JP7702468B2 - 裏側ポンピングを用いた熱処理チャンバのリッド - Google Patents
裏側ポンピングを用いた熱処理チャンバのリッド Download PDFInfo
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- JP7702468B2 JP7702468B2 JP2023206653A JP2023206653A JP7702468B2 JP 7702468 B2 JP7702468 B2 JP 7702468B2 JP 2023206653 A JP2023206653 A JP 2023206653A JP 2023206653 A JP2023206653 A JP 2023206653A JP 7702468 B2 JP7702468 B2 JP 7702468B2
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Description
Claims (10)
- 中心軸に沿って延びるガス分散チャネルを包囲するハウジングであって、前記ガス分散チャネルが上部および下部を有する、前記ハウジング;
前記ハウジングに連結されたリッドプレートであって、前記ガス分散チャネルの前記下部に連結された中央開口部から前記リッドプレートの周辺部分まで下方および外方に延びる輪郭底面を有する前記リッドプレート;および
前記リッドプレートの下方に配置されたガス分配プレートであって、前記ガス分配プレートと前記リッドプレートとの間にポンピングチャネルを形成するように構成された上部外周輪郭を有し、かつ、上面と、底面であって、前記上面から前記底面まで前記ガス分配プレートを貫通する複数の開孔を有する前記底面とを有しており、前記リッドプレートの前記輪郭底面と前記ガス分配プレートの上面とが間隙を画定している、前記ガス分配プレート
を備え、
前記リッドプレートの前記輪郭底面が、内側ゾーン、中間ゾーンおよび外側ゾーンを含み、
前記内側ゾーンが、前記リッドプレートの中心軸から、前記中心軸から内側ゾーン半径方向距離まで画定されており、前記中間ゾーンが、前記内側ゾーン半径方向距離から、前記中心軸から中間ゾーン半径方向距離まで画定されており、前記外側ゾーンが、前記中間ゾーン半径方向距離から、前記輪郭底面の外周エッジにおける外側ゾーン半径方向距離まで画定され、
前記リッドプレートの前記輪郭底面の前記内側ゾーンが、前記リッドプレートの前記輪郭底面の前記中間ゾーンよりも大きな間隙を有し、前記リッドプレートの前記輪郭底面の前記中間ゾーンが、前記リッドプレートの前記輪郭底面の前記外側ゾーンよりも大きな間隙を有し、
前記外側ゾーンが、前記中間ゾーンから前記ガス分配プレートの前記上面まで傾斜して外側ゾーン角を形成しており、
前記輪郭底面の前記外側ゾーンが、前記リッドプレートに形成されたポンピング孔を通して前記ポンピングチャネルに接続されている、
処理チャンバのリッドアセンブリ。 - 前記輪郭底面の前記中間ゾーンが、実質的に均一な間隙を形成している、請求項1に記載のリッドアセンブリ。
- 前記実質的に均一な間隙が、2.54mm(0.1インチ)から50.8mm(2インチ)の範囲である、請求項2に記載のリッドアセンブリ。
- 前記中間ゾーンが、前記中心軸から前記外側ゾーン半径方向距離までの距離の10%から90%の範囲を占める、請求項1に記載のリッドアセンブリ。
- 前記ポンピング孔が、前記輪郭底面の前記外側ゾーンに形成されている、請求項1に記載のリッドアセンブリ。
- 中心軸に沿って延びるガス分散チャネルを包囲するハウジングであって、前記ガス分散チャネルが上部および下部を有する、前記ハウジング;
前記ハウジングに連結されたリッドプレートであって、前記ガス分散チャネルの前記下部に連結された中央開口部から前記リッドプレートの周辺部分まで下方および外方に延びる輪郭底面を有する前記リッドプレート;および
前記リッドプレートの下方に配置されたガス分配プレートであって、前記ガス分配プレートと前記リッドプレートとの間にポンピングチャネルを形成するように構成された上部外周輪郭を有し、かつ、上面と、底面であって、前記上面から前記底面まで前記ガス分配プレートを貫通する複数の開孔を有する前記底面とを有しており、前記リッドプレートの前記輪郭底面と前記ガス分配プレートの上面とが間隙を画定している、前記ガス分配プレート
を備え、
前記リッドプレートの前記輪郭底面が、内側ゾーン、中間ゾーンおよび外側ゾーンを含み、
前記内側ゾーンが、前記リッドプレートの中心軸から、前記中心軸から内側ゾーン半径方向距離まで画定されており、前記中間ゾーンが、前記内側ゾーン半径方向距離から、前記中心軸から中間ゾーン半径方向距離まで画定されており、前記外側ゾーンが、前記中間ゾーン半径方向距離から、前記輪郭底面の外周エッジにおける外側ゾーン半径方向距離まで画定され、
前記リッドプレートの前記輪郭底面の前記内側ゾーンが、前記リッドプレートの前記輪郭底面の前記中間ゾーンよりも大きな間隙を有し、前記リッドプレートの前記輪郭底面の前記中間ゾーンが、前記リッドプレートの前記輪郭底面の前記外側ゾーンよりも大きな間隙を有し、
前記外側ゾーンが、前記中間ゾーンから前記リッドプレートの前面へと傾斜して外側ゾーン角を形成しており、
前記輪郭底面の前記外側ゾーンが、前記リッドプレートに形成されたポンピング孔を通して前記ポンピングチャネルに接続されており、
前記ポンピング孔が、85°から95°の範囲の角度で前記輪郭底面の前記外側ゾーンと交差する、処理チャンバのリッドアセンブリ。 - 前記外側ゾーンに、24から144個の範囲のポンピング孔が存在する、請求項1に記載のリッドアセンブリ。
- 前記ポンピングチャネルと流体連結する少なくとも1つのポンプポートをさらに備える、請求項1に記載のリッドアセンブリ。
- 請求項1に記載の前記リッドアセンブリを備える処理チャンバ。
- 前記ガス分散チャネルに流体連結された遠隔プラズマ源をさらに備える、請求項9に記載の処理チャンバ。
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