JP6797309B2 - 基板処理装置および基板処理方法 - Google Patents
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
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- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
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- H01L21/68714—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for supporting or gripping using mechanical means, e.g. chucks, clamps or pinches the wafers being placed on a susceptor, stage or support
- H01L21/68764—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for supporting or gripping using mechanical means, e.g. chucks, clamps or pinches the wafers being placed on a susceptor, stage or support characterised by a movable susceptor, stage or support, others than those only rotating on their own vertical axis, e.g. susceptors on a rotating caroussel
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- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
- H01L21/683—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for supporting or gripping
- H01L21/687—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for supporting or gripping using mechanical means, e.g. chucks, clamps or pinches
- H01L21/68714—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for supporting or gripping using mechanical means, e.g. chucks, clamps or pinches the wafers being placed on a susceptor, stage or support
- H01L21/68792—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for supporting or gripping using mechanical means, e.g. chucks, clamps or pinches the wafers being placed on a susceptor, stage or support characterised by the construction of the shaft
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Description
<1.基板処理システムの構成>
まず、第1の実施形態に係る基板処理システムの構成について図1を参照して説明する。
次に、処理ユニット16の構成について図2を参照して説明する。図2は、処理ユニット16の概略構成を示す図である。
次に、処理ユニット16において行われる液処理の内容について説明する。なお、液処理は、制御装置4の制御部18の制御に従って実行される。
配管部44のような導電性配管を処理液が流れると、流動電流と呼ばれる電流が発生する。流動電流とは、固体と液体との接触界面に生じる電気二重層のうち、液体側に存在する電荷が、液体の流れによって固体側の電荷から引き離されることで生じる電流のことである。
まず、流動電流の導通経路について図4を参照して説明する。図4は、流動電流の導通経路の構成を示す図である。
<6.1.異常検出>
制御部18は、測定部102による流動電流の測定結果に基づいて液処理の監視を行う。たとえば、制御部18は、測定部102から取得した流動電流の測定結果と、記憶部19に記憶されたレシピ情報191および流動電流情報192とに基づき、液処理の異常を検出することができる。
薬液処理中またはリンス処理中においては、放電が発生する場合がある。たとえば、ノズル41から吐出された薬液またはリンス液とウェハWとの電位差が大きい場合に、薬液またはリンス液がウェハWに接触した瞬間に放電が発生することがある。放電が発生すると、流動電流の値は、急激に変化する。そこで、制御部18は、かかる流動電流の急激な変化を検出することにより、放電の発生を検出することとしてもよい。この点について図7を参照して説明する。図7は、放電検出処理の説明図である。図7のグラフは、薬液処理またはリンス処理中における流動電流の時間変化の一例を示している。
制御部18は、測定部102による測定結果に基づき、処理液の置換が完了したタイミングを検出してもよい。この点について図8を参照して説明する。図8は、処理液の置換完了タイミングの検出処理の説明図である。図8のグラフは、薬液処理からリンス処理へ移行する際の流動電流の時間変化の一例を示している。
制御部18は、測定部102による測定結果に基づき、ウェハWの帯電量を推定することも可能である。この点について図9を参照して説明する。図9は、帯電量推定処理の説明図である。
次に、第2の実施形態に係る基板処理システムについて図10を参照して説明する。図10は、第2の実施形態に係る処理ユニットの構成を示す図である。なお、以下の説明では、既に説明した部分と同様の部分については、既に説明した部分と同一の符号を付し、重複する説明を省略する。
第3の実施形態では、イオナイザ110の具体的な構成について説明する。図11は、イオナイザ110の構成を示す図である。
第4の実施形態では、ウェハWの表面電位の測定方法について説明する。
1 基板処理システム
2 搬入出ステーション
3 処理ステーション
4 制御装置
16 処理ユニット
18 制御部
19 記憶部
101 配線
102 測定部
110 イオナイザ
191 レシピ情報
192 流動電流情報
Claims (10)
- 基板を保持して回転させる保持部、処理液を吐出するノズルおよび前記ノズルに前記処理液を供給する導電性の配管部を含む処理ユニットと、
前記保持部に保持されて回転する前記基板に対し、前記ノズルから前記処理液を供給することによって前記基板を処理する液処理を前記処理ユニットに対して実行させる制御部と、
前記配管部を前記処理液が流れることによって生じる流動電流を測定する測定部と
を備え、
前記制御部は、
前記測定部による測定結果に基づいて前記液処理を監視する、基板処理装置。 - 前記液処理の処理条件と流動電流の値とを関連づけた流動電流情報を記憶する記憶部
をさらに備え、
前記制御部は、
前記測定部による測定結果と前記流動電流情報とに基づき、前記液処理の異常を検出する、請求項1に記載の基板処理装置。 - 前記制御部は、
前記液処理の異常として、前記配管部の破断、前記基板の割れ、前記保持部の絶縁のうちの少なくとも1つを検出する、請求項2に記載の基板処理装置。 - 前記流動電流情報は、
前記液処理の処理条件として、前記処理液の種類を含み、
前記制御部は、
前記測定部による測定結果と前記流動電流情報とに基づき、前記処理液の濃度異常を検出する、請求項2または3に記載の基板処理装置。 - 前記流動電流情報は、
前記液処理の処理条件として、前記処理液の温度を含み、
前記制御部は、
前記測定部による測定結果と前記流動電流情報とに基づき、前記処理液の温度異常を検出する、請求項2〜4のいずれか一つに記載の基板処理装置。 - 前記制御部は、
前記測定部による測定結果に基づき、前記液処理中における放電の発生を検出する、請求項1〜5のいずれか一つに記載の基板処理装置。 - 前記制御部は、
前記測定部による測定結果に基づき、前記基板上の前記処理液が第1の処理液から第2の処理液へ置換したタイミングを検出する、請求項1〜6のいずれか一つに記載の基板処理装置。 - 前記ノズルを前記基板の径方向に沿って移動させる移動機構
を備え、
前記制御部は、
前記移動機構を用いて前記ノズルを前記基板の径方向に沿って移動させつつ、前記保持部に保持されて回転する前記基板に対し、前記ノズルから前記処理液を供給することによって前記基板を処理する前記液処理を前記処理ユニットに対して実行させ、前記測定部による測定結果に基づき、前記基板の径方向における帯電量の分布を推定する、請求項1〜7のいずれか一つに記載の基板処理装置。 - 前記流動電流の導通経路に対して前記流動電流と逆向きの電流を供給する電流供給部
をさらに備え、
前記制御部は、
前記測定部による測定結果に基づいて前記電流供給部の出力を制御する、請求項1〜8のいずれか一つに記載の基板処理装置。 - 基板を保持して回転させる保持部、処理液を吐出するノズルおよび前記ノズルに前記処理液を供給する導電性の配管部を含む処理ユニットに対し、前記保持部に保持されて回転する前記基板に対して前記ノズルから前記処理液を供給することによって前記基板を処理する液処理を実行させる制御工程と、
前記配管部を前記処理液が流れることによって生じる流動電流を測定する測定工程と、
前記測定工程における測定結果に基づいて前記液処理を監視する監視工程と
を含む、基板処理方法。
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PCT/JP2018/030547 WO2019044548A1 (ja) | 2017-08-29 | 2018-08-17 | 基板処理装置および基板処理方法 |
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