JP7441944B2 - プラズマ対向センサを有するプロセスセンサ及び光学壁 - Google Patents
プラズマ対向センサを有するプロセスセンサ及び光学壁 Download PDFInfo
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Description
本願は、2019年11月13日出願の米国特許非仮出願第16/682,616号の優先権を主張し、その全内容は参照によって本明細書に組み込まれる。
チャンバの表面の変化は、様々な処理パラメータに影響を及ぼす。例えば、エッチング副生成物のチャンバ壁への再堆積は、所与のプロセスのエッチング速度を変更し得る。したがって、基板がチャンバ内で処理されると、エッチング速度(又は他のプロセスパラメータ)が変化し、基板間の不均一な処理をもたらし得る。
Claims (20)
- 光学センサシステムであって、
第1の表面と、前記第1の表面と反対を向いている第2の表面とを有する光学的に透明な本体であって、前記第2の表面から奥まった第3の表面を更に含む、光学的に透明な本体と、
前記第3の表面の上のターゲットと、
前記第1の表面を前記ターゲットに光学的に結合する第1のリフレクタと、
前記第1の表面を前記ターゲットに光学的に結合する第2のリフレクタと
を備え、
前記第1のリフレクタ及び前記第2のリフレクタが、前記第2の表面と前記第3の表面との間にある、光学センサシステム。 - 光学センサシステムであって、
第1の表面と、前記第1の表面と反対を向いている第2の表面とを有する光学的に透明な本体であって、前記第2の表面から奥まった第3の表面を更に含む、光学的に透明な本体と、
前記第3の表面の上のターゲットと、
前記第1の表面を前記ターゲットに光学的に結合する第1のリフレクタと、
前記第1の表面を前記ターゲットに光学的に結合する第2のリフレクタと
を備え、
前記第1のリフレクタが、前記第2の表面と前記第3の表面との間にあり、前記第2のリフレクタが、前記第1の表面と前記第3の表面との間にある、光学センサシステム。 - 前記第1のリフレクタ及び第2のリフレクタが、前記光学的に透明な本体に埋め込まれている、請求項1又は2に記載の光学センサシステム。
- 光路が、前記ターゲットを通過する、請求項1又は2に記載の光学センサシステム。
- ハウジングと、
前記ハウジング内のレンズであって、前記光学的に透明な本体の前記第1の表面に隣接している、レンズと
を更に備える、請求項1又は2に記載の光学センサシステム。 - 前記光学的に透明な本体の前記第1の表面がレンズである、請求項1又は2に記載の光学センサシステム。
- 前記光学的に透明な本体に光学的に結合した光源と、
前記光学的に透明な本体に光学的に結合した光学検出器と
を更に備える、請求項1又は2に記載の光学センサシステム。 - 前記光源が、単一波長源又は広帯域光源である、請求項7に記載の光学センサシステム。
- 前記光学検出器が、単一波長検出器又は分光計である、請求項7に記載の光学センサシステム。
- 光学センサであって、
光学的に透明な本体であって、
第1の表面、
前記第1の表面と反対側の第2の表面、及び
前記第2の表面の中に奥まった第3の表面を含む、光学的に透明な本体と、
前記第3の表面の上のターゲットと、
前記光学的に透明な本体に埋め込まれた第1のリフレクタと、
前記光学的に透明な本体に埋め込まれた第2のリフレクタと、
前記光学的に透明な本体に光学的に結合した光源と、
前記光学的に透明な本体に光学的に結合した光学検出器と
を備え、
前記第1のリフレクタ及び前記第2のリフレクタが、前記第2の表面と前記第3の表面との間に配置されている、光学センサ。 - 光学センサであって、
光学的に透明な本体であって、
第1の表面、
前記第1の表面と反対側の第2の表面、及び
前記第2の表面の中に奥まった第3の表面を含む、光学的に透明な本体と、
前記第3の表面の上のターゲットと、
前記光学的に透明な本体に埋め込まれた第1のリフレクタと、
前記光学的に透明な本体に埋め込まれた第2のリフレクタと、
前記光学的に透明な本体に光学的に結合した光源と、
前記光学的に透明な本体に光学的に結合した光学検出器と
を備え、
前記第1のリフレクタが、前記第2の表面と前記第3の表面との間にあり、前記第2のリフレクタが、前記第1の表面と前記第3の表面との間にある、光学センサ。 - 前記光学的に透明な本体が、ガラス又はサファイアを含む、請求項10又は11に記載の光学センサ。
- 前記第1のリフレクタがミラーである、請求項10又は11に記載の光学センサ。
- 前記第1のリフレクタと前記ターゲットのうちの一方又は両方が、格子を含む、請求項10又は11に記載の光学センサ。
- プラズマ処理チャンバであって、
前記プラズマ処理チャンバの壁を通過する光学感知システムを備え、前記光学感知システムは、
レンズと、
前記レンズに隣接した光学的に透明な本体であって、前記光学的に透明な本体は、
前記レンズに向く第1の表面、
前記第1の表面と反対側の第2の表面、及び
前記第2の表面の中に奥まった第3の表面を含み、前記第3の表面は前記プラズマ処理チャンバの中央を向く、前記光学的に透明な本体と、
前記第3の表面の上のターゲットと、
前記光学的に透明な本体に埋め込まれた第1のリフレクタと、
前記光学的に透明な本体に埋め込まれた第2のリフレクタと
を備え、
前記第1のリフレクタ及び前記第2のリフレクタが、前記第2の表面と前記第3の表面との間に配置されている、プラズマ処理チャンバ。 - プラズマ処理チャンバであって、
前記プラズマ処理チャンバの壁を通過する光学感知システムを備え、前記光学感知システムは、
レンズと、
前記レンズに隣接した光学的に透明な本体であって、前記光学的に透明な本体は、
前記レンズに向く第1の表面、
前記第1の表面と反対側の第2の表面、及び
前記第2の表面の中に奥まった第3の表面を含み、前記第3の表面は前記プラズマ処理チャンバの中央を向く、前記光学的に透明な本体と、
前記第3の表面の上のターゲットと、
前記光学的に透明な本体に埋め込まれた第1のリフレクタと、
前記光学的に透明な本体に埋め込まれた第2のリフレクタと
を備え、
前記第1のリフレクタが、前記第2の表面と前記第3の表面との間にあり、前記第2のリフレクタが、前記第1の表面と前記第3の表面との間にある、プラズマ処理チャンバ。 - 前記光学感知システムが、プラズマの状態、壁の状態、基板の状態、又はそれらの任意の組み合わせを提供するように構成されている、請求項15又は16に記載のプラズマ処理チャンバ。
- 複数の光学感知システムを更に備える、請求項15又は16に記載のプラズマ処理チャンバ。
- 前記光学的に透明な本体に光学的に結合した光源と、
前記光学的に透明な本体に光学的に結合した光学検出器と
を更に備える、請求項15又は16に記載のプラズマ処理チャンバ。 - 前記ターゲットが、前記光学的に透明な本体の外側にあり、かつ、前記プラズマ処理チャンバ内にある、請求項15又は16に記載のプラズマ処理チャンバ。
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US16/682,616 US11499869B2 (en) | 2019-11-13 | 2019-11-13 | Optical wall and process sensor with plasma facing sensor |
US16/682,616 | 2019-11-13 | ||
PCT/US2020/054970 WO2021096620A1 (en) | 2019-11-13 | 2020-10-09 | Optical wall and process sensor with plasma facing sensor |
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EP (1) | EP4059040A4 (ja) |
JP (1) | JP7441944B2 (ja) |
KR (1) | KR20220097495A (ja) |
CN (1) | CN114641844A (ja) |
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US11708635B2 (en) | 2020-06-12 | 2023-07-25 | Applied Materials, Inc. | Processing chamber condition and process state monitoring using optical reflector attached to processing chamber liner |
US12009191B2 (en) | 2020-06-12 | 2024-06-11 | Applied Materials, Inc. | Thin film, in-situ measurement through transparent crystal and transparent substrate within processing chamber wall |
US12031910B2 (en) | 2021-09-15 | 2024-07-09 | Applied Materials, Inc. | Transmission corrected plasma emission using in-situ optical reflectometry |
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Citations (2)
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JP2001160576A (ja) | 1999-12-02 | 2001-06-12 | Hitachi Ltd | 膜厚、加工深さ測定装置及び成膜加工方法 |
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