JPWO2018186451A1 - 基板処理装置および基板搬送方法 - Google Patents
基板処理装置および基板搬送方法 Download PDFInfo
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Abstract
Description
ところで、基板処理システム1では、ウェハWに対する上述した基板処理とは別に、様々なイベントが発生する場合がある。イベントとしては、たとえば、処理ユニット16のチャンバ20内を洗浄するチャンバ洗浄処理や、処理流体供給部40が備えるノズルから処理液を吐出するダミーディスペンス処理などがある。
たとえば、第1搬送装置13が未処理ウェハWを受渡部14に載置した後で、空き処理ユニット16に異常が発生してウェハWを処理することができなくなった場合、他の処理ユニット16に空きができるまで、未処理ウェハWが受渡部14に滞留することとなる。
上述した実施形態では、基板処理システム1の現在の状態が、予め決められた経路確保条件を満たしている場合に第1搬送装置13に対して「取出動作」の実行を指示することとした。
上述した実施形態では、第1搬送装置13が1枚のウェハWを保持可能なウェハ保持機構13aを用いてウェハWを1枚ずつ搬送する場合の例について説明したが、複数枚のウェハWを保持可能なウェハ保持機構を用いて複数のウェハWを一括して搬送してもよい。
1 基板処理システム
11 キャリア載置部
12 搬送部
12a 搬入出室
12b 受渡室
13 第1搬送装置
14 受渡部
15 搬送部
16 処理ユニット
18 制御部
Claims (10)
- 複数の基板を収容するキャリアを載置するキャリア載置部と、
複数の前記基板を載置可能な基板載置部と、
前記キャリア載置部に載置された前記キャリアと前記基板載置部との間で前記基板を搬送する第1搬送装置と、
前記基板を処理する複数の処理部と、
前記複数の処理部と前記基板載置部との間で前記基板を搬送する第2搬送装置と、
前記第1搬送装置、前記複数の処理部および前記第2搬送装置を制御する制御部と
を備え、
前記制御部は、
前記第1搬送装置が前記キャリアから前記基板を取り出して前記基板載置部へ載置し且つ前記基板載置部から前記基板を取り出して前記キャリアへ収容するまでの所要時間以上の時間間隔で、前記第1搬送装置に対し、前記キャリアから前記基板を取り出して前記基板載置部へ載置する取出動作を実行させること
を特徴とする基板処理装置。 - 前記制御部は、
前回の前記取出動作からの経過時間が、前記所要時間以上の時間として予め設定された閾値に達したか否を判定し、前記閾値に達したと判定した場合に、前記第1搬送装置に対して前記取出動作を実行させること
を特徴とする請求項1に記載の基板処理装置。 - 前記制御部は、
前記キャリアから前記処理部に至るまでの前記基板の搬送経路が確保されているか否かをさらに判定し、前回の前記取出動作からの経過時間が前記閾値に達しており、且つ、前記搬送経路が確保されていると判定した場合に、前記第1搬送装置に対して前記取出動作を実行させること
を特徴とする請求項2に記載の基板処理装置。 - 前記制御部は、
前記基板載置部に前記基板を収容可能な空きスロットが存在すること、前記第2搬送装置が前記基板を保持していないこと、および、前記複数の処理部のうち前記基板を収容していない空き処理部が存在することを含む経路確保条件が満たされている場合に、前記搬送経路が確保されていると判定すること
を特徴とする請求項3に記載の基板処理装置。 - 前記経路確保条件は、
前記第1搬送装置が前記基板を保持していないことをさらに含むこと
を特徴とする請求項4に記載の基板処理装置。 - 前記経路確保条件は、
前記空き処理部の処理開始準備が整っていることをさらに含むこと
を特徴とする請求項4に記載の基板処理装置。 - 前記制御部は、
前記処理部によって処理された後の前記基板である処理済基板を収容可能な空きスロットが前記基板載置部に存在することを含む経路確保条件が満たされている場合に、前記搬送経路が確保されていると判定すること
を特徴とする請求項3に記載の基板処理装置。 - 前記制御部は、
複数の前記基板を処理対象とする一の処理単位の実行中に、特定のイベントの発生条件が成立した場合に、前記一の処理単位の実行が終了し、他の処理単位の実行が開始される前に、前記イベントを実行すること
を特徴とする請求項1〜7のいずれか一つに記載の基板処理装置。 - 前記制御部は、
前回の前記取出動作からの経過時間が前記閾値に達したと判定した後、前記キャリアから前記処理部に至る前記基板の搬送経路が確保されることが予想される時刻よりも前記取出動作に要する時間以下の時間だけ前に、前記第1搬送装置に対して前記取出動作を実行させること
を特徴とする請求項2に記載の基板処理装置。 - 複数の基板を収容可能なキャリアを載置するキャリア載置部に載置された前記キャリアと複数の前記基板を載置可能な基板載置部との間で前記基板を搬送する第1搬送装置を用い、前記キャリアから前記基板を取り出して前記基板載置部へ載置し且つ前記基板載置部から前記基板を取り出して前記キャリアへ収容するまでの所要時間以上の時間間隔で、前記キャリアから前記基板を取り出して前記基板載置部へ載置する取出工程と、
前記基板を処理する複数の処理部と前記基板載置部との間で前記基板を搬送する第2搬送装置を用い、前記基板載置部から前記基板を取り出して前記処理部へ搬入する搬入工程と
を含むことを特徴とする基板搬送方法。
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