JP2001507171A - フォトレジストの選択性を改善し且つエッチング速度負荷を低減するための方法 - Google Patents
フォトレジストの選択性を改善し且つエッチング速度負荷を低減するための方法Info
- Publication number
- JP2001507171A JP2001507171A JP52897598A JP52897598A JP2001507171A JP 2001507171 A JP2001507171 A JP 2001507171A JP 52897598 A JP52897598 A JP 52897598A JP 52897598 A JP52897598 A JP 52897598A JP 2001507171 A JP2001507171 A JP 2001507171A
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- layer
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- etching
- stack
- chf
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 75
- 229920002120 photoresistant polymer Polymers 0.000 title claims description 52
- 238000005530 etching Methods 0.000 claims abstract description 105
- 238000001465 metallisation Methods 0.000 claims abstract description 55
- 238000012545 processing Methods 0.000 claims abstract description 30
- 230000003667 anti-reflective effect Effects 0.000 claims abstract description 27
- 238000003486 chemical etching Methods 0.000 claims abstract description 18
- 229920000642 polymer Polymers 0.000 claims abstract description 10
- 239000010410 layer Substances 0.000 claims description 201
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 37
- 239000000126 substance Substances 0.000 claims description 25
- 229910052751 metal Inorganic materials 0.000 claims description 24
- 239000002184 metal Substances 0.000 claims description 24
- 230000008569 process Effects 0.000 claims description 17
- 239000011247 coating layer Substances 0.000 claims description 16
- 230000004888 barrier function Effects 0.000 claims description 15
- 229910052782 aluminium Inorganic materials 0.000 claims description 14
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 14
- 239000004065 semiconductor Substances 0.000 claims description 14
- 239000000203 mixture Substances 0.000 claims description 13
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 9
- 229910052802 copper Inorganic materials 0.000 claims description 9
- 239000010949 copper Substances 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 239000000758 substrate Substances 0.000 claims description 4
- 238000000059 patterning Methods 0.000 claims description 3
- 229910052719 titanium Inorganic materials 0.000 claims description 3
- 239000002131 composite material Substances 0.000 abstract description 2
- 235000012431 wafers Nutrition 0.000 description 34
- 239000006117 anti-reflective coating Substances 0.000 description 19
- 239000000463 material Substances 0.000 description 13
- 238000001020 plasma etching Methods 0.000 description 10
- 239000007789 gas Substances 0.000 description 6
- 239000010936 titanium Substances 0.000 description 6
- 238000003475 lamination Methods 0.000 description 5
- XKRFYHLGVUSROY-UHFFFAOYSA-N argon Substances [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 4
- 230000007423 decrease Effects 0.000 description 4
- 238000000637 aluminium metallisation Methods 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 238000005229 chemical vapour deposition Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 238000000206 photolithography Methods 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical group [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 229910052786 argon Inorganic materials 0.000 description 2
- 238000001311 chemical methods and process Methods 0.000 description 2
- 239000000112 cooling gas Substances 0.000 description 2
- 238000001312 dry etching Methods 0.000 description 2
- 229910052734 helium Inorganic materials 0.000 description 2
- 239000001307 helium Substances 0.000 description 2
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 2
- 229910052743 krypton Inorganic materials 0.000 description 2
- DNNSSWSSYDEUBZ-UHFFFAOYSA-N krypton atom Chemical compound [Kr] DNNSSWSSYDEUBZ-UHFFFAOYSA-N 0.000 description 2
- 229910052756 noble gas Inorganic materials 0.000 description 2
- 150000002835 noble gases Chemical class 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 238000005240 physical vapour deposition Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 229910052724 xenon Inorganic materials 0.000 description 2
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 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
- 229910017758 Cu-Si Inorganic materials 0.000 description 1
- 229910017931 Cu—Si Inorganic materials 0.000 description 1
- -1 Lium Chemical class 0.000 description 1
- 241001676573 Minium Species 0.000 description 1
- 241000183024 Populus tremula Species 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 239000012790 adhesive layer Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000005137 deposition process Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 238000004544 sputter deposition 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
- H01L21/02—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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S438/00—Semiconductor device manufacturing: process
- Y10S438/942—Masking
- Y10S438/948—Radiation resist
- Y10S438/952—Utilizing antireflective layer
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Plasma & Fusion (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Internal Circuitry In Semiconductor Integrated Circuit Devices (AREA)
- Drying Of Semiconductors (AREA)
Abstract
Description
Claims (1)
- 【特許請求の範囲】 1.プラズマ加工室において、積層の層の選択された部分をエッチングするた めの方法であって、該積層は反射防止層と該反射防止層の下に堆積する金属被覆 層とを有し、 前記積層の前記反射防止層を少なくとも部分的に第一化学でエッチングし、該 第一化学は主にCl2とCHF3とArないしはBCl3のいずれか一つとから成 り、 前記第一化学と異なる第二化学で前記積層の前記金属被覆層を少なくとも部分 的にエッチングし、 もって、前記第一および第二化学がフォトレジストの選択性を改善する方法。 2.前記反射防止層がTiおよびTiNからなるグループから選択される請求 項1記載の方法。 3.前記第二化学がCl2、N2およびHClを有する請求項1記載の方法。 4.前記反射防止層がTiNからなり、前記第一化学を使用して前記反射防止 層をエッチングする請求項3記載の方法。 5.前記Cl2が約80sccmの流量を有し、前記Arの流量がCl2の約1 4パーセントであり、前記CHF3の流量がCl2の約30パーセントである請求 項1記載の方法。 6.前記Cl2が約85sccmの流量を有し、前記N2の流量がCl2の約3 0パーセントであり且つ前記HClの流量がCl2の約25パーセントである請 求項3記載の方法。 7.下の遮断層をエッチングするための第三化学をさらに有する請求項1記載 の方法。 8.前記第三化学が前記第一化学と実質上同じである請求項7記載の方法。 9.前記第三化学がCl2とCHF3とBCl3とを有する請求項7記載の方法 。 10.第一、第二および第三化学が基板を半導体装置へとエッチングするように 形成されている請求項10記載の方法。 11.集積回路であって、プラズマ加工室において形成され、該プラズマ加工室 は積層の層をエッチングするためのフォトレジスト選択性複合化学エッチング工 程を行い、該積層は金属被覆層上層、該金属被覆層上層の下に堆積する金属被覆 層、および前記積層上の低アスペクト比フォトレジスト層からなり、該低アスペ クト比フォトレジスト層は金属被覆層上層を露出している複数の第一領域および 前記金属被覆層上層を保護する複数の第二領域にパターン化され、 前記金属被覆層上層を実質上、下の前記金属被覆層まで第一化学でエッチングし 、前記金属被覆層上層は前記積層の前記金属被覆層上層を露出している前記複数 の第一領域にエッチングされ、前記第一化学はエッチング化学製品およびポリマ ー形成化学製品からなり、 さらに前記金属被覆層を第二化学で前記積層の前記金属被覆層を露出している前 記複数の第一領域にエッチングし、前記第二化学が前記第一化学と異なることか らなる工程ステップで形成される集積回路。 12.前記金属被覆−上層がTiN反射防止層である請求項11記載の集積回路 。 13.前記第一化学が主にCl2、ArおよびCHF3からなる請求項12記載の 集積回路。 14.前記金属被覆層がアルミニウムを有し、且つ前記第二化学が主にCl2、 N2およびHClからなる請求項12記載の集積回路。 15.前記第一化学を使用して前記反射防止層をエッチングする請求項12記載 の集積回路。 16.プラズマ加工室において、半導体装置を製造するための積層の層の選択さ れた部分に対してフォトレジスト選択性のエッチングを行うことを含む方法であ って、該積層はTiN層と、アルミニウムないしは銅の少なくとも一つから成る 金属被覆層とを有し、 前記積層の前記TiN層を少なくとも部分的に第一化学でエッチングし、該第 一化学は Cl2、ArおよびCHF3の第一混合物と、 Cl2、CHF3およびBCl3の第二混合物と、 Cl2、N2、およびCHF3の第三混合物とからなるグループから選択され、 さらに前記積層の前記金属被覆層を少なくとも部分的に第二化学でエッチング し、該第二化学は Cl2、N2およびHClの第四混合物と、 Cl2、CHF3およびBCl3の第五混合物とからなるグループから選択され る方法。 17.前記TiN層が反射防止層である請求項16記載の方法。 18.前記金属被覆層がアルミニウムおよび銅を有する請求項16記載の方法。 19.実質的に前記金属被覆層の下に位置している前記積層における遮断層を少 なくとも部分的にエッチングするための第三化学をさらに有する請求項16記載 の方法。 20.第一および第二化学が前記積層を半導体装置へとエッチングするように形 成されている請求項16記載の方法。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/770,336 US5883007A (en) | 1996-12-20 | 1996-12-20 | Methods and apparatuses for improving photoresist selectivity and reducing etch rate loading |
US08/770,336 | 1996-12-20 | ||
PCT/US1997/023505 WO1998028785A1 (en) | 1996-12-20 | 1997-12-19 | Methods for improving photoresist selectivity and reducing etch rate loading |
Publications (1)
Publication Number | Publication Date |
---|---|
JP2001507171A true JP2001507171A (ja) | 2001-05-29 |
Family
ID=25088213
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP52897598A Pending JP2001507171A (ja) | 1996-12-20 | 1997-12-19 | フォトレジストの選択性を改善し且つエッチング速度負荷を低減するための方法 |
Country Status (5)
Country | Link |
---|---|
US (1) | US5883007A (ja) |
JP (1) | JP2001507171A (ja) |
KR (1) | KR20000057674A (ja) |
TW (1) | TW535229B (ja) |
WO (1) | WO1998028785A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2007055309A1 (ja) * | 2005-11-11 | 2007-05-18 | Rohm Co., Ltd. | 半導体装置の製造方法 |
KR20180133221A (ko) * | 2017-06-05 | 2018-12-13 | 도쿄엘렉트론가부시키가이샤 | 에칭 방법 및 에칭 장치 |
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US6296780B1 (en) * | 1997-12-08 | 2001-10-02 | Applied Materials Inc. | System and method for etching organic anti-reflective coating from a substrate |
US6043163A (en) * | 1997-12-29 | 2000-03-28 | Taiwan Semiconductor Manufacturing Company, Ltd. | HCL in overetch with hard mask to improve metal line etching profile |
US6391786B1 (en) * | 1997-12-31 | 2002-05-21 | Lam Research Corporation | Etching process for organic anti-reflective coating |
US6177337B1 (en) * | 1998-01-06 | 2001-01-23 | International Business Machines Corporation | Method of reducing metal voids in semiconductor device interconnection |
US6548413B1 (en) * | 1998-03-26 | 2003-04-15 | Chartered Semiconductor Manufacturing Ltd. | Method to reduce microloading in metal etching |
US6399508B1 (en) * | 1999-01-12 | 2002-06-04 | Applied Materials, Inc. | Method for metal etch using a dielectric hard mask |
TW448503B (en) * | 1999-03-11 | 2001-08-01 | Toshiba Corp | Method for dry etching |
US6291361B1 (en) | 1999-03-24 | 2001-09-18 | Conexant Systems, Inc. | Method and apparatus for high-resolution in-situ plasma etching of inorganic and metal films |
JP2001035808A (ja) * | 1999-07-22 | 2001-02-09 | Semiconductor Energy Lab Co Ltd | 配線およびその作製方法、この配線を備えた半導体装置、ドライエッチング方法 |
US6472329B1 (en) * | 1999-08-16 | 2002-10-29 | Applied Komatsu Technology, Inc. | Etching aluminum over refractory metal with successive plasmas |
US6270634B1 (en) * | 1999-10-29 | 2001-08-07 | Applied Materials, Inc. | Method for plasma etching at a high etch rate |
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TW527441B (en) * | 2000-06-26 | 2003-04-11 | Matsushita Electric Ind Co Ltd | Dry etching method |
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TW582071B (en) | 2001-03-20 | 2004-04-01 | Macronix Int Co Ltd | Method for etching metal in a semiconductor |
JP2003045874A (ja) * | 2001-07-27 | 2003-02-14 | Semiconductor Energy Lab Co Ltd | 金属配線およびその作製方法、並びに金属配線基板およびその作製方法 |
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-
1996
- 1996-12-20 US US08/770,336 patent/US5883007A/en not_active Expired - Lifetime
-
1997
- 1997-12-17 TW TW086119113A patent/TW535229B/zh not_active IP Right Cessation
- 1997-12-19 KR KR1019990705511A patent/KR20000057674A/ko not_active Application Discontinuation
- 1997-12-19 JP JP52897598A patent/JP2001507171A/ja active Pending
- 1997-12-19 WO PCT/US1997/023505 patent/WO1998028785A1/en not_active Application Discontinuation
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007055309A1 (ja) * | 2005-11-11 | 2007-05-18 | Rohm Co., Ltd. | 半導体装置の製造方法 |
JP2007134589A (ja) * | 2005-11-11 | 2007-05-31 | Rohm Co Ltd | 半導体装置の製造方法 |
KR20180133221A (ko) * | 2017-06-05 | 2018-12-13 | 도쿄엘렉트론가부시키가이샤 | 에칭 방법 및 에칭 장치 |
KR102136458B1 (ko) * | 2017-06-05 | 2020-07-21 | 도쿄엘렉트론가부시키가이샤 | 에칭 방법 및 에칭 장치 |
Also Published As
Publication number | Publication date |
---|---|
WO1998028785A1 (en) | 1998-07-02 |
TW535229B (en) | 2003-06-01 |
US5883007A (en) | 1999-03-16 |
KR20000057674A (ko) | 2000-09-25 |
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