JP6036765B2 - 半導体装置及び半導体装置の製造方法 - Google Patents
半導体装置及び半導体装置の製造方法 Download PDFInfo
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- H10D30/0291—Manufacture or treatment of FETs having insulated gates [IGFET] of double-diffused metal oxide semiconductor [DMOS] FETs of vertical DMOS [VDMOS] FETs
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- H10D84/0107—Integrating at least one component covered by H10D12/00 or H10D30/00 with at least one component covered by H10D8/00, H10D10/00 or H10D18/00, e.g. integrating IGFETs with BJTs
- H10D84/0109—Integrating at least one component covered by H10D12/00 or H10D30/00 with at least one component covered by H10D8/00, H10D10/00 or H10D18/00, e.g. integrating IGFETs with BJTs the at least one component covered by H10D12/00 or H10D30/00 being a MOS device
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- H10D84/0123—Integrating together multiple components covered by H10D12/00 or H10D30/00, e.g. integrating multiple IGBTs
- H10D84/0126—Integrating together multiple components covered by H10D12/00 or H10D30/00, e.g. integrating multiple IGBTs the components including insulated gates, e.g. IGFETs
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- H10D84/101—Integrated devices comprising main components and built-in components, e.g. IGBT having built-in freewheel diode
- H10D84/141—VDMOS having built-in components
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- H10D84/80—Integrated devices formed in or on semiconductor substrates that comprise only semiconducting layers, e.g. on Si wafers or on GaAs-on-Si wafers characterised by the integration of at least one component covered by groups H10D12/00 or H10D30/00, e.g. integration of IGFETs
- H10D84/82—Integrated devices formed in or on semiconductor substrates that comprise only semiconducting layers, e.g. on Si wafers or on GaAs-on-Si wafers characterised by the integration of at least one component covered by groups H10D12/00 or H10D30/00, e.g. integration of IGFETs of only field-effect components
- H10D84/83—Integrated devices formed in or on semiconductor substrates that comprise only semiconducting layers, e.g. on Si wafers or on GaAs-on-Si wafers characterised by the integration of at least one component covered by groups H10D12/00 or H10D30/00, e.g. integration of IGFETs of only field-effect components of only insulated-gate FETs [IGFET]
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- 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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- General Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
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- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Metal-Oxide And Bipolar Metal-Oxide Semiconductor Integrated Circuits (AREA)
Description
本明細書または図面に説明した技術要素は、単独あるいは各種の組み合わせによって技術有用性を発揮するものであり、出願時請求項記載の組み合わせに限定されるものではない。また、本明細書または図面に例示した技術は複数目的を同時に達成するものであり、そのうちの1つの目的を達成すること自体で技術有用性を持つものである。
12:半導体基板
14:トレンチ
16:ゲート絶縁膜
18:ゲート電極
20:層間絶縁膜
22:ソース電極
22a:埋め込み電極
22b:ショットキー電極
22c:表面電極
22d:バリアメタル層
24:凹部
26:ドレイン電極
30:ソース領域
32:上部ボディ領域
34:中間領域
36:下部ボディ領域
38:ドリフト領域
40:ドレイン領域
Claims (6)
- 半導体装置であって、
表面にトレンチが形成されている半導体基板と、
前記トレンチ内に配置されているトレンチ電極と、
前記トレンチ電極の表面を覆っており、前記半導体基板の前記表面から突出している層間絶縁膜と、
前記半導体基板の前記表面上に配置されており、前記層間絶縁膜から離間した位置に配置されており、前記半導体基板に対してショットキー接触しているショットキー電極と、
前記層間絶縁膜と前記ショットキー電極の間の凹部内に配置されており、前記ショットキー電極とは異なる金属により構成されている埋め込み電極と、
前記層間絶縁膜、前記埋め込み電極及び前記ショットキー電極を覆う表面電極、
を有し、
前記埋め込み電極に覆われている範囲において、前記半導体基板の前記表面と前記ショットキー電極の側面の間の角度が90度より大きい半導体装置。 - 前記埋め込み電極に覆われている範囲において、前記半導体基板の前記表面と前記層間絶縁膜の側面の間の角度が90度より大きい請求項1の半導体装置。
- 前記ショットキー電極と前記表面電極の間、及び、前記層間絶縁膜と前記表面電極の間に、前記埋め込み電極に対してエッチング選択性を有するバリアメタル層が配置されている請求項1または2の半導体装置。
- 前記埋め込み電極が、前記半導体基板に対してオーミック接触している請求項1〜3のいずれか一項の半導体装置。
- 半導体装置を製造する方法であって、
半導体基板の表面にトレンチを形成する工程と、
前記トレンチ内にトレンチ電極を形成する工程と、
前記トレンチ電極の表面上に、前記トレンチ電極の表面を覆う層間絶縁膜を含み、前記半導体基板の前記表面から突出する第1凸部を形成する工程と、
前記半導体基板の前記表面上であって前記第1凸部から離間した位置に、前記半導体基板に対してショットキー接触しているショットキー電極を含み、前記半導体基板の前記表面から突出する第2凸部を形成する工程と、
前記第1凸部と、前記第2凸部と、前記第1凸部と前記第2凸部の間の前記半導体基板の前記表面を覆うように、埋め込み電極を成長させる工程と、
前記第1凸部と前記第2凸部の表面が露出し、前記第1凸部と前記第2凸部の間の凹部内に前記埋め込み電極が残存するように、前記埋め込み電極をエッチングする工程と、
前記エッチングの後に、前記第1凸部、前記埋め込み電極及び前記第2凸部を覆う表面電極を成長させる工程、
を有する方法。 - 前記埋め込み電極が、前記ショットキー電極とは異なる金属により構成されている請求項5の方法。
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014169454A JP6036765B2 (ja) | 2014-08-22 | 2014-08-22 | 半導体装置及び半導体装置の製造方法 |
| DE112015003835.3T DE112015003835B4 (de) | 2014-08-22 | 2015-06-23 | Halbleitervorrichtung und verfahren zur herstellung der halbleitervorrichtung |
| PCT/JP2015/068095 WO2016027564A1 (ja) | 2014-08-22 | 2015-06-23 | 半導体装置及び半導体装置の製造方法 |
| KR1020167031726A KR101868730B1 (ko) | 2014-08-22 | 2015-06-23 | 반도체 장치 및 반도체 장치의 제조 방법 |
| CN201580045037.9A CN106575668B (zh) | 2014-08-22 | 2015-06-23 | 半导体装置以及半导体装置的制造方法 |
| US15/125,857 US9941273B2 (en) | 2014-08-22 | 2015-06-23 | Semiconductor device and method of manufacturing the semiconductor device |
| TW104126111A TWI587478B (zh) | 2014-08-22 | 2015-08-11 | Semiconductor device and method for manufacturing semiconductor device |
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| JP2014169454A JP6036765B2 (ja) | 2014-08-22 | 2014-08-22 | 半導体装置及び半導体装置の製造方法 |
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|---|---|
| JP2016046377A JP2016046377A (ja) | 2016-04-04 |
| JP2016046377A5 JP2016046377A5 (ja) | 2016-10-13 |
| JP6036765B2 true JP6036765B2 (ja) | 2016-11-30 |
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| US (1) | US9941273B2 (ja) |
| JP (1) | JP6036765B2 (ja) |
| KR (1) | KR101868730B1 (ja) |
| CN (1) | CN106575668B (ja) |
| DE (1) | DE112015003835B4 (ja) |
| TW (1) | TWI587478B (ja) |
| WO (1) | WO2016027564A1 (ja) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP6299789B2 (ja) * | 2016-03-09 | 2018-03-28 | トヨタ自動車株式会社 | スイッチング素子 |
| JP6673088B2 (ja) * | 2016-08-05 | 2020-03-25 | トヨタ自動車株式会社 | 半導体装置 |
| JP6784164B2 (ja) * | 2016-12-15 | 2020-11-11 | 株式会社豊田中央研究所 | 半導体装置 |
| DE102017118665A1 (de) | 2017-08-16 | 2019-02-21 | Infineon Technologies Ag | Rc-igbt |
| JP6776205B2 (ja) * | 2017-09-20 | 2020-10-28 | 株式会社東芝 | 半導体装置の製造方法 |
| DE112018007002T5 (de) | 2018-02-02 | 2020-10-29 | Mitsubishi Electric Corporation | Verfahren zur Herstellung einer Halbleitervorrichtung |
| JP6964538B2 (ja) * | 2018-02-28 | 2021-11-10 | 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 |
| US11417762B2 (en) * | 2019-06-26 | 2022-08-16 | Skyworks Solutions, Inc. | Switch with integrated Schottky barrier contact |
| DE102021104532B4 (de) * | 2021-02-25 | 2025-06-18 | Infineon Technologies Ag | Mesa-Kontakt für MOS-gesteuerte Leistungshalbleitervorrichtung undVerfahren zum Herstellen einer Leistungshalbleitervorrichtung |
| CN113921614B (zh) * | 2021-12-13 | 2022-03-25 | 捷捷微电(上海)科技有限公司 | 一种半导体功率器件结构及其制造方法 |
| CN117012830B (zh) * | 2023-08-18 | 2026-01-30 | 广微集成技术(深圳)有限公司 | 一种屏蔽栅沟槽vdmos器件及其制造方法 |
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| US6593620B1 (en) * | 2000-10-06 | 2003-07-15 | General Semiconductor, Inc. | Trench DMOS transistor with embedded trench schottky rectifier |
| US6998678B2 (en) * | 2001-05-17 | 2006-02-14 | Infineon Technologies Ag | Semiconductor arrangement with a MOS-transistor and a parallel Schottky-diode |
| JP2006501666A (ja) * | 2002-10-04 | 2006-01-12 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | パワー半導体デバイス |
| JP4406535B2 (ja) * | 2003-01-14 | 2010-01-27 | 新電元工業株式会社 | ショットキーダイオード付きトランジスタ |
| JP4799829B2 (ja) * | 2003-08-27 | 2011-10-26 | 三菱電機株式会社 | 絶縁ゲート型トランジスタ及びインバータ回路 |
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| JP2011199060A (ja) | 2010-03-19 | 2011-10-06 | Toshiba Corp | 半導体装置及びその製造方法 |
| CN102859689B (zh) * | 2010-04-28 | 2015-07-01 | 日产自动车株式会社 | 半导体装置 |
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| JP2014157896A (ja) * | 2013-02-15 | 2014-08-28 | Toyota Central R&D Labs Inc | 半導体装置とその製造方法 |
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- 2015-06-23 WO PCT/JP2015/068095 patent/WO2016027564A1/ja not_active Ceased
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- 2015-06-23 CN CN201580045037.9A patent/CN106575668B/zh not_active Expired - Fee Related
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Also Published As
| Publication number | Publication date |
|---|---|
| CN106575668B (zh) | 2019-09-03 |
| US9941273B2 (en) | 2018-04-10 |
| US20170040316A1 (en) | 2017-02-09 |
| CN106575668A (zh) | 2017-04-19 |
| DE112015003835B4 (de) | 2020-10-15 |
| KR101868730B1 (ko) | 2018-06-18 |
| WO2016027564A1 (ja) | 2016-02-25 |
| TWI587478B (zh) | 2017-06-11 |
| KR20160138308A (ko) | 2016-12-02 |
| DE112015003835T5 (de) | 2017-05-11 |
| TW201624670A (zh) | 2016-07-01 |
| JP2016046377A (ja) | 2016-04-04 |
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