JP7249746B2 - 物理的気相堆積チャンバの粒子低減装置及び方法 - Google Patents
物理的気相堆積チャンバの粒子低減装置及び方法 Download PDFInfo
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- H01J37/32—Gas-filled discharge tubes
- H01J37/34—Gas-filled discharge tubes operating with cathodic sputtering
- H01J37/3411—Constructional aspects of the reactor
- H01J37/345—Magnet arrangements in particular for cathodic sputtering apparatus
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- C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
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- C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
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- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
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Description
Claims (15)
- 物理的気相堆積チャンバであって、
前記物理的気相堆積チャンバ内部の内部容積を画定するチャンバ壁と、
スパッタリングターゲットを支持するように構成され、前記内部容積の上方区分に配置されたバッキング板と、
前記バッキング板の下で基板を支持する支持面を有する基板支持体と、
前記バッキング板と前記基板支持体との間の中心領域と、
前記中心領域を囲むシールドを含む処理キットであって、前記シールドが、内面、上部及び下部を有する円筒形本体を備える、処理キットと、
前記シールドの内面に位置づけされ、前記中心領域内にある第1の電極アセンブリと、
前記シールドの前記内面に位置づけされ、前記中心領域内にある磁石と
を備え、第1の電極アセンブリは、物理的気相堆積処理中に生成された不良を生じさせる粒子を横方向に変位させる電磁場を発生させるように位置づけ及び構成され、前記第1の電極アセンブリと前記磁石とは協働して、前記物理的気相堆積処理中に前記基板支持体上の基板に、不良を生じさせる前記粒子が接触するのを防止する、物理的気相堆積チャンバ。 - 前記磁石は、前記シールドの前記下部に位置づけされ、前記第1の電極アセンブリは、前記シールドの前記上部に位置づけされている、請求項1に記載の物理的気相堆積チャンバ。
- 前記シールドの内面且つ前記上部に位置づけされた第2の電極アセンブリと、前記第1の電極アセンブリと前記第2の電極アセンブリとに電圧を供給する電源とを更に備える、請求項2に記載の物理的気相堆積チャンバ。
- 前記第1の電極アセンブリと前記第2の電極アセンブリとは弓形である、請求項3に記載の物理的気相堆積チャンバ。
- 前記物理的気相堆積処理中に生成された粒子を横方向に変位させる電場を発生させるために、前記第1の電極アセンブリと前記第2の電極アセンブリとの間に所定の電圧差を選択的に生じさせるように構成されたコントローラを更に備える、請求項4に記載の物理的気相堆積チャンバ。
- 前記磁石は電磁石を含み、前記物理的気相堆積チャンバは、第2の電源と、前記物理的気相堆積処理中に生成された粒子を前記基板支持体から離れるように変位させる磁場を電磁石が発生させるように、電流を選択的に印加する第2のコントローラとを備える、請求項5に記載の物理的気相堆積チャンバ。
- 前記電磁石をカバーする磁石カバーを更に備える、請求項6に記載の物理的気相堆積チャンバ。
- 物理的気相堆積チャンバ内で基板を処理する方法であって、
チャンバ壁によって画定され、上方区分と下方区分とを含み、前記下方区分に基板支持体を含む前記物理的気相堆積チャンバの内部容積内部の前記基板支持体上に基板を配置することと、
上方区分内の前記基板支持体の上に位置する原料のターゲットから材料をスパッタリングすることであって、前記原料のターゲットと前記基板支持体との間に中心領域があり、処理キットが前記中心領域を囲むシールドを含み、前記シールドが内面、上部及び下部を有する円筒形本体を備え、磁石が前記シールドの前記下部の内面上に位置づけされ且つ前記中心領域内にある、スパッタリングすることと、
物理的気相堆積処理中に生成された不良を生じさせる粒子を横方向に変位させるために、前記シールドの前記上部の内面上に位置づけされた第1の電極アセンブリに電圧を印加し、前記第1の電極アセンブリと前記磁石とが協働して、前記物理的気相堆積処理中に前記基板支持体上の基板に、不良を生じさせる前記粒子が接触するのを防止することと
を含む方法。 - 前記シールドの内面且つ前記上部に位置づけされた第2の電極アセンブリがあり、前記第1の電極アセンブリと前記第2の電極アセンブリとに電圧を印加することを更に含む、請求項8に記載の方法。
- 前記物理的気相堆積処理中に生成された粒子を横方向に変位させる電場を発生させるために、前記第1の電極アセンブリと前記第2の電極アセンブリとの間に所定の電圧差を選択的に生じさせることを更に含む、請求項9に記載の方法。
- 前記磁石は電磁石を含み、前記物理的気相堆積処理中に生成された粒子を前記基板支持体から離れるように変位させる磁場を電磁石が発生させるように、電磁石に電流を選択的に印加することを更に含む、請求項10に記載の方法。
- 静的電磁場を発生させることを更に含む、請求項11に記載の方法。
- 動的電磁場を発生させることを更に含む、請求項11に記載の方法。
- 前記磁場及び前記電場を別々に調整することを更に含む、請求項11に記載の方法。
- EUVマスクブランクを形成することを含み、
前記原料のターゲットから材料をスパッタリングすることが、マルチカソード物理的気相堆積チャンバ内で前記基板上に複数層リフレクタ材料の交互層を堆積させることを含む、請求項8に記載の方法。
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