JP5809396B2 - 基板処理方法及び基板処理装置 - Google Patents
基板処理方法及び基板処理装置 Download PDFInfo
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- 238000012545 processing Methods 0.000 title claims description 139
- 239000000758 substrate Substances 0.000 title claims description 100
- 238000003672 processing method Methods 0.000 title claims description 28
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 26
- 239000010453 quartz Substances 0.000 claims description 24
- 238000003860 storage Methods 0.000 claims description 12
- 238000005530 etching Methods 0.000 claims description 8
- 238000000034 method Methods 0.000 description 23
- 230000008569 process Effects 0.000 description 20
- 230000002093 peripheral effect Effects 0.000 description 19
- 238000001020 plasma etching Methods 0.000 description 16
- 239000000463 material Substances 0.000 description 12
- 230000006870 function Effects 0.000 description 11
- 238000009826 distribution Methods 0.000 description 9
- 229910052782 aluminium Inorganic materials 0.000 description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 8
- 230000005684 electric field Effects 0.000 description 7
- 238000012986 modification Methods 0.000 description 7
- 230000004048 modification Effects 0.000 description 7
- 239000003990 capacitor Substances 0.000 description 6
- 230000007423 decrease Effects 0.000 description 4
- 239000003989 dielectric material Substances 0.000 description 4
- 238000009792 diffusion process Methods 0.000 description 4
- RUDFQVOCFDJEEF-UHFFFAOYSA-N yttrium(III) oxide Inorganic materials [O-2].[O-2].[O-2].[Y+3].[Y+3] RUDFQVOCFDJEEF-UHFFFAOYSA-N 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000009832 plasma treatment Methods 0.000 description 3
- 239000004065 semiconductor Substances 0.000 description 3
- 239000010409 thin film Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- PIGFYZPCRLYGLF-UHFFFAOYSA-N Aluminum nitride Chemical compound [Al]#N PIGFYZPCRLYGLF-UHFFFAOYSA-N 0.000 description 1
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 229910021421 monocrystalline silicon Inorganic materials 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- -1 quartz Chemical class 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
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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
- H01J37/02—Details
- H01J37/04—Arrangements of electrodes and associated parts for generating or controlling the discharge, e.g. electron-optical arrangement or ion-optical arrangement
-
- 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
- H01J37/32009—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
-
- 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
- H01J37/32532—Electrodes
- H01J37/3255—Material
-
- 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
- H01J37/32532—Electrodes
- H01J37/32568—Relative arrangement or disposition of electrodes; moving means
-
- 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
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- Analytical Chemistry (AREA)
- Plasma & Fusion (AREA)
- General Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Drying Of Semiconductors (AREA)
- Plasma Technology (AREA)
Description
ここで、Cは電気的容量(静電容量)、εは比誘電率、Sは絶縁性部材(ギャップG又は誘電体26)の表面積、dは絶縁性部材の厚さを示す。
上部電極24に誘電体26として石英板を埋め込んだ図1の装置において、石英板の厚さを3.4mm、10mm、15mmで変化させ、それぞれチャンバ内圧力を60mTorr(7.98Pa)、サセプタ12に印加するプラズマ生成用電力を400W、バイアス用電力を1000Wとし、処理ガスとしてC4F8:45sccm、Ar:1000sccm、O2:30sccmの混合ガスを用い、サセプタ12の温度を20℃、上部電極24の温度を60℃としてサセプタ12に載置したウエハWにプラズマエッチング処理を施した場合におけるウエハWにおけるE/Rのギャップ依存性を求め、結果を図2に示した。図2中、縦軸はE/R、横軸はウエハWの中心部からの距離を示す。また、(A)は、石英板の厚さが3.4mmの場合、(B)は、石英板の厚さが10mmの場合、(C)は、石英板の厚さが15mmの場合を示す。なお、ギャップGは、22mmから80mmの範囲で変動させた。各グラフ中の「Gap30」、「Gap50」、「Gap80」・・・等は、上部電極24とサセプタ12との間のギャップGを変化させた場合における各ギャップGを「mm」単位で示したものである。
上部電極24に誘電体26として石英板を埋め込んだ図1の装置において、石英板の厚さを3.4mm、10mm、15mmで変化させ、それぞれチャンバ内圧力を80mTorr(1.06×10Pa)、サセプタ12に印加するプラズマ生成用電力を500W、バイアス用電力を1000Wとし、処理ガスとしてCF4:250sccm、Ar:200sccmの混合ガスを用い、サセプタ12の温度を20℃、上部電極24の温度を60℃としてサセプタ12に載置したウエハWにプラズマエッチング処理を施した場合におけるウエハWにおけるE/Rのギャップ依存性を求め、結果を図3に示した。図3中、縦軸はE/R、横軸はウエハWの中心部からの距離を示す。また、(A)は、石英板の厚さが3.4mmの場合、(B)は、石英板の厚さが10mmの場合、(C)は、石英板の厚さが15mmの場合を示す。なお、ギャップGは、22mmから80mmの範囲で変動させた。各グラフ中の「Gap30」、「Gap50」、「Gap80」・・・等は、図2と同様、上部電極24とサセプタ12との間のギャップGを変化させた場合における各ギャップGを「mm」単位で示したものである。
上部電極として以下の3つの仕様を準備した。
11 処理室
12 サセプタ(下部電極)
22 シャワーヘッド
23、27 ガス孔
24 上部電極
26 誘電体
32 ベローズ
W ウエハ
G ギャップ
Claims (7)
- プラズマを用いて基板にエッチング処理を施す基板処理方法において、
前記基板を収容する収容室と、該収容室内に配置され前記基板を載置する下部電極と、該下部電極に対向配置された上部電極と、前記下部電極に接続された高周波電源と、前記上部電極及び前記下部電極の間の処理空間と、前記上部電極と電気的に接続された接地とを有し、前記上部電極及び前記下部電極の一方を他方に対して移動可能とした基板処理装置において前記基板におけるエッチングレートを変化させる基板処理方法であって、
前記上部電極の少なくとも一部に厚さが10mm〜15mmの石英板からなる誘電体を前記下部電極に載置された基板に対向するように埋め込んで、前記処理空間に生じるプラズマ及び前記接地の間の電位差を、前記プラズマ及び前記誘電体の間の電位差、並びに、前記誘電体及び前記接地の間の電位差に分割し、
さらに、前記上部電極と前記下部電極との間隔を変動させることを特徴とする基板処理方法。 - 前記上部電極は平板状の電極であり、前記誘電体は、前記上部電極の平面方向に沿って設けられていることを特徴とする請求項1記載の基板処理方法。
- 前記誘電体は、前記上部電極に載置された基板の中央部に対向する部分のみに設けられていることを特徴とする請求項2記載の基板処理方法。
- 前記誘電体は、中心部に貫通孔を有する円板状を呈しており、前記貫通孔が、前記上部電極に載置された基板の中央部に対向するように前記上部電極に埋め込まれていることを特徴とする請求項2記載の基板処理方法。
- 前記上部電極と前記下部電極との間隔を小さくして前記エッチングレートを大きくすることを特徴とする請求項1乃至4のいずれか1項に記載の基板処理方法。
- 請求項1乃至5のいずれか1項に記載の基板処理方法に適用される基板処理装置であって、
基板を収容する収容室と、該収容室内に配置され前記基板を載置する下部電極と、該下部電極に対向配置された上部電極と、前記下部電極に接続された高周波電源と、前記上部電極及び前記下部電極の間の処理空間と、前記上部電極と電気的に接続された接地とを有し、前記上部電極及び前記下部電極の一方を他方に対して移動可能とし、且つ前記上部電極の少なくとも一部に厚さが10mm〜15mmの石英板からなる誘電体が前記下部電極に載置された基板に対向するように埋め込まれていることを特徴とする基板処理装置。 - 前記上部電極は平板状の電極であり、前記誘電体は、前記上部電極の平面方向に沿って設けられていることを特徴とする請求項6記載の基板処理装置。
Priority Applications (7)
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JP2010144164A JP5809396B2 (ja) | 2010-06-24 | 2010-06-24 | 基板処理方法及び基板処理装置 |
KR1020110061214A KR101756853B1 (ko) | 2010-06-24 | 2011-06-23 | 기판 처리 방법 및 기판 처리 장치 |
US13/167,574 US8592319B2 (en) | 2010-06-24 | 2011-06-23 | Substrate processing method and substrate processing apparatus |
CN201110175740.5A CN102299067B (zh) | 2010-06-24 | 2011-06-24 | 基板处理方法 |
CN201410521359.3A CN104282523B (zh) | 2010-06-24 | 2011-06-24 | 基板处理装置 |
TW100122278A TWI497585B (zh) | 2010-06-24 | 2011-06-24 | 基板處理方法及基板處理裝置 |
US14/060,964 US9524847B2 (en) | 2010-06-24 | 2013-10-23 | Substrate processing apparatus |
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JP (1) | JP5809396B2 (ja) |
KR (1) | KR101756853B1 (ja) |
CN (2) | CN102299067B (ja) |
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JP2013247161A (ja) * | 2012-05-23 | 2013-12-09 | Ulvac Japan Ltd | ドライエッチング装置 |
KR102004587B1 (ko) * | 2013-02-21 | 2019-07-26 | 가부시키가이샤 이아스 | 기판의 에칭장치 및 기판의 분석방법 |
US9293303B2 (en) * | 2013-08-30 | 2016-03-22 | Taiwan Semiconductor Manufacturing Company, Ltd. | Low contamination chamber for surface activation |
KR101800321B1 (ko) * | 2016-04-18 | 2017-11-22 | 최상준 | 건식 에칭장치 |
JP6932070B2 (ja) * | 2017-11-29 | 2021-09-08 | 東京エレクトロン株式会社 | フォーカスリング及び半導体製造装置 |
KR20200131432A (ko) * | 2019-05-14 | 2020-11-24 | 삼성전자주식회사 | 샤워 헤드 어셈블리 및 이를 갖는 플라즈마 처리 장치 |
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JPWO2023281286A1 (ja) * | 2021-07-08 | 2023-01-12 |
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JP4642528B2 (ja) * | 2005-03-31 | 2011-03-02 | 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 |
JP4654738B2 (ja) * | 2005-04-05 | 2011-03-23 | パナソニック株式会社 | プラズマ処理装置 |
US7943007B2 (en) * | 2007-01-26 | 2011-05-17 | Lam Research Corporation | Configurable bevel etcher |
JP5294669B2 (ja) * | 2008-03-25 | 2013-09-18 | 東京エレクトロン株式会社 | プラズマ処理装置 |
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US20110318934A1 (en) | 2011-12-29 |
US20140048210A1 (en) | 2014-02-20 |
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CN104282523B (zh) | 2017-04-12 |
TW201216357A (en) | 2012-04-16 |
KR20110140102A (ko) | 2011-12-30 |
CN102299067A (zh) | 2011-12-28 |
US9524847B2 (en) | 2016-12-20 |
US8592319B2 (en) | 2013-11-26 |
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