JP7700006B2 - 半導体装置 - Google Patents
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- JP7700006B2 JP7700006B2 JP2021150262A JP2021150262A JP7700006B2 JP 7700006 B2 JP7700006 B2 JP 7700006B2 JP 2021150262 A JP2021150262 A JP 2021150262A JP 2021150262 A JP2021150262 A JP 2021150262A JP 7700006 B2 JP7700006 B2 JP 7700006B2
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D62/00—Semiconductor bodies, or regions thereof, of devices having potential barriers
- H10D62/10—Shapes, relative sizes or dispositions of the regions of the semiconductor bodies; Shapes of the semiconductor bodies
- H10D62/102—Constructional design considerations for preventing surface leakage or controlling electric field concentration
- H10D62/103—Constructional design considerations for preventing surface leakage or controlling electric field concentration for increasing or controlling the breakdown voltage of reverse-biased devices
- H10D62/105—Constructional design considerations for preventing surface leakage or controlling electric field concentration for increasing or controlling the breakdown voltage of reverse-biased devices by having particular doping profiles, shapes or arrangements of PN junctions; by having supplementary regions, e.g. junction termination extension [JTE]
- H10D62/108—Constructional design considerations for preventing surface leakage or controlling electric field concentration for increasing or controlling the breakdown voltage of reverse-biased devices by having particular doping profiles, shapes or arrangements of PN junctions; by having supplementary regions, e.g. junction termination extension [JTE] having localised breakdown regions, e.g. built-in avalanching regions
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D12/00—Bipolar devices controlled by the field effect, e.g. insulated-gate bipolar transistors [IGBT]
- H10D12/411—Insulated-gate bipolar transistors [IGBT]
- H10D12/441—Vertical IGBTs
- H10D12/461—Vertical IGBTs having non-planar surfaces, e.g. having trenches, recesses or pillars in the surfaces of the emitter, base or collector regions
- H10D12/481—Vertical IGBTs having non-planar surfaces, e.g. having trenches, recesses or pillars in the surfaces of the emitter, base or collector regions having gate structures on slanted surfaces, on vertical surfaces, or in grooves, e.g. trench gate IGBTs
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D62/00—Semiconductor bodies, or regions thereof, of devices having potential barriers
- H10D62/10—Shapes, relative sizes or dispositions of the regions of the semiconductor bodies; Shapes of the semiconductor bodies
- H10D62/102—Constructional design considerations for preventing surface leakage or controlling electric field concentration
- H10D62/103—Constructional design considerations for preventing surface leakage or controlling electric field concentration for increasing or controlling the breakdown voltage of reverse-biased devices
- H10D62/105—Constructional design considerations for preventing surface leakage or controlling electric field concentration for increasing or controlling the breakdown voltage of reverse-biased devices by having particular doping profiles, shapes or arrangements of PN junctions; by having supplementary regions, e.g. junction termination extension [JTE]
- H10D62/106—Constructional design considerations for preventing surface leakage or controlling electric field concentration for increasing or controlling the breakdown voltage of reverse-biased devices by having particular doping profiles, shapes or arrangements of PN junctions; by having supplementary regions, e.g. junction termination extension [JTE] having supplementary regions doped oppositely to or in rectifying contact with regions of the semiconductor bodies, e.g. guard rings with PN or Schottky junctions
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D62/00—Semiconductor bodies, or regions thereof, of devices having potential barriers
- H10D62/10—Shapes, relative sizes or dispositions of the regions of the semiconductor bodies; Shapes of the semiconductor bodies
- H10D62/102—Constructional design considerations for preventing surface leakage or controlling electric field concentration
- H10D62/103—Constructional design considerations for preventing surface leakage or controlling electric field concentration for increasing or controlling the breakdown voltage of reverse-biased devices
- H10D62/105—Constructional design considerations for preventing surface leakage or controlling electric field concentration for increasing or controlling the breakdown voltage of reverse-biased devices by having particular doping profiles, shapes or arrangements of PN junctions; by having supplementary regions, e.g. junction termination extension [JTE]
- H10D62/106—Constructional design considerations for preventing surface leakage or controlling electric field concentration for increasing or controlling the breakdown voltage of reverse-biased devices by having particular doping profiles, shapes or arrangements of PN junctions; by having supplementary regions, e.g. junction termination extension [JTE] having supplementary regions doped oppositely to or in rectifying contact with regions of the semiconductor bodies, e.g. guard rings with PN or Schottky junctions
- H10D62/107—Buried supplementary regions, e.g. buried guard rings
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D62/00—Semiconductor bodies, or regions thereof, of devices having potential barriers
- H10D62/10—Shapes, relative sizes or dispositions of the regions of the semiconductor bodies; Shapes of the semiconductor bodies
- H10D62/102—Constructional design considerations for preventing surface leakage or controlling electric field concentration
- H10D62/112—Constructional design considerations for preventing surface leakage or controlling electric field concentration for preventing surface leakage due to surface inversion layers, e.g. by using channel stoppers
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- H—ELECTRICITY
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- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D64/00—Electrodes of devices having potential barriers
- H10D64/111—Field plates
- H10D64/112—Field plates comprising multiple field plate segments
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D62/00—Semiconductor bodies, or regions thereof, of devices having potential barriers
- H10D62/10—Shapes, relative sizes or dispositions of the regions of the semiconductor bodies; Shapes of the semiconductor bodies
- H10D62/124—Shapes, relative sizes or dispositions of the regions of semiconductor bodies or of junctions between the regions
- H10D62/126—Top-view geometrical layouts of the regions or the junctions
- H10D62/127—Top-view geometrical layouts of the regions or the junctions of cellular field-effect devices, e.g. multicellular DMOS transistors or IGBTs
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D62/00—Semiconductor bodies, or regions thereof, of devices having potential barriers
- H10D62/10—Shapes, relative sizes or dispositions of the regions of the semiconductor bodies; Shapes of the semiconductor bodies
- H10D62/17—Semiconductor regions connected to electrodes not carrying current to be rectified, amplified or switched, e.g. channel regions
- H10D62/393—Body regions of DMOS transistors or IGBTs
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Description
このように、半導体装置1では、チャージロバスト性を向上させ、終端領域TRにおける耐圧の低下を防ぐことができる。
Claims (9)
- 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、前記第2導電形の第5半導体層と、を含む半導体部と、
前記半導体部の裏面上に設けられた第1電極と、
前記半導体部の表面上に設けられた第2電極であって、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2電極との間に設けられ、前記第3半導体層は、前記第2半導体層と前記第2電極との間に部分的に設けられ、前記第4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るように構成された、第2電極と、
前記半導体部に設けられたトレンチの内部に配置され、前記半導体部と前記第2電極との間に位置し、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2電極から第2絶縁膜により電気的に絶縁され、前記半導体部の前記表面側から前記第1半導体層中に延びる制御電極であって、前記第2半導体層は、前記第1絶縁膜を介し、前記制御電極に向き合うように構成される、制御電極と、
を備え、
前記半導体部は、前記制御電極、前記第2半導体層および前記第3半導体層を含む活性領域と、前記活性領域を囲む終端領域と、を含み、
前記第5半導体層は、前記終端領域において、前記第1半導体層中に設けられ、前記第1半導体層と前記第4半導体層との境界に沿う第1方向に延在し、
前記第1電極から前記第2電極に向かう第2方向において、前記第5半導体層から前記半導体部の前記表面に至る第1距離は、前記第5半導体層から前記半導体部の前記裏面に至る第2距離よりも長く、
前記第2距離は、10マイクロメートル以下であり、
前記第5半導体層における不純物濃度は5×10 15 cm -3 よりも大きい、半導体装置。 - 前記半導体部は、第2導電形の第6半導体層をさらに含み、
前記第6半導体層は、前記半導体部の前記表面側に設けられ、前記活性領域と前記終端領域との境界に沿って延在し、
前記第5半導体層は、前記第6半導体層から離間し、前記第6半導体層よりも終端領域側に設けられる請求項1記載の半導体装置。 - 前記半導体部の前記表面に平行な平面視において、前記第5半導体層は、前記第6半導体層の外側に位置する請求項2記載の半導体装置。
- 前記半導体部は、前記第1導電形の第7半導体層をさらに含み、
前記第7半導体層は、前記第1半導体層と前記第4半導体層との間に設けられ、前記第1半導体層における第1導電形不純物の濃度よりも高濃度の第1導電形不純物を含む請求項1乃至3のいずれか1つに記載の半導体装置。 - 前記半導体部は、前記第1導電形の第8半導体層をさらに備え、
前記第8半導体層は、前記半導体部の前記表面側に設けられ、前記第6半導体層から離間し、前記第6半導体層よりも終端領域側に設けられ、前記第1半導体層における第1導電形不純物の濃度よりも高濃度の第1導電形不純物を含み、
前記半導体部の前記表面に平行な平面視において、前記第5半導体層は、前記第6半導体層と前記第8半導体層との間に設けられる請求項2または3に記載の半導体装置。 - 前記第5半導体層は、前記第1方向に延在するプレート状に設けられる請求項5記載の半導体装置。
- 前記半導体部は、前記第2導電形の第9半導体層をさらに含み、
前記第9半導体層は、前記半導体部の前記表面側において、前記第6半導体層と前記第8半導体層との間に設けられ、
前記第5半導体層は、前記第2方向において、前記第4半導体層と前記第9半導体層との間に位置する請求項5または6に記載の半導体装置。 - 前記第8半導体層上に設けられた第3電極と、
前記第9半導体層上に設けられた第4電極と、をさらに備え、
前記第2電極、前記第3電極および前記第4電極は、相互に離間し、
前記第3電極は、前記第8半導体層に電気的に接続され、
前記第4電極は、前記第9半導体層に電気的に接続される請求項7記載の半導体装置。 - 前記半導体部の前記表面側に設けられ、前記終端領域を覆う樹脂層をさらに備えた請求項1乃至8のいずれか1つに記載の半導体装置。
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| Application Number | Priority Date | Filing Date | Title |
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| JP2021150262A JP7700006B2 (ja) | 2021-09-15 | 2021-09-15 | 半導体装置 |
| CN202111611306.7A CN115810662A (zh) | 2021-09-15 | 2021-12-27 | 半导体装置 |
| US17/582,990 US12183782B2 (en) | 2021-09-15 | 2022-01-24 | Semiconductor device |
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| JP2021150262A JP7700006B2 (ja) | 2021-09-15 | 2021-09-15 | 半導体装置 |
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| JP2023042866A JP2023042866A (ja) | 2023-03-28 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002503401A (ja) | 1998-04-08 | 2002-01-29 | シーメンス アクチエンゲゼルシヤフト | プレーナ構造用の高耐圧コーナー部シール体 |
| JP2002343967A (ja) | 2001-05-14 | 2002-11-29 | Toyota Central Res & Dev Lab Inc | 半導体装置 |
| US20140312382A1 (en) | 2012-04-24 | 2014-10-23 | Fairchild Korea Semiconductor Ltd. | Power device and method of manufacturing the same |
| WO2015087507A1 (ja) | 2013-12-10 | 2015-06-18 | 株式会社アルバック | 絶縁ゲートバイポーラトランジスタおよびその製造方法 |
| JP2015179774A (ja) | 2014-03-19 | 2015-10-08 | 株式会社東芝 | 半導体装置の製造方法 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4357753B2 (ja) * | 2001-01-26 | 2009-11-04 | 株式会社東芝 | 高耐圧半導体装置 |
| JP2011086710A (ja) | 2009-10-14 | 2011-04-28 | Toyota Motor Corp | 半導体装置 |
| JP5537996B2 (ja) * | 2010-03-03 | 2014-07-02 | 株式会社東芝 | 半導体装置 |
| WO2014156849A1 (ja) | 2013-03-25 | 2014-10-02 | 富士電機株式会社 | 半導体装置 |
| EP2942816B1 (en) * | 2013-08-15 | 2020-10-28 | Fuji Electric Co., Ltd. | Semiconductor device |
| JP6224454B2 (ja) | 2013-12-27 | 2017-11-01 | 株式会社豊田中央研究所 | 縦型半導体装置 |
| JP6304878B2 (ja) * | 2014-04-25 | 2018-04-04 | 富士電機株式会社 | 半導体装置および半導体装置の製造方法 |
| JP7070303B2 (ja) | 2018-10-04 | 2022-05-18 | 三菱電機株式会社 | 半導体装置 |
| JP7230434B2 (ja) * | 2018-10-30 | 2023-03-01 | 富士電機株式会社 | 半導体装置の製造方法 |
| US11101375B2 (en) * | 2019-03-19 | 2021-08-24 | Kabushiki Kaisha Toshiba | Semiconductor device and method of controlling same |
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- 2021-09-15 JP JP2021150262A patent/JP7700006B2/ja active Active
- 2021-12-27 CN CN202111611306.7A patent/CN115810662A/zh active Pending
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- 2022-01-24 US US17/582,990 patent/US12183782B2/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002503401A (ja) | 1998-04-08 | 2002-01-29 | シーメンス アクチエンゲゼルシヤフト | プレーナ構造用の高耐圧コーナー部シール体 |
| JP2002343967A (ja) | 2001-05-14 | 2002-11-29 | Toyota Central Res & Dev Lab Inc | 半導体装置 |
| US20140312382A1 (en) | 2012-04-24 | 2014-10-23 | Fairchild Korea Semiconductor Ltd. | Power device and method of manufacturing the same |
| WO2015087507A1 (ja) | 2013-12-10 | 2015-06-18 | 株式会社アルバック | 絶縁ゲートバイポーラトランジスタおよびその製造方法 |
| JP2015179774A (ja) | 2014-03-19 | 2015-10-08 | 株式会社東芝 | 半導体装置の製造方法 |
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| Publication number | Publication date |
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| JP2023042866A (ja) | 2023-03-28 |
| CN115810662A (zh) | 2023-03-17 |
| US20230078785A1 (en) | 2023-03-16 |
| US12183782B2 (en) | 2024-12-31 |
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