KR100258653B1 - 집적 회로의 실리콘층 내에 매립된 분리 부재 및 그의 형성 방법 - Google Patents
집적 회로의 실리콘층 내에 매립된 분리 부재 및 그의 형성 방법 Download PDFInfo
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- KR100258653B1 KR100258653B1 KR1019970050709A KR19970050709A KR100258653B1 KR 100258653 B1 KR100258653 B1 KR 100258653B1 KR 1019970050709 A KR1019970050709 A KR 1019970050709A KR 19970050709 A KR19970050709 A KR 19970050709A KR 100258653 B1 KR100258653 B1 KR 100258653B1
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- integrated circuit
- nitride
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- silicon
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- 238000002955 isolation Methods 0.000 title claims abstract description 26
- 150000004767 nitrides Chemical class 0.000 claims abstract description 46
- 238000000034 method Methods 0.000 claims abstract description 36
- 239000010410 layer Substances 0.000 claims description 113
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 23
- 229910052710 silicon Inorganic materials 0.000 claims description 23
- 239000010703 silicon Substances 0.000 claims description 23
- 238000000151 deposition Methods 0.000 claims description 14
- 239000000945 filler Substances 0.000 claims description 14
- 238000000926 separation method Methods 0.000 claims description 10
- 230000001681 protective effect Effects 0.000 claims description 8
- 239000000758 substrate Substances 0.000 claims description 8
- 230000008021 deposition Effects 0.000 claims description 5
- 238000005530 etching Methods 0.000 claims description 5
- 239000011241 protective layer Substances 0.000 claims description 4
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical group CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 claims description 3
- 230000001590 oxidative effect Effects 0.000 claims description 3
- 230000013011 mating Effects 0.000 claims 7
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 abstract description 22
- 230000008569 process Effects 0.000 abstract description 16
- 229910000147 aluminium phosphate Inorganic materials 0.000 abstract description 11
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 abstract description 7
- 230000004888 barrier function Effects 0.000 abstract description 7
- 238000009792 diffusion process Methods 0.000 abstract description 7
- 229910052581 Si3N4 Inorganic materials 0.000 description 18
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 18
- 239000010408 film Substances 0.000 description 7
- 230000003647 oxidation Effects 0.000 description 6
- 238000007254 oxidation reaction Methods 0.000 description 6
- 238000000137 annealing Methods 0.000 description 5
- MROCJMGDEKINLD-UHFFFAOYSA-N dichlorosilane Chemical compound Cl[SiH2]Cl MROCJMGDEKINLD-UHFFFAOYSA-N 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000002131 composite material Substances 0.000 description 3
- 239000010409 thin film Substances 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 2
- 229910004298 SiO 2 Inorganic materials 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000000280 densification Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 238000009279 wet oxidation reaction Methods 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 238000002048 anodisation reaction Methods 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000004518 low pressure chemical vapour deposition Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000007517 polishing process Methods 0.000 description 1
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 1
- 229920005591 polysilicon Polymers 0.000 description 1
- 230000001698 pyrogenic effect Effects 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 238000012876 topography Methods 0.000 description 1
- 238000003949 trap density measurement 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
-
- 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
-
- 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
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Element Separation (AREA)
Abstract
Description
Claims (14)
- 집적 회로의 실리콘층 내에 매립된 분리 부재(members)를 형성하기 위한 방법에 있어서,① 실리콘층의 노출된 표면 상에 적어도 하나의 질화물층을 포함하는 보호층을 침착시키는 단계와,② 상기 보호층을 통해 적어도 하나의 분리 마스크 개구부(aperture)를 형성하기 위해 에칭하는 단계와,③ 상기 적어도 하나의 분리 마스크 개구부를 통해 적어도 하나의 분리 트렌치를 형성하기 위해 에칭하는 단계와,④ 상기 적어도 하나의 분리 트렌치 내와 상기 보호 질화물층 상에 부합층(conformal layer) ― 상기 부합층은 산질화물층, 산화물과 질화물의 이중층 및, 산질화물과 질화물의 이중층으로 이루어진 그룹으로부터 선택됨 ― 을 형성하는 단계와,⑤ 상기 적어도 하나의 분리 트렌치를 충진하기에 충분한 두께를 갖는 산화물 충진재의 CVD층을 상기 부합층 위에 침착시키는 단계와,⑥ 상기 보호 질화물층과 상기 보호 질화물층 상에 있는 상기 부합층의 부분을 제거하는 단계를 포함하는 집적 회로의 실리콘층 내에 매립된 분리 부재의 형성 방법.
- 제 1 항에 있어서,상기 부합층을 형성하는 단계는 산질화물의 부합층을 침착시키는 단계를 포함하는 집적 회로의 실리콘층 내에 매립된 분리 부재의 형성 방법.
- 제 2 항에 있어서,상기 부합층은 5 내지 15 nm의 두께를 가지는 집적 회로의 실리콘층 내에 매립된 분리 부재의 형성 방법.
- 제 1 항에 있어서,상기 부합층을 형성하는 단계는,① 상기 적어도 하나의 분리 트렌치 내와 상기 보호 질화물층 상에 질화물의 부합층을 침착시키는 단계와,② 이중의 산질화물/질화물층을 형성하기 위하여 상기 질화물층의 적어도 일부분을 산질화물로 산화시키는 단계를 포함하는 집적 회로의 실리콘층 내에 매립된 분리 부재의 형성 방법.
- 제 4 항에 있어서,상기 부합층은 5 내지 10 nm의 두께를 가지는 집적 회로의 실리콘층 내에 매립된 분리 부재의 형성 방법.
- 제 1 항에 있어서,상기 부합층을 형성하는 단계는,① 상기 적어도 하나의 분리 트렌치 내와 상기 보호 질화물층 상에 질화물의 부합층을 침착시키는 단계와,② 이중의 산화물/질화물층을 형성하기 위해 상기 질화물층의 적어도 일부분을 산화물로 산화시키는 단계를 포함하는 집적 회로의 실리콘층 내에 매립된 분리 부재의 형성 방법.
- 제 1 항에 있어서,상기 부합층은 5 내지 10 nm의 두께를 가지는 집적 회로의 실리콘층 내에 매립된 분리 부재의 형성 방법.
- 제 1 항에 있어서,상기 트렌치를 충진하는 단계는 TEOS의 오존 지원 침착(ozone-assisted deposition)을 포함하는 집적 회로의 실리콘층 내에 매립된 분리 부재의 형성 방법.
- 제 1 항에 있어서,상기 부합층을 침착시키는 단계는 열 산화물층을 성장시키는 단계에 앞서서 실행되는 집적 회로의 실리콘층 내에 매립된 분리 부재의 형성 방법.
- 집적 회로의 실리콘층 내에 매립된 분리 부재에 있어서,① 기판 상에 적어도 하나의 분리 트렌치를 구비하는 실리콘층과,② 상기 적어도 하나의 분리 트렌치 내의 부합층 ― 상기 부합층은 산질화물층, 산질화물과 질화물의 이중층 및, 산화물과 질화물의 이중층으로 이루어진 그룹으로부터 선택됨 ― 과,③ 상기 부합층 위에 있으며, 상기 적어도 하나의 분리 트렌치를 충진하기에 충분한 두께를 가지는 산화물 충진재를 포함하는 집적 회로의 실리콘층 내에 매립된 분리 부재.
- 제 10 항에 있어서,상기 부합층은 산질화물로 구성되고 5 내지 15 nm의 두께를 가지는 집적 회로의 실리콘층 내에 매립된 분리 부재.
- 제 10 항에 있어서,상기 부합층은 제 1 질화물층 및 이에 후속하는 제 2 산화물층으로 구성되고 5 내지 10 nm의 두께를 가지는 집적 회로의 실리콘층 내에 매립된 분리 부재.
- 제 10 항에 있어서,상기 부합층은 제 1 질화물층 및 이에 후속하는 제 2 산질화물층으로 구성되고 5 내지 10 nm의 두께를 가지는 집적 회로의 실리콘층 내에 매립된 분리 부재.
- 제 10 항에 있어서,상기 부합층과 상기 트렌치 사이에 열 산화물층을 더 포함하는 집적 회로의 실리콘층 내에 매립된 분리 부재.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/790,266 US5763315A (en) | 1997-01-28 | 1997-01-28 | Shallow trench isolation with oxide-nitride/oxynitride liner |
US8/790,266 | 1997-01-28 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR19980069990A KR19980069990A (ko) | 1998-10-26 |
KR100258653B1 true KR100258653B1 (ko) | 2000-06-15 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019970050709A KR100258653B1 (ko) | 1997-01-28 | 1997-09-30 | 집적 회로의 실리콘층 내에 매립된 분리 부재 및 그의 형성 방법 |
Country Status (3)
Country | Link |
---|---|
US (2) | US5763315A (ko) |
JP (1) | JP3382143B2 (ko) |
KR (1) | KR100258653B1 (ko) |
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- 1997-09-30 KR KR1019970050709A patent/KR100258653B1/ko not_active IP Right Cessation
- 1997-12-12 US US08/989,303 patent/US6046487A/en not_active Expired - Lifetime
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US6046487A (en) | 2000-04-04 |
JPH10214886A (ja) | 1998-08-11 |
KR19980069990A (ko) | 1998-10-26 |
JP3382143B2 (ja) | 2003-03-04 |
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