JPWO2014141346A1 - 半導体装置 - Google Patents
半導体装置 Download PDFInfo
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Abstract
Description
図1は、この発明の実施の形態1における半導体装置の構造を示す断面模式図である。なお、図1は半導体装置の構造を模式的に示した断面図であるため、各部の位置関係や各種配線や部品等は概略的に示されている。
一方、モールド樹脂10の線膨張係数がヒートシンク9の線膨張係数よりも小さい範囲においては、モールド成形後に成形金型から取り出して室温まで冷却した場合、半導体装置100の凸反りが抑制され、反り量が小さくなる。モールド樹脂10の線膨張係数をさらに小さくしすぎると、半導体装置100は逆に凹反りとなってしまう。
本実施の形態2においては、実施の形態1で用いたプリント配線板13の一部をモールド樹脂の外部へ突出させた点が異なる。このように、プリント配線板13の一部をモールド樹脂10の外部へ突出させることで、樹脂封止時の制御回路基板5の位置決めを容易に行うことが可能となる。
本実施の形態3においては、実施の形態1で用いたヒートシンク9を凹凸が形成されたフィン付きヒートシンク12とした点が異なる。このように、ヒートシンクに凹凸を形成したことで放熱性を向上させることが可能となる。
本実施の形態4においては、実施の形態1、実施の形態2、および実施の形態3で用いたヒートシンク9またはフィン付きヒートシンク12の絶縁層8が設けられた面とは反対側(裏面側)の外周部(端部)に段差部である段差13を設けた点が異なる。このように、ヒートシンクの裏面側の外周部(端部)に段差部を形成したことで放熱性を損なわず信頼性を向上させることが可能となる。
モールド樹脂の硬化後の線膨張係数は、充填材となるシリカの充填量を増減することにより、調整可能である。本実施例では、充填材として溶融シリカを用い、充填量を80重量%充填し、線膨張係数を15×10−6(1/K)に調整した。
本実施例では、充填材として溶融シリカを用い、充填量を77重量%充填し、線膨張係数を17×10−6(1/K)に調整した。
本実施例では、充填材として溶融シリカを用い、充填量を73重量%充填し、線膨張係数を21×10−6(1/K)に調整した。
本実施例では、充填材として溶融シリカと結晶シリカを用い、充填量を73重量%充填し、線膨張係数を23×10−6(1/K)に調整した。
本実施例では、アルミベースの厚みを0.1mmとした。モールド樹脂の充填材として溶融シリカを用い、充填量を77重量%充填し、線膨張係数を17×10−6(1/K)に調整した。
本実施例では、アルミベースの厚みを1mmとした。モールド樹脂の充填材として溶融シリカを用い、充填量を77重量%充填し、線膨張係数を17×10−6(1/K)に調整した。
本実施例では、アルミベースの厚みを2mmとした。モールド樹脂の充填材として溶融シリカを用い、充填量を77重量%充填し、線膨張係数を17×10−6(1/K)に調整した。
本実施例では、アルミベースの厚みを3mmとした。モールド樹脂の充填材として溶融シリカを用い、充填量を77重量%充填し、線膨張係数を17×10−6(1/K)に調整した。
本実施例では、アルミベースの厚みを5mmとした。モールド樹脂の充填材として溶融シリカを用い、充填量を77重量%充填し、線膨張係数を17×10−6(1/K)に調整した。
本実施例では、アルミベースの厚みを10mmとした。モールド樹脂の充填材として溶融シリカを用い、充填量を77重量%充填し、線膨張係数を17×10−6(1/K)に調整した。
本比較例では、充填材として溶融シリカを用い、充填量を86重量%充填し、線膨張係数を10×10−6(1/K)に調整した。
本比較例では、充填材として溶融シリカを用い、充填量を83重量%充填し、線膨張係数を13×10−6(1/K)に調整した。
本比較例では、充填材として溶融シリカと結晶シリカを用い、充填量を73重量%充填し、線膨張係数を25×10−6(1/K)に調整した。
Claims (10)
- 一方の面に半導体素子が搭載された金属部材と、
前記金属部材の他方の面側に絶縁層を介して配置された金属板と、
前記半導体素子と電気的に接続された電気部品が搭載されたプリント配線板と、
前記金属部材と前記プリント配線板と前記金属板とを一体的に封止する線膨張係数が15〜23×10−6(1/K)である封止樹脂と、
を備えたことを特徴とする半導体装置。 - 前記封止樹脂のガラス転移点温度は、使用環境温度よりも高いことを特徴とする請求項1に記載の半導体装置。
- 前記プリント配線板は、前記金属部材と対向して配置されたことを特徴とする請求項1または請求項2に記載の半導体装置。
- 前記プリント配線板の一部を前記封止樹脂の外部へ突出させたことを特徴とする請求項1から請求項3のいずれか1項に記載の半導体装置。
- 前記プリント配線板の両面に前記電気部品を配置したことを特徴とする請求項1から請求項4のいずれか1項に記載の半導体装置。
- 前記金属板の少なくとも一辺の長さが50mm以上であることを特徴とする請求項1から請求項5のいずれか1項に記載の半導体装置。
- 前記金属板の前記金属部材が配置された面の反対側の面に凹凸を設けたことを特徴とする請求項1から請求項6のいずれか1項に記載の半導体装置。
- 前記金属板の厚さは、前記プリント配線板の厚さよりも厚いことを特徴とする請求項6に記載の半導体装置。
- 前記金属板の前記金属部材が配置された面の反対側の面の端部に段差部を設けたことを特徴とする請求項1から請求項8のいずれか1項に記載の半導体装置。
- 前記金属板の前記金属部材が配置された面の反対側の面の外周部に段差部を設けたことを特徴とする請求項1から請求項9のいずれか1項に記載の半導体装置。
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JP6279162B2 (ja) * | 2015-12-25 | 2018-02-14 | 三菱電機株式会社 | 半導体装置およびその製造方法 |
TWI730604B (zh) * | 2019-01-22 | 2021-06-11 | 美商莫仕有限公司 | 使用專用電子封裝製造工藝的智能連接器及其製造方法 |
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