KR100873358B1 - 반도체소자의 소자분리막 제조방법 - Google Patents
반도체소자의 소자분리막 제조방법 Download PDFInfo
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- KR100873358B1 KR100873358B1 KR1020020066991A KR20020066991A KR100873358B1 KR 100873358 B1 KR100873358 B1 KR 100873358B1 KR 1020020066991 A KR1020020066991 A KR 1020020066991A KR 20020066991 A KR20020066991 A KR 20020066991A KR 100873358 B1 KR100873358 B1 KR 100873358B1
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- Prior art keywords
- trench
- etching
- silicon substrate
- semiconductor device
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- 238000000034 method Methods 0.000 title claims abstract description 30
- 238000002955 isolation Methods 0.000 title abstract description 35
- 239000004065 semiconductor Substances 0.000 title abstract description 17
- 238000005530 etching Methods 0.000 claims abstract description 33
- 239000000758 substrate Substances 0.000 claims abstract description 27
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 25
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 25
- 239000010703 silicon Substances 0.000 claims abstract description 25
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 15
- 238000009279 wet oxidation reaction Methods 0.000 claims abstract description 6
- 150000004767 nitrides Chemical class 0.000 claims description 24
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 238000001312 dry etching Methods 0.000 abstract description 3
- 230000010354 integration Effects 0.000 abstract 1
- 239000000126 substance Substances 0.000 description 4
- 238000007517 polishing process Methods 0.000 description 3
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- 239000012298 atmosphere Substances 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012299 nitrogen atmosphere Substances 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000001039 wet etching Methods 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
- 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
- H01L21/71—Manufacture of specific parts of devices defined in group H01L21/70
- H01L21/76—Making of isolation regions between components
- H01L21/762—Dielectric regions, e.g. EPIC dielectric isolation, LOCOS; Trench refilling techniques, SOI technology, use of channel stoppers
- H01L21/76224—Dielectric regions, e.g. EPIC dielectric isolation, LOCOS; Trench refilling techniques, SOI technology, use of channel stoppers using trench refilling with dielectric materials
- H01L21/76232—Dielectric regions, e.g. EPIC dielectric isolation, LOCOS; Trench refilling techniques, SOI technology, use of channel stoppers using trench refilling with dielectric materials of trenches having a shape other than rectangular or V-shape, e.g. rounded corners, oblique or rounded trench walls
- H01L21/76235—Dielectric regions, e.g. EPIC dielectric isolation, LOCOS; Trench refilling techniques, SOI technology, use of channel stoppers using trench refilling with dielectric materials of trenches having a shape other than rectangular or V-shape, e.g. rounded corners, oblique or rounded trench walls trench shape altered by a local oxidation of silicon process step, e.g. trench corner rounding by LOCOS
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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
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
- H01L21/302—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to change their surface-physical characteristics or shape, e.g. etching, polishing, cutting
- H01L21/306—Chemical or electrical treatment, e.g. electrolytic etching
- H01L21/30604—Chemical etching
-
- 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
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
- H01L21/302—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to change their surface-physical characteristics or shape, e.g. etching, polishing, cutting
- H01L21/306—Chemical or electrical treatment, e.g. electrolytic etching
- H01L21/3065—Plasma etching; Reactive-ion etching
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Chemical & Material Sciences (AREA)
- Plasma & Fusion (AREA)
- Element Separation (AREA)
Abstract
Description
그 다음, 도 2f에 도시된 바와 같이, 상기 트렌치(140)가 형성된 결과물에 750 ~ 950℃의 저온 습식(wet) 옥시데이션 분위기에서 서서히 열처리를 진행하여 트렌치(140) 내부 벽면에 희생산화막(150)을 형성한다. 그 결과, 상기 트렌치 식각 공정 시 받은 실리콘기판(100)의 데미지(damage)가 완화되며 트렌치(140)의 하부 모서리가 라운딩된다.
Claims (5)
- 패드산화막과 패드질화막이 순차적으로 형성된 실리콘기판에서, 상기 패드질화막을 선택적으로 식각하여 패드산화막 상부에 트렌치 형성영역을 정의하는 단계;상기 패드질화막을 식각마스크로 트렌치 형성영역보다 넓게 패드산화막을 풀백 식각하여 상기 실리콘기판을 노출시키는 단계;제1 바이어스 파워로 상기 실리콘기판의 노출된 영역을, 가장자리가 라운드되도록 하면서 일정 깊이 식각하는 단계;상기 제1 바이어스 파워보다 높은 제2 바이어스 파워로 상기 실리콘기판의 노출된 영역을 일정 깊이 식각하여 트렌치를 형성하는 단계;습식산화 공정을 진행하여 상기 트렌치의 내벽에 희생산화막을 형성하는 단계; 및상기 트렌치를 절연막으로 매립하는 단계를 포함하여 이루어진 것을 특징으로 하는 반도체소자의 소자분리막 제조방법.
- 제 1항에 있어서, 상기 패드산화막은 180 ~ 220Å 두께로 두껍게 형성하는 것을 특징으로 하는 반도체소자의 소자분리막 제조방법.
- 제 1항에 있어서, 상기 풀 백 식각은 패드산화막 측벽을 180 ~ 220Å 타겟으로 불산용액을 사용하여 진행하는 것을 특징으로 하는 반도체소자의 소자분리막 제조방법.
- 제 1항에 있어서,상기 제1 바이어스 파워를 이용하는 식각 및 제2 바이어스 파워를 이용하는 식각은 Cl2 가스를 사용하여 진행하는 것을 특징으로 하는 반도체소자의 소자분리막 제조방법.
- 제 1항에 있어서, 상기 습식산화 공정은 750 ~ 950 ℃의 저온에서 5 ~ 30분 동안 진행하는 것을 특징으로 하는 반도체소자의 소자분리막 제조방법.
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KR1020020066991A KR100873358B1 (ko) | 2002-10-31 | 2002-10-31 | 반도체소자의 소자분리막 제조방법 |
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KR1020020066991A KR100873358B1 (ko) | 2002-10-31 | 2002-10-31 | 반도체소자의 소자분리막 제조방법 |
Publications (2)
Publication Number | Publication Date |
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KR20040038117A KR20040038117A (ko) | 2004-05-08 |
KR100873358B1 true KR100873358B1 (ko) | 2008-12-10 |
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Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100725350B1 (ko) * | 2005-12-28 | 2007-06-07 | 동부일렉트로닉스 주식회사 | 반도체 제조공정에서 에스티아이 형성방법 및 그에스티아이를 포함하는 반도체 소자 |
KR100968608B1 (ko) * | 2008-02-04 | 2010-07-08 | 김현주 | 세탁물 건조대의 접이식 받침대 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH10229119A (ja) * | 1997-02-18 | 1998-08-25 | Hitachi Ltd | 半導体装置及びその製造方法 |
KR20000051689A (ko) * | 1999-01-25 | 2000-08-16 | 김규현 | 반도체 소자 분리를 위한 얕은 트렌치 제조 방법 |
KR20010020932A (ko) * | 1999-06-01 | 2001-03-15 | 가나이 쓰토무 | 반도체장치의 제조방법 및 반도체장치 |
KR20010057918A (ko) * | 1999-12-23 | 2001-07-05 | 윤종용 | 트렌치형 소자분리를 위한 트렌치 식각방법 |
KR20020058588A (ko) * | 2000-12-30 | 2002-07-12 | 박종섭 | 반도체 소자의 제조방법 |
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2002
- 2002-10-31 KR KR1020020066991A patent/KR100873358B1/ko active IP Right Grant
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH10229119A (ja) * | 1997-02-18 | 1998-08-25 | Hitachi Ltd | 半導体装置及びその製造方法 |
KR20000051689A (ko) * | 1999-01-25 | 2000-08-16 | 김규현 | 반도체 소자 분리를 위한 얕은 트렌치 제조 방법 |
KR20010020932A (ko) * | 1999-06-01 | 2001-03-15 | 가나이 쓰토무 | 반도체장치의 제조방법 및 반도체장치 |
KR20010057918A (ko) * | 1999-12-23 | 2001-07-05 | 윤종용 | 트렌치형 소자분리를 위한 트렌치 식각방법 |
KR20020058588A (ko) * | 2000-12-30 | 2002-07-12 | 박종섭 | 반도체 소자의 제조방법 |
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