JP6050944B2 - プラズマエッチング方法及びプラズマ処理装置 - Google Patents
プラズマエッチング方法及びプラズマ処理装置 Download PDFInfo
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- 238000012545 processing Methods 0.000 title claims description 104
- 238000000034 method Methods 0.000 title claims description 53
- 238000001020 plasma etching Methods 0.000 title claims description 26
- 238000005530 etching Methods 0.000 claims description 81
- 230000008569 process Effects 0.000 claims description 36
- 150000001875 compounds Chemical class 0.000 claims description 28
- 229910003902 SiCl 4 Inorganic materials 0.000 claims description 20
- 238000000576 coating method Methods 0.000 claims description 20
- 229910004014 SiF4 Inorganic materials 0.000 claims description 18
- ABTOQLMXBSRXSM-UHFFFAOYSA-N silicon tetrafluoride Chemical compound F[Si](F)(F)F ABTOQLMXBSRXSM-UHFFFAOYSA-N 0.000 claims description 18
- 239000011248 coating agent Substances 0.000 claims description 13
- 229910003910 SiCl4 Inorganic materials 0.000 claims description 12
- FDNAPBUWERUEDA-UHFFFAOYSA-N silicon tetrachloride Chemical compound Cl[Si](Cl)(Cl)Cl FDNAPBUWERUEDA-UHFFFAOYSA-N 0.000 claims description 12
- 238000000151 deposition Methods 0.000 claims description 11
- 239000000758 substrate Substances 0.000 claims description 11
- 229910052710 silicon Inorganic materials 0.000 claims description 8
- RWRIWBAIICGTTQ-UHFFFAOYSA-N difluoromethane Chemical compound FCF RWRIWBAIICGTTQ-UHFFFAOYSA-N 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 239000007789 gas Substances 0.000 description 128
- 239000010408 film Substances 0.000 description 78
- 238000012790 confirmation Methods 0.000 description 28
- 238000012360 testing method Methods 0.000 description 17
- 238000009792 diffusion process Methods 0.000 description 9
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 6
- 230000006872 improvement Effects 0.000 description 6
- 239000010703 silicon Substances 0.000 description 6
- 150000002500 ions Chemical class 0.000 description 5
- 230000007246 mechanism Effects 0.000 description 5
- 239000002826 coolant Substances 0.000 description 4
- 230000003247 decreasing effect Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000004065 semiconductor Substances 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 229910052581 Si3N4 Inorganic materials 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 238000012937 correction Methods 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 238000011835 investigation Methods 0.000 description 2
- 238000000206 photolithography Methods 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001900 extreme ultraviolet lithography Methods 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052756 noble gas Inorganic materials 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229920002120 photoresistant polymer Polymers 0.000 description 1
- 238000009832 plasma treatment Methods 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 238000005507 spraying 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
- H01L21/302—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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
- H01J37/32—Gas-filled discharge tubes
- H01J37/32431—Constructional details of the reactor
- H01J37/3266—Magnetic control means
- H01J37/32669—Particular magnets or magnet arrangements for controlling the discharge
-
- 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
- H01L21/31127—Etching organic layers
- H01L21/31133—Etching organic layers by chemical means
- H01L21/31138—Etching organic layers by chemical means by dry-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
- H01L21/31—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
- H01L21/31144—Etching the insulating layers by chemical or physical means using masks
-
- 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
- H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
- H01L21/67005—Apparatus not specifically provided for elsewhere
- H01L21/67011—Apparatus for manufacture or treatment
- H01L21/67017—Apparatus for fluid treatment
- H01L21/67063—Apparatus for fluid treatment for etching
- H01L21/67069—Apparatus for fluid treatment for etching for drying etching
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2237/00—Discharge tubes exposing object to beam, e.g. for analysis treatment, etching, imaging
- H01J2237/32—Processing objects by plasma generation
- H01J2237/33—Processing objects by plasma generation characterised by the type of processing
- H01J2237/334—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
- H01L21/027—Making masks on semiconductor bodies for further photolithographic processing not provided for in group H01L21/18 or H01L21/34
- H01L21/0271—Making masks on semiconductor bodies for further photolithographic processing not provided for in group H01L21/18 or H01L21/34 comprising organic layers
- H01L21/0273—Making masks on semiconductor bodies for further photolithographic processing not provided for in group H01L21/18 or H01L21/34 comprising organic layers characterised by the treatment of photoresist layers
- H01L21/0274—Photolithographic processes
- H01L21/0276—Photolithographic processes using an anti-reflective coating
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- General Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Plasma & Fusion (AREA)
- Analytical Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Drying Of Semiconductors (AREA)
Description
2 マイクロ波供給部
10 ウェハチャック
11 処理容器
12 接地線
13 サセプタ
14 絶縁板
15 支持台
20 補正リング
21 円筒部材
22 伝熱ガス管
30 第1の高周波電源
31 第1の整合器
40 第2の高周波電源
41 第2の整合器
42 上部電極
50 支持部材
51 電極板
52 電極支持板
53 ガス供給口
54 ガス拡散室
55 ガス孔
72a 希ガス供給部
72b コーティングガス供給部
72c エッチングガス供給部
73a、73b、73c バルブ
74a、74b、74c 流量調整機構
80 排流路
90 排気口
91 排気室
92 排気管
93 排気装置
100 リング磁石
150 制御部
W ウェハ
R レジストパターン
H 残膜厚さ
D Si含有化合物
M エッチングマスク
Claims (11)
- 基板上に形成された有機膜上に積層された反射防止膜を、当該反射防止膜上に形成されたレジスト膜からなるエッチングマスクを用いて処理容器内でプラズマエッチング処理する方法であって、
前記処理容器内にSi含有ガスのプラズマにより前記レジスト膜のエッチングマスク上にSi含有物からなる化合物を、前記エッチングマスクの側面よりも上面のほうが厚くなるように堆積させ、
その後、前記レジスト膜上に前記Si含有化合物を堆積させた状態で、前記反射防止膜のエッチング処理を行い、
前記Si含有ガスは、SiCl4ガス及びO2であり、SiCl4ガス流量:O2ガス流量の流量比が1:4〜10である混合ガスであることを特徴とする、反射防止膜のプラズマエッチング方法。 - 基板上に形成された有機膜上に積層された反射防止膜を、当該反射防止膜上に形成されたレジスト膜からなるエッチングマスクを用いて処理容器内でプラズマエッチング処理する方法であって、
前記処理容器内にSi含有ガスのプラズマにより前記レジスト膜のエッチングマスク上にSi含有物からなる化合物を、前記エッチングマスクの側面よりも上面のほうが厚くなるように堆積させ、
その後、前記レジスト膜上に前記Si含有化合物を堆積させた状態で、前記反射防止膜のエッチング処理を行い、
前記Si含有ガスは、SiF4ガス及びH2ガスであり、SiF4ガス流量:H2ガス流量の流量比が1:1〜4である混合ガスであることを特徴とする、反射防止膜のプラズマエッチング方法。 - 前記レジスト膜はEUVレジスト膜であることを特徴とする、請求項1又は2のいずれかに記載の反射防止膜のプラズマエッチング方法。
- 前記EUVレジスト膜の膜厚は20nm〜50nmであることを特徴とする、請求項3に記載の反射防止膜のプラズマエッチング方法。
- 前記SiCl4/O2の混合ガスには、Heが添加されていることを特徴とする、請求項1に記載の反射防止膜のプラズマエッチング方法。
- 前記SiF4/H2の混合ガスには、Heが添加されていることを特徴とする、請求項2に記載の反射防止膜のプラズマエッチング方法。
- 前記反射防止膜は、Si含有有機膜であることを特徴とする、請求項1〜6のいずれかに記載の反射防止膜のプラズマエッチング方法。
- 前記反射防止膜のエッチングは、CF4ガスのプラズマにより行われることを特徴とする、請求項1〜7のいずれかに記載の反射防止膜のプラズマエッチング方法。
- 前記CF4ガスは、CF4/CH2F2ガスのプラズマにより行われることを特徴とする、請求項8に記載の反射防止膜のプラズマエッチング方法。
- 基板上に形成された有機膜上に積層された反射防止膜をプラズマエッチングするプラズマ処理装置であって、
前記基板を収容する処理容器と、
前記処理容器内に設けられた上部電極と下部電極に高周波電力を印加する高周波電源と、
前記処理容器内に処理ガスを供給する処理ガス供給源を有し、
前記処理ガス供給源は、前記反射防止膜上に形成された、EUVレジスト膜によるエッチングマスク上にSi含有化合物を、前記エッチングマスクの側面よりも上面のほうが厚くなるように堆積させるためのSi含有ガスを供給するコーティングガス供給部と、Si含有化合物を堆積させた後のエッチングマスクをエッチング処理するためのエッチングガスを供給するエッチングガス供給部と、を備え、
前記Si含有ガスは、SiCl4ガス及びO2であり、SiCl4ガス流量:O2ガス流量の流量比が1:4〜10である混合ガスであることを特徴とする、プラズマ処理装置。 - 基板上に形成された有機膜上に積層された反射防止膜をプラズマエッチングするプラズマ処理装置であって、
前記基板を収容する処理容器と、
前記処理容器内に設けられた上部電極と下部電極に高周波電力を印加する高周波電源と、
前記処理容器内に処理ガスを供給する処理ガス供給源を有し、
前記処理ガス供給源は、前記反射防止膜上に形成された、EUVレジスト膜によるエッチングマスク上にSi含有化合物を、前記エッチングマスクの側面よりも上面のほうが厚くなるように堆積させるためのSi含有ガスを供給するコーティングガス供給部と、Si含有化合物を堆積させた後のエッチングマスクをエッチング処理するためのエッチングガスを供給するエッチングガス供給部と、を備え、
前記Si含有ガスは、SiF4ガス及びH2ガスであり、SiF4ガス流量:H2ガス流量の流量比が1:1〜4である混合ガスであることを特徴とする、プラズマ処理装置。
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JP2012086179A JP6050944B2 (ja) | 2012-04-05 | 2012-04-05 | プラズマエッチング方法及びプラズマ処理装置 |
US13/854,412 US9147580B2 (en) | 2012-04-05 | 2013-04-01 | Plasma etching method and plasma processing apparatus |
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JP6559430B2 (ja) * | 2015-01-30 | 2019-08-14 | 東京エレクトロン株式会社 | 被処理体を処理する方法 |
KR102508025B1 (ko) | 2015-05-11 | 2023-03-10 | 주성엔지니어링(주) | 공정챔버 내부에 배치되는 기판 처리장치 및 그 작동방법 |
CN108206153B (zh) * | 2016-12-16 | 2021-02-09 | 台湾积体电路制造股份有限公司 | 晶圆承载装置以及半导体设备 |
JP6832171B2 (ja) * | 2017-01-24 | 2021-02-24 | 東京エレクトロン株式会社 | プラズマ処理装置のチャンバ本体の内部のクリーニングを含むプラズマ処理方法 |
JP6861535B2 (ja) | 2017-02-28 | 2021-04-21 | 東京エレクトロン株式会社 | 処理方法及びプラズマ処理装置 |
US10886136B2 (en) * | 2019-01-31 | 2021-01-05 | Tokyo Electron Limited | Method for processing substrates |
SG11202109117UA (en) * | 2019-02-21 | 2021-09-29 | Lam Res Corp | Macroscopic texturing for anodized and coated surfaces |
US11537049B2 (en) * | 2019-02-26 | 2022-12-27 | Tokyo Electron Limited | Method of line roughness improvement by plasma selective deposition |
CN113675063B (zh) * | 2020-05-15 | 2024-03-12 | 中微半导体设备(上海)股份有限公司 | 一种等离子体处理装置及其导磁组件与方法 |
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US7473377B2 (en) * | 2002-06-27 | 2009-01-06 | Tokyo Electron Limited | Plasma processing method |
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US7977390B2 (en) * | 2002-10-11 | 2011-07-12 | Lam Research Corporation | Method for plasma etching performance enhancement |
US7141505B2 (en) | 2003-06-27 | 2006-11-28 | Lam Research Corporation | Method for bilayer resist plasma etch |
US7361607B2 (en) * | 2003-06-27 | 2008-04-22 | Lam Research Corporation | Method for multi-layer resist plasma etch |
US7250371B2 (en) * | 2003-08-26 | 2007-07-31 | Lam Research Corporation | Reduction of feature critical dimensions |
KR100636938B1 (ko) * | 2003-09-29 | 2006-10-19 | 주식회사 하이닉스반도체 | 포토레지스트 조성물 |
JP2007123766A (ja) * | 2005-10-31 | 2007-05-17 | Tokyo Electron Ltd | エッチング方法、プラズマ処理装置及び記憶媒体 |
JP2010041028A (ja) * | 2008-07-11 | 2010-02-18 | Tokyo Electron Ltd | 基板処理方法 |
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US20130267094A1 (en) | 2013-10-10 |
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