JP6971952B2 - 半導体装置 - Google Patents
半導体装置 Download PDFInfo
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- JP6971952B2 JP6971952B2 JP2018209356A JP2018209356A JP6971952B2 JP 6971952 B2 JP6971952 B2 JP 6971952B2 JP 2018209356 A JP2018209356 A JP 2018209356A JP 2018209356 A JP2018209356 A JP 2018209356A JP 6971952 B2 JP6971952 B2 JP 6971952B2
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- H01L24/42—Wire connectors; Manufacturing methods related thereto
- H01L24/47—Structure, shape, material or disposition of the wire connectors after the connecting process
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- H01L23/29—Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection characterised by the material, e.g. carbon
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Description
図1は、実施の形態1に係る半導体装置100の側面図である。半導体装置100は、例えば、電力用半導体装置である。図1において、X方向、Y方向およびZ方向は、互いに直交する。以下の図に示されるX方向、Y方向およびZ方向も、互いに直交する。以下においては、X方向と、当該X方向の反対の方向(−X方向)とを含む方向を「X軸方向」ともいう。また、以下においては、Y方向と、当該Y方向の反対の方向(−Y方向)とを含む方向を「Y軸方向」ともいう。また、以下においては、Z方向と、当該Z方向の反対の方向(−Z方向)とを含む方向を「Z軸方向」ともいう。
以上説明したように、本実施の形態によれば、ワイヤW1aは、半導体素子S1aに接続されている接点n1と、半導体素子S1bに接続されている接点n2とを有する。ワイヤW1bは、半導体素子S1aに接続されている接点n3と、半導体素子S1bに接続されている接点n4とを有する。
以下においては、本変形例の構成を「構成Ctm1」ともいう。構成Ctm1は、熱伝導率の低い樹脂を使用した構成である。構成Ctm1は、構成Ct1に適用される。
以上説明したように、本変形例の構成Ctm1によれば、樹脂R1aの熱伝導率は、樹脂R1の熱伝導率より低い。すなわち、樹脂R1aの放熱性は、樹脂R1の放熱性より低い。最上部T1a,T1b,T1cは、樹脂R1aにより封止されている。
以下においては、本変形例の構成を「構成Ctm2」ともいう。構成Ctm2は、パッケージP1の上面に窪みを設けた構成である。構成Ctm2は、構成Ct1および構成Ctm1の全てまたは一部に適用される。
以上説明したように、本変形例の構成Ctm2によれば、パッケージP1の上面P1sのうち、最上部T1a,T1b,T1cの上方の領域には窪みV1が設けられている。窪みV1の底が、最上部T1a,T1b,T1cの上方を覆うように、当該窪みV1は設けられる。そのため、パッケージP1における窪み下部の厚みは薄い。したがって、窪み下部の物理的強度は小さい。
以下においては、本変形例の構成を「構成Ctm3」ともいう。構成Ctm3は、ヤング率の低い樹脂を使用した構成である。構成Ctm3は、構成Ct1に適用される。
以上説明したように、本変形例の構成Ctm3によれば、樹脂R1bのヤング率は、樹脂R1のヤング率より小さい。すなわち、樹脂R1bの放熱性は、樹脂R1の放熱性より低い。最上部T1a,T1b,T1cは樹脂R1bに接触している。この場合、ワイヤW1aのうち樹脂R1bに接触していない部分は、樹脂R1により封止されている。また、ワイヤW1bのうち樹脂R1bに接触していない部分は、樹脂R1により封止されている。また、ワイヤW1cのうち樹脂R1bに接触していない部分は、樹脂R1により封止されている。
Claims (4)
- 第1半導体素子と、
平面視において、前記第1半導体素子に隣接している第2半導体素子と、を備え、
前記第1半導体素子は、第1ワイヤおよび第2ワイヤにより、前記第2半導体素子に接続されており、
前記第1ワイヤは、
前記第1半導体素子に接続されている第1接点と、
前記第2半導体素子に接続されている第2接点とを有し、
前記第2ワイヤは、
前記第1半導体素子に接続されている第3接点と、
前記第2半導体素子に接続されている第4接点とを有し、
前記第1ワイヤのうち前記第1接点と前記第2接点との間の部分である第1線状部は、起伏を有し、
前記第2ワイヤのうち前記第3接点と前記第4接点との間の部分である第2線状部は、起伏を有し、
前記第1線状部の第1最上部は、前記第2線状部の第2最上部に隣接しており、
前記第1最上部と前記第2最上部との間隔は、前記第1接点と前記第3接点との間隔より狭く、
前記第1最上部と前記第2最上部との間隔は、前記第2接点と前記第4接点との間隔より狭い
半導体装置。 - 前記半導体装置は、さらに、第1樹脂および第2樹脂を備え、
前記第2樹脂の熱伝導率は、前記第1樹脂の熱伝導率より低く、
前記第1最上部および前記第2最上部は、前記第2樹脂により封止されており、
前記第1ワイヤのうち前記第2樹脂により封止されていない部分は、前記第1樹脂により封止されており、
前記第2ワイヤのうち前記第2樹脂により封止されていない部分は、前記第1樹脂により封止されている
請求項1に記載の半導体装置。 - 前記第1ワイヤおよび前記第2ワイヤは、パッケージにより封止されており、
前記パッケージは、第1樹脂で構成されており、
前記パッケージの上面のうち、前記第1最上部および前記第2最上部の上方の領域には窪みが設けられている
請求項1または2に記載の半導体装置。 - 前記半導体装置は、さらに、第1樹脂および第3樹脂を備え、
前記第3樹脂のヤング率は、前記第1樹脂のヤング率より小さく、
前記第1最上部および前記第2最上部の状態は、当該第1最上部および当該第2最上部が前記第3樹脂に接触している第1状態、または、当該第1最上部および当該第2最上部が当該第3樹脂内に存在する第2状態であり、
前記第1ワイヤのうち前記第3樹脂に接触していない部分、または、当該第1ワイヤのうち当該第3樹脂内に存在していない部分は、前記第1樹脂により封止されており、
前記第2ワイヤのうち前記第3樹脂に接触していない部分、または、当該第2ワイヤのうち当該第3樹脂内に存在していない部分は、前記第1樹脂により封止されている
請求項1に記載の半導体装置。
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