JP2017130659A - 容量結合型プラズマ処理装置のエッジリングのrf振幅の制御 - Google Patents
容量結合型プラズマ処理装置のエッジリングのrf振幅の制御 Download PDFInfo
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Abstract
Description
本開示の態様は、概して、処理チャンバ内のエッジリングのRF振幅を制御するための装置及び方法に関する。
エッジリングは、処理チャンバ内で処理中に基板(例えば、半導体ウェハ)の周囲を囲む円形の部品である。エッジリングは処理チャンバ内でプラズマに曝露されるため、エッジリングは浸食し、所定の間隔の後に交換又は他の予防的保守を必要とする可能性がある。エッジリングがあまりにも浸食されると、基板のエッジのプラズマシースが低下し、基板のエッジでプラズマ処理特性が変化する。プラズマ処理特性の変化は、基板のエッジで望ましくない処理効果を引き起こし、したがって、基板のエッジ近くの使用可能な実面積を減少させる。
Claims (15)
- 基板を静電チャックにチャッキングするための1以上のチャッキング電極が内部に埋設された静電チャックと、
静電チャックの上に配置されたセラミックス層と、
セラミックス層の周りに配置されたセラミックスリングと、
セラミックスリング内に埋設された電極と、
1以上の伝送線を介して電極に結合された可変コンデンサとを含む基板支持体。 - セラミックスリング内に埋設された電極はリング形状である、請求項1記載の基板支持体。
- セラミックスリング上に接触して配置されたエッジリングを含み、セラミックスリング内に埋設された電極に隣接してセラミックスリングの上面とエッジリングの下面との間にギャップが残る、請求項1記載の基板支持体。
- 可変コンデンサはグランドに電気的に結合される、請求項1記載の基板支持体。
- 静電チャックとセラミックス層との間に配置されたヒーターを含む、請求項1記載の基板支持体。
- セラミックスリングは、二酸化ケイ素又は窒化ケイ素を含む、請求項1記載の基板支持体。
- 処理チャンバであって、
チャンバ本体と、
チャンバ本体上に配置された蓋と、
蓋の上方に配置された誘導結合プラズマ装置と、
チャンバ本体内に配置された基板支持体とを含み、基板支持体は、
基板を静電チャックにチャッキングするための1以上のチャッキング電極が内部に埋設された静電チャックと、
静電チャックの上に配置されたセラミックス層と、
セラミックス層の周りに配置されたセラミックスリングと、
セラミックスリング内に埋設され、1以上の伝送線を介して可変コンデンサに結合された電極とを含む処理チャンバ。 - セラミックスリング内に埋設された電極はリング形状である、請求項7記載の処理チャンバ。
- セラミックスリング上に接触して配置されたエッジリングを含み、セラミックスリング内に埋設された電極に隣接してセラミックスリングの上面とエッジリングの下面との間にギャップが残る、請求項7記載の処理チャンバ。
- 可変コンデンサはグランドに電気的に結合され、セラミックスリング内に埋設された電極は、幅が約3ミリメートル〜約20ミリメートルである、請求項7記載の処理チャンバ。
- 静電チャックとセラミックス層との間に配置されたヒーターを含み、セラミックスリングは、二酸化ケイ素又は窒化ケイ素を含む、請求項7記載の処理チャンバ。
- 1以上のチャッキング電極に結合されたバイアス源と、誘導結合プラズマ装置へのRF電源とを含む、請求項7記載の処理チャンバ。
- 1以上の伝送線は3本の伝送線であり、1以上の伝送線はセラミックスリング内に埋設された電極に等間隔に結合される、請求項7記載の処理チャンバ。
- プラズマシースを使用して基板の所定量を処理し、エッジリングの浸食を生じさせる工程と、
プラズマシースを再配置するために、浸食後にエッジリングでのRF電圧を増加させる工程と、
エッジリングの浸食を修正するために、RF電圧を増加させた後に追加の基板を処理する工程を含む基板を処理する方法。 - RF電圧を増加させる工程は、伝送線によって電極に結合された可変コンデンサを調整する工程を含み、可変コンデンサは電気的に接地され、電極はエッジリングの下に配置される、請求項14記載の方法。
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US201662286028P | 2016-01-22 | 2016-01-22 | |
US62/286,028 | 2016-01-22 | ||
US201662301316P | 2016-02-29 | 2016-02-29 | |
US62/301,316 | 2016-02-29 |
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JP2017005608A Active JP6953133B2 (ja) | 2016-01-22 | 2017-01-17 | 容量結合型プラズマ処理装置のエッジリングのrf振幅の制御 |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2021009932A (ja) * | 2019-07-01 | 2021-01-28 | 東京エレクトロン株式会社 | エッチング方法及びプラズマ処理装置 |
US11087958B2 (en) | 2018-06-15 | 2021-08-10 | Toshiba Memory Corporation | Restoration method for plasma processing apparatus |
KR20230089562A (ko) | 2021-12-13 | 2023-06-20 | 도쿄엘렉트론가부시키가이샤 | 플라스마 처리 장치 및 전위 제어 방법 |
JP7349832B2 (ja) | 2018-07-17 | 2023-09-25 | アプライド マテリアルズ インコーポレイテッド | セラミックハイブリッド絶縁プレート |
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CN106997842A (zh) | 2017-08-01 |
TW201737293A (zh) | 2017-10-16 |
JP6953133B2 (ja) | 2021-10-27 |
US20170213753A1 (en) | 2017-07-27 |
US10685862B2 (en) | 2020-06-16 |
TWI713078B (zh) | 2020-12-11 |
CN206758401U (zh) | 2017-12-15 |
CN106997842B (zh) | 2020-10-02 |
KR20170088309A (ko) | 2017-08-01 |
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JP3209624U (ja) | 2017-03-30 |
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