JP2015041624A - シリコン酸化膜をエッチングする方法 - Google Patents
シリコン酸化膜をエッチングする方法 Download PDFInfo
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- JP2015041624A JP2015041624A JP2013170218A JP2013170218A JP2015041624A JP 2015041624 A JP2015041624 A JP 2015041624A JP 2013170218 A JP2013170218 A JP 2013170218A JP 2013170218 A JP2013170218 A JP 2013170218A JP 2015041624 A JP2015041624 A JP 2015041624A
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- 238000005530 etching Methods 0.000 title claims abstract description 105
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 title claims abstract description 85
- 229910052814 silicon oxide Inorganic materials 0.000 title claims abstract description 84
- 238000000034 method Methods 0.000 title claims abstract description 47
- 238000012545 processing Methods 0.000 claims description 65
- 229910021420 polycrystalline silicon Inorganic materials 0.000 claims description 11
- 229920005591 polysilicon Polymers 0.000 claims description 11
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 7
- 229910052721 tungsten Inorganic materials 0.000 claims description 7
- 239000010937 tungsten Substances 0.000 claims description 7
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 239000007789 gas Substances 0.000 description 67
- 239000000463 material Substances 0.000 description 15
- 230000007423 decrease Effects 0.000 description 6
- 239000010410 layer Substances 0.000 description 6
- 229910052782 aluminium Inorganic materials 0.000 description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 5
- 239000004020 conductor Substances 0.000 description 5
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 description 5
- 150000002500 ions Chemical class 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000009792 diffusion process Methods 0.000 description 4
- 239000012528 membrane Substances 0.000 description 4
- 230000001681 protective effect Effects 0.000 description 4
- 239000003507 refrigerant Substances 0.000 description 4
- 230000008021 deposition Effects 0.000 description 3
- 239000004065 semiconductor Substances 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 229910003481 amorphous carbon Inorganic materials 0.000 description 2
- 229910021417 amorphous silicon Inorganic materials 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000014509 gene expression Effects 0.000 description 2
- 238000001020 plasma etching Methods 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 description 1
- 229910001882 dioxygen Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 229910001928 zirconium oxide Inorganic materials 0.000 description 1
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- 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
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- 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
- H01L21/31116—Etching inorganic layers by chemical means by dry-etching
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- 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
- H01L21/76801—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 dielectrics, e.g. smoothing
- H01L21/76802—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 dielectrics, e.g. smoothing by forming openings in dielectrics
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- 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
- H01J37/32009—Arrangements for generation of plasma specially adapted for examination or treatment of objects, e.g. plasma sources
- H01J37/32082—Radio frequency generated discharge
- H01J37/32091—Radio frequency generated discharge the radio frequency energy being capacitively coupled to the plasma
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- 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
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- 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
- H01L21/32137—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 of silicon-containing layers
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- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Drying Of Semiconductors (AREA)
- Plasma Technology (AREA)
- Plasma & Fusion (AREA)
Abstract
【解決手段】シリコン酸化膜及び当該シリコン酸化膜上に設けられたマスクを有する被処理体を処理ガスのプラズマに晒して、シリコン酸化膜OXをエッチングする工程を含む。マスクは、シリコン酸化膜OX上に設けられた第1の膜L1、及び、当該第1の膜上に設けられた第2の膜L2を含み、プラズマ中の活性種に対して、第2の膜は第1の膜のエッチングレートよりも低いエッチングレートを有する膜からなる。
【選択図】図3
Description
・エッチング時間tの経過後に第2の膜L2が残る場合(t≦D2/E2の場合)
Dr=D1+D2−E2×t …(1)
・エッチング時間tの経過後に第2の膜L2が残されない場合(t≧D2/E2の場合)
Dr=D1+(E1/E2)×D2−E1×t …(2)
・エッチング時間t1の経過後に第2の膜L2が残る場合(t1≦D2/E2の場合)
T1≧D1+D2−E2×t1 …(3)
・エッチング時間t1の経過後に第2の膜L2が残されない場合(t1≧D2/E2の場合)
T1≧D1+(E1/E2)×D2−E1×t1 …(4)
Claims (6)
- シリコン酸化膜をエッチングする方法であって、
前記シリコン酸化膜及び該シリコン酸化膜上に設けられたマスクを有する被処理体を処理ガスのプラズマに晒して、該シリコン酸化膜をエッチングする工程を含み、
前記マスクは、前記シリコン酸化膜上に設けられた第1の膜、及び、該第1の膜上に設けられた第2の膜を含み、前記プラズマ中の活性種に対して、前記第2の膜は前記第1の膜のエッチングレートよりも低いエッチングレートを有する膜からなる、
方法。 - 前記第2の膜の膜厚は前記第1の膜の膜厚よりも小さい、請求項1に記載の方法。
- 前記第1の膜はポリシリコン膜である、請求項1又は2に記載の方法。
- 前記プラズマ中の活性種に対して、前記第2の膜は前記第1の膜のエッチングレートの1/3以下のエッチングレートを有する、請求項3に記載の方法。
- 前記第2の膜は、金属を含有する膜である、請求項1〜4の何れか一項に記載の方法。
- 前記第2の膜は、タングステン膜である、請求項5に記載の方法。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2013170218A JP6255187B2 (ja) | 2013-08-20 | 2013-08-20 | シリコン酸化膜をエッチングする方法 |
KR1020140107884A KR102175860B1 (ko) | 2013-08-20 | 2014-08-19 | 실리콘 산화막을 에칭하는 방법 |
US14/462,658 US9257301B2 (en) | 2013-08-20 | 2014-08-19 | Method of etching silicon oxide film |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2013170218A JP6255187B2 (ja) | 2013-08-20 | 2013-08-20 | シリコン酸化膜をエッチングする方法 |
Publications (3)
Publication Number | Publication Date |
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JP2015041624A true JP2015041624A (ja) | 2015-03-02 |
JP2015041624A5 JP2015041624A5 (ja) | 2016-07-07 |
JP6255187B2 JP6255187B2 (ja) | 2017-12-27 |
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JP2013170218A Expired - Fee Related JP6255187B2 (ja) | 2013-08-20 | 2013-08-20 | シリコン酸化膜をエッチングする方法 |
Country Status (3)
Country | Link |
---|---|
US (1) | US9257301B2 (ja) |
JP (1) | JP6255187B2 (ja) |
KR (1) | KR102175860B1 (ja) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2016201476A (ja) * | 2015-04-10 | 2016-12-01 | 東京エレクトロン株式会社 | プラズマエッチング方法、パターン形成方法及びクリーニング方法 |
KR20200105752A (ko) | 2019-03-01 | 2020-09-09 | 도쿄엘렉트론가부시키가이샤 | 기판 처리 방법 및 기판 처리 장치 |
JP2021141260A (ja) * | 2020-03-06 | 2021-09-16 | 東京エレクトロン株式会社 | ウエハを処理する方法 |
US11887822B2 (en) | 2020-07-07 | 2024-01-30 | Tokyo Electron Limited | Edge ring and etching apparatus |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6449674B2 (ja) | 2015-02-23 | 2019-01-09 | 東京エレクトロン株式会社 | プラズマ処理方法及びプラズマ処理装置 |
JP2016157793A (ja) * | 2015-02-24 | 2016-09-01 | 東京エレクトロン株式会社 | エッチング方法 |
KR20160116915A (ko) * | 2015-03-31 | 2016-10-10 | 삼성전자주식회사 | 반도체 소자 제조 방법 |
US9865471B2 (en) * | 2015-04-30 | 2018-01-09 | Tokyo Electron Limited | Etching method and etching apparatus |
JP6494424B2 (ja) * | 2015-05-29 | 2019-04-03 | 東京エレクトロン株式会社 | エッチング方法 |
KR102623767B1 (ko) * | 2017-09-01 | 2024-01-10 | 도쿄엘렉트론가부시키가이샤 | 에칭 방법 |
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2013
- 2013-08-20 JP JP2013170218A patent/JP6255187B2/ja not_active Expired - Fee Related
-
2014
- 2014-08-19 KR KR1020140107884A patent/KR102175860B1/ko active IP Right Grant
- 2014-08-19 US US14/462,658 patent/US9257301B2/en not_active Expired - Fee Related
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Cited By (5)
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JP2016201476A (ja) * | 2015-04-10 | 2016-12-01 | 東京エレクトロン株式会社 | プラズマエッチング方法、パターン形成方法及びクリーニング方法 |
US10290510B2 (en) | 2015-04-10 | 2019-05-14 | Tokyo Electron Limited | Plasma etching method, pattern forming method and cleaning method |
KR20200105752A (ko) | 2019-03-01 | 2020-09-09 | 도쿄엘렉트론가부시키가이샤 | 기판 처리 방법 및 기판 처리 장치 |
JP2021141260A (ja) * | 2020-03-06 | 2021-09-16 | 東京エレクトロン株式会社 | ウエハを処理する方法 |
US11887822B2 (en) | 2020-07-07 | 2024-01-30 | Tokyo Electron Limited | Edge ring and etching apparatus |
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US9257301B2 (en) | 2016-02-09 |
KR20150021475A (ko) | 2015-03-02 |
JP6255187B2 (ja) | 2017-12-27 |
KR102175860B1 (ko) | 2020-11-06 |
US20150056808A1 (en) | 2015-02-26 |
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