JP2019140210A - 基板処理装置および基板処理方法 - Google Patents
基板処理装置および基板処理方法 Download PDFInfo
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Abstract
Description
図1は、第1実施形態の基板処理装置1を示す概略側面図である。図2は、第1実施形態のスピンベース21上面を示す概略平面図である。基板処理装置1は、チャンバ壁11に囲まれた処理室10を備えている。処理室10は、基板を回転可能に保持するスピンチャック2を備える。チャンバ壁11の側面には、開口を開閉可能なシャッタ部110が設けられている。不図示の搬送機構がシャッタ部110の開口を介して、チャンバ壁11の内部にアクセスする。
本実施形態の基板保持部3は、合計4つの保持ピン(各2つの可動保持ピン30、固定保持ピン35)であり、基板Wの周端部を4箇所で保持する。ただし、保持ピンの合計数量は、これに限定されるものではない。基板保持部3は、1つ以上の可動保持ピン30と1つ以上の固定保持ピン35、もしくは、2つ以上の可動保持ピン30を備えていることが望ましい。保持ピンの数量が5つ以上となると、一部の保持ピンが基板Wの保持に寄与しない場合が起こり得る。この場合、その保持に寄与しない一部の保持ピンと基板Wの周端部との間に隙間が形成されるため、その隙間を通じて、処理液が基板Wの下面側に回り込み、下面が汚染される虞がある。このような観点から、保持ピンの数量は、4つ以下であることが望ましい。
図3は、第1実施形態の可動保持ピン30を示す概略側面図である。図3においては、基板Wを保持した状態の可動保持ピン30を実線で示しており、基板Wの保持を解除した状態の可動保持ピン30を破線で示している。
図4は、第1実施形態の固定保持ピン35示す概略側面図である。固定保持ピン35は、土台部36と当接部37(第2当接部)とを有する。土台部36はスピンベース21の上面に固定されており、当接部37は土台部36の上部に設けられている。当接部37は、基板Wの周端部に当接される当接面37Sを備えている。当接面37Sは、鉛直方向に平行である。
図5は、第1実施形態の支持ピン40を示す概略側面図である。図5においては、基板保持部3に支持された基板Wを実線で示している。図6は、第1実施形態の支持ピン40を示す概略平面図である。
制御部5は、基板処理装置1の各駆動部など(例えば、スピンモータ22、移動部33など)を制御する。制御部5のハードウェアとしての構成は、一般的なコンピュータと同様である。すなわち、制御部5は、各種演算処理を行うCPU、基本プログラムを記憶する読み出し専用のメモリであるROM、各種情報を記憶する読み書き自在のメモリであるRAM、及び、制御用アプリケーションまたはデータ等を記憶する記憶部を備えている。
図7は、第1実施形態の基板処理装置1の動作を示す流れ図である。以下に説明する基板処理装置1の各動作は、制御部5の制御下で行われるものとする。
次に、第2実施形態について説明する。なお、以降の説明において、既に説明した基板処理装置1の構成要素と同様の機能を有する要素については、同じ符号又はアルファベット文字を追加した符号を付して、詳細な説明を省略する場合がある。
図9は、第3実施形態の支持ピン40aを示す概略側面図ある。第1実施形態の支持ピン40は、上部に傾斜面40Sを有しており、当該傾斜面40Sで基板Wを支持する。これに対して、第3実施形態の支持ピン40aは、傾斜面40Sを有さず、上部が水平面に平行な平坦面40Saを有する。そして、基板保持部3が基板Wを保持した状態では、平坦面40Saに基板Wの下面が接触することによって、基板Wが支持ピン40aに支持された状態となる。
図10は、第4実施形態の支持ピン40bを示す概略側面図である。第1実施形態の支持ピン40は、上部に傾斜面40Sを有しており、当該傾斜面40Sで基板Wを支持する。これに対して、第4実施形態の支持ピン40bの上部は、回転軸線Q1から離れる方向に向かって、スピンベース21からの高さが一段階だけ高くなる段差を有している。より詳細には、支持ピン40bは、その上部における回転軸線Q1に近い側に水平面に平行な平坦面40Sbを有する。また、支持ピン40bは、その上部における回転軸線Q1から遠い側に平坦面40Sbより上方に突出する凸部440を有する。
上記実施形態では、支持部材である支持ピン40,40a,40bが、基板保持部3に保持された基板Wの周縁部よりも平面視において外側にはみ出すように配置されている。しかしながら、支持部材は基板保持部3に保持された基板Wからはみ出さず、基板Wの内側に配置されていてもよい。
15 処理液ノズル
16 ガスノズル
17 ブラシ
2 スピンチャック
21 スピンベース
22 スピンモータ
3 基板保持部
30 可動保持ピン
32 当接部
32S 当接面
33 移動部
35 固定保持ピン
37 当接部
37S 当接面
4 基板支持部
40,40a,40b 支持ピン
40S 傾斜面
40Sa,40Sb 平坦面
40T,40Ta,40Tb 上端
42,42a,42b 内側部分
44,44a 外側部分
5 制御部
Q1 回転軸線
W 基板
W3,W3a,W3b 重複部分
Claims (18)
- 基板を処理する基板処理装置であって、
スピンベースと、
前記スピンベースを鉛直方向に沿う回転軸線まわりに回転させる回転駆動部と、
前記スピンベースに設けられ、基板を保持する基板保持部と、
前記スピンベースに設けられ、前記基板保持部が保持する前記基板の下方に配されて当該基板と前記鉛直方向に重なる内側部分を有する基板支持部と、
前記基板保持部が保持する前記基板の上面に処理液を供給する処理液供給部と、
を備え、
前記基板支持部の上端が、前記基板保持部が保持する前記基板のうち前記内側部分と前記鉛直方向に重なる重複部分の上面よりも下側にある、基板処理装置。 - 請求項1の基板処理装置であって、
前記基板保持部は、
前記基板の周端部における複数の箇所に当接して当該基板を保持する、基板処理装置。 - 請求項1または請求項2の基板処理装置であって、
前記基板保持部は、
前記回転軸線に接離する接離方向に移動可能な可動保持部と、
前記スピンベースに固定されている固定保持部と、
を含む、基板処理装置。 - 請求項3の基板処理装置であって、
前記可動保持部は、
前記接離方向に移動可能であり、かつ、前記基板の周縁部に当接する1つまたは2つの可動保持部材を含む、基板処理装置。 - 請求項3または請求項4の基板処理装置であって、
前記固定保持部は、
前記スピンベースに固定されており、前記基板の周縁部に当接する1つまたは2つの固定保持部材を含む、基板処理装置。 - 請求項1から請求項5のいずれか1項の基板処理装置であって、
前記基板支持部は、
前記回転軸線から離れる方向に向かって、前記鉛直方向の上側へ傾く傾斜面を有する、基板処理装置。 - 請求項1から請求項6のいずれか1項の基板処理装置であって、
前記基板支持部は、
前記基板の周端部からはみ出す外側部分を有する、基板処理装置。 - 請求項1から請求項7のいずれか1項の基板処理装置であって、
前記基板保持部が保持する前記基板の上面を物理洗浄する物理洗浄部、
をさらに備える、基板処理装置。 - 請求項1から請求項8のいずれか1項の基板処理装置であって、
前記基板支持部は、
前記スピンベースに設けられ、前記基板の異なる部分を支持する複数の支持部材を含む、基板処理装置。 - 基板を処理する基板処理方法であって、
(a)スピンベースに設けられた基板保持部が基板を保持する工程と、
(b)前記工程(a)にて前記基板保持部が保持する前記基板を、前記スピンベースに設けられた基板支持部が支持する工程と、
(c)前記スピンベースを鉛直方向に沿う回転軸線まわりに回転させることにより、前記基板を回転させる工程と、
を含み、
(d)前記工程(c)にて回転する前記基板の上面に処理液を供給する工程と、
を含み、
前記基板支持部は、前記工程(a)により前記基板保持部に保持された前記基板と前記鉛直方向に重なる内側部分を有し、
前記基板支持部の上端が、前記基板保持部が保持する前記基板のうち前記内側部分と前記鉛直方向に重なる重複部分の上面よりも下側にある、基板処理方法。 - 請求項10の基板処理方法であって、
前記基板保持部は、
前記基板の周端部における複数の箇所に当接して当該基板を保持する、基板処理方法。 - 請求項10または請求項11の基板処理方法であって、
前記基板保持部は、
前記回転軸線に接離する接離方向に移動可能な可動保持部と、
前記スピンベースに固定されている固定保持部と、
を含み、
前記工程(a)は、
前記可動保持部を前記接離方向に移動させることにより、前記可動保持部および前記固定保持部で前記基板を保持する工程である、基板処理方法。 - 請求項12の基板処理方法であって、
前記可動保持部は、前記接離方向に移動可能であり、かつ、前記基板の周縁部の異なる部分に当接する第1当接部を有する複数の可動保持部材を含み、
前記工程(a)は、
前記複数の可動保持部材を前記接離方向に移動させることにより、前記複数の可動保持部材および前記固定保持部で前記基板を保持する工程である、基板処理方法。 - 請求項12または請求項13の基板処理方法であって、
前記固定保持部は、
前記スピンベースに固定されており、前記基板の周縁部の異なる部分に当接する第2当接部を有する複数の固定保持部材を含み、
前記工程(a)は、
前記可動保持部および前記複数の固定保持部材で前記基板を保持する工程である、基板処理方法。 - 請求項10から請求項14のいずれか1項の基板処理方法であって、
前記基板支持部は、
前記回転軸線から離れる方向に向かって、前記鉛直方向の上側へ傾く傾斜面を有する、基板処理方法。 - 請求項10から請求項15のいずれか1項の基板処理方法であって、
前記基板支持部は、
前記基板の周端部からはみ出す外側部分を有する、基板処理方法。 - 請求項10から請求項16のいずれか1項の基板処理方法であって、
(e)前記工程(d)にて前記処理液が供給された基板の表面を物理洗浄する工程、
をさらに含む、基板処理方法。 - 請求項10から請求項17のいずれか1項の基板処理方法であって、
前記基板支持部は、
前記スピンベースに設けられており、前記基板の異なる部分を支持する複数の支持部材を含み、
前記工程(b)は、
前記工程(a)にて、前記基板保持部に保持された前記基板を、前記複数の支持部材で支持する、基板処理方法。
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