JP2022046313A - 半導体素子および半導体装置 - Google Patents
半導体素子および半導体装置 Download PDFInfo
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- 239000004065 semiconductor Substances 0.000 title claims abstract description 407
- 239000010410 layer Substances 0.000 description 175
- 239000012535 impurity Substances 0.000 description 8
- 229910052710 silicon Inorganic materials 0.000 description 7
- 239000010703 silicon Substances 0.000 description 7
- 239000010931 gold Substances 0.000 description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 5
- 230000004048 modification Effects 0.000 description 5
- 238000012986 modification Methods 0.000 description 5
- 229910052814 silicon oxide Inorganic materials 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 3
- 229910052737 gold Inorganic materials 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000011229 interlayer Substances 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 2
- 229920005591 polysilicon Polymers 0.000 description 2
- 239000000969 carrier Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
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Abstract
Description
Claims (9)
- 半導体部と、
前記半導体部の表面上に設けられた第1電極と、
前記半導体部の裏面上に設けられた第2電極と、
前記半導体部の裏面上において、前記第2電極から離間して設けられた第3電極と、
前記半導体部と前記第1電極との間に設けられ、前記半導体部から第1絶縁膜により電気的に絶縁され、前記第1電極から第2絶縁膜により電気的に絶縁された第1の制御電極と、
を備え、
前記半導体部は、第1導電形の第1半導体層と、第2導電形の第2半導体層と、前記第1導電形の第3半導体層と、前記第2導電形の第4半導体層と、を含み、
前記第1半導体層は、前記第1電極と前記第2電極との間、および、前記第1電極と前記第3電極との間に延在し、
前記第2半導体層は、前記第1半導体層と前記第1電極との間に設けられ、前記第1絶縁膜を介して前記制御電極に向き合い、
前記第3半導体層は、前記第2半導体層と前記第1電極との間に選択的に設けられ、前記第1絶縁膜に接し、前記第1電極に電気的に接続され、
前記第4半導体層は、前記第2電極と前記第1半導体層との間に設けられ、前記第2電極に電気的に接続され、
前記第1半導体層は、前記半導体部の前記裏面において前記第3電極に接続された半導体素子。 - 請求項1に記載の半導体素子と、
前記半導体素子に電気的に接続された第2の半導体素子と、
を備え、
前記第2の半導体素子は、第2の半導体部と、第4電極と、第5電極と、第2の制御電極と、を有し、
前記第4電極は、前記第2の半導体部および前記半導体素子の前記第3電極に電気的に接続され、
前記第5電極は、前記第2の半導体部および前記半導体素子の前記第2電極に電気的に接続され、
前記第2の制御電極は、前記第4電極と前記第5電極との間の電気的導通を制御するように設けられた半導体装置。 - 前記第2の半導体部は、前記第4電極と前記第5電極との間に設けられ、前記第1導電形の第5半導体層と、前記第2導電形の第6半導体層と、前記第1導電形の第7半導体層と、を含み、
前記第5半導体層は、前記第4電極と前記第5電極との間に延在し、前記第5電極に電気的に接続され、
前記第6半導体層は、前記第5半導体層と前記第4電極との間に設けられ、前記第2の制御電極に第3絶縁膜を介して向き合い、前記第4電極に電気的に接続され、
前記第7半導体層は、前記第6半導体層と前記第4電極との間に選択的に設けられ、前記第3絶縁膜に接し、前記第4電極に電気的に接続される請求項2記載の半導体装置。 - 前記半導体素子の前記第1電極に電気的に接続された第6電極と、前記半導体素子の前記第2電極に電気的接続された第7電極と、前記第6電極と前記第7電極との間に設けられた第3の半導体部と、を含む第3の半導体素子をさらに備え、
前記第3の半導体部は、前記第2導電形の第8半導体層と、前記第1導電形の第9半導体層と、を含み、
前記第8半導体層は、前記第6電極に電気的に接続され、前記第9半導体層は、前記第8半導体層と前記第7電極との間に設けられ、前記第7電極に電気的に接続された請求項2または3に記載の半導体装置。 - 前記第2半導体素子は、前記第2の半導体部の表面上において、前記第4電極から離間して設けられた第6電極をさらに含み、
前記第2の半導体部は、前記第2導電形の第8半導体層をさらに含み、
前記第5半導体層は、前記第4電極と前記第5電極との間、および、前記第6電極と前記第5電極との間に延在し、
前記第8半導体層は、前記第5半導体層と前記第6電極との間に設けられ、前記第6電極に電気的に接続される請求項3記載の半導体装置。 - 前記第2半導体素子は、前記第4電極と前記第6電極との間において、前記第2の半導体部の前記表面側に設けられた絶縁領域を有する請求項5記載の半導体装置。
- 前記第2の半導体部の前記表面に沿って、前記第4電極から前記第6電極に向かう方向における前記絶縁領域の間隔は、前記第5電極から前記第4電極に向かう方向における前記第2の半導体部の厚さよりも広い請求項6記載の半導体装置。
- 前記第2半導体素子は、前記第2の半導体部の表面上に設けられた前記第4電極と、前記第4電極から離間して、前記第2の半導体部の表面上に設けられた前記第5電極と、前記第4電極および前記第5電極から離間して、前記第2の半導体部の表面上に設けられた第6電極と、前記第2の半導体部の裏面上に設けられた第7電極と、をさらに含み、
前記第2の制御電極は、前記第2の半導体部の表面上において、前記第4電極と前記第5電極との間に設けられ、
前記第2の半導体部は、前記第1導電形の第5半導体層と、前記第2導電形の第6半導体層と、前記第1導電形の第7半導体層と、前記第1導電形の第2の第7半導体層と、前記第2導電形の第8半導体層と、を含み、
前記第5半導体層は、前記第4電極と前記第7電極との間、前記第5電極と前記第7電極との間、前記第2の制御電極と前記第7電極との間、および、前記第6電極と前記第7電極との間に延在し、前記第7電極に電気的に接続され、
前記第6半導体層は、前記第5半導体層と前記第4電極との間、前記第5半導体層と前記第5電極との間、および、前記第5半導体層と前記第2の制御電極との間に設けられ、前記第2の制御電極に第3絶縁膜を介して向き合い、
前記第7半導体層は、前記第6半導体層と前記第4電極との間に選択的に設けられ、前記第3絶縁膜に接し、前記第4電極に電気的に接続され、
前記第2の第7半導体層は、前記第6半導体層と前記第5電極との間に選択的に設けられ、前記第3絶縁膜に接し、前記第5電極に電気的に接続され、
前記第8半導体層は、前記第5半導体層と前記第6電極との間に設けられ、前記第6電極に電気的に接続される請求項2記載の半導体装置。 - 前記第1の制御電極と前記第1電極との間に第1制御電圧、前記第2の制御電極と前記第5の電極との間に第2制御電圧を印加するドライバをさらに備え、
前記ドライバは、前記第1制御電圧を前記第2半導体層にチャネルが形成される第1閾値よりも高い電圧から前記第1閾値よりも低い電圧に切り替えるとき、前記第2制御電圧として前記第4電極と前記第5電極との間に電気的導通する電圧を前記第2の制御電極に与える請求項2記載の半導体装置。
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JPH08316479A (ja) * | 1995-03-14 | 1996-11-29 | Mitsubishi Electric Corp | 絶縁ゲート型半導体装置およびその製造方法 |
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US20130240947A1 (en) * | 2012-03-15 | 2013-09-19 | Tomoko Matsudai | Semiconductor device |
JP2019068011A (ja) * | 2017-10-05 | 2019-04-25 | 株式会社東芝 | 半導体装置 |
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JP5787853B2 (ja) | 2012-09-12 | 2015-09-30 | 株式会社東芝 | 電力用半導体装置 |
JP2014086600A (ja) | 2012-10-24 | 2014-05-12 | Fuji Electric Co Ltd | 半導体装置、半導体装置の製造方法および半導体装置の制御方法 |
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US5751024A (en) * | 1995-03-14 | 1998-05-12 | Mitsubishi Denki Kabushiki Kaisha | Insulated gate semiconductor device |
JP2009141270A (ja) * | 2007-12-10 | 2009-06-25 | Denso Corp | 半導体装置 |
US20130240947A1 (en) * | 2012-03-15 | 2013-09-19 | Tomoko Matsudai | Semiconductor device |
JP2013197122A (ja) * | 2012-03-15 | 2013-09-30 | Toshiba Corp | 半導体装置 |
JP2019068011A (ja) * | 2017-10-05 | 2019-04-25 | 株式会社東芝 | 半導体装置 |
JP2019145758A (ja) * | 2018-02-23 | 2019-08-29 | 株式会社 日立パワーデバイス | 半導体装置および電力変換装置 |
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