JP7061889B2 - 被処理体の載置装置及び処理装置 - Google Patents
被処理体の載置装置及び処理装置 Download PDFInfo
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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
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Description
まず、本発明の一実施形態に係る処理装置1の一例について、図1を参照しながら説明する。図1は、一実施形態に係る処理装置1の断面の一例を示す図である。本実施形態に係る処理装置1は、金属製、例えば、アルミニウム又はステンレス鋼製の円筒型の処理容器10を有し、その内部は、プラズマエッチングやプラズマCVD等のプラズマ処理が行われる処理室となっている。処理容器10は、被処理体の一例である半導体ウェハW(以下、「ウェハW」という。)を処理するための処理空間を画成する。処理容器10は接地されている。
次に、図2を参照して、エッジリング30の消耗によって生じるシースの変化と、エッチングレート及びチルティングの変動について説明する。図2(a)に示すように、エッジリング30が新品の場合、ウェハWの上面とエッジリング30の上面とが同じ高さになるようにエッジリング30の厚さが設計されている。このとき、プラズマ処理中のウェハWのシースとエッジリング30のシースとは同じ高さになる。この状態では、ウェハW及びエッジリング30へのプラズマからのイオンの照射角度は垂直になり、この結果、ウェハWに形成されるホール等のエッチング形状は垂直になり、エッチングレートの面内分布は均一なる。
図3は、エッジリング30、載置台11及びバネ状の導電性部材50の径方向の断面を示す図である。エッジリング30の下面には第一の凹部30aが形成されている。第一の凹部30aは、エッジリング30の下面にて全周にわたって周方向に形成された溝である。基台11aの上面であって第一の凹部30aに対向する位置には、第二の凹部11a1が形成されている。第二の凹部11a1は、基台11aの上面にて全周にわたって周方向に形成された溝である。
次に、一実施形態に係るバネ状の導電性部材50の形状の一例について、図4及び図5を参照しながら説明する。図4は、一実施形態に係るバネ状の導電性部材50の形状1を示す図である。図5は、一実施形態に係るバネ状の導電性部材50の形状2を示す図である。
図4に示すように、一実施形態に係るバネ状の導電性部材50の形状1の例では、第一のバネ状部材50aは、所定幅の円形部分が周方向に所定の間隔で全周にわたって配置される構造を有する。また、図4のA-A断面に示すように、第一のバネ状部材50aの円形部分の一部には開口50a1が設けられている。
図5に示すように、一実施形態に係るバネ状の導電性部材50の形状2の例では、第一のバネ状部材50aは、所定幅の円形部分が周方向に所定の間隔で全周にわたって配置される構造を有する。また、図5のB-B断面及びC-C断面に示すように、第一のバネ状部材50aの円形部分の一部には開口50a1が設けられている。第一のバネ状部材50aの円形部分は、半円よりも大きい円弧形状であり、開口50a1により第一の凹部30aの内部において柔軟に変形することができる。
次に、一実施形態に係るバネ状の導電性部材50の配置と発熱評価の実験結果の一例について、図6を参照しながら説明する。図6は、本実施形態に係るバネ状の導電性部材50の配置と比較例の配置においてエッジリング30の発熱状態を実験した結果を示す。図6のバネ状の導電性部材の配置に示すように、本実施形態では、バネ状の導電性部材50がエッジリング30の下面の第一の凹部30aに全周にわたって配置される。一方、比較例では、10mmのバネ状の導電性部材50pがエッジリング30の下面の第一の凹部30aに等間隔に4カ所配置される。
10 :処理容器
11 :載置台
11a:基台
11a1:第二の凹部
15 :バッフル板
18 :排気装置
21 :第1高周波電源
22 :第2高周波電源
23 :ブロッキングコンデンサ
24 :ガスシャワーヘッド
25 :静電チャック
25a:吸着電極
25b:誘電層
26 :直流電源
28 :可変直流電源
30 :エッジリング
30a:第一の凹部
31 :冷媒室
35 :伝熱ガス供給部
40 :処理ガス供給部
43 :制御部
50 :バネ状の導電性部材
50a:第一のバネ状部材
50a1:開口
50b:第二のバネ状部材
50b1;開口
50c:接続部
Claims (11)
- 処理容器の内部にて被処理体を載置する載置台と、
前記載置台の周縁部に配置されるエッジリングと、
前記エッジリングに全周にわたって周方向に形成された第一の凹部において前記エッジリングに接する第一のバネ状部材と、前記周縁部に前記第一の凹部に対応して形成された第二の凹部において前記載置台に接する第二のバネ状部材と、を有し、前記エッジリングの全周にわたって周方向に環状に配置されるバネ状の導電性部材と、
を有する被処理体の載置装置。 - 前記バネ状の導電性部材は、
前記第一のバネ状部材と前記第二のバネ状部材とを接続する接続部を有する、
請求項1に記載の載置装置。 - 前記接続部は、前記第一のバネ状部材と前記第二のバネ状部材とを垂直に接続する、
請求項2に記載の載置装置。 - 前記第一の凹部の径方向の断面は、テーパー形状を有し、前記第一の凹部の開口は底部よりも狭い
前記第二の凹部の径方向の断面は、テーパー形状を有し、前記第二の凹部の開口は底部よりも狭い、
請求項1から3の何れか一項に記載の載置装置。 - 前記第一のバネ状部材と前記第二のバネ状部材とは、一部が開口する所定幅の円形部分を有し、周方向に所定の間隔で配置される、
請求項4に記載の載置装置。 - 垂直に接続された前記第一のバネ状部材の円形部分と前記第二のバネ状部材の円形部分とは、同一方向に開口する、
請求項5に記載の載置装置。 - 垂直に接続された前記第一のバネ状部材の円形部分と前記第二のバネ状部材の円形部分とは、反対方向に開口する、
請求項5に記載の載置装置。 - 前記第一のバネ状部材の隣接する円形部分及び前記第二のバネ状部材の隣接する円形部分は、反対方向に開口する、
請求項7に記載の載置装置。 - 前記第一の凹部は前記エッジリングの下面に形成され、
前記第二の凹部は前記載置台の上面であって前記第一の凹部に対応する位置に形成され、
前記第一のバネ状部材は前記第一の凹部にて係止し、前記第二のバネ状部材は前記第二の凹部にて係止する、
請求項1から8の何れか一項に記載の載置装置。 - 前記載置台は基台と前記基台の上に設けられた静電チャックを有し、
前記エッジリングの内周部が前記静電チャック上に位置する、
請求項1から9の何れか一項に記載の載置装置。 - 被処理体を処理するための処理空間を画成する処理容器と、
請求項1から10の何れか一項に記載の載置装置と、
を有する処理装置。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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JP2018025241A JP7061889B2 (ja) | 2018-02-15 | 2018-02-15 | 被処理体の載置装置及び処理装置 |
US16/269,897 US11201039B2 (en) | 2018-02-15 | 2019-02-07 | Mounting apparatus for object to be processed and processing apparatus |
KR1020190017048A KR102667942B1 (ko) | 2018-02-15 | 2019-02-14 | 피처리체의 탑재 장치 및 처리 장치 |
TW108105024A TWI789492B (zh) | 2018-02-15 | 2019-02-15 | 被處理體的載置裝置及處理裝置 |
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JP2018025241A JP7061889B2 (ja) | 2018-02-15 | 2018-02-15 | 被処理体の載置装置及び処理装置 |
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JP7061889B2 true JP7061889B2 (ja) | 2022-05-02 |
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JP7516198B2 (ja) * | 2020-05-01 | 2024-07-16 | 東京エレクトロン株式会社 | エッチング装置及びエッチング方法 |
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