JP6138277B2 - パワー半導体モジュール - Google Patents
パワー半導体モジュール Download PDFInfo
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- JP6138277B2 JP6138277B2 JP2015553261A JP2015553261A JP6138277B2 JP 6138277 B2 JP6138277 B2 JP 6138277B2 JP 2015553261 A JP2015553261 A JP 2015553261A JP 2015553261 A JP2015553261 A JP 2015553261A JP 6138277 B2 JP6138277 B2 JP 6138277B2
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- power semiconductor
- semiconductor chip
- dielectric constant
- insulating substrate
- low dielectric
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- 239000004065 semiconductor Substances 0.000 title claims description 158
- 239000000758 substrate Substances 0.000 claims description 51
- 239000004020 conductor Substances 0.000 claims description 37
- 230000002093 peripheral effect Effects 0.000 claims description 33
- 239000003566 sealing material Substances 0.000 claims description 12
- 229910000679 solder Inorganic materials 0.000 claims description 10
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 39
- 229910052782 aluminium Inorganic materials 0.000 description 39
- 230000005684 electric field Effects 0.000 description 25
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 13
- 229910052710 silicon Inorganic materials 0.000 description 13
- 239000010703 silicon Substances 0.000 description 13
- 238000004519 manufacturing process Methods 0.000 description 10
- 230000007547 defect Effects 0.000 description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 8
- 229910052802 copper Inorganic materials 0.000 description 8
- 239000010949 copper Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 239000012212 insulator Substances 0.000 description 4
- 239000003822 epoxy resin Substances 0.000 description 3
- 229920000647 polyepoxide Polymers 0.000 description 3
- 229920001721 polyimide Polymers 0.000 description 3
- 239000009719 polyimide resin Substances 0.000 description 3
- 238000012216 screening Methods 0.000 description 3
- 229920002379 silicone rubber Polymers 0.000 description 3
- 230000006872 improvement Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Description
また、本発明の別の態様に関するパワー半導体モジュールは、絶縁基板と、前記絶縁基板上に配置されたパワー半導体チップとを備え、前記絶縁基板の表面上には、上面電極が形成され、前記パワー半導体チップの表面上には、表面導体パターンが形成され、前記パワー半導体チップの裏面上には、裏面導体パターンが形成され、前記パワー半導体チップの表面において、素子領域と、前記素子領域を平面視で囲む周辺領域とが規定され、前記絶縁基板における前記上面電極と前記パワー半導体チップにおける前記裏面導体パターンとが、半田を介して接続され、前記パワー半導体チップの前記素子領域における、前記表面導体パターンに接続された配線と、前記配線と前記パワー半導体チップの表面における前記周辺領域との間に配置された低誘電率膜と、前記絶縁基板、前記パワー半導体チップ、前記配線および前記低誘電率膜を覆って形成された封止材とをさらに備え、前記低誘電率膜が、前記封止材よりも低い誘電率を有し、前記低誘電率膜が、前記配線の表面を覆って形成されている。
<構成>
図1は、本実施形態に関するパワー半導体モジュールの全体の断面図である。
本実施形態によれば、パワー半導体モジュールが、絶縁基板2と、絶縁基板2上に配置されたパワー半導体チップ4とを備えている。
<構成>
図3は、本実施形態に関するパワー半導体モジュールの拡大断面図である。以下、図2に示された構成と同様の構成は同一の符号を付して示し、同様である説明については適宜省略する。図4は、図3の構造を上面から見た図である。ただし、シリコンゲル6は、簡単のため図示が省略されている。
本実施形態によれば、低誘電率膜8Aが、前記パワー半導体チップ4の表面における、アルミワイヤ5の配線経路と平面視上重なる部分の周辺領域4Bを覆って形成されている。
<構成>
図5は、本実施形態に関するパワー半導体モジュールの拡大断面図である。以下、図2に示された構成と同様の構成は同一の符号を付して示し、同様である説明については適宜省略する。
本実施形態によれば、低誘電率膜8Bが、前記配線としてのアルミワイヤ5の表面を覆って形成されている。
<構成>
図6は、本実施形態に関するパワー半導体モジュールの拡大断面図である。以下、図2に示された構成と同様の構成は同一の符号を付して示し、同様である説明については適宜省略する。
本実施形態によれば、パワー半導体モジュールが、絶縁基板2と、絶縁基板2上に配置されたパワー半導体チップ4とを備えている。
<構成>
図7は、本実施形態に関するパワー半導体モジュールの拡大断面図である。以下、図2に示された構成と同様の構成は同一の符号を付して示し、同様である説明については適宜省略する。
本実施形態によれば、配線が、パワー半導体チップ4における表面導体パターンに直接接続された銅電極9である。
<構成>
図8は、本実施形態に関するパワー半導体モジュールの拡大断面図である。以下、図2に示された構成と同様の構成は同一の符号を付して示し、同様である説明については適宜省略する。
本実施形態によれば、アルミワイヤ5Bが、パワー半導体チップ4の表面と直交する方向に延びて配線されている。
<構成>
図9は、本実施形態に関するパワー半導体モジュールの拡大断面図である。以下、図2に示された構成と同様の構成は同一の符号を付して示し、同様である説明については適宜省略する。図10は、図9の構造を上面から見た図である。ただし、シリコンゲル6は、簡単のため図示が省略されている。
本実施形態によれば、パワー半導体モジュールが、絶縁基板2と、絶縁基板2上に配置されたパワー半導体チップ4とを備えている。
Claims (4)
- 絶縁基板と、
前記絶縁基板上に配置されたパワー半導体チップとを備え、
前記絶縁基板の表面上には、上面電極が形成され、
前記パワー半導体チップの表面上には、表面導体パターンが形成され、
前記パワー半導体チップの裏面上には、裏面導体パターンが形成され、
前記パワー半導体チップの表面において、素子領域と、前記素子領域を平面視で囲む周辺領域とが規定され、
前記絶縁基板における前記上面電極と前記パワー半導体チップにおける前記裏面導体パターンとが、半田を介して接続され、
前記パワー半導体チップの前記素子領域における、前記表面導体パターンに接続された配線と、
前記配線と前記パワー半導体チップの表面における前記周辺領域との間に配置された低誘電率膜と、
前記絶縁基板、前記パワー半導体チップ、前記配線および前記低誘電率膜を覆って形成された封止材とをさらに備え、
前記低誘電率膜が、前記封止材よりも低い誘電率を有し、
前記低誘電率膜が、前記パワー半導体チップの表面上に位置する、
パワー半導体モジュール。 - 前記低誘電率膜が、前記パワー半導体チップの表面における、前記配線の配線経路と平面視上重なる部分の前記周辺領域を覆って形成されている、
請求項1に記載のパワー半導体モジュール。 - 前記低誘電率膜が、前記パワー半導体チップの表面全体を覆って形成されている、
請求項1または2に記載のパワー半導体モジュール。 - 絶縁基板と、
前記絶縁基板上に配置されたパワー半導体チップとを備え、
前記絶縁基板の表面上には、上面電極が形成され、
前記パワー半導体チップの表面上には、表面導体パターンが形成され、
前記パワー半導体チップの裏面上には、裏面導体パターンが形成され、
前記パワー半導体チップの表面において、素子領域と、前記素子領域を平面視で囲む周辺領域とが規定され、
前記絶縁基板における前記上面電極と前記パワー半導体チップにおける前記裏面導体パターンとが、半田を介して接続され、
前記パワー半導体チップの前記素子領域における、前記表面導体パターンに接続された配線と、
前記配線と前記パワー半導体チップの表面における前記周辺領域との間に配置された低誘電率膜と、
前記絶縁基板、前記パワー半導体チップ、前記配線および前記低誘電率膜を覆って形成された封止材とをさらに備え、
前記低誘電率膜が、前記封止材よりも低い誘電率を有し、
前記低誘電率膜が、前記配線の表面を覆って形成されている、
パワー半導体モジュール。
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