端子は、前記アイランドとの連結端と前記受動部品実装部分との間に、曲げ加工部(70)を有することを特徴とする請求項1に記載の半導体装置。 - 前記第1ボンディングワイヤとの接続面が、前記第1半導体チップと前記第2半導体チップとで面一となっていることを特徴とする請求項1又は請求項2に記載の半導体装置。
- 前記一面(34a)における前記第1ヒートシンクの部分(36ua,36La)が、前記樹脂成形体から露出されていることを特徴とする請求項1〜3いずれか1項に記載の半導体装置。
- 一面(34a)及び該一面と反対の裏面(34b)を有し、第1ヒートシンク(36U,36L)と、該第1ヒートシンクと分離されたアイランド(38U,38L)及び制御端子(42U,42L)とが形成されたリードフレーム(34)と、
前記裏面との対向面に第1主電極(16U,16L)を有し、前記対向面と反対の面に制御電極(30U,30L)及び前記第1主電極と対をなす第2主電極(18U,18L)を有し、前記第1主電極が、はんだ(44)を介して前記第1ヒートシンクと接続された第1半導体チップ(10U,10L)と、
前記第1半導体チップの制御電極形成面に対向配置され、はんだ(52)を介して前記第2主電極と接続された第2ヒートシンク(48U,48L)と、
前記第1半導体チップの駆動を制御するために前記裏面における前記アイランドに固定され、第1ボンディングワイヤ(62)を介して前記制御電極と接続されるとともに、第2ボンディングワイヤ(64)を介して前記制御端子と接続された第2半導体チップ(60U,60L)と、
接合部材(66)を介して前記制御端子に実装された受動部品(68)と、
各ヒートシンクと前記第1半導体チップとの積層方向において、前記第1ヒートシンク側の表面(32a)と前記第2ヒートシンク側の表面(32b)を有し、各半導体チップ、前記受動部品、各ヒートシンクの少なくとも一部、各ボンディングワイヤ、前記アイランド、及び受動部品実装部分を含む前記制御端子の一部を一体的に封止する樹脂成形体(32)と、を備える半導体装置の製造方法であって、
前記裏面(34b)において、前記アイランドの前記第2半導体チップの搭載面が、前記第1ヒートシンクの前記第1半導体チップの搭載面及び前記制御端子の受動部品実装部分よりも、前記樹脂成形体の第1ヒートシンク側表面(32a)に近い位置となるように曲げ加工された前記リードフレームを用い、
前記第1ヒートシンクと前記第1半導体チップとの間のはんだ(44)をリフローして、前記リードフレーム及び前記半導体チップが一体化されてなる接続体(76)を形成するとともに、前記アイランド上に前記第2半導体チップを固定する第1リフロー工程と、
前記第1リフロー工程後、前記制御電極と前記第2半導体チップを前記第1ボンディングワイヤを介して接続するとともに、前記第2半導体チップと各制御端子とを前記第2ボンディングワイヤを介して接続するワイヤボンディング工程と、
前記ワイヤボンディング工程後、前記第1リフロー工程の状態から前記接続体を反転させて前記第2ヒートシンク上に前記接続体を配置し、前記第2ヒートシンクと前記接続体との間のはんだ(52)をリフローするとともに、前記一面(34a)における前記制御端子の受動部品実装部分に、前記接合部材を介して前記受動部品を実装する第2リフロー工程と、
前記第2リフロー工程後、前記樹脂成形体を成形する成形工程と、を備えることを特徴とする半導体装置の製造方法。 - 前記第1ボンディングワイヤとの接続面が、前記第1半導体チップと前記第2半導体チップとで面一となるように曲げ加工された前記リードフレームを用いることを特徴とする請求項5に記載の半導体装置の製造方法。
- 前記一面(34a)における前記第1ヒートシンクの部分(36ua,36La)を、前記樹脂成形体から露出させることを特徴とする請求項5又は請求項6に記載の半導体装置の製造方法。
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