JPWO2016052183A1 - 半導体モジュール - Google Patents
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Abstract
Description
矩形状のベース板と、このベース板上に半導体チップを駆動させる端子、例えばゲート端子と半導体チップを含む回路を形成したセラミック基板等の基板と、前記ベース板に取り付けられ、前記基板を内部に収納する直方体形状の樹脂製のケースと、上端を前記ケースの上面に露出するようにして下端が前記基板に固定された複数の外部端子と、を備えている。
長手方向に沿って前記ケースの前面を上辺から切り抜いた第1のケース開口部と、
長手方向に沿って前記ケースの背面を上辺から切り抜いた第2のケース開口部と
前記第1のケース開口部と前記第2のケース開口部の間の前記ケースの上面に設けられ、長手方向に沿って前記複数の外部端子を、その上端を露出させて保持する外部端子保持部と、をさらに備えている。
前記外部端子は、前記上端と前記下端の間に設けられた第1の垂直片を備え
前記外部端子保持部は、前記外部端子の前記第1の垂直片を水平方向への移動を規制して垂直方向に摺動案内する第1の垂直片保持部を備え、
前記外部端子は、前記ケースが前記ベース板に取り付けられる前の状態で、前記外部端子保持部を介して垂直方向に移動可能で且つ水平方向に移動規制されている。
前記第1の垂直片保持部は、貫通孔の一面を開口して形成された挿入口と、前記挿入口の左右両側部に形成された複数の第1の案内溝とを有し、
前記複数の第1の案内溝間の幅は、前記外部端子の前記第1の垂直片が摺動案内可能な幅を備え、前記挿入口の幅は、前記第1の垂直片の幅より狭く前記狭幅部以上の幅を備えている。
前記外部端子の前記第1の垂直片を前記垂直片案内部に挿入したとき、前記矩形孔に前記矩形突起が係合することで、前記外部端子を前記外部端子保持部に保持する。
前記ケースは、
前記ケース内に上下方向に形成された第1の仕切り壁と、
前記第1の仕切り壁によって仕切られた中央室と応力吸収室とを備え、
前記中央室には、前記基板が配置され、
前記応力吸収室は、前記封止材の熱応力による体積膨張分以上の大きさの空間部と、上方に設けられた外部と連通する小孔とを備える。
外部端子3a,3cは、垂直片31a,31cを折曲して水平片33a,33cを形成し、これを下方に折曲して下部垂直片34a,34cを形成し、次いで最下端を折曲して半田付部32a,32cを形成している。
2−ベース板
3(3a、3b、3c)−外部端子
4−ケース
5−蓋体
6−セラミック基板
7−ゲート端子
9a−中央室
9b−応力吸収室
9c−ゲート端子室
40−ケース開口部
Claims (21)
- 矩形状のベース板と、
このベース板上に半導体チップを駆動する駆動端子と前記半導体チップを含む回路を形成した基板と、
前記ベース板に取り付けられ、前記基板を内部に収納する直方体形状の樹脂製のケースと、
上端を前記ケースの上面に露出するようにして下端が前記基板に固定された複数の外部端子と、を備え、
前記ケースは、
長手方向に沿って前記ケースの前面を上辺から切り抜いた第1のケース開口部と、
長手方向に沿って前記ケースの背面を上辺から切り抜いた第2のケース開口部と
前記第1のケース開口部と前記第2のケース開口部の間の前記ケースの上面に設けられ、長手方向に沿って前記複数の外部端子を、その上端を露出させて保持する外部端子保持部と、
前記第1のケース開口部又は前記第2のケース開口部から前記基板上面に注入された封止材と、
を備える半導体モジュール。 - 前記封止材は、ゲル及び樹脂の何れか一方又は両方を含む、請求項1記載の半導体モジュール
- 前記ケースは、
前記基板が備えられる中央室と、
前記中央室の右側又は左側の一方に位置する第1の側部に、前記封止材の熱応力による体積膨張分以上の大きさの空間部を有する応力吸収室を備え、
前記中央室の右側又は左側の他方に位置する第2の側部に、前記駆動端子が引き回される駆動端子室を備える、請求項1に記載の半導体モジュール。 - 前記応力吸収室は上面又は側面、又は上面から側面にかけて形成された小孔を備え、前記駆動端子室は前記駆動端子を前記ケースの外部に引き出す端子開口を備える、請求項3に記載の半導体モジュール。
- 前記第1のケース開口部と前記第2のケース開口部と前記外部端子保持部は、前記ケースの前記中央室に備えられる、請求項3に記載の半導体モジュール。
- 前記ケースを覆う蓋体をさらに備え、
前記蓋体は、
前記複数の外部端子が露出する端子引出部を形成した上面と、
前記上面から下方に向けて前記第1のケース開口部と前記第2のケース開口部を覆うカバーとを備える、請求項1に記載の半導体モジュール。 - 前記蓋体は、前記カバーの下部に前記封止材に届く脚部を備えた請求項6記載の半導体モジュール。
- 前記外部端子保持部の一部に凹部又は凸部を備え、前記蓋体の一部に前記凹部又は凸部と組み合わせられる凸部又は凹部を備える、請求項6に記載の半導体モジュール。
- 前記外部端子は、前記上端と前記下端の間に設けられた第1の垂直片を備え
前記外部端子保持部は、前記外部端子の前記第1の垂直片を水平方向への移動を規制して垂直方向に摺動案内する第1の垂直片保持部を備え、
前記外部端子は、前記ケースが前記ベース板に取り付けられる前の状態で、前記外部端子保持部を介して垂直方向に移動可能で且つ水平方向に移動規制されている、請求項1記載の半導体モジュール。 - 前記外部端子は、前記第1の垂直片に連続して形成された前記第1の垂直片の幅より狭い幅の狭幅部を有し、
前記第1の垂直片保持部は、貫通孔の一面を開口して形成された挿入口と、前記挿入口の左右両側部に形成された第1の案内溝とを有し、
前記第1の案内溝間の幅は、前記外部端子の前記第1の垂直片が摺動案内可能な幅を備え、前記挿入口の幅は、前記第1の垂直片の幅より狭く前記狭幅部以上の幅を備えている、請求項9記載の半導体モジュール。 - 前記狭幅部は、前記外部端子の前記第1の垂直片と前記下端との間に形成されている、請求項10記載の半導体モジュール。
- 前記外部端子保持部は、前記外部端子の前記上端が露出される端子面を有し、
前記外部端子は、前記第1の垂直片の前記上端が折曲されて形成される端子部を有し、該端子部は前記端子面に沿って配置される請求項10記載の半導体モジュール。 - 前記外部端子は、前記第1の垂直片に対向するように前記端子部が垂直方向に折り曲げられて形成された第2の垂直片を有し、
前記外部端子保持部は、前記第2の垂直片を水平方向への移動を規制して垂直方向に摺動案内する第2の垂直片保持部を備え、
前記第2の垂直片保持部は、前記第2の垂直片が摺動案内可能な幅の第2の案内溝を備えている、請求項12記載の半導体モジュール。 - 前記外部端子は、前記第1の垂直片を折曲させた水平片に矩形孔を備え、前記外部端子保持部は、前記ケース内部に矩形突起を備え、
前記外部端子の前記第1の垂直片を前記垂直片案内部に挿入したとき、前記矩形孔に前記矩形突起が係合することで、前記外部端子を前記外部端子保持部に保持する、請求項9記載の半導体モジュール。 - 前記ケースは、
前記ケース内に上下方向に形成された第1の仕切り壁と、
前記第1の仕切り壁によって仕切られた中央室と応力吸収室とを備え、
前記中央室には、前記基板が配置され、
前記応力吸収室は、前記封止材の熱応力による体積膨張分以上の大きさの空間部と、上方に設けられた外部と連通する小孔とを備える、請求項1記載の半導体モジュール。 - 前記ケースは、前記第1の仕切り壁の下部に形成された封止材流入孔を備え、
前記封止材流入孔の高さは、前記封止材で形成される層の高さよりも低い、請求項15記載の半導体モジュール。 - 前記複数の外部端子の各外部端子の前記上端には端子部が形成され、
前記外部端子保持部は、前記各外部端子の前記端子部が配置される複数の端子面と、前記複数の端子面のうち隣接する端子面間に形成された複数の領域とを備え、前記複数の領域の少なくとも1つの領域に小孔を備えた、請求項1記載の半導体モジュール。 - 前記ケースは、
前記ケース内に上下方向に形成された第2の仕切り壁と、
前記第2の仕切り壁によって前記中央室と仕切られた駆動端子室とを備え、
前記駆動端子室は、駆動端子が引き回され、さらに前記駆動端子を外部に露出させる駆動端子開口を備えた、請求項15記載の半導体モジュール。 - 前記ケースは、前記第2の仕切り壁の下部に形成され、前記駆動端子が引き回される駆動端子孔を備え、
前記駆動端子孔の高さは、前記封止材で形成される層よりも高い、請求項18記載の半導体モジュール。 - 前記封止材の上方を覆う絶縁封止層を備える、請求項15記載の半導体モジュール。
- 前記絶縁樹脂層は樹脂を熱硬化させて形成された樹脂層である、請求項20記載の半導体モジュール。
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