JP4579157B2 - 処理装置及び切り替え機構 - Google Patents
処理装置及び切り替え機構 Download PDFInfo
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- 230000007246 mechanism Effects 0.000 title claims description 61
- 230000005284 excitation Effects 0.000 claims description 122
- 238000000034 method Methods 0.000 claims description 70
- 230000008569 process Effects 0.000 claims description 53
- 230000005684 electric field Effects 0.000 claims description 2
- 239000007789 gas Substances 0.000 description 186
- 239000010408 film Substances 0.000 description 71
- 230000001603 reducing effect Effects 0.000 description 27
- 238000004140 cleaning Methods 0.000 description 22
- 239000012159 carrier gas Substances 0.000 description 19
- 239000000758 substrate Substances 0.000 description 18
- 235000012431 wafers Nutrition 0.000 description 16
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 9
- 238000006243 chemical reaction Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 6
- 230000004888 barrier function Effects 0.000 description 6
- 239000006227 byproduct Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 239000001301 oxygen Substances 0.000 description 6
- 229910052760 oxygen Inorganic materials 0.000 description 6
- 238000010926 purge Methods 0.000 description 6
- 238000000231 atomic layer deposition Methods 0.000 description 5
- 238000009616 inductively coupled plasma Methods 0.000 description 5
- 239000002994 raw material Substances 0.000 description 5
- 239000004065 semiconductor Substances 0.000 description 5
- 239000010409 thin film Substances 0.000 description 5
- 229910052581 Si3N4 Inorganic materials 0.000 description 4
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 4
- 229910003902 SiCl 4 Inorganic materials 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 150000004767 nitrides Chemical class 0.000 description 3
- 238000001228 spectrum Methods 0.000 description 3
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 2
- 238000002441 X-ray diffraction Methods 0.000 description 2
- 238000004833 X-ray photoelectron spectroscopy Methods 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 238000005092 sublimation method Methods 0.000 description 2
- 229910052715 tantalum Inorganic materials 0.000 description 2
- ITWBWJFEJCHKSN-UHFFFAOYSA-N 1,4,7-triazonane Chemical compound C1CNCCNCCN1 ITWBWJFEJCHKSN-UHFFFAOYSA-N 0.000 description 1
- PIGFYZPCRLYGLF-UHFFFAOYSA-N Aluminum nitride Chemical compound [Al]#N PIGFYZPCRLYGLF-UHFFFAOYSA-N 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 229910004529 TaF 5 Inorganic materials 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 239000010407 anodic oxide Substances 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- OEIMLTQPLAGXMX-UHFFFAOYSA-I tantalum(v) chloride Chemical compound Cl[Ta](Cl)(Cl)(Cl)Cl OEIMLTQPLAGXMX-UHFFFAOYSA-I 0.000 description 1
- MNWRORMXBIWXCI-UHFFFAOYSA-N tetrakis(dimethylamido)titanium Chemical compound CN(C)[Ti](N(C)C)(N(C)C)N(C)C MNWRORMXBIWXCI-UHFFFAOYSA-N 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- 239000006200 vaporizer Substances 0.000 description 1
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- C—CHEMISTRY; METALLURGY
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- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/44—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating
- C23C16/455—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating characterised by the method used for introducing gases into reaction chamber or for modifying gas flows in reaction chamber
- C23C16/45523—Pulsed gas flow or change of composition over time
- C23C16/45525—Atomic layer deposition [ALD]
- C23C16/45527—Atomic layer deposition [ALD] characterized by the ALD cycle, e.g. different flows or temperatures during half-reactions, unusual pulsing sequence, use of precursor mixtures or auxiliary reactants or activations
- C23C16/45536—Use of plasma, radiation or electromagnetic fields
- C23C16/45542—Plasma being used non-continuously during the ALD reactions
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- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/22—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the deposition of inorganic material, other than metallic material
- C23C16/30—Deposition of compounds, mixtures or solid solutions, e.g. borides, carbides, nitrides
- C23C16/34—Nitrides
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- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/44—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating
- C23C16/448—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating characterised by the method used for generating reactive gas streams, e.g. by evaporation or sublimation of precursor materials
- C23C16/452—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating characterised by the method used for generating reactive gas streams, e.g. by evaporation or sublimation of precursor materials by activating reactive gas streams before their introduction into the reaction chamber, e.g. by ionisation or addition of reactive species
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- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/44—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating
- C23C16/455—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating characterised by the method used for introducing gases into reaction chamber or for modifying gas flows in reaction chamber
- C23C16/45561—Gas plumbing upstream of the reaction chamber
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/8593—Systems
- Y10T137/86493—Multi-way valve unit
- Y10T137/86558—Plural noncommunicating flow paths
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- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/8593—Systems
- Y10T137/86493—Multi-way valve unit
- Y10T137/86558—Plural noncommunicating flow paths
- Y10T137/86566—Rotary plug
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/8593—Systems
- Y10T137/86493—Multi-way valve unit
- Y10T137/86574—Supply and exhaust
- Y10T137/86638—Rotary valve
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/8593—Systems
- Y10T137/86493—Multi-way valve unit
- Y10T137/86718—Dividing into parallel flow paths with recombining
- Y10T137/86726—Valve with bypass connections
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/8593—Systems
- Y10T137/86493—Multi-way valve unit
- Y10T137/86718—Dividing into parallel flow paths with recombining
- Y10T137/86743—Rotary
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/8593—Systems
- Y10T137/86493—Multi-way valve unit
- Y10T137/86718—Dividing into parallel flow paths with recombining
- Y10T137/86743—Rotary
- Y10T137/86751—Plug
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/8593—Systems
- Y10T137/86493—Multi-way valve unit
- Y10T137/86863—Rotary valve unit
- Y10T137/86871—Plug
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Description
一方、比較的低い温度において基板上で原料ガスの反応を促進するために、原料ガスを励起して励起種を用いる技術がある。励起種を生成するには様々な方法があるが、原料ガスをプラズマ化する方法が一般的である。
前記切替え機構は、シリンダと、該シリンダの内部に設けられた回転弁と、該回転弁を継続的に一方向に回転させるモータ機構を含み、前記シリンダに、前記励起装置により励起された処理ガスが供給される励起ガス供給通路と、励起された処理ガスを前記処理容器に供給するガス供給通路と、励起された処理ガスを前記処理容器を介さず排気する前記バイパスラインとが接続され、前記回転弁の外周に、一部を除いて円周方向に形成される溝状の環状通路が形成され、該環状通路の下方に中央通路が設けられ、前記環状通路は、前記励起ガス供給通路と前記バイパスラインとを連通可能に設けられ、前記中央通路は、前記回転弁の外周に設けられた開口部から回転弁の中心まで延在する横通路と、前記回転弁の軸に沿って中心から前記ガス供給通路まで下方に延在して前記励起ガス供給通路を前記ガス供給通路に接続する縦通路とを含み、前記回転弁の前記溝状の環状通路が形成されてない前記一部と、前記回転弁の外周に設けられた前記開口部とは、前記回転弁の回転軸に沿って上方から見たときに、同じ角度位置であり、平面上で互いに重なり合うように配置され、前記回転弁は、前記励起ガス供給通路が前記横通路の前記開口部に連通するときには励起された処理ガスが前記処理容器に流れるように切り替え、前記励起ガス供給通路が前記環状通路に連通するときには励起された処理ガスが前記バイパスラインに流れるように切り替えるよう動作することを特徴とする処理装置が提供される。
前記切り替え機構は、シリンダと、該シリンダの内部に設けられた回転弁と、該回転弁を継続的に一方向に回転させるモータ機構を含み、前記シリンダに、前記励起装置により励起された処理ガスが供給される励起ガス供給通路と、励起された処理ガスを前記処理容器に供給するガス供給通路と、励起された処理ガスを前記処理容器を介さず排気する前記バイパスラインとが接続され、前記回転弁の外周に、一部を除いて円周方向に形成される溝状の環状通路が形成され、該環状通路の下方に中央通路が設けられ、前記環状通路は、前記励起ガス供給通路と前記バイパスラインとを連通可能に設けられ、前記中央通路は、前記回転弁の外周に設けられた開口部から回転弁の中心まで延在する横通路と、前記回転弁の軸に沿って中心から前記ガス供給通路まで下方に延在して前記励起ガス供給通路を前記ガス供給通路に接続する縦通路とを含み、前記回転弁の前記溝状の環状通路が形成されてない前記一部と、前記回転弁の外周に設けられた前記開口部とは、前記回転弁の回転軸に沿って上方から見たときに、同じ角度位置であり、平面上で互いに重なり合うように配置され、前記回転弁は、前記励起ガス供給通路が前記横通路の前記開口部に連通するときには励起された処理ガスが前記処理容器に流れるように切り替え、前記励起ガス供給通路が前記環状通路に連通するときには励起された処理ガスが前記バイパスラインに流れるように切り替えるよう動作することを特徴とする切り替え機構が提供される。
基板(ウェハ)温度: 400℃
TiCl4供給量: 30sccm
NH3供給量: 200sccm
RFパワー: 200W
N2キャリアガス供給量: 200sccm
原料ガス排気方法: 真空排気
TiCl4供給時間: 5秒
真空引き時間: 5秒
NH3供給時間: 5秒
真空時間: 5秒
成長サイクル数: 200サイクル
4 載置台
6 ガス供給口
8 ターボモレキュラポンプ
10 ドライポンプ
12 励起装置
14 励起容器
16 第1の原料ガス供給装置
18 第2の原料ガス供給装置
20 切り替え機構
22 バイパスライン
24 開閉弁
30 回転式三方弁
32 シリンダ
34 回転弁
36 モータ機構
38 プラズマ供給通路
40 処理ガス供給通路
42 プラズマ排気通路
Claims (7)
- 供給された処理ガスを励起する励起装置と、
励起装置に接続され、励起された処理ガスが供給される処理容器と、
前記励起装置と前記処理容器との間に設けられ、励起された処理ガスの前記励起装置からの流れを切り替える切り替え機構と、
前記切り替え機構に接続されたバイパスラインと
を有し、
前記切り替え機構は、励起された処理ガスの前記励起装置からの流れを、前記処理容器と前記バイパスラインとのいずれか一方に切り替えるように構成され、
前記切り替え機構は、シリンダと、該シリンダの内部に設けられた回転弁と、該回転弁を継続的に一方向に回転させるモータ機構を含み、
前記シリンダに、前記励起装置により励起された処理ガスが供給される励起ガス供給通路と、励起された処理ガスを前記処理容器に供給するガス供給通路と、励起された処理ガスを前記処理容器を介さず排気する前記バイパスラインとが接続され、
前記回転弁の外周に、一部を除いて円周方向に形成される溝状の環状通路が形成され、該環状通路の下方に中央通路が設けられ、
前記環状通路は、前記励起ガス供給通路と前記バイパスラインとを連通可能に設けられ、
前記中央通路は、前記回転弁の外周に設けられた開口部から回転弁の中心まで延在する横通路と、前記回転弁の軸に沿って中心から前記ガス供給通路まで下方に延在して前記励起ガス供給通路を前記ガス供給通路に接続する縦通路とを含み、
前記回転弁の前記溝状の環状通路が形成されてない前記一部と、前記回転弁の外周に設けられた前記開口部とは、前記回転弁の回転軸に沿って上方から見たときに、同じ角度位置であり、平面上で互いに重なり合うように配置され、
前記回転弁は、前記励起ガス供給通路が前記横通路の前記開口部に連通するときには励起された処理ガスが前記処理容器に流れるように切り替え、前記励起ガス供給通路が前記環状通路に連通するときには励起された処理ガスが前記バイパスラインに流れるように切り替えるよう動作することを特徴とする処理装置。 - 請求項1記載の処理装置であって、
第2の処理ガスを供給するための処理ガス供給通路が前記回転弁の前記開口部に連通可能に設けられ、前記処理ガス供給通路が前記開口部に連通したときには前記第2の処理ガスが前記ガス供給通路を介して前記処理容器に供給され、
前記回転弁が一方向に連続して回転することにより、前記励起された処理ガスと前記第2の処理ガスが前記ガス供給通路を介して前記処理容器に交互に供給されるよう構成されたことを特徴とする処理装置。 - 請求項1記載の処理装置であって、
前記処理容器は前記処理ガス以外の第2の処理ガスを供給するガス供給装置に接続可能であり、励起された前記処理ガスと、励起された前記処理ガス以外の前記第2の処理ガスとを交互に前記処理容器に供給するように構成されたことを特徴とする処理装置。 - 請求項1記載の処理装置であって、
前記励起装置は、高周波プラズマ、ECRプラズマ、紫外線のいずれかにより処理ガスを励起することを特徴とする処理装置。 - 請求項1記載の処理装置であって、
前記励起装置は、筒状の励起容器と、該励起容器の外側に設けられた電磁コイルとを含み、電磁コイルにより高周波電界を前記励起容器の内部に発生させることにより、前記励起容器の外部から励起エネルギを前記励起容器内の処理ガスに注入するよう構成されたことを特徴とする処理装置。 - 請求項1記載の処理装置であって、
前記バイパスラインに接続された排気用のドライポンプをさらに有することを特徴とする処理装置。 - 供給された処理ガスを励起する励起装置と励起された処理ガスが供給される処理容器との間に設けられ、励起された処理ガスの前記励起装置からの流れを切り替える切り替え機構であって、
前記切り替え機構にバイパスラインが接続され、
前記切り替え機構は、励起された処理ガスの前記励起装置からの流れを、前記処理容器と前記バイパスラインとのいずれか一方に切り替えるように構成され、
前記切り替え機構は、シリンダと、該シリンダの内部に設けられた回転弁と、該回転弁を継続的に一方向に回転させるモータ機構を含み、
前記シリンダに、前記励起装置により励起された処理ガスが供給される励起ガス供給通路と、励起された処理ガスを前記処理容器に供給するガス供給通路と、励起された処理ガスを前記処理容器を介さず排気する前記バイパスラインとが接続され、
前記回転弁の外周に、一部を除いて円周方向に形成される溝状の環状通路が形成され、該環状通路の下方に中央通路が設けられ、
前記環状通路は、前記励起ガス供給通路と前記バイパスラインとを連通可能に設けられ、
前記中央通路は、前記回転弁の外周に設けられた開口部から回転弁の中心まで延在する横通路と、前記回転弁の軸に沿って中心から前記ガス供給通路まで下方に延在して前記励起ガス供給通路を前記ガス供給通路に接続する縦通路とを含み、
前記回転弁の前記溝状の環状通路が形成されてない前記一部と、前記回転弁の外周に設けられた前記開口部とは、前記回転弁の回転軸に沿って上方から見たときに、同じ角度位置であり、平面上で互いに重なり合うように配置され、
前記回転弁は、前記励起ガス供給通路が前記横通路の前記開口部に連通するときには励起された処理ガスが前記処理容器に流れるように切り替え、前記励起ガス供給通路が前記環状通路に連通するときには励起された処理ガスが前記バイパスラインに流れるように切り替えるよう動作することを特徴とする切り替え機構。
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