JP5640969B2 - 半導体素子 - Google Patents
半導体素子 Download PDFInfo
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- JP5640969B2 JP5640969B2 JP2011283871A JP2011283871A JP5640969B2 JP 5640969 B2 JP5640969 B2 JP 5640969B2 JP 2011283871 A JP2011283871 A JP 2011283871A JP 2011283871 A JP2011283871 A JP 2011283871A JP 5640969 B2 JP5640969 B2 JP 5640969B2
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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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- 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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- 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
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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]
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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
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- 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]
- H10D62/109—Reduced surface field [RESURF] PN junction structures
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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
- 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
- H10D62/13—Semiconductor regions connected to electrodes carrying current to be rectified, amplified or switched, e.g. source or drain regions
- H10D62/141—Anode or cathode regions of thyristors; Collector or emitter regions of gated bipolar-mode devices, e.g. of IGBTs
- H10D62/142—Anode regions of thyristors or collector regions of gated bipolar-mode devices
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D64/00—Electrodes of devices having potential barriers
- H10D64/60—Electrodes characterised by their materials
- H10D64/66—Electrodes having a conductor capacitively coupled to a semiconductor by an insulator, e.g. MIS electrodes
- H10D64/661—Electrodes having a conductor capacitively coupled to a semiconductor by an insulator, e.g. MIS electrodes the conductor comprising a layer of silicon contacting the insulator, e.g. polysilicon having vertical doping variation
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10P—GENERIC PROCESSES OR APPARATUS FOR THE MANUFACTURE OR TREATMENT OF DEVICES COVERED BY CLASS H10
- H10P32/00—Diffusion of dopants within, into or out of wafers, substrates or parts of devices
- H10P32/10—Diffusion of dopants within, into or out of semiconductor bodies or layers
- H10P32/14—Diffusion of dopants within, into or out of semiconductor bodies or layers within a single semiconductor body or layer in a solid phase; between different semiconductor bodies or layers, both in a solid phase
- H10P32/1404—Diffusion of dopants within, into or out of semiconductor bodies or layers within a single semiconductor body or layer in a solid phase; between different semiconductor bodies or layers, both in a solid phase using predeposition followed by drive-in of impurities into the semiconductor surface, e.g. predeposition from a gaseous phase
- H10P32/1406—Diffusion of dopants within, into or out of semiconductor bodies or layers within a single semiconductor body or layer in a solid phase; between different semiconductor bodies or layers, both in a solid phase using predeposition followed by drive-in of impurities into the semiconductor surface, e.g. predeposition from a gaseous phase by ion implantation
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10P—GENERIC PROCESSES OR APPARATUS FOR THE MANUFACTURE OR TREATMENT OF DEVICES COVERED BY CLASS H10
- H10P32/00—Diffusion of dopants within, into or out of wafers, substrates or parts of devices
- H10P32/10—Diffusion of dopants within, into or out of semiconductor bodies or layers
- H10P32/17—Diffusion of dopants within, into or out of semiconductor bodies or layers characterised by the semiconductor material
- H10P32/171—Diffusion of dopants within, into or out of semiconductor bodies or layers characterised by the semiconductor material being group IV material
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- Insulated Gate Type Field-Effect Transistor (AREA)
- Electrodes Of Semiconductors (AREA)
Description
実施の形態1.
図1は、本発明の実施の形態1に係る半導体素子の平面図である。半導体素子10は、チップ中央部分に素子形成領域が設けられ、その表面にはエミッタ電極12とゲート電極パッド14が形成されている。この素子形成領域を囲むように、つまりチップの外周部分に電界緩和領域が設けられ、その表面をパッシベーション膜16で覆っている。
図6は、本発明の実施の形態2に係る半導体素子の断面図である。本発明の実施の形態2に係る半導体素子は、実施の形態1に係る半導体素子と共通点が多い。そのため、以後、実施の形態1に係る半導体素子との相違点を説明する。
図8は、本発明の実施の形態3に係る半導体素子の断面図である。本発明の実施の形態3に係る半導体素子は、実施の形態1に係る半導体素子と共通点が多い。そのため、以後、実施の形態1に係る半導体素子との相違点を説明する。
図10は、本発明の実施の形態4に係る半導体素子の断面図である。本発明の実施の形態4に係る半導体素子は、実施の形態3に係る半導体素子と共通点が多い。そのため、以後、実施の形態3に係る半導体素子との相違点を説明する。
図12は、本発明の実施の形態5に係る半導体素子の断面図である。本発明の実施の形態5に係る半導体素子は、実施の形態3に係る半導体素子と共通点が多い。そのため、以後、実施の形態3に係る半導体素子との相違点を説明する。
図13は、本発明の実施の形態6に係る半導体素子の断面図である。本発明の実施の形態6に係る半導体素子は、半導体基板20の上の構成は本発明の実施の形態1に係る半導体素子と同様であり、リサーフ層の構成は本発明の実施の形態3に係る半導体素子と同様である。
図16は、本発明の実施の形態7に係る半導体素子の断面図である。本発明の実施の形態7に係る半導体素子は、図13に示す実施の形態6に係る半導体素子と共通点が多い。そのため、以後、実施の形態6に係る半導体素子との相違点を説明する。
図19は、本発明の実施の形態8に係る半導体素子の断面図である。本発明の実施の形態8に係る半導体素子は、図6に示す実施の形態2に係る半導体素子と共通点が多い。そのため、以後、実施の形態2に係る半導体素子との相違点を説明する。
Claims (10)
- 主面を有する半導体基板と、
前記半導体基板内に形成された第1導電型の第1不純物領域と、
前記半導体基板内に前記主面に沿って形成された、第2導電型のリサーフ層と、
前記半導体基板内の前記リサーフ層の隣に前記主面に沿って形成された、第2導電型のウエル層と、
前記半導体基板内に前記第1不純物領域を介して前記リサーフ層に接するように前記主面に沿って形成された、第1導電型のチャネルストッパと、
前記ウエル層と前記リサーフ層との境界を含む領域である第1境界領域の上、及び前記リサーフ層と前記第1不純物領域との境界を含む領域である第2境界領域の上とを一体的に覆うように前記主面上に形成された絶縁膜と、
前記絶縁膜中に複数形成された下部フィールドプレートと、を備え、
前記下部フィールドプレートはすべてが前記第1境界領域の直上及び前記第2境界領域の直上を避けて形成されたことを特徴とする半導体素子。 - 前記ウエル層と接し、かつ前記絶縁膜上であって前記第1境界領域の直上に伸びるように形成されたエミッタ電極と、
前記チャネルストッパと接し、かつ前記絶縁膜上であって前記第2境界領域の直上に伸びるように形成されたチャネルストッパ電極と、
を備えたことを特徴とする請求項1に記載の半導体素子。 - 前記絶縁膜上に複数形成された上部フィールドプレートを備え、
前記下部フィールドプレートのうち前記第1境界領域に最も近い第1下部フィールドプレートと前記エミッタ電極で形成される第1静電容量、及び前記下部フィールドプレートのうち前記第2境界領域に最も近い第2下部フィールドプレートと前記チャネルストッパ電極で形成される第2静電容量は、前記下部フィールドプレートのいずれか1つと前記上部フィールドプレートのいずれか1つで形成される第3静電容量よりも大きいことを特徴とする請求項2に記載の半導体素子。 - 前記リサーフ層は、複数の第2導電型の領域で形成されたことを特徴とする請求項1乃至3のいずれか1項に記載の半導体素子。
- 前記リサーフ層は、前記ウエル層側から前記チャネルストッパ側へかけて徐々に第2導電型の不純物濃度が低減するように形成されたことを特徴とする請求項1乃至4のいずれか1項に記載の半導体素子。
- 前記ウエル層の前記リサーフ層と隣り合う部分には、前記ウエル層と前記リサーフ層との第2導電型の不純物濃度勾配を緩和するように濃度勾配緩和部が形成されたことを特徴とする請求項1乃至5のいずれか1項に記載の半導体素子。
- 主面を有する半導体基板と、
前記半導体基板内に形成された第1導電型の第1不純物領域と、
前記半導体基板内に前記主面に沿って形成された、第2導電型のリサーフ層と、
前記半導体基板内の前記リサーフ層の隣に前記主面に沿って形成された、第2導電型のウエル層と、
前記ウエル層の前記リサーフ層と隣り合う部分に、前記ウエル層と前記リサーフ層との第2導電型の不純物濃度勾配を緩和するように形成された濃度勾配緩和部と、
前記濃度勾配緩和部の直上領域に形成されたゲート配線と、
を備えたことを特徴とする半導体素子。 - 前記濃度勾配緩和部の直上領域に形成された、エミッタ電極と接続されたエミッタ接地電極を備えたことを特徴とする請求項7に記載の半導体素子。
- 前記半導体基板はワイドバンドギャップ半導体によって形成されていることを特徴とする請求項1乃至8のいずれか1項に記載の半導体素子。
- 前記ワイドバンドギャップ半導体は、炭化珪素、窒化ガリウム系材料、又はダイヤモンドであることを特徴とする請求項9に記載の半導体素子。
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011283871A JP5640969B2 (ja) | 2011-12-26 | 2011-12-26 | 半導体素子 |
| US13/619,565 US9349811B2 (en) | 2011-12-26 | 2012-09-14 | Field plate configuration of a semiconductor device |
| DE102012219644.7A DE102012219644B4 (de) | 2011-12-26 | 2012-10-26 | Halbleitervorrichtung |
| KR1020120139329A KR101516650B1 (ko) | 2011-12-26 | 2012-12-04 | 반도체 소자 |
| US15/131,230 US20160260826A1 (en) | 2011-12-26 | 2016-04-18 | Field plate configuration of a semiconductor device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011283871A JP5640969B2 (ja) | 2011-12-26 | 2011-12-26 | 半導体素子 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2013135062A JP2013135062A (ja) | 2013-07-08 |
| JP5640969B2 true JP5640969B2 (ja) | 2014-12-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2011283871A Active JP5640969B2 (ja) | 2011-12-26 | 2011-12-26 | 半導体素子 |
Country Status (4)
| Country | Link |
|---|---|
| US (2) | US9349811B2 (ja) |
| JP (1) | JP5640969B2 (ja) |
| KR (1) | KR101516650B1 (ja) |
| DE (1) | DE102012219644B4 (ja) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10861932B2 (en) | 2018-10-23 | 2020-12-08 | Mitsubishi Electric Corporation | Semiconductor device and method of manufacturing semiconductor device |
Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014060361A (ja) * | 2012-09-19 | 2014-04-03 | Toshiba Corp | 半導体装置 |
| JP2014204038A (ja) * | 2013-04-08 | 2014-10-27 | 三菱電機株式会社 | 半導体装置及びその製造方法 |
| JP2014241367A (ja) * | 2013-06-12 | 2014-12-25 | 三菱電機株式会社 | 半導体素子、半導体素子の製造方法 |
| JP6091395B2 (ja) * | 2013-10-07 | 2017-03-08 | 三菱電機株式会社 | 半導体装置およびその製造方法 |
| JP6168961B2 (ja) | 2013-10-10 | 2017-07-26 | 三菱電機株式会社 | 半導体装置 |
| CN105940495B (zh) * | 2014-01-29 | 2019-11-08 | 三菱电机株式会社 | 电力用半导体装置 |
| WO2015132847A1 (ja) * | 2014-03-03 | 2015-09-11 | 株式会社日立製作所 | Igbt,パワーモジュール,パワーモジュールの製造方法,および電力変換装置 |
| JP6019367B2 (ja) * | 2015-01-13 | 2016-11-02 | 株式会社野田スクリーン | 半導体装置 |
| JP6460127B2 (ja) * | 2015-01-14 | 2019-01-30 | 富士電機株式会社 | 半導体装置 |
| JP6421675B2 (ja) * | 2015-03-30 | 2018-11-14 | サンケン電気株式会社 | 半導体装置 |
| JP7150539B2 (ja) * | 2018-09-15 | 2022-10-11 | 株式会社東芝 | 半導体装置 |
| JP7085959B2 (ja) | 2018-10-22 | 2022-06-17 | 三菱電機株式会社 | 半導体装置 |
| JP7001050B2 (ja) * | 2018-12-28 | 2022-01-19 | 三菱電機株式会社 | 半導体装置 |
| CN116368623B (zh) | 2020-11-06 | 2025-07-29 | 三菱电机株式会社 | 半导体装置以及电力变换装置 |
| US20240153989A1 (en) * | 2022-11-09 | 2024-05-09 | Mitsubishi Electric Corporation | Semiconductor device |
| JP2025046030A (ja) * | 2023-09-21 | 2025-04-02 | ミネベアパワーデバイス株式会社 | 半導体装置の製造方法および半導体装置 |
| WO2025216180A1 (ja) * | 2024-04-10 | 2025-10-16 | ローム株式会社 | 半導体装置 |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2739004B2 (ja) | 1992-01-16 | 1998-04-08 | 三菱電機株式会社 | 半導体装置 |
| EP0702411B1 (en) * | 1994-09-16 | 2002-11-27 | Kabushiki Kaisha Toshiba | High breakdown voltage semiconductor device with a buried MOS-gate structure |
| JP2002231944A (ja) | 2001-01-31 | 2002-08-16 | Sanken Electric Co Ltd | 電力用半導体装置 |
| JP2002261283A (ja) | 2001-02-27 | 2002-09-13 | Denso Corp | 半導体装置 |
| JP4230681B2 (ja) | 2001-07-06 | 2009-02-25 | 株式会社東芝 | 高耐圧半導体装置 |
| JP2006173437A (ja) | 2004-12-17 | 2006-06-29 | Toshiba Corp | 半導体装置 |
| JP4783050B2 (ja) * | 2005-04-13 | 2011-09-28 | パナソニック株式会社 | 半導体装置及びその製造方法 |
| DE102005030886B3 (de) * | 2005-07-01 | 2007-02-08 | Infineon Technologies Ag | Schaltungsanordnung mit einem Transistorbauelement und einem Freilaufelement |
| JP2008103529A (ja) | 2006-10-19 | 2008-05-01 | Toyota Central R&D Labs Inc | 半導体装置 |
| DE102006061103B4 (de) * | 2006-12-22 | 2008-11-06 | Clariant International Ltd. | Dispersionen polymerer Öladditive |
| JP2009004668A (ja) * | 2007-06-25 | 2009-01-08 | Toshiba Corp | 半導体装置 |
| JP5391447B2 (ja) * | 2009-04-06 | 2014-01-15 | 三菱電機株式会社 | 半導体装置およびその製造方法 |
| JP5376365B2 (ja) * | 2009-04-16 | 2013-12-25 | 三菱電機株式会社 | 半導体装置 |
| JP5517688B2 (ja) * | 2010-03-24 | 2014-06-11 | 三菱電機株式会社 | 半導体装置 |
| JP5515922B2 (ja) | 2010-03-24 | 2014-06-11 | 富士電機株式会社 | 半導体装置 |
-
2011
- 2011-12-26 JP JP2011283871A patent/JP5640969B2/ja active Active
-
2012
- 2012-09-14 US US13/619,565 patent/US9349811B2/en active Active
- 2012-10-26 DE DE102012219644.7A patent/DE102012219644B4/de active Active
- 2012-12-04 KR KR1020120139329A patent/KR101516650B1/ko not_active Expired - Fee Related
-
2016
- 2016-04-18 US US15/131,230 patent/US20160260826A1/en not_active Abandoned
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10861932B2 (en) | 2018-10-23 | 2020-12-08 | Mitsubishi Electric Corporation | Semiconductor device and method of manufacturing semiconductor device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2013135062A (ja) | 2013-07-08 |
| US9349811B2 (en) | 2016-05-24 |
| KR20130074746A (ko) | 2013-07-04 |
| US20160260826A1 (en) | 2016-09-08 |
| KR101516650B1 (ko) | 2015-05-04 |
| DE102012219644A1 (de) | 2013-06-27 |
| DE102012219644B4 (de) | 2017-06-29 |
| US20130161645A1 (en) | 2013-06-27 |
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