JP5134363B2 - プラズマ加工システムによる基板エッチング法 - Google Patents
プラズマ加工システムによる基板エッチング法 Download PDFInfo
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- JP5134363B2 JP5134363B2 JP2007503965A JP2007503965A JP5134363B2 JP 5134363 B2 JP5134363 B2 JP 5134363B2 JP 2007503965 A JP2007503965 A JP 2007503965A JP 2007503965 A JP2007503965 A JP 2007503965A JP 5134363 B2 JP5134363 B2 JP 5134363B2
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- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 claims description 12
- 238000004519 manufacturing process Methods 0.000 claims description 12
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- 239000010949 copper Substances 0.000 description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 7
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- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 5
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- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 3
- 229910004298 SiO 2 Inorganic materials 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
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- 239000011737 fluorine Substances 0.000 description 1
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- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
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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
- 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
- H01L21/70—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
- H01L21/76807—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 for dual damascene structures
- H01L21/76811—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 for dual damascene structures involving multiple stacked pre-patterned 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
- H01L21/70—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
- H01L21/76807—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 for dual damascene structures
- H01L21/76813—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 for dual damascene structures involving a partial via etch
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Plasma & Fusion (AREA)
- Internal Circuitry In Semiconductor Integrated Circuit Devices (AREA)
- Drying Of Semiconductors (AREA)
Description
Claims (34)
- プラズマ加工システムにおいて、半導体層、該半導体層上方に提供された第1バリアー層、該第1バリアー層上方に提供された低k層、該低k層上方に提供された第3ハードマスク層、該第3ハードマスク層上方に提供された第2ハードマスク層、及び該第2ハードマスク層上方に提供された第1ハードマスク層を含んだ基板を第1エチャントと第2エチャントとによりエッチングする方法であって、
第1ハードマスク層の第1ハードマスク材料、第3ハードマスク層の第3ハードマスク材料、及び第1バリアー層の第1バリアー層材料に対して前記第2エチャントに比べエッチング可能性大であり、第2ハードマスク層の第2ハードマスク材料に対しては前記第2エチャントに比べエッチング可能性小である第1エチャントと、
第1ハードマスク層の第1ハードマスク材料、第3ハードマスク層の第3ハードマスク材料、及び第1バリアー層の第1バリアー層材料に対して前記第1エチャントに比べエッチング可能性小である第2エチャントとで前記基板を交互にエッチングするステップを含んでおり、
上記交互のエッチングするステップは、前記第1エチャントと前記第2エチャントを交互に使う少なくとも4つのサイクルを含んでおり、
前記第2エチャントは第2ハードマスク層の第2ハードマスク材料に対して前記第1エチャントに比べエッチング可能性大であり、
更に、第2バリアー材料で成る第2バリアー層を第3ハードマスク層と低k層との間に提供するステップを含んでおり、第2エチャントは第2バリアー材料に対して前記第1エチャントに比べエッチング可能性大であり、第1エチャントは第2バリアー材料に対して前記第2エチャントに比べエッチング可能性小であり、
第2バリアー層と第2ハードマスク層は、TEOSで形成されており、前記第1エチャントは、CF4及びCHF3の内の少なくとも一つであり、前記第2エチャントは、C4F6及びC4F8の内の少なくとも一つであることを特徴とする方法。 - 交互にエッチングするステップは、低k層を第2エチャントで部分的にエッチングするステップを含んでいることを特徴とする請求項1記載の方法。
- 交互にエッチングするステップは、第1バリアー層を第1エチャントで部分的にエッチングするステップを含んでいることを特徴とする請求項2記載の方法。
- 交互にエッチングするステップは、第1ハードマスク材料を実質的に除去するステップを含んでいることを特徴とする請求項3記載の方法。
- 交互にエッチングするステップは、第2バリアー層を第2エチャントで部分的にエッチングするステップを含んでいることを特徴とする請求項4記載の方法。
- 第2エチャントは第2ハードマスク層、低k層及び第2バリアー層の少なくとも1部を実質的同時にエッチングすることを特徴とする請求項5記載の方法。
- 第1ハードマスク材料、第2ハードマスク材料、及び第3ハードマスク材料をデュアルダマシン製造法のためにリトグラフ技術でパターン化することを特徴とする請求項1記載の方法。
- 第1ハードマスク材料はSiNであることを特徴とする請求項1記載の方法。
- 第1ハードマスク材料はSiCであることを特徴とする請求項1記載の方法。
- 第3ハードマスク材料はSiNであることを特徴とする請求項1記載の方法。
- 第3ハードマスク材料はSiCであることを特徴とする請求項1記載の方法。
- 第1バリアー層はSiNであることを特徴とする請求項1記載の方法。
- 第1バリアー層はSiCであることを特徴とする請求項1記載の方法。
- 第1エチャントはCF4であることを特徴とする請求項1記載の方法。
- 第1エチャントはCHF3であることを特徴とする請求項1記載の方法。
- 第2エチャントはC4F6であることを特徴とする請求項1記載の方法。
- 第2エチャントはC4F8であることを特徴とする請求項1記載の方法。
- プラズマ加工システムにおいて、半導体層、該半導体層上方に提供された第1バリアー層、該第1バリアー層上方に提供された低k層、該低k層上方に提供された第2バリアー層、該第2バリアー層上方に提供された第3ハードマスク層、該第3ハードマスク層上方に提供された第2ハードマスク層、及び該第2ハードマスク層上方に提供された第1ハードマスク層を含んだ基板を第1エチャントと第2エチャントとによりエッチングする方法であって、
本方法は、第1ハードマスク層の第1ハードマスク材料、第3ハードマスク層の第3ハードマスク材料、及び第1バリアー層の第1バリアー層材料に対しては前記第2エチャントに比べエッチング可能性大であり、第2ハードマスク層の第2ハードマスク材料に対しては前記第2エチャントに比べエッチング可能性小である前記第1エチャントと、
第1ハードマスク層の第1ハードマスク材料、第3ハードマスク層の第3ハードマスク材料、及び第1バリアー層の第1バリアー層材料に対して前記第1エチャントに比べエッチング可能性小である第2エチャントとで前記基板を交互にエッチングするステップを含んでおり、
上記交互のエッチングするステップは、前記第1エチャントと前記第2エッチャントを交互に使う少なくとも4つのサイクルを含んでおり、
前記第1エチャントは第2ハードマスク層の第2ハードマスク材料と第2バリアー層に対して前記第2エチャントに比べエッチング可能性大であり、
第2バリアー層と第2ハードマスク層は、TEOSで形成されており、前記第1エチャントは、CF4及びCHF3の内の少なくとも一つであり、前記第2エチャントは、C4F6及びC4F8の内の少なくとも一つであることを特徴とする方法。 - 交互にエッチングするステップは、低k層を第2エチャントで部分的にエッチングするステップを含んでいることを特徴とする請求項18記載の方法。
- 交互にエッチングするステップは、第1バリアー層を第1エチャントで部分的にエッチングするステップを含んでいることを特徴とする請求項19記載の方法。
- 交互にエッチングするステップは、第1ハードマスク材料を実質的に除去するステップを含んでいることを特徴とする請求項20記載の方法。
- 交互にエッチングするステップは、第2バリアー層を第2エチャントで部分的にエッチングするステップを含んでいることを特徴とする請求項18記載の方法。
- 第2エチャントは、第2ハードマスク層、低k層、及び第2バリアー層の少なくとも1部を実質的同時にエッチングするステップを含んでいることを特徴とする請求項18記載の方法。
- 第1ハードマスク材料、第2ハードマスク材料、及び第3ハードマスク材料をデュアルダマシン製造法のためにリトグラフ技術でパターン化することを特徴とする請求項18記載の方法。
- 第1ハードマスク材料はSiNであることを特徴とする請求項18記載の方法。
- 第1ハードマスク材料はSiCであることを特徴とする請求項18記載の方法。
- 第3ハードマスク材料はSiNであることを特徴とする請求項18記載の方法。
- 第3ハードマスク材料はSiCであることを特徴とする請求項18記載の方法。
- 第1バリアー層はSiNであることを特徴とする請求項18記載の方法。
- 第1バリアー層はSiCであることを特徴とする請求項18記載の方法。
- 第1エチャントはCF4であることを特徴とする請求項18記載の方法。
- 第1エチャントはCHF3であることを特徴とする請求項18記載の方法。
- 第2エチャントはC4F6であることを特徴とする請求項18記載の方法。
- 第2エチャントはC4F8であることを特徴とする請求項18記載の方法。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/804,430 | 2004-03-19 | ||
US10/804,430 US7078350B2 (en) | 2004-03-19 | 2004-03-19 | Methods for the optimization of substrate etching in a plasma processing system |
PCT/US2005/007886 WO2005091974A2 (en) | 2004-03-19 | 2005-03-09 | Methods for the optimization of substrate etching in a plasma processing system |
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JP2007529905A JP2007529905A (ja) | 2007-10-25 |
JP5134363B2 true JP5134363B2 (ja) | 2013-01-30 |
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JP2007503965A Expired - Fee Related JP5134363B2 (ja) | 2004-03-19 | 2005-03-09 | プラズマ加工システムによる基板エッチング法 |
Country Status (6)
Country | Link |
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US (1) | US7078350B2 (ja) |
JP (1) | JP5134363B2 (ja) |
KR (1) | KR101221158B1 (ja) |
CN (1) | CN1997771B (ja) |
TW (1) | TWI352388B (ja) |
WO (1) | WO2005091974A2 (ja) |
Families Citing this family (31)
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US8083890B2 (en) * | 2005-09-27 | 2011-12-27 | Lam Research Corporation | Gas modulation to control edge exclusion in a bevel edge etching plasma chamber |
US7909960B2 (en) * | 2005-09-27 | 2011-03-22 | Lam Research Corporation | Apparatus and methods to remove films on bevel edge and backside of wafer |
US20070068623A1 (en) * | 2005-09-27 | 2007-03-29 | Yunsang Kim | Apparatus for the removal of a set of byproducts from a substrate edge and methods therefor |
KR100698103B1 (ko) * | 2005-10-11 | 2007-03-23 | 동부일렉트로닉스 주식회사 | 듀얼 다마센 형성방법 |
US20070224827A1 (en) * | 2006-03-22 | 2007-09-27 | Ying Xiao | Methods for etching a bottom anti-reflective coating layer in dual damascene application |
US7618889B2 (en) * | 2006-07-18 | 2009-11-17 | Applied Materials, Inc. | Dual damascene fabrication with low k materials |
WO2008047715A1 (fr) * | 2006-10-12 | 2008-04-24 | Nissan Chemical Industries, Ltd. | procédé de fabrication d'un dispositif semi-conducteur à l'aide d'un stratifié à quatre couches |
US8084357B2 (en) | 2007-04-11 | 2011-12-27 | United Microelectronics Corp. | Method for manufacturing a dual damascene opening comprising a trench opening and a via opening |
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US20090283310A1 (en) * | 2007-04-11 | 2009-11-19 | Wei-Chih Chen | Multi cap layer and manufacturing method thereof |
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TW200601452A (en) | 2006-01-01 |
KR20060127209A (ko) | 2006-12-11 |
CN1997771A (zh) | 2007-07-11 |
CN1997771B (zh) | 2010-11-10 |
JP2007529905A (ja) | 2007-10-25 |
WO2005091974A3 (en) | 2006-09-21 |
WO2005091974A9 (en) | 2005-11-24 |
TWI352388B (en) | 2011-11-11 |
KR101221158B1 (ko) | 2013-01-18 |
US20050205519A1 (en) | 2005-09-22 |
US7078350B2 (en) | 2006-07-18 |
WO2005091974A2 (en) | 2005-10-06 |
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