KR20000076337A - 개선된 전도층 엣칭방법 및 장치 - Google Patents
개선된 전도층 엣칭방법 및 장치 Download PDFInfo
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- KR20000076337A KR20000076337A KR1019997008438A KR19997008438A KR20000076337A KR 20000076337 A KR20000076337 A KR 20000076337A KR 1019997008438 A KR1019997008438 A KR 1019997008438A KR 19997008438 A KR19997008438 A KR 19997008438A KR 20000076337 A KR20000076337 A KR 20000076337A
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- etching
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- path
- conductive layer
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- 238000005530 etching Methods 0.000 title claims abstract description 172
- 238000000034 method Methods 0.000 title claims abstract description 56
- 239000000758 substrate Substances 0.000 claims abstract description 39
- 238000012545 processing Methods 0.000 claims abstract description 17
- 239000004065 semiconductor Substances 0.000 claims abstract description 14
- 230000004888 barrier function Effects 0.000 claims description 38
- 238000009616 inductively coupled plasma Methods 0.000 claims description 29
- 239000000460 chlorine Substances 0.000 claims description 22
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims description 11
- 229910052731 fluorine Inorganic materials 0.000 claims description 11
- 239000011737 fluorine Substances 0.000 claims description 11
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims description 9
- 229910052801 chlorine Inorganic materials 0.000 claims description 9
- 230000015572 biosynthetic process Effects 0.000 claims description 7
- 229910052721 tungsten Inorganic materials 0.000 claims description 7
- 239000010936 titanium Substances 0.000 claims description 4
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 4
- 239000010937 tungsten Substances 0.000 claims description 4
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims 1
- 229910052719 titanium Inorganic materials 0.000 claims 1
- 239000010410 layer Substances 0.000 description 166
- 239000000463 material Substances 0.000 description 41
- 239000007789 gas Substances 0.000 description 29
- 229920002120 photoresistant polymer Polymers 0.000 description 23
- 239000012790 adhesive layer Substances 0.000 description 21
- 235000012431 wafers Nutrition 0.000 description 20
- 239000001307 helium Substances 0.000 description 15
- 229910052734 helium Inorganic materials 0.000 description 15
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 15
- 230000008569 process Effects 0.000 description 15
- 238000001816 cooling Methods 0.000 description 12
- 229910052782 aluminium Inorganic materials 0.000 description 11
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 11
- 230000001965 increasing effect Effects 0.000 description 10
- 238000001020 plasma etching Methods 0.000 description 10
- 238000000710 polymer precipitation Methods 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 8
- 230000002708 enhancing effect Effects 0.000 description 7
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 5
- 239000006117 anti-reflective coating Substances 0.000 description 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 4
- 229920000642 polymer Polymers 0.000 description 4
- 230000006641 stabilisation Effects 0.000 description 4
- 238000011105 stabilization Methods 0.000 description 4
- 238000012546 transfer Methods 0.000 description 4
- 229910000838 Al alloy Inorganic materials 0.000 description 3
- 239000004020 conductor Substances 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000000059 patterning Methods 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910018594 Si-Cu Inorganic materials 0.000 description 2
- 229910008465 Si—Cu Inorganic materials 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000005229 chemical vapour deposition Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000001312 dry etching Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- 230000001939 inductive effect Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000001465 metallisation Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 238000005240 physical vapour deposition Methods 0.000 description 2
- 238000000623 plasma-assisted chemical vapour deposition Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000005389 semiconductor device fabrication Methods 0.000 description 2
- 238000004544 sputter deposition Methods 0.000 description 2
- 229910018125 Al-Si Inorganic materials 0.000 description 1
- 229910018182 Al—Cu Inorganic materials 0.000 description 1
- 229910018520 Al—Si Inorganic materials 0.000 description 1
- BSYNRYMUTXBXSQ-UHFFFAOYSA-N Aspirin Chemical compound CC(=O)OC1=CC=CC=C1C(O)=O BSYNRYMUTXBXSQ-UHFFFAOYSA-N 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 229910017758 Cu-Si Inorganic materials 0.000 description 1
- 229910017931 Cu—Si Inorganic materials 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000013626 chemical specie Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 239000000112 cooling gas Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000009795 derivation Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000001459 lithography Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000037361 pathway Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
- 238000001039 wet etching Methods 0.000 description 1
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
- H01L21/02—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
- H01L21/3205—Deposition of non-insulating-, e.g. conductive- or resistive-, layers on insulating layers; After-treatment of these layers
- H01L21/321—After treatment
- H01L21/3213—Physical or chemical etching of the layers, e.g. to produce a patterned layer from a pre-deposited extensive layer
- H01L21/32133—Physical or chemical etching of the layers, e.g. to produce a patterned layer from a pre-deposited extensive layer by chemical means only
- H01L21/32135—Physical or chemical etching of the layers, e.g. to produce a patterned layer from a pre-deposited extensive layer by chemical means only by vapour etching only
- H01L21/32136—Physical or chemical etching of the layers, e.g. to produce a patterned layer from a pre-deposited extensive layer by chemical means only by vapour etching only using plasmas
-
- 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
- H01L21/768—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics
- H01L21/76838—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics characterised by the formation and the after-treatment of the conductors
- H01L21/76885—By forming conductive members before deposition of protective insulating material, e.g. pillars, studs
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Plasma & Fusion (AREA)
- Internal Circuitry In Semiconductor Integrated Circuit Devices (AREA)
- Drying Of Semiconductors (AREA)
- Manufacturing Of Printed Circuit Boards (AREA)
Abstract
Description
Claims (25)
- 제 1 엣칭 조건을 사용하여 전도층을 적어도 부분적으로 엣칭시켜 전도성 부위의 상부를 형성하고;상기 제 1 엣칭 조건과 다른 제 2 엣칭 조건을 사용하여 상기 전도층의 나머지 두께를 적어도 부분적으로 엣칭시켜 상기 전도성 부위의 하부를 형성하고, 상기 하부는 상기 상부 아래에 배치되고 상기 제 2 엣칭 조건은 상기 전도성 부위의 상기 하부에 경사진 엣칭 푸트를 생성시키도록 구성되는 단계를 포함하는 반도체 기판위에 배치된 전도층을 엣칭시킴으로써 기판 처리 챔버에서 전도성 부위를 형성하는 방법.
- 제 1 항에 있어서, 상기 제 1 엣칭 조건은 상기 제 2 엣칭 조건에 의해 달성된 엣칭 속도보다 큰 엣칭속도로 상기 전도층을 엣칭하도록 구성됨을 특징으로 하는 방법.
- 제 2 항에 있어서, 상기 제 1 엣칭 조건은 상기 전도층 엣칭속도를 최대화하도록 구성됨을 특징으로 하는 방법.
- 제 1 항에 있어서, 상기 기판 처리 챔버가 플라즈마 처리 챔버임을 특징으로 하는 방법.
- 제 4 항에 있어서, 상기 플라즈마 처리 챔버가 변압기 결합 플라즈마 엣칭 챔버임을 특징으로 하는 방법.
- 제 5 항에 있어서, 상기 전도성 부위가 염소 화학을 사용하여 엣칭됨을 특징으로 하는 방법.
- 제 5 항에 있어서, 상기 전도성 부위가 불소 화학을 사용하여 엣칭됨을 특징으로 하는 방법.
- 제 5 항에 있어서, 상기 변압기 결합 플라즈마 엣칭 챔버가 상기 기판 아래에 배치된 하부 전극을 포함하며, 상기 전도성 부위의 하부 엣칭동안 상기 하부 전극의 DC 바이어스는 상기 전도성 부위의 상부 형성동안 상기 하부 전극의 DC 바이어스 보다 큼을 특징으로 하는 방법.
- 제 1 항에 있어서, 상기 전도성 부위의 상부 형성동안 기판의 온도보다 낮게 상기 전도성 부위의 하부 엣칭동안 기판의 온도가 유지됨을 특징으로 하는 방법.
- 제 1 항에 있어서, 상기 전도성 부위가 절연층에 형성된 경로 위에 배치되며, 상기 절연층은 상기 전도층 아래에 배치되고, 상기 전도성 부위의 상부는 상기 경로의 직경보다 작은 폭을 가지며, 상기 전도성 부위의 하부는 상기 전도성 부위의 하부와 상기 경로간의 경계에서 상기 경로의 직경 이상의 폭을 가짐을 특징으로 하는 방법.
- 제 1 항에 있어서, 상기 경로는 그속에 배치된 전도성 플러그를 포함하며 상기 전도성 플러그는 티타늄을 포함함을 특징으로 하는 방법.
- 제 11 항에 있어서, 상기 경로는 상기 전도성 플러그와 상기 경로의 내벽 사이에 배치된 층을 포함함을 특징으로 하는 방법.
- 제 12 항에 있어서, 상기 전도성 플러그는 상기 절연층 아래에 배치된 전도성 부위와 전기적 접촉을 함을 특징으로 하는 방법.
- 제 13 항에 있어서, 상기 반도체 기판이 집적회로 제조에 사용된 반도체 기판임을 특징으로 하는 방법.
- 반도체 기판위에 배치된 제 1 전도층으로 부터 엣칭된 제 1 전도성 부위;상기 전도성 부위 위에 배치되며 경로를 내부에 가지는 절연층;상기 경로에 배치되며 상기 제 1 전도성 부위에 전기적 연결되는 전도성 플러그; 및상기 경로위에 배치되며 상기 절연층 위에 배치된 제 2 전도층으로 부터 엣칭되며 상기 경로에 배치된 상기 전도성 플러그와 전기적 연결되며 제 1 엣칭 프로파일 및 제 1 폭을 갖는 상부와 상기 상부 아래에 배치되며 상기 제 1 엣칭 프로파일과 상이한 제 2 엣칭프로파일과 상기 제 1 폭보다 넓은 제 2 폭을 가지는 하부를 포함하는 제 2 전도성 부위를 포함하는 반도체 기판상에 형성된 성분을 갖는 집적회로.
- 제 15 항에 있어서, 상기 전도성 플러그가 텅스텐으로 구성됨을 특징으로 하는 집적회로.
- 제 1 항에 있어서, 상기 제 1 엣칭 프로파일이 상기 제 2 엣칭 프로파일보다 더욱 비등방성임을 특징으로 하는 집적회로.
- 제 15 항에 있어서, 상기 제 2 폭이 상기 경로의 직경보다 넓음을 특징으로 하는 집적회로.
- 제 18 항에 있어서, 상기 제 1 폭이 상기 경로의 직경보다 좁음을 특징으로 하는 집적회로.
- 제 18 항에 있어서, 상기 전도성 플러그와 상기 경로 내벽간에 층을 더욱 포함하는 집적회로.
- 제 1 엣칭 조건을 사용하여 위에 놓이는 전도층을 적어도 부분적으로 엣칭하여 제 1 폭을 갖는 상부를 형성하고;상기 제 1 엣칭 조건과 상이한 제 2 엣칭 조건을 사용하여 상기 전도층의 나머지 두께를 적어도 부분적으로 엣칭하여 상기 제 1 폭과 경로의 직경보다 큰 제 2 폭을 가지는 하부를 형성하는 단계를 포함하는 방법으로서,상기 위에 놓이는 전도층은 내부에 경로에 배치된 전도성 플러그를 갖는 절연층에 의해 아래에 놓이는 전도성 부위로 부터 분리되고 상기 전도성 플러그는 상기 위에 놓이는 전도성 부위와 상기 아래에 놓이는 전도층을 상기 절연층을 통해 연결시키는 플라즈마 처리 챔버에서 위에 놓이는 전도층으로 부터 전도성 부위를 형성하는 동안 아래에 놓인 전도성 부위의 손상을 방지하는 방법.
- 제 21 항에 있어서, 상기 제 1 엣칭 조건이 상기 제 2 엣칭 조건보다 빠른 속도로 엣칭하도록 구성됨을 특징으로 하는 방법.
- 제 21 항에 있어서, 상기 상부가 상기 하부보다 더욱 비등방성임을 특징으로 하는 방법.
- 제 21 항에 있어서, 상기 제 1 엣칭 조건 및 제 2 엣칭 조건과 상이한 제 3 엣칭조건을 사용하여 상기 전도층의 장벽층을 엣칭하는 단계를 더욱 포함하는 방법.
- 제 24 항에 있어서, 상기 위에 놓이는 전도층의 나머지 두께가 엣칭된 이후에 오버엣칭을 수행하는 단계를 더욱 포함하는 방법.
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US8/820,533 | 1997-03-19 | ||
US08/820,533 US5849641A (en) | 1997-03-19 | 1997-03-19 | Methods and apparatus for etching a conductive layer to improve yield |
US08/820,533 | 1997-03-19 | ||
PCT/US1998/005202 WO1998042020A1 (en) | 1997-03-19 | 1998-03-17 | Method for etching a conductive layer |
Publications (2)
Publication Number | Publication Date |
---|---|
KR20000076337A true KR20000076337A (ko) | 2000-12-26 |
KR100493486B1 KR100493486B1 (ko) | 2005-06-03 |
Family
ID=25231067
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR10-1999-7008438A KR100493486B1 (ko) | 1997-03-19 | 1998-03-17 | 개선된 전도층 엣칭방법 및 장치 |
Country Status (8)
Country | Link |
---|---|
US (1) | US5849641A (ko) |
EP (1) | EP1010203B1 (ko) |
JP (1) | JP4451934B2 (ko) |
KR (1) | KR100493486B1 (ko) |
AT (1) | ATE252275T1 (ko) |
DE (1) | DE69819023T2 (ko) |
TW (1) | TW468226B (ko) |
WO (1) | WO1998042020A1 (ko) |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100307986B1 (ko) * | 1997-08-28 | 2002-05-09 | 가네꼬 히사시 | 반도체장치의제조방법 |
KR100257080B1 (ko) * | 1997-09-26 | 2000-05-15 | 김영환 | 반도체소자의제조방법 |
US6077762A (en) * | 1997-12-22 | 2000-06-20 | Vlsi Technology, Inc. | Method and apparatus for rapidly discharging plasma etched interconnect structures |
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-
1997
- 1997-03-19 US US08/820,533 patent/US5849641A/en not_active Expired - Lifetime
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1998
- 1998-03-17 JP JP54071698A patent/JP4451934B2/ja not_active Expired - Lifetime
- 1998-03-17 AT AT98911722T patent/ATE252275T1/de not_active IP Right Cessation
- 1998-03-17 KR KR10-1999-7008438A patent/KR100493486B1/ko not_active IP Right Cessation
- 1998-03-17 DE DE69819023T patent/DE69819023T2/de not_active Expired - Fee Related
- 1998-03-17 WO PCT/US1998/005202 patent/WO1998042020A1/en active IP Right Grant
- 1998-03-17 EP EP98911722A patent/EP1010203B1/en not_active Expired - Lifetime
- 1998-03-19 TW TW087104088A patent/TW468226B/zh not_active IP Right Cessation
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DE69819023T2 (de) | 2004-04-22 |
JP2001517367A (ja) | 2001-10-02 |
JP4451934B2 (ja) | 2010-04-14 |
WO1998042020A1 (en) | 1998-09-24 |
TW468226B (en) | 2001-12-11 |
EP1010203B1 (en) | 2003-10-15 |
DE69819023D1 (de) | 2003-11-20 |
ATE252275T1 (de) | 2003-11-15 |
KR100493486B1 (ko) | 2005-06-03 |
EP1010203A1 (en) | 2000-06-21 |
US5849641A (en) | 1998-12-15 |
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