KR100560710B1 - 전력용 반도체장치 - Google Patents
전력용 반도체장치 Download PDFInfo
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- KR100560710B1 KR100560710B1 KR1020030065119A KR20030065119A KR100560710B1 KR 100560710 B1 KR100560710 B1 KR 100560710B1 KR 1020030065119 A KR1020030065119 A KR 1020030065119A KR 20030065119 A KR20030065119 A KR 20030065119A KR 100560710 B1 KR100560710 B1 KR 100560710B1
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- 239000004065 semiconductor Substances 0.000 title claims abstract description 81
- 239000012535 impurity Substances 0.000 claims abstract description 135
- 238000009826 distribution Methods 0.000 claims abstract description 24
- 238000000034 method Methods 0.000 claims description 35
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- 230000015556 catabolic process Effects 0.000 description 36
- 239000002344 surface layer Substances 0.000 description 17
- 238000010586 diagram Methods 0.000 description 14
- 239000002019 doping agent Substances 0.000 description 12
- 230000000694 effects Effects 0.000 description 11
- 238000005468 ion implantation Methods 0.000 description 10
- 230000004048 modification Effects 0.000 description 7
- 238000012986 modification Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 4
- 239000013078 crystal Substances 0.000 description 3
- 150000002500 ions Chemical class 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000002513 implantation Methods 0.000 description 2
- PIGFYZPCRLYGLF-UHFFFAOYSA-N Aluminum nitride Chemical compound [Al]#N PIGFYZPCRLYGLF-UHFFFAOYSA-N 0.000 description 1
- JMASRVWKEDWRBT-UHFFFAOYSA-N Gallium nitride Chemical compound [Ga]#N JMASRVWKEDWRBT-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000001312 dry etching Methods 0.000 description 1
- 230000001976 improved effect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- H—ELECTRICITY
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- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/68—Types of semiconductor device ; Multistep manufacturing processes therefor controllable by only the electric current supplied, or only the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched
- H01L29/76—Unipolar devices, e.g. field effect transistors
- H01L29/772—Field effect transistors
- H01L29/78—Field effect transistors with field effect produced by an insulated gate
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- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/68—Types of semiconductor device ; Multistep manufacturing processes therefor controllable by only the electric current supplied, or only the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched
- H01L29/76—Unipolar devices, e.g. field effect transistors
- H01L29/772—Field effect transistors
- H01L29/78—Field effect transistors with field effect produced by an insulated gate
- H01L29/7801—DMOS transistors, i.e. MISFETs with a channel accommodating body or base region adjoining a drain drift region
- H01L29/7802—Vertical DMOS transistors, i.e. VDMOS transistors
- H01L29/7813—Vertical DMOS transistors, i.e. VDMOS transistors with trench gate electrode, e.g. UMOS transistors
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- H01L29/02—Semiconductor bodies ; Multistep manufacturing processes therefor
- H01L29/06—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by their shape; characterised by the shapes, relative sizes, or dispositions of the semiconductor regions ; characterised by the concentration or distribution of impurities within semiconductor regions
- H01L29/0603—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by their shape; characterised by the shapes, relative sizes, or dispositions of the semiconductor regions ; characterised by the concentration or distribution of impurities within semiconductor regions characterised by particular constructional design considerations, e.g. for preventing surface leakage, for controlling electric field concentration or for internal isolations regions
- H01L29/0607—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by their shape; characterised by the shapes, relative sizes, or dispositions of the semiconductor regions ; characterised by the concentration or distribution of impurities within semiconductor regions characterised by particular constructional design considerations, e.g. for preventing surface leakage, for controlling electric field concentration or for internal isolations regions for preventing surface leakage or controlling electric field concentration
- H01L29/0611—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by their shape; characterised by the shapes, relative sizes, or dispositions of the semiconductor regions ; characterised by the concentration or distribution of impurities within semiconductor regions characterised by particular constructional design considerations, e.g. for preventing surface leakage, for controlling electric field concentration or for internal isolations regions for preventing surface leakage or controlling electric field concentration for increasing or controlling the breakdown voltage of reverse biased devices
- H01L29/0615—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by their shape; characterised by the shapes, relative sizes, or dispositions of the semiconductor regions ; characterised by the concentration or distribution of impurities within semiconductor regions characterised by particular constructional design considerations, e.g. for preventing surface leakage, for controlling electric field concentration or for internal isolations regions for preventing surface leakage or controlling electric field concentration for increasing or controlling the breakdown voltage of reverse biased devices by the doping profile or the shape or the arrangement of the PN junction, or with supplementary regions, e.g. junction termination extension [JTE]
- H01L29/063—Reduced surface field [RESURF] pn-junction structures
- H01L29/0634—Multiple reduced surface field (multi-RESURF) structures, e.g. double RESURF, charge compensation, cool, superjunction (SJ), 3D-RESURF, composite buffer (CB) structures
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/68—Types of semiconductor device ; Multistep manufacturing processes therefor controllable by only the electric current supplied, or only the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched
- H01L29/76—Unipolar devices, e.g. field effect transistors
- H01L29/772—Field effect transistors
- H01L29/78—Field effect transistors with field effect produced by an insulated gate
- H01L29/7801—DMOS transistors, i.e. MISFETs with a channel accommodating body or base region adjoining a drain drift region
- H01L29/7802—Vertical DMOS transistors, i.e. VDMOS transistors
- H01L29/7811—Vertical DMOS transistors, i.e. VDMOS transistors with an edge termination structure
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/02—Semiconductor bodies ; Multistep manufacturing processes therefor
- H01L29/06—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by their shape; characterised by the shapes, relative sizes, or dispositions of the semiconductor regions ; characterised by the concentration or distribution of impurities within semiconductor regions
- H01L29/0603—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by their shape; characterised by the shapes, relative sizes, or dispositions of the semiconductor regions ; characterised by the concentration or distribution of impurities within semiconductor regions characterised by particular constructional design considerations, e.g. for preventing surface leakage, for controlling electric field concentration or for internal isolations regions
- H01L29/0642—Isolation within the component, i.e. internal isolation
- H01L29/0649—Dielectric regions, e.g. SiO2 regions, air gaps
- H01L29/0653—Dielectric regions, e.g. SiO2 regions, air gaps adjoining the input or output region of a field-effect device, e.g. the source or drain region
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/02—Semiconductor bodies ; Multistep manufacturing processes therefor
- H01L29/06—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by their shape; characterised by the shapes, relative sizes, or dispositions of the semiconductor regions ; characterised by the concentration or distribution of impurities within semiconductor regions
- H01L29/0684—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by their shape; characterised by the shapes, relative sizes, or dispositions of the semiconductor regions ; characterised by the concentration or distribution of impurities within semiconductor regions characterised by the shape, relative sizes or dispositions of the semiconductor regions or junctions between the regions
- H01L29/0692—Surface layout
- H01L29/0696—Surface layout of cellular field-effect devices, e.g. multicellular DMOS transistors or IGBTs
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- Ceramic Engineering (AREA)
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- Insulated Gate Type Field-Effect Transistor (AREA)
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Abstract
Description
Claims (15)
- 제1도전형의 제1반도체층과 제2도전형의 제2반도체층이 횡방향으로 주기적으로 형성되어 이루어지는 반도체층과,상기 주기적으로 형성되어 이루어지는 반도체층을 포함하여 이루어지는 전력용 반도체소자를 구비하고,상기 제1반도체층의 종방향에 있어서의 불순물량의 분포와 상기 제2반도체층의 종방향에 있어서의 불순물량의 분포가 다른 것으로 이루어진 것을 특징으로 하는 전력용 반도체장치.
- 제1항에 있어서, 상기 제2반도체층이, 개구단측의 면적이 저면측의 면적 보다도 서서히 넓어지게 되도록 종방향으로 형성된 트렌치홈의 내부에 설치되고, 종방향에 있어서의 불순물농도의 분포가 일정하며,상기 제1반도체층이 종방향에 있어서의 불순물농도의 분포가 일정하고,상기 제2반도체층이 상기 트렌치홈의 저면측의 불순물량이 개구단측의 불순물량 보다도 적은 것으로 이루어진 것을 특징으로 하는 전력용 반도체장치.
- 제1도전형의 제1반도체층과,상기 제1반도체층에 전기적으로 접속된 제1주전극,상기 제1반도체층내에 형성되고, 횡방향으로 주기적으로 배치되며, 종방향에 있어서의 불순물량의 분포가 상기 제1반도체층내의 종방향에 있어서의 불순물량의 분포와는 다른 제2도전형의 제2반도체층,상기 제1반도체층 및 제2반도체층의 표면에 선택적으로 형성된 제2도전형의 제3반도체층,상기 제3반도체층의 표면에 선택적으로 형성된 제1도전형의 제4반도체층,상기 제3반도체층 및 상기 제4반도체층의 표면에 접합하도록 형성된 제2주전극 및,상기 제1반도체층과 제3반도체층 및 제4반도체층의 표면에 게이트 절연막을 매개로 형성된 제어전극을 구비하여 이루어진 것을 특징으로 하는 전력용 반도체장치.
- 제3항에 있어서, 상기 제1반도체층이 상기 제2주전극으로부터 상기 제1주전극을 향해 종방향에 있어서의 불순물농도가 일정하고,상기 제2반도체층이 상기 제2주전극으로부터 상기 제1주전극을 향해 종방향에 있어서의 불순물농도가 작아지게 되는 분포를 갖는 것으로 이루어진 것을 특징으로 하는 전력용 반도체장치.
- 제3항에 있어서, 상기 제1반도체층이 상기 제2주전극으로부터 상기 제1주전극을 향해 종방향에 있어서의 불순물농도가 커지게 되는 분포를 갖고,상기 제2반도체층이 상기 제2주전극으로부터 상기 제1주전극을 향해 종방향에 있어서의 불순물농도가 일정한 것으로 이루어진 것을 특징으로 하는 전력용 반도체장치.
- 제3항에 있어서, 상기 제1반도체층이 상기 제2주전극으로부터 상기 제1주전극을 향해 종방향에 있어서의 불순물농도가 커지게 되는 분포를 갖고,상기 제2반도체층이 상기 제2주전극으로부터 상기 제1주전극을 향해 종방향에 있어서의 불순물농도가 작아지게 되는 분포를 갖는 것으로 이루어진 것을 특징으로 하는 전력용 반도체장치.
- 제4항에 있어서, 상기 제2반도체층의 상기 제2주전극에 가까운 일단측에 있어서의 불순물량(Nt)과 상기 제1주전극에 가까운 타단측에 있어서의 불순물량(Nb)의 비(Nt/Nb)가 1.7 이하인 것으로 이루어진 것을 특징으로 하는 전력용 반도체장치.
- 제7항에 있어서, 상기 제2반도체층의 상기 제2주전극에 가까운 일단측에 있어서의 불순물량(Nt)과 상기 제1주전극에 가까운 타단측에 있어서의 불순물량(Nb)의 비(Nt/Nb)가 1.4 이상인 것으로 이루어진 것을 특징으로 하는 전력용 반도체장치.
- 제6항에 있어서, 상기 제2반도체층의 상기 제2주전극에 가까운 일단측에 있어서의 불순물량(Nt)과 상기 제1주전극에 가까운 타단측에 있어서의 불순물량(Nb)의 비(Nt/Nb)가 1.82 이하인 것으로 이루어진 것을 특징으로 하는 전력용 반도체장치.
- 제9항에 있어서, 상기 제2반도체층의 상기 제2주전극에 가까운 일단측에 있어서의 불순물량(Nt)과 상기 제1주전극에 가까운 타단측에 있어서의 불순물량(Nb)의 비(Nt/Nb)가 1.25 이상인 것으로 이루어진 것을 특징으로 하는 전력용 반도체장치.
- 제3항에 있어서, 상기 제2반도체층의 상기 종방향에 있어서의 불순물농도의 분포는, 불순물농도가 서서히 변화하는 경사 프로파일을 갖는 것으로 이루어진 것을 특징으로 하는 전력용 반도체장치.
- 제3항에 있어서, 상기 제1반도체층의 상기 종방향에 있어서의 불순물농도의 분포는, 불순물농도가 서서히 변화하는 경사 프로파일을 갖는 것으로 이루어진 것을 특징으로 하는 전력용 반도체장치.
- 제3항에 있어서, 상기 제2반도체층의 상기 종방향에 있어서의 불순물농도의 분포는, 불순물농도가 서서히 변화하는 파형 프로파일을 갖는 것으로 이루어진 것을 특징으로 하는 전력용 반도체장치.
- 제3항에 있어서, 상기 제1반도체층의 상기 종방향에 있어서의 불순물농도의 분포는, 불순물농도가 서서히 변화하는 파형 프로파일을 갖는 것으로 이루어진 것을 특징으로 하는 전력용 반도체장치.
- 제3항에 있어서, 상기 제2반도체층이, 개구단측의 면적이 저면측의 면적 보다도 서서히 넓어지게 되도록 종방향으로 형성된 트렌치홈의 내부에 설치되고, 종방향에 있어서의 불순물농도의 분포가 일정하며,상기 제1반도체층이 종방향에 있어서의 불순물농도의 분포가 일정하고,상기 제2반도체층이 상기 트렌치홈의 저면측의 불순물량이 개구단측의 불순물량 보다도 적은 것으로 이루어진 것을 특징으로 하는 전력용 반도체장치.
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JPJP-P-2002-00279463 | 2002-09-25 | ||
JP2002279463A JP3634830B2 (ja) | 2002-09-25 | 2002-09-25 | 電力用半導体素子 |
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KR20040027352A KR20040027352A (ko) | 2004-04-01 |
KR100560710B1 true KR100560710B1 (ko) | 2006-03-16 |
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US (2) | US6888195B2 (ko) |
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CN (2) | CN100521228C (ko) |
Cited By (1)
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KR101514537B1 (ko) * | 2013-08-09 | 2015-04-22 | 삼성전기주식회사 | 전력 반도체 소자 및 그 제조 방법 |
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DE102004015921B4 (de) * | 2004-03-31 | 2006-06-14 | Infineon Technologies Ag | Rückwärts sperrendes Halbleiterbauelement mit Ladungskompensation |
JP2006005275A (ja) * | 2004-06-21 | 2006-01-05 | Toshiba Corp | 電力用半導体素子 |
JP4851694B2 (ja) * | 2004-08-24 | 2012-01-11 | 株式会社東芝 | 半導体装置の製造方法 |
JP4768259B2 (ja) | 2004-12-21 | 2011-09-07 | 株式会社東芝 | 電力用半導体装置 |
JP2006186145A (ja) * | 2004-12-28 | 2006-07-13 | Toshiba Corp | 半導体装置及びその製造方法 |
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KR20040027352A (ko) | 2004-04-01 |
CN100550416C (zh) | 2009-10-14 |
CN101071822A (zh) | 2007-11-14 |
US6888195B2 (en) | 2005-05-03 |
US20040056306A1 (en) | 2004-03-25 |
JP2004119611A (ja) | 2004-04-15 |
JP3634830B2 (ja) | 2005-03-30 |
CN1494160A (zh) | 2004-05-05 |
USRE46799E1 (en) | 2018-04-17 |
CN100521228C (zh) | 2009-07-29 |
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