KR100990419B1 - 절연 게이트형 반도체 소자의 제조 방법 - Google Patents
절연 게이트형 반도체 소자의 제조 방법 Download PDFInfo
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- KR100990419B1 KR100990419B1 KR1020080077816A KR20080077816A KR100990419B1 KR 100990419 B1 KR100990419 B1 KR 100990419B1 KR 1020080077816 A KR1020080077816 A KR 1020080077816A KR 20080077816 A KR20080077816 A KR 20080077816A KR 100990419 B1 KR100990419 B1 KR 100990419B1
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims abstract description 23
- 239000000758 substrate Substances 0.000 claims abstract description 70
- 229910021420 polycrystalline silicon Inorganic materials 0.000 claims abstract description 59
- 229920005591 polysilicon Polymers 0.000 claims abstract description 59
- 239000012535 impurity Substances 0.000 claims abstract description 51
- 239000000470 constituent Substances 0.000 claims description 17
- 238000009792 diffusion process Methods 0.000 claims description 15
- 239000000463 material Substances 0.000 claims description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 52
- 229910052814 silicon oxide Inorganic materials 0.000 description 52
- 238000001312 dry etching Methods 0.000 description 8
- 230000015556 catabolic process Effects 0.000 description 6
- 238000001039 wet etching Methods 0.000 description 6
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 5
- 238000005530 etching Methods 0.000 description 5
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- 239000010703 silicon Substances 0.000 description 5
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- 238000002488 metal-organic chemical vapour deposition Methods 0.000 description 4
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- 229910052581 Si3N4 Inorganic materials 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000011229 interlayer Substances 0.000 description 3
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
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- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 229910052733 gallium Inorganic materials 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
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- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- 229910001218 Gallium arsenide Inorganic materials 0.000 description 1
- 229910000577 Silicon-germanium Inorganic materials 0.000 description 1
- LEVVHYCKPQWKOP-UHFFFAOYSA-N [Si].[Ge] Chemical compound [Si].[Ge] LEVVHYCKPQWKOP-UHFFFAOYSA-N 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
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- 229910052757 nitrogen Inorganic materials 0.000 description 1
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Classifications
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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
- H01L29/66007—Multistep manufacturing processes
- H01L29/66075—Multistep manufacturing processes of devices having semiconductor bodies comprising group 14 or group 13/15 materials
- H01L29/66227—Multistep manufacturing processes of devices having semiconductor bodies comprising group 14 or group 13/15 materials the devices being controllable only by the electric current supplied or the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched, e.g. three-terminal devices
- H01L29/66409—Unipolar field-effect transistors
- H01L29/66477—Unipolar field-effect transistors with an insulated gate, i.e. MISFET
- H01L29/66674—DMOS transistors, i.e. MISFETs with a channel accommodating body or base region adjoining a drain drift region
- H01L29/66712—Vertical DMOS transistors, i.e. VDMOS transistors
-
- 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
- H01L21/70—Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
- H01L21/77—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate
- H01L21/78—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices
- H01L21/82—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices to produce devices, e.g. integrated circuits, each consisting of a plurality of components
- H01L21/822—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices to produce devices, e.g. integrated circuits, each consisting of a plurality of components the substrate being a semiconductor, using silicon technology
- H01L21/8232—Field-effect technology
- H01L21/8234—MIS technology, i.e. integration processes of field effect transistors of the conductor-insulator-semiconductor type
- H01L21/823487—MIS technology, i.e. integration processes of field effect transistors of the conductor-insulator-semiconductor type with a particular manufacturing method of vertical transistor structures, i.e. with channel vertical to the substrate surface
-
- 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
-
- 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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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Electrodes Of Semiconductors (AREA)
- Insulated Gate Type Field-Effect Transistor (AREA)
Abstract
Description
Claims (9)
- 반도체 기판에 불순물을 도입하여, 상기 반도체 기판의 표면 영역에 반도체 영역을 형성하는 단계를 포함하는 절연 게이트형 반도체 소자의 제조 방법으로서,상기 반도체 기판의 한쪽의 주면(主面)에, 상기 불순물의 도입을 저지 가능한 두께의 제1 절연막을 형성하고, 형성된 제1 절연막을 선택적으로 습식 에칭하여, 상기 반도체 기판의 한쪽의 주면에, 개구부를 가지는 제1 절연막을 형성하는 제1 절연막 형성 단계와,상기 제1 절연막의 개구부에, 상기 제1 절연막보다 얇고, 상기 불순물을 도입 가능한 두께의 제2 절연막을 형성하는 제2 절연막 형성 단계와,상기 제1 절연막 및 상기 제2 절연막의 한쪽의 주면에, 상기 불순물의 도입을 저지 가능하며 게이트 전극을 구성하는 재료로 이루어지는 게이트 전극 구성 막을 형성하고, 형성된 게이트 전극 구성 막을 선택적으로 건식 에칭하여, 상기 제1 절연막 및 상기 제2 절연막의 한쪽의 주면에, 개구부를 가지는 게이트 전극 구성 막을 형성하는 게이트 전극 구성 막 형성 단계와,상기 제1 절연막 및 상기 게이트 전극 구성 막을 마스크로 하여, 상기 마스크의 개구부로부터 상기 반도체 기판에 불순물을 도입하고, 상기 반도체 기판의 표면 영역에 반도체 영역을 형성하는 반도체 영역 형성 단계를 포함하고,상기 게이트 전극 구성 막 형성 단계에서는, 상기 마스크의 개구부가 상기 게이트 전극 구성 막의 개구부로 되도록, 상기 게이트 전극 구성 막을 형성하는, 절연 게이트형 반도체 소자의 제조 방법.
- 제1항에 있어서,상기 게이트 전극 구성 막 형성 단계에서는, 상기 제2 절연막의 한쪽의 주면에 제1 개구부를 가지는 제1 게이트 전극 구성 막을 형성하고, 또한 상기 제1 절연막의 개구부의 벽면을 덮도록 설치된 제2 개구부를 가지는 제2 게이트 전극 구성 막을 형성하는, 절연 게이트형 반도체 소자의 제조 방법.
- 제1항에 있어서,상기 반도체 기판은 제1 도전형의 제1 반도체 영역을 가지고,상기 반도체 영역 형성 단계에서는, 상기 제1 반도체 영역의 표면 영역에 형성된 복수개의 제2 도전형의 제2 반도체 영역을 형성하고, 또한 상기 제1 반도체 영역의 표면 영역에 상기 복수개의 제2 반도체 영역을 에워싸도록 환형으로 형성된 제2 도전형의 환형 반도체 영역을 형성하는, 절연 게이트형 반도체 소자의 제조 방법.
- 제3항에 있어서,상기 반도체 영역 형성 단계에서는, 상기 제1 게이트 전극 구성 막의 개구부에 제2 도전형의 불순물을 도입하여 상기 제2 반도체 영역을 형성하고, 또한 상기 제2 게이트 전극 구성 막의 개구부에 제2 도전형의 불순물을 도입하여 상기 환형 반도체 영역을 형성하는, 절연 게이트형 반도체 소자의 제조 방법.
- 제4항에 있어서,상기 환형 반도체 영역의 폭을 L1, 상기 제1 절연막의 개구부의 폭을 L2, 도입된 상기 불순물의 확산폭을 L3로 했을 때, L2 > L1 - 2L3의 관계를 만족시키는, 절연 게이트형 반도체 소자의 제조 방법.
- 제5항에 있어서,상기 제1 절연막의 개구부의 벽면에 설치된 상기 제2 게이트 전극 구성 막의 폭을 L4로 했을 때, L2 - 2L4 + 2L3 = L1의 관계를 만족시키는, 절연 게이트형 반도체 소자의 제조 방법.
- 제3항에 있어서,상기 환형 반도체 영역은 필드 리미팅 링인, 절연 게이트형 반도체 소자의 제조 방법.
- 제1항에 있어서,상기 게이트 전극 구성 막 형성 단계에서는, 상기 제1 절연막 및 상기 제2 절연막의 한쪽의 주면에, 개구부를 가지는 폴리실리콘막을 형성하고,상기 반도체 영역 형성 단계에서는, 상기 제1 절연막 및 상기 폴리실리콘막을 마스크로 하여, 상기 반도체 기판의 표면 영역에 반도체 영역을 형성하고, 또한 상기 폴리실리콘막에 도전성을 부여하는, 절연 게이트형 반도체 소자의 제조 방법.
- 제2항에 있어서,상기 제2 개구부는, 형성해야 할 필드 리미팅 링의 가로 폭에 비해 상대적으로 큰 가로폭을 가지도록 형성되는, 절연 게이트형 반도체 소자의 제조 방법.
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US9406543B2 (en) | 2013-12-10 | 2016-08-02 | Samsung Electronics Co., Ltd. | Semiconductor power devices and methods of manufacturing the same |
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CN106298538B (zh) * | 2015-06-26 | 2019-12-24 | 北大方正集团有限公司 | Vdmos分压环的制造方法 |
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US5474946A (en) * | 1995-02-17 | 1995-12-12 | International Rectifier Corporation | Reduced mask process for manufacture of MOS gated devices |
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JP2003163351A (ja) * | 2001-11-27 | 2003-06-06 | Nec Kansai Ltd | 絶縁ゲート型半導体装置およびその製造方法 |
JP4929559B2 (ja) * | 2003-10-30 | 2012-05-09 | サンケン電気株式会社 | 半導体素子 |
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