JP2020524398A - 基板処理装置及び真空回転電気コネクタ - Google Patents
基板処理装置及び真空回転電気コネクタ Download PDFInfo
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Abstract
Description
一般的に半導体メモリ素子、液晶表示装置、有機発光装置などは、基板上に複数回の半導体工程を行って、希望する形状の構造物を蒸着及び積層する加工工程を経て製造する。
スリップリング(Slipring)は、ロータリコネクタなどとも呼ばれる電気/機械的部品で、回転する装備に電源又は信号ラインを供給する際に電線がねじれることなく、伝達可能な一種の回転式コネクタである。
一つのチャンバ内で回転する複数の静電チャックにそれぞれ配置された基板を同時に処理するために、基板は公転と自転を同時に行い、前記基板は公転及び回転運動による遠心力に対して安定して固定されることが求められる。
本発明の一実施例による回転電気コネクタは、静電チャックを自転させつつ前記静電チャックに電気的連結を提供する。前記回転電気コネクタは、真空チャンバ内に配置された場合、寄生直流プラズマ放電を抑制するように対向して配置されたブラシを含む。前記回転電気コネクタは、スリップリングであり、正の電極リングと負の電極リングとの間に寄生放電を抑制する。
Claims (10)
- 中心軸から一定の半径上に周期的に配置される複数の静電チャックを含むディスクと、
前記ディスクを支えるディスク支持台と、
前記ディスク支持台を貫通して前記複数の静電チャックに電気的に連結されるDCラインと、
前記DCラインに電力を供給する電力供給源と、を含み、
前記DCラインは、
前記電力供給源で前記ディスク支持台を貫通する第1DCラインと、
前記第1DCラインを前記複数の静電チャックそれぞれに連結するために前記第1DCラインを分配する電力分配部と、
前記電力分配部で前記複数の静電チャックそれぞれに連結される複数の第2DCラインと、を含むことを特徴とする基板処理装置。 - 前記電力分配部は、
外側半径方向に突出した複数の第1連結端子を備え、正の電圧で帯電され、前記ディスクの上部面に配置される内側電力分配リングと、
内側半径方向に突出した第2連結端子を備え、負の電圧で帯電され、前記ディスクの上部面に配置される外側電力分配リングと、を含むことを特徴とする請求項1に記載の基板処理装置。 - 前記内側電力分配リングは、半径の一部が切断されたスナップリング形状であり、
前記外側電力分配リングは、半径の一部が切断されたスナップリング形状であり、
前記内側電力分配リングの切断部位と前記外側電力分配リングの切断部位は、互いに反対側に配置され、
前記第1DCラインは、第1正のDCライン及び第1負のDCラインを含み、
前記内側電力分配リングは、前記第1正のDCラインの一端と前記内側電力分配リングの切断部位の反対側とを連結する第1連結部位を含み、
前記外側電力分配リングは、前記第1負のDCラインの一端と前記外側電力分配リングの切断部位の反対側とを連結する第2連結部位を含むことを特徴とする請求項2に記載の基板処理装置。 - 前記電力分配部は、
前記第1連結端子に連結され、前記ディスクを貫通して延長される第1コンタクトプラグと、
前記第2連結端子に連結され、前記ディスクを貫通して延長される第2コンタクトプラグと、をさらに含み、
前記第2DCラインは、第2正のDCライン及び第2負のDCラインを含み、
前記第2正のDCラインの一端は、前記第1コンタクトプラグに連結され、
前記第2正のDCラインは、前記ディスクの下部面から延長され、
前記第2負のDCラインの一端は、前記第2コンタクトプラグに連結され、
前記第2負のDCラインは、前記ディスクの下部面から延長されることを特徴とする請求項3に記載の基板処理装置。 - 前記第2正のDCライン及び前記第2負のDCラインは、第1回転式コネクタ構造体に連結され、
前記第1コンタクトプラグと前記第2コンタクトプラグは、一定の半径上に一対を成すように配置されることを特徴とする請求項4に記載の基板処理装置。 - 前記電力分配部は絶縁体でコーティングされることを特徴とする請求項1に記載の基板処理装置。
- 前記電力分配部は、
前記ディスク上に配置され、前記内側電力分配リング及び前記外側電力分配リングを覆うように配置される上部カバーをさらに含み、
前記上部カバーは、円板形状であり、前記静電チャックが配置される位置で半円形状に陥没されることを特徴とする請求項2に記載の基板処理装置。 - 前記第2正のDCライン及び前記第2負のDCラインそれぞれはV字型に曲がることを特徴とする請求項4に記載の基板処理装置。
- 静電チャックを回転させる第1回転式コネクタ構造体内に挿入され、前記静電チャックを支持し、自転する自転板と、
前記自転板の下部面にそれぞれ固定されて前記自転板及び前記静電チャックに回転力を提供する第1磁気ギヤと、
前記ディスクの下部に配置されて前記チャンバに固定される第2磁気ギヤと、
前記ディスクに回転するように固定され、前記第1磁気ギヤと前記第2磁気ギヤとの間にそれぞれ配置されて回転比を調節する第3磁気ギヤと、を含み、
前記ディスクが公転するに従って前記第1磁気ギヤ及び前記第3磁気ギヤは自転することを特徴とする請求項1に記載の基板処理装置。 - 前記静電チャックは、
静電チャック本体と、
前記静電チャック本体の上部面で陥没された電極安着部と、
前記電極安着部を満たす絶縁部材と、
前記絶縁部材に埋没された一対の静電電極と、を含み、
前記第1回転式コネクタ構造体は、一対の静電電極に直流高電圧を印加することを特徴とする請求項1に記載の基板処理装置。
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CN110957243B (zh) * | 2018-09-27 | 2024-08-13 | 东京毅力科创株式会社 | 基板处理装置 |
CN113178374B (zh) * | 2021-04-21 | 2022-06-10 | 长鑫存储技术有限公司 | 半导体处理设备及其控制方法 |
CN113991380A (zh) * | 2021-10-25 | 2022-01-28 | 华北电力大学 | 一种主动抑制导电滑环深层充放电的方法和装置 |
CN115243495B (zh) * | 2022-06-29 | 2023-10-24 | 上海森桓新材料科技有限公司 | 一种半导体设备静电吸附盘保护装置 |
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WO2018230883A1 (ko) | 2018-12-20 |
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