JP2008243970A - 半導体装置およびその製造方法 - Google Patents
半導体装置およびその製造方法 Download PDFInfo
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- JP2008243970A JP2008243970A JP2007079684A JP2007079684A JP2008243970A JP 2008243970 A JP2008243970 A JP 2008243970A JP 2007079684 A JP2007079684 A JP 2007079684A JP 2007079684 A JP2007079684 A JP 2007079684A JP 2008243970 A JP2008243970 A JP 2008243970A
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- semiconductor device
- mounting member
- semiconductor chip
- element mounting
- sealing resin
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- 239000004065 semiconductor Substances 0.000 title claims abstract description 180
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 37
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- 239000002184 metal Substances 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 claims description 35
- 238000007789 sealing Methods 0.000 claims description 35
- 239000000919 ceramic Substances 0.000 claims description 21
- 239000000758 substrate Substances 0.000 claims description 21
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- 238000003780 insertion Methods 0.000 description 3
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Abstract
【解決手段】フレーム本体3の部分が放熱板7の表面に固着され、そのフレーム本体3に半導体チップ11がダイボンドされる。次に、半導体チップ11の所定の電極とこれに対応するリード端子等とが所定のワイヤ12によって電気的に接続される。次に、半導体チップ11の上方から半導体チップ11を樹脂が覆う態様で金型内にリードフレームがセットされる。熱可塑性の樹脂13を金型内に注入することで半導体チップ11等が封止され、金型から取り出すことで、半導体装置が形成される。
【選択図】図23
Description
本発明の実施の形態1に係る半導体装置の製造方法について説明する。まず、図1、図2および図3に示すように、素子搭載部材としてのリードフレーム2が用意される。リードフレーム2は、たとえば銅(Cu)等の薄板からなり、所定のパターンに打ち抜かれて、半導体チップが搭載されるフレーム本体3の部分、リード端子4となる部分および主電極端子5となる部分が設けられている。これらの部分は、タイバー6によって互いに繋がれている。そのリードフレーム2では、リード端子4となる部分および主電極端子5となる部分がフレーム本体3に対して所定の位置において上方を向くように折り曲げられている。
なお、上述した半導体装置1では、リードフレーム2のフレーム本体3に搭載される半導体チップとして、IGBTやダイオード等の半導体チップ11を例に挙げた。つまり、電力半導体素子のみを例に挙げた。半導体装置1としては、図24に示すように、IGBTやダイオード等の半導体チップ11とともに、半導体装置1の動作を制御する制御回路が形成された制御回路チップ19を併せて搭載するようにしてもよい。制御回路(IC(Integrated Circuit))チップ19が樹脂13に封止されることで、制御回路チップ19が保護されて、半導体装置1の駆動の信頼性を向上させることができる。
ここでは、放熱板と樹脂との密着性の向上が図られる半導体装置の製造方法について説明する。図26および図27に示すように、放熱板として、長手方向の両端部にそれぞれ開口部8が形成された放熱板7が用意される。その後、前述した製造方法と同様にして、IGBTやダイオード等の半導体チップ11がフレーム本体3に接着され(ダイボンド)される。次に、ダイボンドされた半導体チップ11の所定の電極とこれに対応するリード端子4等とが、ワイヤによって電気的に接続される。その後、タイバーの部分がカットされる。
上述した半導体装置1では、放熱板7として所定の位置に開口部8が形成された放熱板7を例に挙げた。放熱板7としては、開口部8の他に、たとえば溝部が形成された放熱板を適用してもよい。この場合には、図30および図31に示すように、長手方向の両端部にそれぞれ溝部9が形成された放熱板7が用意される。この溝部9は樹脂が注入される方向に沿って延在する。
ここでは、素子搭載部材としてセラミックス基板を備えた半導体装置について説明する。まず、図36および図37に示すように、素子搭載部材としてのセラミックス基板15が用意される。セラミックス基板15は、セラミックス基板本体16と所定の銅パターン17を備えている。所定の銅パターン17は、セラミックス基板本体16の表面と裏面の両面に形成されている。
上述した半導体装置では、セラミックス基板が放熱板に固着される態様の半導体装置を例に挙げて説明したが、放熱板を備えないものであってもよい。この場合には、まず、図41および図42に示すように、セラミックス基板本体16の表面に形成された銅パターン17aに対して、はんだ18により半導体チップ11が所定の位置に搭載(ダイボンド)される。一方、セラミックス基板本体16の裏面の銅パターン17bには放熱板は固着されず、銅パターン17bが露出した状態とされる。
ここでは、素子搭載部材としてリードフレームを備え、放熱板を備えない半導体装置について説明する。まず、図46、図47および図48に示すように、素子搭載部材としてのリードフレーム2が用意される。リードフレーム2は所定のパターンに打ち抜かれて、半導体チップが搭載されるフレーム本体3の部分、リード端子4となる部分および主電極端子5となる部分が設けられている。これらの部分は、タイバー6によって互いに繋がれている。
Claims (15)
- 所定の半導体素子が搭載される素子搭載部材と、
前記素子搭載部材の所定の位置に搭載され、前記半導体素子として所定の電力素子を含む半導体チップと、
前記半導体チップに対して所定の位置に上方に向けて立設され、前記半導体チップと電気的に接続された接続端子と、
前記素子搭載部材および前記半導体チップの全体を少なくとも上方から覆うとともに、立設された前記接続端子を上方から覆う部分において突出させる態様で前記素子搭載部材および前記半導体チップを封止する封止樹脂と
を備えた、半導体装置。 - 前記素子搭載部材と前記接続端子はリードフレームからなる、請求項1記載の半導体装置。
- 前記素子搭載部材はセラミックス基板であり、
前記接続端子はリードフレームからなる、請求項1記載の半導体装置。 - 前記素子搭載部材に対して前記半導体チップが搭載された側と反対の側には放熱板が配設された、請求項1〜3のいずれかに記載の半導体装置。
- 前記放熱板において前記封止樹脂と接触する部分には、封止樹脂が充填される凹部が形成された、請求項4記載の半導体装置。
- 前記凹部は前記封止樹脂の注入方向に沿って延在するように形成された、請求項5記載の半導体装置。
- 前記凹部は、前記放熱板における前記素子搭載部材が配設された第1面から前記第1面と対向する第2面に向って断面積が増加する態様で形成された、請求項5または6に記載の半導体装置。
- 半導体素子が搭載される素子搭載部材を用意する工程と、
接続端子となるパターンを含むリードフレームを用意する工程と、
前記素子搭載部材に前記半導体素子として所定の電力素子を含む半導体チップを搭載する工程と、
前記半導体チップと前記接続端子とを所定の金属線によって接続する工程と、
前記半導体チップに対して、前記接続端子が所定の位置に上方に向けて立設するように前記リードフレームを加工する工程と、
前記素子搭載部材および前記半導体チップを封止するための所定の封止樹脂が注入される所定の金型内に、前記素子搭載部材および前記半導体チップの全体を少なくとも上方から覆うとともに、立設された前記接続端子を上方から覆う部分において突出させる態様で前記リードフレームおよび前記素子搭載部材をセットする工程と、
前記金型内に前記封止樹脂を注入する工程と、
前記金型から前記封止樹脂によって封止された前記半導体チップを取出す工程と
を備えた、半導体装置の製造方法。 - 前記素子搭載部材を用意する工程および前記リードフレームを用意する工程では、前記リードフレームとして、前記接続端子とタイバーによって繋がれた前記素子搭載部材としてのフレーム本体を含むリードフレームが用意される、請求項8記載の半導体装置の製造方法。
- 前記封止樹脂を注入する工程の前に、前記タイバーを除去する工程を備え、
前記封止樹脂を注入する工程では、前記タイバーが除去された状態で前記封止樹脂が注入される、請求項9記載の半導体装置の製造方法。 - 前記封止樹脂を注入する工程では、前記接続端子と前記フレーム本体が前記タイバーで繋がれた状態で前記封止樹脂が注入され、
前記半導体チップを取出す工程の後、前記封止樹脂から突出している前記タイバーを除去する工程を備えた、請求項9記載の半導体装置の製造方法。 - 前記素子搭載部材を用意する工程では、前記素子搭載部材としてセラミックス基板が用意される、請求項8記載の半導体装置の製造方法。
- 前記素子搭載部材を用意する工程と前記半導体チップを搭載する工程との間に、前記素子搭載部材を放熱板における一方の面に搭載する工程を備えた、請求項8〜12のいずれかに記載の半導体装置の製造方法。
- 前記素子搭載部材を前記放熱板に搭載する工程では、前記放熱板として、前記封止樹脂が充填される凹部を形成した放熱板が用いられる、請求項13記載の半導体装置の製造方法。
- 前記放熱板の前記凹部は所定の方向に延在するように形成され、
前記封止樹脂を注入する工程では、前記封止樹脂は前記所定の方向に沿って注入される、請求項14記載の半導体装置の製造方法。
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Also Published As
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KR100909060B1 (ko) | 2009-07-23 |
KR20080087632A (ko) | 2008-10-01 |
JP5252819B2 (ja) | 2013-07-31 |
US20080283983A1 (en) | 2008-11-20 |
US8093692B2 (en) | 2012-01-10 |
CN101276799B (zh) | 2010-06-02 |
CN101276799A (zh) | 2008-10-01 |
US7892893B2 (en) | 2011-02-22 |
US20110108964A1 (en) | 2011-05-12 |
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