JP2017005259A - 電力用半導体装置 - Google Patents
電力用半導体装置 Download PDFInfo
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Abstract
Description
図1は、本発明の実施の形態1にかかる電力用半導体装置の構成を説明するためのもので、図1(a)は電力用半導体装置の部分平面図、図1(b)は図1(a)と同じ部分を示す平面図であるが、封止樹脂およびインタポーザ基板の基材部分を透過させた場合の平面図、図1(c)は封止樹脂部分を除いた状態での、図1(b)のC1−C2線(平行線)による異なる切断位置を含む断面図である。
本実施の形態2では、実施の形態1と較べてインタポーザ基板の支持構造を変え、さらに支持構造を利用して電気接続経路も変更したものである。図2は本実施の形態2にかかる電力用半導体装置の構成を説明するための部分断面図で、実施の形態1における図1(c)に対応するものであるが、切断位置は図1(b)のC2線延長した部分に対応する。図中、実施の形態1で説明したものと同様のものには同様の符号を付して説明を省略する。
本実施の形態3では、上記実施の形態1および2と較べて、電力用半導体素子の表面電極とインタポーザ基板との電気接続部材を変更したものである。さらに、実施の形態2と較べてインタポーザ基板とヒートスプレッダの電気接続する部分の構造を変更したものである。図3は本実施の形態3にかかる電力用半導体装置の構成を説明するための部分断面図で、実施の形態2における部分断面図に対応する部分である。図中、実施の形態2で説明したものと同様のものには同様の符号を付して説明を省略する。
本実施の形態4では、上記実施の形態1〜3と較べて、ヒートスプレッダが絶縁体によって複数の独立板に分割されており、それぞれの独立板に搭載された電力用半導体素子間の接続を、インタポーザ基板の配線を介さずに、直接ワイヤボンドで行うように変更したものである。さらにヒートスプレッダの突出部を電気的に絶縁して複数に分割することで、それぞれを外部電極として活用できるように変更したものである。図4は本実施の形態4にかかる電力用半導体装置の構成を説明するための部分断面図で、実施の形態2における部分断面図に対応する部分である。図中、実施の形態1〜3で説明したものと同様のものには同様の符号を付して説明を省略する。
21C:主電力用電極(素子電極)、 21E:裏面電極、
3:インタポーザ基板(プリント基板)、 3a:開口部、
31:基材、 32:電極パターン、
32p:ボンディング電極(第2の接合部)、
32j:接合電極(第2の接合部)、
33:裏側電極パターン(電極部)、
34:貫通孔の電極(電極部)、 35:ソルダレジスト、
4:ヒートスプレッダ(伝熱板)、 4s:支持部、
4p:突出部、 5:ボンディングワイヤ(配線部材)、
8:絶縁層、 9:放熱部材、 51:電極部材(配線部材)、
51t:底部(平坦部)、 51j:端子部。
Claims (9)
- 放熱部材と、
一方の面に、絶縁層を介して前記放熱部材が接合された伝熱板と、
前記伝熱板の他方の実装面に接合された電力用半導体素子と、
前記実装面上に配置されたスペーサを介し、前記実装面に対し、所定の間隔をあけて前記伝熱板と対向するように配置され、前記伝熱板への対向面の反対側の面に電極パターンが形成されるとともに、前記電極パターンの近傍に開口部が設けられたプリント基板と、
前記電力用半導体素子の表面に形成された主電力用電極上の第1の接合部に一端が接合され、他端が前記電極パターンのうち主電力用電極パターン上の第2の接合部に接合された第1配線部材と、
前記電力用半導体素子の表面に形成された制御用電極上の第3の接合部に一端が接合され、他端が前記電極パターンのうち制御用電極パターン上の第4の接合部に接合された第2配線部材と、
を備え、
前記主電力用電極から前記プリント基板に向かって前記実装面の垂直方向に延びる空間に、前記第2の接合部及び第4の接合部の少なくとも一部が入るとともに、前記開口部から前記主電力用電極に向かって前記垂直方向に延びる空間に、前記第1の接合部及び第3の接合部が包含されるように、前記主電力用電極パターン及び制御用電極パターンと前記開口部が配置されていることを特徴とする電力用半導体装置。 - 放熱部材と、
一方の面に、絶縁層を介して前記放熱部材が接合された伝熱板と、
前記伝熱板の他方の実装面に接合された電力用半導体素子と、
前記伝熱板の端部が前記実装面から立ちあげられ、前記端部を被覆するように形成さた絶縁性のスペーサを介して、所定の間隔をあけて前記伝熱板と対向するように配置され、前記伝熱板への対向面の反対側の面に電極パターンが形成されるとともに、前記電極パターンの近傍に開口部が設けられたプリント基板と、
前記電力用半導体素子の表面に形成された主電力用電極の第1の接合部に一端が接合され、他端が前記電極パターンのうち主電力用電極パターンの第2の接合部に接合された第1配線部材と、
前記電力用半導体素子の表面に形成された制御用電極の第3の接合部に一端が接合され、他端が前記電極パターンのうち制御用電極パターンの第4の接合部に接合された第2配線部材と、
を備え、
前記主電力用電極から前記プリント基板に向かって前記実装面の垂直方向に延びる空間に、前記第2の接合部及び第4の接合部の少なくとも一部が入るとともに、前記開口部から前記主電力用電極に向かって前記垂直方向に延びる空間に、前記第1の接合部及び第3の接合部が包含されるように、前記主電力用電極パターン及び制御用電極パターンと前記開口部が配置されていることを特徴とする電力用半導体装置。 - 前記第1及び第2配線部材を含むように、前記伝熱板と前記プリント基板との間から前記開口部を介して前記主電力用電極パターンの第2の接合部及び前記制御用電極パターンの第4の接合部までが樹脂の封止体で封止されており、前記樹脂の弾性率に比べて前記スペーサの弾性率が高いことを特徴とする請求項1または2に記載の電力用半導体装置。
- 前記プリント基板と前記放熱部材とが止め部材により固定されていることを特徴とする請求項1から3のいずれか1項に記載の電力用半導体装置。
- 前記第1配線部材と前記第2配線部材の行程長のうち、前記電力用半導体素子表面上の面内の延在方向の長さが、前記主力用電極パターンの中心から、前記延在方向の前記主力用電極パターン端までの長さよりも短いことを特徴とする請求項1から4のいずれか1項に記載の電力用半導体装置。
- 前記第1配線部材および前記第2配線部材は、アルミニウムのボンディングワイヤであることを特徴とする請求項1から5のいずれか1項に記載の電力用半導体装置。
- 前記開口部は縦長形状であり、前記縦長方向に配列する前記第1の接合部と前記第3の少なくとも一部が前記開口部から露出するように設置されていることを特徴とする請求項1から6のいずれか1項に記載の電力用半導体装置。
- 前記電力用半導体素子がワイドバンドギャップ半導体材料により形成されていることを特徴とする請求項1から7のいずれか1項に記載の電力用半導体装置。
- 前記ワイドバンドギャップ半導体材料は、炭化ケイ素、窒化ガリウム系材料、およびダイヤモンドのうちのいずれかであることを特徴とする請求項8に記載の電力用半導体装置。
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| WO2014034411A1 (ja) | 2014-03-06 |
| EP2889902A1 (en) | 2015-07-01 |
| KR20150038364A (ko) | 2015-04-08 |
| JPWO2014034411A1 (ja) | 2016-08-08 |
| CN104603934A (zh) | 2015-05-06 |
| JP6218898B2 (ja) | 2017-10-25 |
| US9433075B2 (en) | 2016-08-30 |
| KR101614669B1 (ko) | 2016-04-21 |
| CN104603934B (zh) | 2018-01-16 |
| EP2889902B1 (en) | 2021-09-22 |
| US20150223316A1 (en) | 2015-08-06 |
| EP2889902A4 (en) | 2016-05-04 |
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