KR20010064420A - 반도체장치의 소자분리막 형성방법 - Google Patents
반도체장치의 소자분리막 형성방법 Download PDFInfo
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- KR20010064420A KR20010064420A KR1019990064616A KR19990064616A KR20010064420A KR 20010064420 A KR20010064420 A KR 20010064420A KR 1019990064616 A KR1019990064616 A KR 1019990064616A KR 19990064616 A KR19990064616 A KR 19990064616A KR 20010064420 A KR20010064420 A KR 20010064420A
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- South Korea
- Prior art keywords
- film
- substrate
- pad
- device isolation
- trench
- Prior art date
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- 238000000034 method Methods 0.000 title claims abstract description 50
- 238000002955 isolation Methods 0.000 title claims abstract description 44
- 239000004065 semiconductor Substances 0.000 title claims abstract description 19
- 239000000758 substrate Substances 0.000 claims abstract description 48
- 229910021420 polycrystalline silicon Inorganic materials 0.000 claims abstract description 37
- 229920005591 polysilicon Polymers 0.000 claims abstract description 37
- 238000005530 etching Methods 0.000 claims abstract description 25
- 238000005498 polishing Methods 0.000 claims abstract description 7
- 238000011049 filling Methods 0.000 claims abstract description 3
- 238000000206 photolithography Methods 0.000 claims abstract description 3
- 230000003647 oxidation Effects 0.000 claims description 8
- 238000007254 oxidation reaction Methods 0.000 claims description 8
- 238000000151 deposition Methods 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 6
- 238000005229 chemical vapour deposition Methods 0.000 claims description 5
- 238000000926 separation method Methods 0.000 claims 1
- 239000000126 substance Substances 0.000 abstract description 8
- 229910004298 SiO 2 Inorganic materials 0.000 abstract description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract description 5
- 229910052814 silicon oxide Inorganic materials 0.000 abstract description 5
- 238000001039 wet etching Methods 0.000 abstract description 5
- 238000007517 polishing process Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 description 13
- 238000005516 engineering process Methods 0.000 description 12
- 230000007547 defect Effects 0.000 description 7
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 4
- 150000004767 nitrides Chemical class 0.000 description 4
- 229920002120 photoresistant polymer Polymers 0.000 description 4
- 229910052710 silicon Inorganic materials 0.000 description 4
- 239000010703 silicon Substances 0.000 description 4
- 239000007789 gas Substances 0.000 description 3
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 description 2
- 229910021417 amorphous silicon Inorganic materials 0.000 description 2
- 238000000137 annealing Methods 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 229910021419 crystalline silicon Inorganic materials 0.000 description 2
- 241000293849 Cordylanthus Species 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- 238000003486 chemical etching Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000005137 deposition process Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000012495 reaction gas Substances 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
Classifications
-
- 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
-
- 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
- H01L21/02104—Forming layers
- H01L21/02107—Forming insulating materials on a substrate
- H01L21/02109—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates
- H01L21/02112—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates characterised by the material of the layer
- H01L21/02172—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates characterised by the material of the layer the material containing at least one metal element, e.g. metal oxides, metal nitrides, metal oxynitrides or metal carbides
- H01L21/02175—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates characterised by the material of the layer the material containing at least one metal element, e.g. metal oxides, metal nitrides, metal oxynitrides or metal carbides characterised by the metal
- H01L21/02183—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates characterised by the material of the layer the material containing at least one metal element, e.g. metal oxides, metal nitrides, metal oxynitrides or metal carbides characterised by the metal the material containing tantalum, e.g. Ta2O5
-
- 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
- H01L21/31—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to form insulating layers thereon, e.g. for masking or by using photolithographic techniques; After treatment of these layers; Selection of materials for these layers
- H01L21/3105—After-treatment
- H01L21/311—Etching the insulating layers by chemical or physical means
- H01L21/31105—Etching inorganic layers
- H01L21/31111—Etching inorganic layers by chemical means
-
- 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
- H01L21/02104—Forming layers
- H01L21/02107—Forming insulating materials on a substrate
- H01L21/02225—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer
- H01L21/0226—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer formation by a deposition process
- H01L21/02263—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer formation by a deposition process deposition from the gas or vapour phase
- H01L21/02271—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer formation by a deposition process deposition from the gas or vapour phase deposition by decomposition or reaction of gaseous or vapour phase compounds, i.e. chemical vapour deposition
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
- Physics & Mathematics (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Element Separation (AREA)
Abstract
Description
식각액 | 열산화막(Å/sec) | Ta2O5막(Å/sec) |
DI : HF = 5:1 | 10 | 0.125 |
DI : HF = 50: 1 | 1 | 0.0125 |
Claims (6)
- 반도체기판에 소자의 활성 영역 및 분리 영역을 정의하기 위한 트렌치 구조의 소자분리막을 형성함에 있어서,반도체기판 상부에 순차적으로 패드 Ta2O5막과 폴리실리콘막을 순차 적층한 후에 소자분리 마스크를 이용한 사진 및 식각 공정을 진행하여 상기 적층된 폴리실리콘막과 패드 Ta2O5막을 패터닝해서, 이후 소자분리 영역이 될 기판 부위를 개방하는 단계;상기 패터닝된 폴리실리콘막과 패드 Ta2O5막에 의해 드러난 기판을 소정 깊이로 식각하여 트렌치를 형성하는 단계;산화 공정을 진행하여 상기 트렌치가 형성된 기판에 희생 산화막을 형성한 후에 이를 제거하는 단계;상기 트렌치가 형성된 결과물에 라이너 산화막을 형성하는 단계;상기 트렌치 내부에 갭필 산화막을 채워넣고 이를 화학적기계적연마하는 단계; 및상기 패드 Ta2O5막과 폴리실리콘막 패턴을 제거하여 기판에 산화막으로 이루어진 소자분리막을 형성하는 단계를 포함하여 이루어진 것을 특징으로 하는 반도체장치의 소자분리막 형성방법.
- 제 1항에 있어서, 상기 패드 Ta2O5막의 두께는 50∼200Å인 것을 특징으로 하는 반도체장치의 소자분리막 형성방법.
- 제 1항에 있어서, 상기 패드 Ta2O5막의 증착 공정은 화학기상증착법을 이용하고 Ta2O5막을 증착한 후에 고온 열처리 공정을 추가 실시하는 것을 특징으로 하는 반도체장치의 소자분리막 형성방법.
- 제 3항에 있어서, 상기 고온 열처리 공정은 800∼1050℃에서 10초∼100분간 O2또는 O3분위기에서 진행하는 것을 특징으로 하는 반도체장치의 소자분리막 형성방법.
- 제 4항에 있어서, 상기 고온 열처리 공정시 N2O 가스를 추가 공급하는 것을 특징으로 하는 반도체장치의 소자분리막 형성방법.
- 제 1항에 있어서, 상기 패드 Ta2O5막을 증착하기전에, 이후 Ta2O5막의 용이한 제거를 위해 상기 기판 상부에 산화막을 추가 형성하는 것을 특징으로 하는 반도체장치의 소자분리막 형성방법.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019990064616A KR100321174B1 (ko) | 1999-12-29 | 1999-12-29 | 반도체장치의 소자분리막 형성방법 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019990064616A KR100321174B1 (ko) | 1999-12-29 | 1999-12-29 | 반도체장치의 소자분리막 형성방법 |
Publications (2)
Publication Number | Publication Date |
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KR20010064420A true KR20010064420A (ko) | 2001-07-09 |
KR100321174B1 KR100321174B1 (ko) | 2002-03-18 |
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Application Number | Title | Priority Date | Filing Date |
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KR1019990064616A KR100321174B1 (ko) | 1999-12-29 | 1999-12-29 | 반도체장치의 소자분리막 형성방법 |
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KR (1) | KR100321174B1 (ko) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100480918B1 (ko) * | 2003-06-27 | 2005-04-07 | 주식회사 하이닉스반도체 | 반도체 소자의 소자분리막 형성방법 |
CN110931421A (zh) * | 2018-09-20 | 2020-03-27 | 长鑫存储技术有限公司 | 浅沟槽隔离结构及制作方法 |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100451319B1 (ko) * | 2002-03-20 | 2004-10-06 | 주식회사 하이닉스반도체 | 반도체소자의 소자분리막 제조방법 |
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1999
- 1999-12-29 KR KR1019990064616A patent/KR100321174B1/ko not_active IP Right Cessation
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100480918B1 (ko) * | 2003-06-27 | 2005-04-07 | 주식회사 하이닉스반도체 | 반도체 소자의 소자분리막 형성방법 |
CN110931421A (zh) * | 2018-09-20 | 2020-03-27 | 长鑫存储技术有限公司 | 浅沟槽隔离结构及制作方法 |
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Publication number | Publication date |
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KR100321174B1 (ko) | 2002-03-18 |
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