JP7320369B2 - 基板処理装置 - Google Patents
基板処理装置 Download PDFInfo
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- JP7320369B2 JP7320369B2 JP2019078803A JP2019078803A JP7320369B2 JP 7320369 B2 JP7320369 B2 JP 7320369B2 JP 2019078803 A JP2019078803 A JP 2019078803A JP 2019078803 A JP2019078803 A JP 2019078803A JP 7320369 B2 JP7320369 B2 JP 7320369B2
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Description
[1] 複数枚の基板を多段に収納するカセットと、
前記カセットを密閉可能に収納するチャンバと、
前記カセットを前記チャンバ内で昇降させる昇降機構と、
前記基板を前記カセットに対して搬出入する搬送ロボットと、
前記昇降機構及び前記搬送ロボットの動作を制御する制御部と、を備え、
前記チャンバの側面部には、前記基板を前記カセットに搬出入する際に開口する搬出入口が設けられ、
前記搬送ロボットには、前記基板が載置されるロボットアームが備えられ、
前記ロボットアームは、水平方向に移動することによって前記チャンバの外部から前記搬出入口を通じて前記カセット内に挿入可能とされ、かつ、前記カセット内において上昇または下降が可能とされ、
前記制御部は、前記カセット内において前記ロボットアームを下降させる際に前記昇降機構によって前記カセットを上昇させ、前記カセット内において前記ロボットアームを上昇させる際に前記昇降機構によって前記カセットを下降させることを特徴とする基板処理装置。
[2] 前記カセットから前記基板を搬出する動作として、前記制御部は、前記チャンバの前記搬出入口から前記ロボットアームを前記カセット内に挿入させ、次いで、前記ロボットアームを上昇させて前記基板を下から持ち上げる際に前記昇降機構によって前記カセットを下降させ、次いで、前記ロボットアームを前記カセットから引き抜かせることを特徴とする[1]に記載の基板処理装置。
[3] 前記カセットに前記基板を搬入する動作として、前記制御部は、前記チャンバの前記搬出入口から、前記基板を保持した前記ロボットアームを前記カセット内に挿入させ、次いで、前記ロボットアームを下降させる際に前記昇降機構によって前記カセットを上昇させて前記基板を前記カセット内に載置し、次いで、前記ロボットアームを下降させて前記基板を前記カセット内に載置するとともに、前記昇降機構によって前記カセットを上昇させ、次いで、前記ロボットアームを前記カセットから引き抜かせることを特徴とする[1]に記載の基板処理装置。
[4] 前記制御部は、前記ロボットアームが上昇または下降させる際に、前記カセットが前記ロボットアームの動く方向とは逆方向に動かすことによって、前記カセット内における前記ロボットアームの上昇時の変位量または下降時の変位量を小さくさせる、[1]乃至[3]の何れか一項に記載の基板処理装置。
図1は、本実施形態における基板処理装置を示す模式平面図であり、図において、符号1は基板処理装置である。
例えば、チャンバ10~10Eのうち1箇所は、基板を出し入れするロード/アンロード室とすることができる。
なお、トランスファチャンバ2には、搬送ロボット2aを複数設置することもできる。
さらに、トランスファチャンバ2は、多角形であればよく、三角形から八角形程度まで、任意の平面形状とすることができる。
この場合、チャンバ10に排気手段を設ける必要がなくなりコスト低減できる。また、チャンバ10からトランスファチャンバ2に流出した高温の窒素ガスは、搬送ロボット2aに到達する前に排気口から排出されるので、高温の窒素ガスによる搬送ロボットへの悪影響を防止することができる。
チャンバ10における処理は熱処理に限定されない。また、チャンバ10A~10Eは、チャンバ10と同じ処理を施す同じ構成としてもよいし、異なる処理を施す処理室として異なる構成とすることもできる。チャンバ10と異なる処理としては、成膜、エッチング、洗浄等を挙げることができる。
チャンバ10は、図1及び図2に示すように、平面視して略矩形断面を有するとともに、鉛直方向の断面形状が略矩形とされている。チャンバ10は、密閉可能とされている。
シャッタ15a,16aは、いずれもシャッタ駆動部15b,16bによって開閉可能とされている。
カセット20は、図2に示すように、略矩形の支持部21が上下方向に複数設けられる。複数の支持部21は、ほぼ等しい輪郭形状を有する。複数の支持部21は、互いに上下方向に離間して配置される。
支持柱22は、上下方向における複数の支持部21間の離間を維持可能であれば、この構成に限るものではない。
昇降軸23は中空状とされる。昇降軸23の内部には、支持部21に備えられたヒータと、チャンバ10外部に設けられたヒータ電源とを接続する複数本のヒータ線が全て通される。
昇降駆動部30は、カセット20をチャンバ10内で昇降させる。昇降駆動部30は、昇降軸23の下端を支持する昇降支持部31と、昇降支持部31を上下方向に位置規制して昇降するボールネジ32,32と、ボールネジ32を回転駆動する昇降回転部33と、を有する。
昇降回転部33によってボールネジ32を回転することで、昇降支持部31が上下方向に位置規制した状態で昇降する。これにより、昇降駆動部30が昇降軸23を昇降する。
昇降駆動部30と昇降軸23とは、昇降機構を構成している。
この場合、図2に示すように、最下段となる支持部21は、搬出入口16に対応する高さ位置となる。同時に、下から4段目、上から3段目となる支持部21は、搬出入口15に対応する高さ位置となる。
この場合、上から5段目、下から2段目となる支持部21は、搬出入口16に対応する高さ位置となる。同時に、下から5段目、上から2段目となる支持部21は、搬出入口15に対応する高さ位置となる。
この場合、上から4段目、下から3段目となる支持部21は、搬出入口16に対応する高さ位置となる。同時に、最上段となる支持部21は、搬出入口15に対応する高さ位置となる。
したがって、チャンバ10の高さ寸法は、チャンバ10内でカセット20を上下方向に移動可能とする空間高さに規定される。
本実施形態では、複数の搬出入口15,16において、その高さ位置を上述するように設定したことで、チャンバ10の高さ寸法を小さくできる。
本実施形態の基板処理装置1では、上述のように、ロボットアーム2bが、水平方向に移動して搬出入口15、16からチャンバ10内に挿入可能とされ、かつ、カセット20内において上昇または下降が可能とされている。また、制御部100は、搬送ロボット2a及び昇降駆動部30の動作を制御することができるようになっている。具体的には、制御部100は、カセット20内においてロボットアーム2bを下降させる場合は昇降機構によってカセット20を上昇させ、カセット20内においてロボットアーム2bを上昇させる場合は昇降機構によってカセット20を下降させる。
まず、図4(a)に示すように、制御部100の指令に基づき、搬出入口15からロボットアーム2bを基板Kとともにチャンバ10のカセット20内に挿入させる。ロボットアーム2bは、カセット20内の支持部21の上方の空間であって、基板Kの設置予定位置よりも上側の位置に向けて水平方向から挿入させる。
Claims (4)
- 複数枚の基板を多段に収納するカセットと、
前記カセットを密閉可能に収納するチャンバと、
前記カセットを前記チャンバ内で昇降させる昇降機構と、
前記基板を前記カセットに対して搬出入する搬送ロボットと、
前記昇降機構及び前記搬送ロボットの動作を制御する制御部と、を備え、
前記チャンバの側面部には、前記基板を前記カセットに搬出入する際に開口する搬出入口が設けられ、
前記搬送ロボットには、前記基板が載置されるロボットアームが備えられ、
前記ロボットアームは、水平方向に移動することによって前記チャンバの外部から前記搬出入口を通じて前記カセット内に挿入可能とされ、かつ、前記カセット内において上昇または下降が可能とされ、
前記制御部は、前記カセット内において前記ロボットアームを下降させる際に前記昇降機構によって前記カセットを上昇させ、前記カセット内において前記ロボットアームを上昇させる際に前記昇降機構によって前記カセットを下降させることを特徴とする基板処理装置。 - 前記カセットから前記基板を搬出する動作として、前記制御部は、前記チャンバの前記搬出入口から前記ロボットアームを前記カセット内に挿入させ、次いで、前記ロボットアームを上昇させて前記基板を下から持ち上げる際に前記昇降機構によって前記カセットを下降させ、次いで、前記ロボットアームを前記カセットから引き抜かせることを特徴とする請求項1に記載の基板処理装置。
- 前記カセットに前記基板を搬入する動作として、前記制御部は、前記チャンバの前記搬出入口から、前記基板を保持した前記ロボットアームを前記カセット内に挿入させ、次いで、前記ロボットアームを下降させる際に前記昇降機構によって前記カセットを上昇させて前記基板を前記カセット内に載置し、次いで、前記ロボットアームを前記カセットから引き抜か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、前記ロボットアームが上昇または下降させる際に、前記カセットが前記ロボットアームの動く方向とは逆方向に動かすことによって、前記カセット内における前記ロボットアームの上昇時の変位量または下降時の変位量を小さくさせる、請求項1乃至請求項3の何れか一項に記載の基板処理装置。
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