JP7802003B2 - ウエハエッジガスを排気するための流路を有する排除リング - Google Patents
ウエハエッジガスを排気するための流路を有する排除リングInfo
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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
本出願の一部として、本明細書と同時にPCT出願願書が提出される。この同時出願されたPCT出願願書に明記され、本出願が利益または優先権を主張する各出願は、参照によりその全体があらゆる目的で本明細書に組み込まれる。
Claims (18)
- 半導体ウエハの処理に使用するための排除リングであって、
上面および底面を有する外側円周セグメントと、前記外側円周セグメントの前記上面と前記外側円周セグメントの前記底面との間の距離は、前記排除リングの第1の厚さを画定し、
上面および底面を有する内側円周セグメントと、
前記外側円周セグメントの前記底面と前記内側円周セグメントの前記底面との間にまたがる1つまたは複数の移行面と
を備え、
前記内側円周セグメントの前記上面と前記内側円周セグメントの前記底面との間の距離は、前記排除リングの第2の厚さを画定し、
前記排除リングの前記第1の厚さは、前記排除リングの前記第2の厚さよりも大きく、
複数の流路が、前記外側円周セグメント内に形成され、
前記複数の流路の各流路は、前記1つまたは複数の移行面から、前記排除リングの前記外側円周セグメントを通って、前記排除リングの外部周囲に延び、
前記流路は、前記排除リングの前記外側円周セグメントの周縁に沿って互いに間隔を置いて配置され、
前記排除リングの中心軸に垂直であり、前記内側円周セグメントの前記底面と前記外側円周セグメントの前記底面との間に介在する第1の基準面における前記流路の総断面積は、前記排除リングの外側周囲と前記1つまたは複数の移行面に外接する基準円との間に画定される総リング底面面積の約16%~約20%の範囲、約23%~約28%の範囲または約35%~約43%の範囲である、排除リング。 - 請求項1に記載の排除リングはさらに、
複数の耳部と、前記耳部の各々は、前記排除リングの前記外側円周セグメントから延び、上面および底面を有し、
複数のフィンガと、前記フィンガの各々は、前記複数の耳部のそれぞれに取り付けられること
を備える、排除リング。 - 請求項2に記載の排除リングであって、
前記複数の耳部は、前記排除リングの前記外側円周セグメントの周りに実質的に等間隔に配置されている3つの耳部を含み、
前記複数の流路は、前記3つの耳部の各々の間に多数の流路を含み、流路の数は、3~16個の範囲である、
排除リング。 - 請求項3に記載の排除リングであって、
同じ数の流路が、前記3つの耳部の各々の間の前記外側円周セグメントを通っている、排除リング。 - 請求項4に記載の排除リングであって、
7~14個の流路が、前記3つの耳部の各々の間の前記外側円周セグメントを通して形成される、排除リング。 - 請求項3に記載の排除リングであって、
前記3つの耳部の各々に隣接する前記流路は、前記3つの耳部のいずれにも隣接しない前記流路よりも大きいサイズである、排除リング。 - 請求項3に記載の排除リングであって、
前記第1の基準面における前記流路の前記総断面積は、前記総リング底面面積の約16%~約20%の範囲である、
排除リング。 - 請求項7に記載の排除リングであって、
前記第1の基準面における前記流路の前記総断面積は、前記総リング底面面積の約23%~約28%の範囲である、排除リング。 - 請求項7に記載の排除リングであって、
前記第1の基準面における前記流路の前記総断面積は、前記総リング底面面積の約35%~約43%の範囲である、排除リング。 - 請求項1から9のいずれか一項に記載の排除リングであって、
前記流路の各々は、a)前記外側円周セグメントの前記底面におけるチャネル、およびb)前記外側円周セグメントを通る密閉通路からなる群から選択される、排除リング。 - 排除リングであって、
内側円周部と、
前記内側円周部と一体の外側円周部と、
複数の耳部と、前記耳部の各々は、前記排除リングの前記外側円周部から延び、
複数のフィンガと、を備え、前記フィンガの各々は、前記複数の耳部のそれぞれに取り付けられ、隣接する前記耳部の各ペアの間には少なくとも3つの流路が存在し、前記耳部の各々に隣接する前記流路は、前記耳部のいずれにも隣接しない前記流路よりも大きいサイズであり、
前記外側円周部は、前記内側円周部の第2の厚さよりも大きい第1の厚さを有し、前記外側円周部の底面は、プラズマ処理ツールに設置されたときに台座の上に載置されるように構成され、
前記内側円周部は、前記外側円周部の前記底面が前記プラズマ処理ツールの前記台座上に載っているときに前記台座から間隔を置いて配置されるように構成され、それによって前記台座と前記排除リングとの間にポケットを画定し、ウエハが存在する場合、前記ウエハのエッジが前記内側円周部の一部と前記台座との間に配置されることを可能にし、
前記外側円周部は、複数の流路を含み、各流路は、前記外側円周部の前記底面と前記内側円周部の底面との間にまたがる1つまたは複数の移行面から、前記外側円周部を通って、前記排除リングの外側周囲に延びて前記ポケットからのウエハエッジガスの排気を可能にする、
排除リング。 - 請求項11に記載の排除リングであって、
前記複数の耳部は、3つの耳部を含み、
前記3つの耳部は、前記排除リングの前記外側円周部の周りに実質的に等間隔に配置され、
前記複数の流路は、前記3つの耳部の各々の間に多数の流路を含む、
排除リング。 - 請求項12に記載の排除リングであって、
前記複数の流路は、前記ウエハエッジガスの約10%~約30%を前記ポケットから前記プラズマ処理ツールのチャンバ壁に向かって排気するように構成され、それにより前記ウエハエッジガスの残りは、前記ウエハが前記ポケット内に存在し、前記ウエハエッジガスが流れているときに前記ウエハの前記エッジに向かって誘導される、排除リング。 - 請求項12に記載の排除リングであって、
前記複数の流路は、前記ウエハエッジガスの約40%~約60%を前記ポケットから前記プラズマ処理ツールのチャンバ壁に向かって排気するように構成され、それにより前記ウエハエッジガスの残りは、前記ウエハが前記ポケット内に存在し、前記ウエハエッジガスが流れているときに前記ウエハの前記エッジに向かって誘導される、排除リング。 - 請求項12に記載の排除リングであって、
前記複数の流路は、前記ウエハエッジガスの約70%~約90%を前記ポケットから前記プラズマ処理ツールのチャンバ壁に向かって排気するように構成され、それにより前記ウエハエッジガスの残りは、前記ウエハが前記ポケット内に存在し、前記ウエハエッジガスが流れているときに前記ウエハの前記エッジに向かって誘導される、排除リング。 - 請求項11から15のいずれか一項に記載の排除リングであって、
前記流路の各々は、a)前記外側円周部の前記底面におけるチャネル、およびb)前記外側円周部を通る密閉通路からなる群から選択される、排除リング。 - プラズマ処理ツール内でウエハを処理する方法であって、
排除リングの外側円周部がチャンバの台座上に着座し、ウエハ用のポケットを画定するために前記排除リングの内側円周部が前記台座から間隔を置いて配置されるように、前記台座上に配置されている前記ウエハ上に前記排除リングを位置決めし、前記ウエハは前記内側円周部の一部の下に配置されているエッジを有し、
ウエハエッジガスの一部が前記ウエハに向かって誘導されるように、前記ウエハのプラズマ処理中に前記ウエハエッジガスを前記ポケットに流し、
前記ウエハエッジガスの一部を前記ポケットから前記チャンバの側壁に向け、前記排除リングの前記外側円周部を通って延びる複数の流路を通して排気すること
を備え、前記排除リングは中心軸を有し、前記中心軸に垂直であり、前記内側円周部の底面と前記外側円周部の底面との間に介在する第1の基準面における前記流路の総断面積は、前記排除リングの外側周囲と、前記外側円周部の前記底面と前記内側円周部の前記底面との間に及ぶ前記1つまたは複数の移行面に外接する基準円との間に画定される総リング底面面積の約16%~約20%の範囲、約23%~約28%の範囲または約35%~約43%の範囲である、方法。 - 請求項17に記載の方法であって、
前記複数の流路は、ある量のウエハエッジガスを前記ポケットから前記チャンバに向かって排気するように構成され、前記ウエハエッジガスの残りの部分は、前記ウエハに向かって誘導され、前記量は、前記ウエハエッジガスの約10%~約30%、前記ウエハエッジガスの約40%~60%、および前記ウエハエッジガスの約70%~約90%からなる群から選択される、方法。
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| USD997893S1 (en) * | 2021-09-28 | 2023-09-05 | Applied Materials, Inc. | Shadow ring lift plate |
| USD997894S1 (en) * | 2021-09-28 | 2023-09-05 | Applied Materials, Inc. | Shadow ring lift assembly |
| JP2025522636A (ja) * | 2022-07-08 | 2025-07-15 | ラム リサーチ コーポレーション | 基板処理システム用の改善された台座 |
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