JP5802323B2 - エッチング処理方法 - Google Patents
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- JP5802323B2 JP5802323B2 JP2014244830A JP2014244830A JP5802323B2 JP 5802323 B2 JP5802323 B2 JP 5802323B2 JP 2014244830 A JP2014244830 A JP 2014244830A JP 2014244830 A JP2014244830 A JP 2014244830A JP 5802323 B2 JP5802323 B2 JP 5802323B2
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- 238000005530 etching Methods 0.000 title claims description 136
- 238000000034 method Methods 0.000 title claims description 68
- 239000007789 gas Substances 0.000 claims description 152
- 238000003672 processing method Methods 0.000 claims description 37
- 239000000758 substrate Substances 0.000 claims description 24
- 229910021420 polycrystalline silicon Inorganic materials 0.000 claims description 15
- 229920005591 polysilicon Polymers 0.000 claims description 15
- 230000008569 process Effects 0.000 claims description 11
- 229910052734 helium Inorganic materials 0.000 claims description 3
- 239000001307 helium Substances 0.000 claims description 3
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 claims description 3
- 239000010408 film Substances 0.000 description 207
- 150000002500 ions Chemical class 0.000 description 75
- 229910004298 SiO 2 Inorganic materials 0.000 description 34
- 150000001768 cations Chemical class 0.000 description 33
- 229920002120 photoresistant polymer Polymers 0.000 description 31
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 19
- 229910052799 carbon Inorganic materials 0.000 description 19
- 230000007423 decrease Effects 0.000 description 13
- 230000006870 function Effects 0.000 description 12
- 238000001020 plasma etching Methods 0.000 description 12
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 11
- 230000006872 improvement Effects 0.000 description 9
- 238000010494 dissociation reaction Methods 0.000 description 8
- 230000005593 dissociations Effects 0.000 description 8
- 239000012528 membrane Substances 0.000 description 8
- 229910052814 silicon oxide Inorganic materials 0.000 description 8
- 238000010586 diagram Methods 0.000 description 7
- 239000004065 semiconductor Substances 0.000 description 7
- 229910052710 silicon Inorganic materials 0.000 description 6
- 239000010703 silicon Substances 0.000 description 6
- 238000003860 storage Methods 0.000 description 6
- 230000001360 synchronised effect Effects 0.000 description 6
- 230000008859 change Effects 0.000 description 4
- 238000009826 distribution Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 238000000151 deposition Methods 0.000 description 3
- 230000008021 deposition Effects 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 238000013459 approach Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000002513 implantation Methods 0.000 description 2
- 238000006386 neutralization reaction Methods 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 241000406668 Loxodonta cyclotis Species 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 208000016253 exhaustion Diseases 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003472 neutralizing effect Effects 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 229910052756 noble gas Inorganic materials 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 238000012795 verification 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
- 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
- H01L21/02104—Forming layers
- H01L21/02107—Forming insulating materials on a substrate
- H01L21/02296—Forming insulating materials on a substrate characterised by the treatment performed before or after the formation of the layer
- H01L21/02299—Forming insulating materials on a substrate characterised by the treatment performed before or after the formation of the layer pre-treatment
- H01L21/02312—Forming insulating materials on a substrate characterised by the treatment performed before or after the formation of the layer pre-treatment treatment by exposure to a gas or vapour
- H01L21/02315—Forming insulating materials on a substrate characterised by the treatment performed before or after the formation of the layer pre-treatment treatment by exposure to a gas or vapour treatment by exposure to a plasma
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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
- H01L21/02104—Forming layers
- H01L21/02365—Forming inorganic semiconducting materials on a substrate
- H01L21/02612—Formation types
- H01L21/02617—Deposition types
- H01L21/02631—Physical deposition at reduced pressure, e.g. MBE, sputtering, evaporation
-
- 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
- H01L21/31105—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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- 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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- H—ELECTRICITY
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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
- H01L21/70—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
- H01L21/76822—Modification of the material of dielectric layers, e.g. grading, after-treatment to improve the stability of the layers, to increase their density etc.
- H01L21/76825—Modification of the material of dielectric layers, e.g. grading, after-treatment to improve the stability of the layers, to increase their density etc. by exposing the layer to particle radiation, e.g. ion implantation, irradiation with UV light or electrons etc.
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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
- H01L21/70—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
- H01L21/76822—Modification of the material of dielectric layers, e.g. grading, after-treatment to improve the stability of the layers, to increase their density etc.
- H01L21/76826—Modification of the material of dielectric layers, e.g. grading, after-treatment to improve the stability of the layers, to increase their density etc. by contacting the layer with gases, liquids or plasmas
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
- H05H1/00—Generating plasma; Handling plasma
- H05H1/24—Generating plasma
- H05H1/46—Generating plasma using applied electromagnetic fields, e.g. high frequency or microwave energy
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Electromagnetism (AREA)
- Inorganic Chemistry (AREA)
- Drying Of Semiconductors (AREA)
- Plasma Technology (AREA)
- Analytical Chemistry (AREA)
Description
10 基板処理装置
12 サセプタ
15 処理室
18 第1の高周波電源
20 第2の高周波電源
40 SiO2膜
41 カーボン膜
42 SiON膜
43 BARC膜
44,51,60 ホール
45 フォトレジスト膜
55 プラズマ生成用の高周波電力
56 イオン引き込み用の高周波電力
58 ポリシリコン膜
59 残渣膜
Claims (14)
- 内部にプラズマが生じる処理室、該処理室内部に配置された載置台及び該載置台に対向して前記処理室内部に配置された電極を備え、前記処理室内部に比較的周波数の高い第1の高周波電力が印加され、前記載置台に前記第1の高周波電力よりも周波数が低い第2の高周波電力が印加され、前記電極に直流電力が印加される基板処理装置において、
エッチング対象膜と、該エッチング対象膜上に形成されたマスク膜とを有し、且つ前記載置台に載置された基板にエッチング処理を施すエッチング処理方法であって、
前記マスク膜を用いて前記エッチング対象膜をプラズマでエッチングして前記エッチング対象膜にパターンを形成する対象膜エッチングステップを有し、
前記対象膜エッチングステップでは、前記直流電力を前記電極に印加するとともに、少なくとも前記第2の高周波電力を前記載置台にパルス波状に印加し、前記直流電力が前記電極に印加されている間に前記第2の高周波電力が前記載置台に印加されない状態を作り出すことにより、前記基板の表面上に発生するシースを消滅させて前記直流電力が印加される前記電極から生じる電子を前記パターンへ進入させることを特徴とするエッチング処理方法。 - 前記対象膜エッチングステップでは、前記第1の高周波電力もパルス波状に印加して前記第1の高周波電力が前記処理室内部に印加されない状態を作り出すことを特徴とする請求項1記載のエッチング処理方法。
- 前記対象膜エッチングステップでは、前記第1の高周波電力と前記第2の高周波電力とを同期させてパルス波状に印加することを特徴とする請求項2記載のエッチング処理方法。
- 前記対象膜エッチングステップでは、前記基板に生じるバイアス電圧の電位よりも低い電位で前記直流電力を前記電極に印加することを特徴とする請求項1乃至3のいずれか1項に記載のエッチング処理方法。
- 前記対象膜エッチングステップでは、前記第2の高周波電力を前記載置台に、周波数が1KHz〜50KHzのいずれかのパルス波状に印加することを特徴とする請求項1乃至4のいずれか1項に記載のエッチング処理方法。
- 前記周波数が10KHz〜50KHzのいずれかであることを特徴とする請求項5記載のエッチング処理方法。
- 前記対象膜エッチングステップでは、パルス波状に印加される前記第2の高周波電力のデューティー比が10%〜90%のいずれかであることを特徴とする請求項1乃至6のいずれか1項に記載のエッチング処理方法。
- 前記デューティー比が50%〜90%のいずれかであることを特徴とする請求項7記載のエッチング処理方法。
- 前記対象膜エッチングステップでは、前記第2の高周波電力が前記載置台に印加されない状態が少なくとも5マイクロ秒継続することを特徴とする請求項1乃至8のいずれか1項に記載のエッチング処理方法。
- 前記対象膜エッチングステップにおいて前記エッチング対象膜に形成されるパターンのアスペクト比は30以上であることを特徴とする請求項1乃至9のいずれか1項に記載のエッチング処理方法。
- 前記マスク膜は有機膜であることを特徴とする請求項1乃至10のいずれか1項に記載のエッチング処理方法。
- 前記マスク膜は無機膜であることを特徴とする請求項1乃至10のいずれか1項に記載のエッチング処理方法。
- 前記無機膜は少なくともポリシリコン膜を含むことを特徴とする請求項12記載のエッチング処理方法。
- 前記対象膜エッチングステップでは、少なくともヘリウムガスを含む混合ガスからプラズマを生成することを特徴とする請求項1乃至13のいずれか1項に記載のエッチング処理方法。
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US10920319B2 (en) | 2019-01-11 | 2021-02-16 | Applied Materials, Inc. | Ceramic showerheads with conductive electrodes |
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JP2015043470A (ja) | 2015-03-05 |
KR101860676B1 (ko) | 2018-05-23 |
JP5662079B2 (ja) | 2015-01-28 |
TWI518775B (zh) | 2016-01-21 |
TW201604958A (zh) | 2016-02-01 |
KR101760949B1 (ko) | 2017-07-24 |
KR20170087069A (ko) | 2017-07-27 |
TWI567822B (zh) | 2017-01-21 |
TW201201274A (en) | 2012-01-01 |
JP2011199243A (ja) | 2011-10-06 |
KR20110097706A (ko) | 2011-08-31 |
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