JP6643950B2 - プラズマ処理方法 - Google Patents
プラズマ処理方法 Download PDFInfo
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- JP6643950B2 JP6643950B2 JP2016102794A JP2016102794A JP6643950B2 JP 6643950 B2 JP6643950 B2 JP 6643950B2 JP 2016102794 A JP2016102794 A JP 2016102794A JP 2016102794 A JP2016102794 A JP 2016102794A JP 6643950 B2 JP6643950 B2 JP 6643950B2
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- 238000003672 processing method Methods 0.000 title claims description 15
- 238000012545 processing Methods 0.000 claims description 72
- 238000000034 method Methods 0.000 claims description 44
- 230000008569 process Effects 0.000 claims description 41
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 34
- 239000010453 quartz Substances 0.000 claims description 31
- 230000008859 change Effects 0.000 claims description 15
- 239000000758 substrate Substances 0.000 claims description 12
- 230000007423 decrease Effects 0.000 claims description 2
- 238000005530 etching Methods 0.000 description 27
- 230000002093 peripheral effect Effects 0.000 description 11
- 230000000052 comparative effect Effects 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 4
- 230000006870 function Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 150000002500 ions Chemical class 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229910052814 silicon oxide Inorganic materials 0.000 description 3
- BSYNRYMUTXBXSQ-UHFFFAOYSA-N Aspirin Chemical compound CC(=O)OC1=CC=CC=C1C(O)=O BSYNRYMUTXBXSQ-UHFFFAOYSA-N 0.000 description 2
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 238000005229 chemical vapour deposition Methods 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 2
- 229910052731 fluorine Inorganic materials 0.000 description 2
- 239000011737 fluorine Substances 0.000 description 2
- 238000004886 process control Methods 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000009616 inductively coupled plasma Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000001020 plasma etching Methods 0.000 description 1
- 238000009832 plasma treatment Methods 0.000 description 1
- 230000002123 temporal effect Effects 0.000 description 1
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- H—ELECTRICITY
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- 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
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- 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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- 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
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- 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
- H01J37/32174—Circuits specially adapted for controlling the RF discharge
- H01J37/32183—Matching circuits
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- H01J37/32431—Constructional details of the reactor
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- 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
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- 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
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- H01J37/3255—Material
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- H01J37/32—Gas-filled discharge tubes
- H01J37/32431—Constructional details of the reactor
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- H01J37/32—Gas-filled discharge tubes
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- H01J37/32577—Electrical connecting means
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- 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
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- H01J37/32431—Constructional details of the reactor
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- H01J37/32642—Focus rings
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- H01J37/32—Gas-filled discharge tubes
- H01J37/32431—Constructional details of the reactor
- H01J37/32798—Further details of plasma apparatus not provided for in groups H01J37/3244 - H01J37/32788; special provisions for cleaning or maintenance of the apparatus
- H01J37/3288—Maintenance
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- H01J2237/32—Processing objects by plasma generation
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- H01J2237/3343—Problems associated with etching
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- H01J2237/32—Processing objects by plasma generation
- H01J2237/33—Processing objects by plasma generation characterised by the type of processing
- H01J2237/334—Etching
- H01J2237/3343—Problems associated with etching
- H01J2237/3347—Problems associated with etching bottom of holes or trenches
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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
- H01L21/302—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
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- H01L22/00—Testing or measuring during manufacture or treatment; Reliability measurements, i.e. testing of parts without further processing to modify the parts as such; Structural arrangements therefor
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- Physics & Mathematics (AREA)
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- Plasma & Fusion (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Drying Of Semiconductors (AREA)
- Plasma Technology (AREA)
Description
まず、本発明の一実施形態に係るプラズマ処理装置1の構成の一例について、図1のプラズマ処理装置1の縦断面の一例を参照しながら説明する。本実施形態では、プラズマ処理装置1の一例として容量結合型プラズマ処理装置を挙げて説明する。本実施形態にかかるプラズマ処理装置1にて実行されるプラズマ処理は、特に限定されないが、半導体ウェハ(以下、「ウェハ」という。)に対するエッチング処理やCVD(Chemical Vapor Deposition)法による成膜処理が挙げられる。
本実施形態に係るプラズマ処理装置1では、フォーカスリング15の上方に石英部材22が設けられている。図2は、石英部材22の有無とチルティングの結果の一例を示す。図2の右側は、内側上部電極21iと外側上部電極21oとの間に10mmの石英部材22が設けられている本実施形態の構成におけるフォーカスリング15の消耗とチルティングの結果の一例を示す。図2の左側は、内側上部電極21iと外側上部電極21oとの間に石英部材22が設けられていない比較例の構成におけるフォーカスリング15の消耗とチルティングの結果の一例を示す。
次に、外側DCを可変に制御したときのチルティングの結果について説明する。図3では、外側上部電極21oに印加される外側DC(Outer CD)が150V、500V、1000Vに制御されたときのチルティング角度θの結果の一例を示す。なお、本実験においては、外側DCは可変に制御されるが、内側上部電極21iに印加される内側DCは固定して500Vに制御される。
次に、外側DCの制御によるプロセス制御について図4及び図5を参照しながら説明する。図4は、本実施形態に係る外側上部電極21oに印加する外側DCの制御に対するプラズマの電子密度Neの一例を示す。図5は、本実施形態に係る外側上部電極21oに印加する外側DCの制御に対するエッチングレートの一例を示す。
次に、本実施形態にかかるプラズマ処理装置1を用いて行われるプラズマ処理方法について、図6及び図7を参照しながら説明する。図6は、本実施形態にかかるプラズマ処理方法の一例を示すフローチャートである。図7は、本実施形態に係るプロセスとチルティングの許容角度とを対応させたテーブルの一例である。
10 処理容器
11 載置台(下部電極)
14 静電チャック
15 フォーカスリング
21 ガスシャワーヘッド(上部電極)
21i 内側上部電極
21o 外側上部電極
21d 電極板
21u 電極支持体
21b 電極板
21t 電極支持体
22 石英部材
32 第1高周波電源
34 第2高周波電源
39 ガス供給部
100 制御部
Claims (3)
- 真空排気可能な処理容器と、
前記処理容器内で被処理基板を載置する下部電極と、
前記下部電極の周囲に配置されるフォーカスリングと、
前記処理容器内で前記下部電極に対向して配置される内側上部電極と、
前記処理容器内で前記内側上部電極から電気的に絶縁して該内側上部電極の外側に配置される外側上部電極と、
前記内側上部電極と前記外側上部電極との間であって、かつ前記フォーカスリングの上方に配置される石英部材と、
前記内側上部電極及び前記外側上部電極と前記下部電極との間の処理空間に処理ガスを供給するガス供給部と、
高周波放電によって前記処理ガスのプラズマを生成するための第1高周波の電力を前記下部電極もしく前記内側上部電極及び前記外側上部電極に印加する第1高周波給電部と、
前記外側上部電極に可変の第1直流電圧を印加する第1の直流給電部と、
前記第1直流電圧を制御する制御部と、
を有するプラズマ処理装置であって、
前記制御部は、前記被処理基板に形成された凹部の断面形状の開口部の中心と底部の中心とを結んだ線と、前記開口部の中心から垂直方向に延びる線とがなす角度であるチルティング角度の変化量を低下するように、前記第1直流電圧を制御する、プラズマ処理方法。 - 前記内側上部電極に可変の第2の直流電圧を印加する第2の直流給電部を有する、
請求項1に記載のプラズマ処理方法。 - 前記制御部は、プロセスの種類と、前記被処理基板に形成された凹部に発生するチルティングの許容角度とを対応付けた記憶部を参照して、実行するプロセスに対応する前記チルティングの許容角度内に前記チルティング角度の変化量を低下するように、前記第1直流電圧を制御する、
請求項1又は2に記載のプラズマ処理方法。
Priority Applications (4)
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JP2016102794A JP6643950B2 (ja) | 2016-05-23 | 2016-05-23 | プラズマ処理方法 |
US15/598,463 US20170338084A1 (en) | 2016-05-23 | 2017-05-18 | Plasma processing method |
KR1020170062720A KR102350148B1 (ko) | 2016-05-23 | 2017-05-22 | 플라즈마 처리 방법 |
CN201710367196.1A CN107424899A (zh) | 2016-05-23 | 2017-05-23 | 等离子体处理方法 |
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JP2016102794A JP6643950B2 (ja) | 2016-05-23 | 2016-05-23 | プラズマ処理方法 |
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JP2017212051A JP2017212051A (ja) | 2017-11-30 |
JP6643950B2 true JP6643950B2 (ja) | 2020-02-12 |
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US (1) | US20170338084A1 (ja) |
JP (1) | JP6643950B2 (ja) |
KR (1) | KR102350148B1 (ja) |
CN (1) | CN107424899A (ja) |
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JP7033907B2 (ja) * | 2017-12-21 | 2022-03-11 | 東京エレクトロン株式会社 | プラズマエッチング装置及びプラズマエッチング方法 |
JP7055054B2 (ja) * | 2018-04-11 | 2022-04-15 | 東京エレクトロン株式会社 | プラズマ処理装置、プラズマ制御方法、及びプラズマ制御プログラム |
JP7094154B2 (ja) * | 2018-06-13 | 2022-07-01 | 東京エレクトロン株式会社 | 成膜装置および成膜方法 |
JP7142551B2 (ja) * | 2018-12-03 | 2022-09-27 | 東京エレクトロン株式会社 | プラズマ処理装置およびプラズマ処理方法 |
JP7296829B2 (ja) | 2019-09-05 | 2023-06-23 | 東京エレクトロン株式会社 | プラズマ処理装置、処理方法、上部電極構造 |
KR20230068011A (ko) * | 2021-11-10 | 2023-05-17 | 삼성전자주식회사 | 기판 처리 장치 및 이를 이용한 반도체 소자 제조 방법 |
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US5716534A (en) * | 1994-12-05 | 1998-02-10 | Tokyo Electron Limited | Plasma processing method and plasma etching method |
DE69733962T2 (de) * | 1996-10-11 | 2006-05-24 | Tokyo Electron Ltd. | Plasma-ätzmethode |
KR100271766B1 (ko) * | 1998-04-28 | 2001-01-15 | 윤종용 | 반도체 장치 제조설비의 진단 시스템과 이를 이용한 식각설비및 노광설비 |
JP4854874B2 (ja) * | 2001-06-22 | 2012-01-18 | 東京エレクトロン株式会社 | ドライエッチング方法 |
KR100595065B1 (ko) * | 2001-06-22 | 2006-06-30 | 동경 엘렉트론 주식회사 | 드라이 에칭 방법 |
US6855225B1 (en) * | 2002-06-25 | 2005-02-15 | Novellus Systems, Inc. | Single-tube interlaced inductively coupling plasma source |
KR101247857B1 (ko) * | 2004-06-21 | 2013-03-26 | 도쿄엘렉트론가부시키가이샤 | 플라즈마 처리 장치 |
US20070209925A1 (en) * | 2006-03-09 | 2007-09-13 | Applied Materials, Inc. | Etch and sidewall selectivity in plasma sputtering |
JP4833890B2 (ja) * | 2007-03-12 | 2011-12-07 | 東京エレクトロン株式会社 | プラズマ処理装置及びプラズマ分布補正方法 |
JP2009239012A (ja) * | 2008-03-27 | 2009-10-15 | Tokyo Electron Ltd | プラズマ処理装置及びプラズマエッチング方法 |
JP2010034416A (ja) * | 2008-07-30 | 2010-02-12 | Hitachi High-Technologies Corp | プラズマ処理装置およびプラズマ処理方法 |
TWI571929B (zh) * | 2012-01-17 | 2017-02-21 | 東京威力科創股份有限公司 | 基板載置台及電漿處理裝置 |
JP6120527B2 (ja) * | 2012-11-05 | 2017-04-26 | 東京エレクトロン株式会社 | プラズマ処理方法 |
JP6244518B2 (ja) * | 2014-04-09 | 2017-12-13 | 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 |
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2016
- 2016-05-23 JP JP2016102794A patent/JP6643950B2/ja active Active
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2017
- 2017-05-18 US US15/598,463 patent/US20170338084A1/en not_active Abandoned
- 2017-05-22 KR KR1020170062720A patent/KR102350148B1/ko active IP Right Grant
- 2017-05-23 CN CN201710367196.1A patent/CN107424899A/zh active Pending
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Publication number | Publication date |
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JP2017212051A (ja) | 2017-11-30 |
KR102350148B1 (ko) | 2022-01-11 |
CN107424899A (zh) | 2017-12-01 |
KR20170132096A (ko) | 2017-12-01 |
US20170338084A1 (en) | 2017-11-23 |
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