KR102667399B1 - 극저온 냉각식 회전가능 정전 척 - Google Patents
극저온 냉각식 회전가능 정전 척 Download PDFInfo
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- KR102667399B1 KR102667399B1 KR1020207019956A KR20207019956A KR102667399B1 KR 102667399 B1 KR102667399 B1 KR 102667399B1 KR 1020207019956 A KR1020207019956 A KR 1020207019956A KR 20207019956 A KR20207019956 A KR 20207019956A KR 102667399 B1 KR102667399 B1 KR 102667399B1
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- 239000002826 coolant Substances 0.000 claims abstract description 67
- 239000007789 gas Substances 0.000 claims description 59
- 239000000758 substrate Substances 0.000 claims description 38
- 230000008878 coupling Effects 0.000 claims description 36
- 238000010168 coupling process Methods 0.000 claims description 36
- 238000005859 coupling reaction Methods 0.000 claims description 36
- 238000000034 method Methods 0.000 claims description 19
- 238000007789 sealing Methods 0.000 claims description 12
- 238000000429 assembly Methods 0.000 claims description 2
- 230000000712 assembly Effects 0.000 claims description 2
- 229910001220 stainless steel Inorganic materials 0.000 claims description 2
- 239000010935 stainless steel Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 description 6
- 238000001816 cooling Methods 0.000 description 5
- 238000005240 physical vapour deposition Methods 0.000 description 5
- 239000000919 ceramic Substances 0.000 description 4
- 238000000151 deposition Methods 0.000 description 4
- 239000012530 fluid Substances 0.000 description 4
- 230000008021 deposition Effects 0.000 description 3
- 238000005137 deposition process Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 210000002304 esc Anatomy 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 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
- 238000004377 microelectronic Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- 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
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
- C23C14/50—Substrate holders
- C23C14/505—Substrate holders for rotation of the substrates
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- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/15—Devices for holding work using magnetic or electric force acting directly on the work
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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
- C23C16/458—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 supporting substrates in the reaction chamber
- C23C16/4582—Rigid and flat substrates, e.g. plates or discs
- C23C16/4583—Rigid and flat substrates, e.g. plates or discs the substrate being supported substantially horizontally
- C23C16/4586—Elements in the interior of the support, e.g. electrodes, heating or cooling devices
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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
- C23C16/46—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 heating the substrate
- C23C16/463—Cooling of the substrate
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- H01J37/34—Gas-filled discharge tubes operating with cathodic sputtering
- H01J37/3488—Constructional details of particle beam apparatus not otherwise provided for, e.g. arrangement, mounting, housing, environment; special provisions for cleaning or maintenance of the apparatus
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- H01L21/6831—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for supporting or gripping using electrostatic chucks
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- H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
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- H01L21/687—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for supporting or gripping using mechanical means, e.g. chucks, clamps or pinches
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- H01L21/68785—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for supporting or gripping using mechanical means, e.g. chucks, clamps or pinches the wafers being placed on a susceptor, stage or support characterised by the mechanical construction of the susceptor, stage or support
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- H01L21/687—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for supporting or gripping using mechanical means, e.g. chucks, clamps or pinches
- H01L21/68714—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for supporting or gripping using mechanical means, e.g. chucks, clamps or pinches the wafers being placed on a susceptor, stage or support
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Abstract
Description
[0009] 도 1은 본 개시내용의 적어도 일부 실시예들에 따른 정전 척을 갖는 적합한 프로세스 챔버의 개략적인 측면도를 도시한다.
[0010] 도 2a는 본 개시내용의 적어도 일부 실시예들에 따른 정전 척의 상부 부분의 개략적인 단면도를 도시한다.
[0011] 도 2b는 본 개시내용의 적어도 일부 실시예들에 따른 정전 척의 하부 부분의 개략적인 단면도를 도시한다.
[0012] 도 2c는 도 2b의 정전 척의 일부의 개략적인 확대 단면도를 도시한다.
[0013] 이해를 용이하게 하기 위해, 도면들에 대해 공통인 동일한 엘리먼트들을 지정하기 위해 가능한 경우 동일한 참조 번호들이 사용되었다. 도면들은 실척대로 도시된 것이 아니고, 명확성을 위해 간략화될 수 있다. 일 실시예의 엘리먼트들 및 특징들은 추가적인 설명 없이 다른 실시예들에 유익하게 포함될 수 있다.
Claims (15)
- 기판을 지지하기 위한 지지 표면 및 대향하는 제2 표면을 갖는 유전체 디스크 ― 상기 지지 표면과 상기 제2 표면 사이에서 상기 유전체 디스크 내에 적어도 하나의 척킹 전극이 배치되고, 상기 유전체 디스크 내에 복수의 냉각제 채널들이 배치됨 ―;
상기 유전체 디스크의 제2 표면에 커플링되고, 냉각제 유입구 및 냉각제 유출구를 갖는 극저온 매니폴드(cryogenic manifold) ― 상기 냉각제 유입구와 상기 냉각제 유출구 둘 모두는 상기 복수의 냉각제 채널들에 유동적으로(fluidly) 커플링됨 ―;
샤프트 조립체 ― 상기 샤프트 조립체는 상기 샤프트 조립체의 제1 단부에서 상기 극저온 매니폴드에 커플링되고, 상기 샤프트 조립체는 상기 샤프트 조립체를 통해 연장되는 중앙 개구를 포함함 ―;
상기 제1 단부 반대편에 있는, 상기 샤프트 조립체의 제2 단부에서 상기 샤프트 조립체에 커플링된 극저온 공급 챔버;
공급 튜브(supply tube) ― 상기 공급 튜브는 극저온 매체를 수용하기 위해 상기 공급 튜브의 제1 단부에서 상기 극저온 공급 챔버에 커플링되고, 그리고 상기 복수의 냉각제 채널들에 상기 극저온 매체를 공급하기 위해 상기 공급 튜브의 제2 단부에서 상기 냉각제 유입구에 커플링되고, 상기 공급 튜브는 상기 중앙 개구를 통해 연장되고, 상기 샤프트 조립체와 동심임 ―;
리턴 튜브(return tube) ― 상기 리턴 튜브는, 상기 극저온 매체가 상기 복수의 냉각제 채널들을 통해 유동된 후에, 상기 극저온 공급 챔버로 상기 극저온 매체를 리턴하기 위해, 상기 리턴 튜브의 제1 단부에서 상기 냉각제 유출구에 커플링되고, 상기 리턴 튜브의 제2 단부에서 상기 극저온 공급 챔버에 커플링되고, 상기 리턴 튜브는 상기 중앙 개구를 통해 연장되고, 상기 공급 튜브와 동심이고, 상기 공급 튜브는 상기 리턴 튜브 내에 배치됨 ―;
전력 소스로부터의 전력을 상기 적어도 하나의 척킹 전극에 커플링시키는 것을 가능하게 하기 위해, 상기 샤프트 조립체의 제2 단부에 커플링된 슬립 링(slip ring); 및
상기 샤프트 조립체 및 상기 유전체 디스크를 회전시키기 위해, 상기 샤프트 조립체에 커플링된 구동 조립체를 포함하고,
상기 샤프트 조립체는, 중앙 채널을 갖고 그리고 상기 샤프트의 제1 단부에서 상기 슬립 링에 커플링되는 샤프트, 및 상기 제1 단부 반대편에 있는 상기 샤프트의 제2 단부에 커플링되고 그리고 회전 동안 상기 유전체 디스크를 실질적으로 수평으로 유지하도록 구성된 굴곡 커플링(flexure coupling)을 포함하는,
정전 척. - 제1 항에 있어서,
상기 굴곡 커플링 주위에 배치된 베어링 조립체를 더 포함하는,
정전 척. - 제1 항에 있어서,
상기 유전체 디스크에 유동적으로 커플링된 배면 가스 전달 시스템을 더 포함하며,
상기 배면 가스 전달 시스템은,
상기 샤프트 주위에 배치되고, 상기 샤프트와 동심이고, 배면 가스 커플링을 갖는 회전식 피드스루(rotary feedthrough) ― 상기 회전식 피드스루는 고정식 하우징(stationary housing), 및 상기 하우징 내에 배치된 회전가능 원통형 부분을 포함하고, 상기 고정식 하우징과 상기 회전가능 원통형 부분 사이에 2개의 환상 베어링 조립체들이 배치됨 ―;
상기 샤프트의 제2 단부에 커플링된 배면 가스 도관; 및
상기 샤프트 반대편에서 상기 배면 가스 도관에 커플링된 배면 가스 매니폴드를 포함하고,
상기 배면 가스 매니폴드는 상기 극저온 매니폴드와 상기 굴곡 커플링 사이에 배치되고,
상기 배면 가스 매니폴드는 상기 유전체 디스크 내의 배면 가스 유입구와 상기 배면 가스 도관을 유동적으로 커플링시키기 위한 매니폴드 채널을 포함하고,
상기 배면 가스 도관에 상기 배면 가스 커플링을 유동적으로 커플링시키기 위해, 상기 샤프트를 통해 배면 가스 채널이 형성되는,
정전 척. - 제3 항에 있어서,
상기 샤프트는 상기 샤프트의 외측 표면에 형성된 환상 리세스(recess)를 포함하며,
상기 환상 리세스는 상기 배면 가스 커플링에 인접하게 배치되고,
상기 배면 가스 채널은 상기 배면 가스 도관에 상기 환상 리세스를 유동적으로 커플링시키는,
정전 척. - 제3 항에 있어서,
상기 배면 가스 커플링 위에서 상기 고정식 하우징과 상기 회전가능 원통형 부분 사이에 배치된 제1 환상 밀봉 엘리먼트; 및
상기 배면 가스 커플링 아래에서 상기 고정식 하우징과 상기 회전가능 원통형 부분 사이에 배치된 제2 환상 밀봉 엘리먼트를 더 포함하며,
상기 제1 환상 밀봉 엘리먼트 및 상기 제2 환상 밀봉 엘리먼트는 상기 배면 가스 커플링을 통해 공급되는 배면 가스들의 누설을 방지하도록 구성되는,
정전 척. - 기판을 지지하기 위한 지지 표면 및 대향하는 제2 표면을 갖는 유전체 디스크 ― 상기 지지 표면과 상기 제2 표면 사이에서 상기 유전체 디스크 내에 적어도 하나의 척킹 전극이 배치되고, 상기 유전체 디스크 내에 복수의 냉각제 채널들이 배치됨 ―;
상기 유전체 디스크의 제2 표면에 커플링되고, 냉각제 유입구 및 냉각제 유출구를 갖는 극저온 매니폴드 ― 상기 냉각제 유입구와 상기 냉각제 유출구 둘 모두는 상기 복수의 냉각제 채널들에 유동적으로 커플링됨 ―;
샤프트 조립체 ― 상기 샤프트 조립체는 상기 샤프트 조립체의 제1 단부에서 상기 극저온 매니폴드에 커플링되고, 상기 샤프트 조립체는 상기 샤프트 조립체를 통해 연장되는 중앙 개구를 포함함 ―;
상기 제1 단부 반대편에 있는, 상기 샤프트 조립체의 제2 단부에서 상기 샤프트 조립체에 커플링된 극저온 공급 챔버;
공급 튜브 ― 상기 공급 튜브는 극저온 매체를 수용하기 위해 상기 공급 튜브의 제1 단부에서 상기 극저온 공급 챔버에 커플링되고, 그리고 상기 복수의 냉각제 채널들에 상기 극저온 매체를 공급하기 위해 상기 공급 튜브의 제2 단부에서 상기 냉각제 유입구에 커플링되고, 상기 공급 튜브는 상기 중앙 개구를 통해 연장되고, 상기 샤프트 조립체와 동심임 ―; 및
리턴 튜브 ― 상기 리턴 튜브는, 상기 극저온 매체가 상기 복수의 냉각제 채널들을 통해 유동된 후에, 상기 극저온 공급 챔버로 상기 극저온 매체를 리턴하기 위해, 상기 리턴 튜브의 제1 단부에서 상기 냉각제 유출구에 커플링되고, 상기 리턴 튜브의 제2 단부에서 상기 극저온 공급 챔버에 커플링되고, 상기 리턴 튜브는 상기 중앙 개구를 통해 연장되고, 상기 공급 튜브와 동심이고, 상기 공급 튜브는 상기 리턴 튜브 내에 배치됨 ―를 포함하고,
상기 극저온 공급 챔버는, 내부 볼륨을 정의하는 챔버 바디(body), 및 상기 공급 튜브에 유동적으로 커플링된 피드스루 유입구, 및 상기 리턴 튜브에 유동적으로 커플링된 피드스루 유출구를 갖는 피드스루 블록(feedthrough block)을 포함하는,
정전 척. - 제6 항에 있어서,
상기 내부 볼륨을 진공 압력으로 유지하기 위해, 상기 챔버 바디에 형성된 진공 포트를 통해 상기 내부 볼륨에 유동적으로 커플링된 진공 펌프를 더 포함하는,
정전 척. - 제6 항에 있어서,
상기 리턴 튜브의 하부 부분에 커플링되고, 상기 리턴 튜브와 동심으로 배치된 밀봉 튜브를 더 포함하며,
상기 리턴 튜브는 상기 밀봉 튜브의 일부를 통해 연장되고,
상기 밀봉 튜브는 상기 리턴 튜브의 하부 부분에 커플링된 천장 부분, 및 개방 최하부 단부를 포함하고,
상기 천장 부분은 상기 리턴 튜브의 하부 부분에 커플링되는,
정전 척. - 제8 항에 있어서,
상기 리턴 튜브의 최하측 표면에 커플링되고, 상기 밀봉 튜브 내에 배치된 벨로즈를 더 포함하며,
상기 벨로즈는 상기 피드스루 유출구에 유동적으로 커플링되는,
정전 척. - 제9 항에 있어서,
상기 벨로즈는 스테인리스 강으로 형성되고, 상기 리턴 튜브의 최하측 표면에 용접되는,
정전 척. - 제1 항에 있어서,
상기 공급 튜브의 외측 표면 상에 배치된 단열성 층을 더 포함하는,
정전 척. - 내부 볼륨을 갖는 챔버 바디; 및
상기 내부 볼륨의 하부 부분 내에 배치된 정전 척을 포함하며,
상기 정전 척은 제1 항 내지 제11 항 중 어느 한 항에 기재된 바와 같은,
프로세스 챔버. - 제12 항에 있어서,
상기 극저온 공급 챔버를 통해 상기 정전 척에 극저온 매체를 공급하기 위해, 상기 극저온 공급 챔버에 커플링된 칠러(chiller)를 더 포함하는,
프로세스 챔버. - 삭제
- 삭제
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EP3724914A4 (en) | 2021-10-13 |
JP2021506136A (ja) | 2021-02-18 |
US20190181028A1 (en) | 2019-06-13 |
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CN111448646A (zh) | 2020-07-24 |
US11149345B2 (en) | 2021-10-19 |
KR20200088500A (ko) | 2020-07-22 |
CN111448646B (zh) | 2025-01-03 |
WO2019118320A1 (en) | 2019-06-20 |
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