KR101985398B1 - 반도체 장치 제조 방법 - Google Patents
반도체 장치 제조 방법 Download PDFInfo
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- KR101985398B1 KR101985398B1 KR1020130019179A KR20130019179A KR101985398B1 KR 101985398 B1 KR101985398 B1 KR 101985398B1 KR 1020130019179 A KR1020130019179 A KR 1020130019179A KR 20130019179 A KR20130019179 A KR 20130019179A KR 101985398 B1 KR101985398 B1 KR 101985398B1
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- H—ELECTRICITY
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- H10D30/01—Manufacture or treatment
- H10D30/021—Manufacture or treatment of FETs having insulated gates [IGFET]
- H10D30/028—Manufacture or treatment of FETs having insulated gates [IGFET] of double-diffused metal oxide semiconductor [DMOS] FETs
- H10D30/0291—Manufacture or treatment of FETs having insulated gates [IGFET] of double-diffused metal oxide semiconductor [DMOS] FETs of vertical DMOS [VDMOS] FETs
- H10D30/0297—Manufacture or treatment of FETs having insulated gates [IGFET] of double-diffused metal oxide semiconductor [DMOS] FETs of vertical DMOS [VDMOS] FETs using recessing of the gate electrodes, e.g. to form trench gate electrodes
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- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D30/00—Field-effect transistors [FET]
- H10D30/60—Insulated-gate field-effect transistors [IGFET]
- H10D30/64—Double-diffused metal-oxide semiconductor [DMOS] FETs
- H10D30/66—Vertical DMOS [VDMOS] FETs
- H10D30/663—Vertical DMOS [VDMOS] FETs having both source contacts and drain contacts on the same surface, i.e. up-drain VDMOS
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D30/00—Field-effect transistors [FET]
- H10D30/60—Insulated-gate field-effect transistors [IGFET]
- H10D30/64—Double-diffused metal-oxide semiconductor [DMOS] FETs
- H10D30/66—Vertical DMOS [VDMOS] FETs
- H10D30/668—Vertical DMOS [VDMOS] FETs having trench gate electrodes, e.g. UMOS transistors
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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
- H10D62/103—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
- H10D62/111—Multiple RESURF structures, e.g. double RESURF or 3D-RESURF 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
- H10D62/13—Semiconductor regions connected to electrodes carrying current to be rectified, amplified or switched, e.g. source or drain regions
- H10D62/149—Source or drain regions of field-effect devices
- H10D62/151—Source or drain regions of field-effect devices of IGFETs
- H10D62/156—Drain regions of DMOS transistors
- H10D62/157—Impurity concentrations or distributions
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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
- H10D62/149—Source or drain regions of field-effect devices
- H10D62/151—Source or drain regions of field-effect devices of IGFETs
- H10D62/156—Drain regions of DMOS transistors
- H10D62/159—Shapes
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/26—Bombardment with radiation
- H01L21/263—Bombardment with radiation with high-energy radiation
- H01L21/265—Bombardment with radiation with high-energy radiation producing ion implantation
- H01L21/26586—Bombardment with radiation with high-energy radiation producing ion implantation characterised by the angle between the ion beam and the crystal planes or the main crystal surface
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- Microelectronics & Electronic Packaging (AREA)
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- Insulated Gate Type Field-Effect Transistor (AREA)
- Metal-Oxide And Bipolar Metal-Oxide Semiconductor Integrated Circuits (AREA)
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Abstract
[해결 수단] 트렌치 게이트를 가지는 종형 MOS 트랜지스터에 있어서, 게이트 전극과 게이트 전극하의 N형 고농도 매립층까지의 거리를 종래 구조보다 길게 하고, 또한 그 사이를 P형의 트렌치 바닥면 하방 영역(5)으로 함으로써, 드레인 영역에 고전압이 인가되고, 게이트 전극에 OV가 인가되었을 경우에, 트렌치 바닥면 하방 영역(5)이 공핍화함으로써 오프 상태의 내압을 높게 하는 것이 가능하다.
Description
도 2는 본 발명의 제2 실시예의 반도체 장치의 제조 방법을 도시하는 공정순 단면도이다.
도 3은 종래의 반도체 장치를 도시하는 단면 모식도이다.
도 4는 트렌치 바닥부의 게이트 절연막의 두께를 측면보다 두껍게 한 반도체 장치를 도시하는 단면 모식도이다.
3: N-Epi층 4: P형 보디 영역
5: 트렌치 바닥면 하방 영역 6: N형 소스 고농도 영역
7: P형 보디 콘택트 영역 8: 트렌치
9: 희생 산화막 10: 게이트 절연막
11: 게이트 전극 12: 상쇄 영역
13: 레지스트 14: 질화막
Claims (8)
- 제1 도전형의 반도체 기판에, 제2 도전형의 매립층을 형성하는 공정과,
상기 매립층 상에 제2 도전형의 에피택셜층을 형성하는 공정과,
상기 에피택셜층 내에 트렌치를 형성하는 공정과,
상기 트렌치의 바닥면의 하방으로서, 상기 매립층과 에피택셜층의 경계면보다 아래에 분포의 중심을 가지는, 제1 도전형의 상쇄 영역을, 상기 매립층의 도전형을 없애기 위해 부분적으로 형성하는 공정과,
상기 에피택셜층 내의 상기 트렌치의 측면 주변에, 제1 도전형의 보디 영역을 형성하고, 동시에 상기 트렌치의 바닥면의 하방에 제1 도전형의 트렌치 바닥면 하방 영역을 상기 상쇄 영역에 연속하여 형성하는 공정과,
상기 트렌치의 내벽에 게이트 절연막을 형성하는 공정과,
상기 게이트 절연막에 접하며, 상기 트렌치 내에 다결정 실리콘을 충전하여 게이트 전극을 형성하는 공정과,
상기 보디 영역 표면에 제2 도전형의 소스 영역을 형성하는 공정과,
상기 보디 영역 표면에 제1 도전형의 보디 콘택트 영역을 형성하는 공정으로 이루어지는, 반도체 장치의 제조 방법. - 청구항 1에 있어서,
상기 제2 도전형의 에피택셜층은 5×1016/cm3 내지 2×1017/cm3의 농도로 4.5μm 내지 5.0μm의 두께를 가지는, 반도체 장치의 제조 방법. - 청구항 1에 있어서,
상기 보디 영역과 상기 트렌치 바닥면 하방 영역을 동시에 형성하는 공정은, 붕소를 이용한 이온 주입이며, 그 조건은, 가속 에너지:150KeV~250KeV, 농도:1×1017/cm3~5×1017/cm3, 이온 주입 각도: 3°~10°, 및 90°마다의 4단계 회전 주입인, 반도체 장치의 제조 방법. - 제1 도전형의 반도체 기판에, 제2 도전형의 에피택셜층을 형성하는 공정과,
상기 제2 도전형의 에피택셜층 내에 트렌치를 형성하는 공정과,
상기 반도체 기판의 표면 및 상기 트렌치의 내벽에 희생 산화막을 형성하는 공정과,
상기 희생 산화막이 형성된 트렌치 내에, 상기 트렌치의 깊이의 절반 이하가 되는 두께를 가지는 레지스트를 배치하는 공정과,
상기 희생 산화막 및 상기 레지스트를 통하여, 상기 에피택셜층과 상기 반도체 기판의 경계에 제2 도전형의 매립층을 이온 주입에 의해 형성하는 공정과,
상기 레지스트를 제거한 후에, 상기 에피택셜층 내의 상기 트렌치의 측면 주변에 제1 도전형의 보디 영역을 형성하고, 동시에 상기 트렌치의 바닥면의 하방에 제1 도전형의 트렌치 바닥면 하방 영역을 상기 매립층에 연속하여 형성하는 공정과,
상기 희생 산화막을 제거하고, 상기 트렌치의 내벽에 게이트 절연막을 형성하는 공정과,
상기 게이트 절연막에 접하며, 상기 트렌치 내에 다결정 실리콘을 충전하여 게이트 전극을 형성하는 공정과,
상기 보디 영역 표면에 제2 도전형의 소스 영역을 형성하는 공정과,
상기 보디 영역 표면에 제1 도전형의 보디 콘택트 영역을 형성하는 공정으로 이루어지는, 반도체 장치의 제조 방법. - 청구항 4에 있어서,
상기 매립층을 이온 주입에 의해 형성하는 공정은, 이온 주입 각도가 0°인, 반도체 장치의 제조 방법. - 삭제
- 삭제
- 삭제
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JPJP-P-2012-042052 | 2012-02-28 | ||
JP2012042052A JP6022777B2 (ja) | 2012-02-28 | 2012-02-28 | 半導体装置の製造方法 |
Publications (2)
Publication Number | Publication Date |
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KR20130098913A KR20130098913A (ko) | 2013-09-05 |
KR101985398B1 true KR101985398B1 (ko) | 2019-06-03 |
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Application Number | Title | Priority Date | Filing Date |
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KR1020130019179A Expired - Fee Related KR101985398B1 (ko) | 2012-02-28 | 2013-02-22 | 반도체 장치 제조 방법 |
Country Status (5)
Country | Link |
---|---|
US (2) | US8859369B2 (ko) |
JP (1) | JP6022777B2 (ko) |
KR (1) | KR101985398B1 (ko) |
CN (1) | CN103295910B (ko) |
TW (1) | TWI555095B (ko) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
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US9541386B2 (en) * | 2012-03-21 | 2017-01-10 | Semiconductor Energy Laboratory Co., Ltd. | Distance measurement device and distance measurement system |
JP6697909B2 (ja) * | 2016-03-15 | 2020-05-27 | エイブリック株式会社 | 半導体装置とその製造方法 |
JP6896593B2 (ja) * | 2017-11-22 | 2021-06-30 | 株式会社東芝 | 半導体装置、半導体装置の製造方法、インバータ回路、駆動装置、車両、及び、昇降機 |
CN118056281B (zh) * | 2022-02-24 | 2025-02-18 | 新唐科技日本株式会社 | 半导体装置 |
Citations (2)
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JP2002100771A (ja) * | 2000-09-25 | 2002-04-05 | Toshiba Corp | 半導体装置及びその製造方法 |
JP2009200300A (ja) * | 2008-02-22 | 2009-09-03 | Fuji Electric Device Technology Co Ltd | 半導体装置およびその製造方法 |
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JPS63173371A (ja) * | 1987-01-13 | 1988-07-16 | Fujitsu Ltd | 高耐圧絶縁ゲ−ト型電界効果トランジスタ |
JPH07235672A (ja) * | 1994-02-21 | 1995-09-05 | Mitsubishi Electric Corp | 絶縁ゲート型半導体装置およびその製造方法 |
JPH07326742A (ja) * | 1994-05-30 | 1995-12-12 | Toshiba Corp | 半導体装置およびその製造方法 |
JP4091242B2 (ja) * | 1999-10-18 | 2008-05-28 | セイコーインスツル株式会社 | 縦形mosトランジスタ及びその製造方法 |
JP3910335B2 (ja) * | 2000-03-22 | 2007-04-25 | セイコーインスツル株式会社 | 縦形mosトランジスタ及びその製造方法 |
JP2002299629A (ja) * | 2001-03-30 | 2002-10-11 | Matsushita Electric Ind Co Ltd | ポリシリコン薄膜半導体およびポリシリコン薄膜半導体の製造方法 |
JP4073176B2 (ja) | 2001-04-02 | 2008-04-09 | 新電元工業株式会社 | 半導体装置およびその製造方法 |
US7291884B2 (en) * | 2001-07-03 | 2007-11-06 | Siliconix Incorporated | Trench MIS device having implanted drain-drift region and thick bottom oxide |
JP4721653B2 (ja) * | 2004-05-12 | 2011-07-13 | トヨタ自動車株式会社 | 絶縁ゲート型半導体装置 |
US7750412B2 (en) * | 2008-08-06 | 2010-07-06 | Fairchild Semiconductor Corporation | Rectifier with PN clamp regions under trenches |
US8058685B2 (en) * | 2009-07-08 | 2011-11-15 | Force Mos Technology Co., Ltd. | Trench MOSFET structures using three masks process |
JP2012069824A (ja) * | 2010-09-24 | 2012-04-05 | Seiko Instruments Inc | 半導体装置および半導体装置の製造方法 |
US20130299901A1 (en) * | 2011-09-29 | 2013-11-14 | Force Mos Technology Co., Ltd. | Trench mosfet structures using three masks process |
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2012
- 2012-02-28 JP JP2012042052A patent/JP6022777B2/ja not_active Expired - Fee Related
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2013
- 2013-01-30 TW TW102103497A patent/TWI555095B/zh not_active IP Right Cessation
- 2013-02-07 US US13/761,304 patent/US8859369B2/en not_active Expired - Fee Related
- 2013-02-22 KR KR1020130019179A patent/KR101985398B1/ko not_active Expired - Fee Related
- 2013-02-28 CN CN201310063323.0A patent/CN103295910B/zh not_active Expired - Fee Related
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2014
- 2014-09-05 US US14/478,044 patent/US9231101B2/en not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002100771A (ja) * | 2000-09-25 | 2002-04-05 | Toshiba Corp | 半導体装置及びその製造方法 |
JP2009200300A (ja) * | 2008-02-22 | 2009-09-03 | Fuji Electric Device Technology Co Ltd | 半導体装置およびその製造方法 |
Also Published As
Publication number | Publication date |
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TWI555095B (zh) | 2016-10-21 |
KR20130098913A (ko) | 2013-09-05 |
JP6022777B2 (ja) | 2016-11-09 |
US20140374821A1 (en) | 2014-12-25 |
US8859369B2 (en) | 2014-10-14 |
CN103295910A (zh) | 2013-09-11 |
TW201349356A (zh) | 2013-12-01 |
US9231101B2 (en) | 2016-01-05 |
CN103295910B (zh) | 2017-04-12 |
US20130221432A1 (en) | 2013-08-29 |
JP2013179171A (ja) | 2013-09-09 |
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