JP2018157028A - 成膜装置、成膜方法及び記憶媒体 - Google Patents
成膜装置、成膜方法及び記憶媒体 Download PDFInfo
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Abstract
【解決手段】反応容器11内における基板Wの保持領域の後方に設けられた、前記成膜ガスを吐出する成膜ガス吐出部41と、基板Wの保持領域の前方に設けられた、成膜ガスを排気する排気口15と、基板保持具21を縦軸の周りに回転させるための回転機構34と、成膜ガス吐出部41から吐出される成膜ガスの温度よりも反応容器11内を低い温度に加熱する加熱部24と、を備える装置を構成する。成膜ガス吐出部41において、第1の吐出口43は吐出された成膜ガスが反応容器11内のガス降温用部材に衝突して降温されるように、第2の吐出口42は吐出された成膜ガスがガス降温用部材に衝突しないように、夫々異なる向きで開口する。
【選択図】図1
Description
前記反応容器内における前記基板の保持領域の後方に設けられた、前記成膜ガスを吐出する成膜ガス吐出部と、
前記基板の保持領域の前方に設けられた、前記成膜ガスを排気する排気口と、
前記基板保持具を縦軸の周りに回転させるための回転機構と、
前記成膜ガス吐出部から吐出される前記成膜ガスの温度よりも前記反応容器内を低い温度に加熱する加熱部と、
吐出された前記成膜ガスが前記基板に供給される前に前記反応容器内におけるガス降温用部材に衝突して降温されるように、前記成膜ガス吐出部において当該ガス降温用部材に向けて横方向に開口した第1のガス吐出口と、
吐出された前記成膜ガスが前記基板に供給される前に前記ガス降温用部材に衝突しないように、前記成膜ガス吐出部において前記第1のガス吐出口とは異なる向きで前方に向けて開口した第2のガス吐出口と、
を備えることを特徴とする。
前記反応容器内における前記基板の保持領域の後方に設けられた成膜ガス吐出部から前記成膜ガスを吐出する工程と、
前記基板の保持領域の前方に設けられた排気口から前記成膜ガスを排気する工程と、
回転機構により前記基板保持具を縦軸の周りに回転させる工程と、
加熱部により、前記成膜ガス吐出部から吐出される前記成膜ガスの温度よりも前記反応容器内を低い温度に加熱する工程と、
前記成膜ガス吐出部において前記反応容器内のガス降温用部材に向けて横方向に開口した第1のガス吐出口から前記成膜ガスを、前記基板に供給される前にガス降温用部材に衝突させて降温されるように吐出する工程と、
前記成膜ガス吐出部において前記第1のガス吐出口とは異なる向きで前方に向けて開口した第2のガス吐出口から前記成膜ガスを、前記基板に供給される前に前記ガス降温用部材に衝突しないように吐出する工程と、
を備えることを特徴とする。
前記コンピュータプログラムは、本発明の成膜方法を実行するようにステップ群が組まれていることを特徴とする。
この例では一つおきの前方ガス吐出口42と同じ高さに後方ガス吐出口43が位置しており、後方ガス吐出口43の数は、前方ガス吐出口42の数の1/2である。また、第1の開口方向と前方ガス吐出口42との開口方向とのなす角は180°であり、前方ガス吐出口42の口径と、後方ガス吐出口43の口径とは互いに等しい。従って、ガスインジェクタ41において、前方側の開口率と後方側の開口率とが互いに異なっている。つまり、ガスインジェクタ41を前方から見たときの各前方ガス吐出口42の面積の合計と、ガスインジェクタ41を後方から見たときの各後方ガス吐出口43の面積の合計とが互いに異なっている。
本発明に関連して行われた評価試験について、以下に説明する。
評価試験1
後方ガス吐出口43が設けられていないことを除いては、上記の図1、図2で示した成膜装置1と同様の構成の成膜装置を用いて、発明の実施形態で説明した手順に沿ってウエハWに成膜処理を行った。つまり図6で示すガスインジェクタ41を用いて、上記の手順で成膜処理を行った。ただし、成膜ガスの吐出中、ウエハWの回転は行わなかった。これを評価試験1−1とする。一方、成膜ガスの吐出中にウエハWの回転を行ったことを除いては評価試験1−1における成膜処理と同様の処理条件による成膜処理を行った。これを評価試験1−2とする。これら評価試験1−1、1−2において、成膜処理後のウエハWの面内における膜厚分布を調べた。
前方ガス吐出口42が設けられていないことを除いては、上記の図1、図2で示した成膜装置1と同様の構成の成膜装置を用いて、発明の実施形態で説明した手順に沿ってウエハWに成膜処理を行った。つまり図7で示すガスインジェクタ41を用いて、上記の手順で成膜処理を行った。ただし、成膜ガスの吐出中、ウエハWの回転は行わなかった。これを評価試験2−1とする。一方、成膜ガスの吐出中にウエハWの回転を行ったことを除いては評価試験2−1における成膜処理と同様の処理条件による成膜処理を行った。これを評価試験2−2とする。これら評価試験2−1、2−2において、成膜処理後のウエハWの面内における膜厚分布を調べた。
上記の図1、図2で示した成膜装置1を用いて、発明の実施形態で説明した手順に沿ってウエハWに成膜処理を行った。ただし、ガスインジェクタとしては図9で説明したガスインジェクタ40及び図3でガスインジェクタ41のうちの1つを選択して使用した。ガスインジェクタ40を使用して成膜処理を行った試験を評価試験3−1、ガスインジェクタ41を使用して成膜処理を行った試験を評価試験3−2とする。評価試験3−1、3−2について、成膜処理後のウエハWの面内における膜厚分布を調べた。
評価試験3の結果に基づいて、シミュレーションによりウエハWの面内の膜厚の均一性が高くなるように前方ガス吐出口42の数と、後方ガス吐出口43の数とを調整し、ウエハWに成膜処理を行ったときの膜厚分布を取得した。その結果、ウエハWの面内における膜厚の最大値と最小値との差は1.2nmであった。評価試験1−1において膜厚の最大値と最小値との差は2.0nmであるため、この評価試験4の方が膜厚の最大値と最小値との差が小さい。従って、この評価試験4からは、前方ガス吐出口42及び後方ガス吐出口43を形成することでウエハWの面内における膜厚の均一性を高くすることができることが確認された。
1 成膜装置
10 制御部
11 反応容器
13 内管
15 排気口
21 ウエハボート
24 ヒーター
34 回転機構
41 ガスインジェクタ
42 前方ガス吐出口
43 後方ガス吐出口
51、55 気化部
Claims (10)
- 真空雰囲気が形成される縦型の反応容器内にて、基板保持具に棚状に保持された複数の基板に成膜ガスを供給して成膜する成膜装置において、
前記反応容器内における前記基板の保持領域の後方に設けられた、前記成膜ガスを吐出する成膜ガス吐出部と、
前記基板の保持領域の前方に設けられた、前記成膜ガスを排気する排気口と、
前記基板保持具を縦軸の周りに回転させるための回転機構と、
前記成膜ガス吐出部から吐出される前記成膜ガスの温度よりも前記反応容器内を低い温度に加熱する加熱部と、
吐出された前記成膜ガスが前記基板に供給される前に前記反応容器内におけるガス降温用部材に衝突して降温されるように、前記成膜ガス吐出部において当該ガス降温用部材に向けて横方向に開口した第1のガス吐出口と、
吐出された前記成膜ガスが前記基板に供給される前に前記ガス降温用部材に衝突しないように、前記成膜ガス吐出部において前記第1のガス吐出口とは異なる向きで前方に向けて開口した第2のガス吐出口と、
を備えることを特徴とする成膜装置。 - 前記ガス降温用部材は前記反応容器の側壁であることを特徴とする請求項1記載の成膜装置。
- 前記保持領域における前記基板の後端と前記反応容器の側壁との距離は、当該保持領域における基板の前端と当該反応容器の側壁との距離よりも大きいことを特徴とする請求項1または2記載の成膜装置。
- 前記反応容器の後方の側壁には、外方に向けて膨らむ凸部が縦方向に沿って設けられ、当該凸部内における前記成膜ガスの拡散領域に前記成膜ガス吐出部が設けられることを特徴とする請求項3記載の成膜装置。
- 前記第1のガス吐出口は、後方に向けて開口することを特徴とする請求項1ないし4のいずれか一つに記載の成膜装置。
- 前記第1のガス吐出口及び第2のガス吐出口は、各々上下方向に複数設けられ、互いに開口率が異なるように形成されることを特徴とする請求項1ないし5のいずれか一つに記載の成膜装置。
- 前記反応容器の外部で成膜原料を気化させて第1の成膜ガスを生成するための気化部と、
前記第1の成膜ガスを前記気化部から前記成膜ガス吐出部に導入する導入路と、
が設けられ、
当該第1の成膜ガスを前記成膜ガス吐出部から吐出するときにおける前記気化部から前記成膜ガス吐出部に至るまでの前記第1の成膜ガスの流路の温度は、前記反応容器内の温度よりも高い温度とされることを特徴とする請求項1ないし6のいずれか一つに記載の成膜装置。 - 前記成膜ガス吐出部は第1のモノマーを含む前記第1の成膜ガスと、第2のモノマーを含む第2の成膜ガスとを、前記第1のガス吐出口、前記第2のガス吐出口から各々吐出し、
前記第1のモノマー及び第2のモノマーは前記基板の表面で重合して高分子膜を形成するための成膜原料であることを特徴とする請求項7記載の成膜装置。 - 真空雰囲気が形成される縦型の反応容器内にて、基板保持具に棚状に保持された複数の基板に成膜ガスを供給して成膜する成膜方法において、
前記反応容器内における前記基板の保持領域の後方に設けられた成膜ガス吐出部から前記成膜ガスを吐出する工程と、
前記基板の保持領域の前方に設けられた排気口から前記成膜ガスを排気する工程と、
回転機構により前記基板保持具を縦軸の周りに回転させる工程と、
加熱部により、前記成膜ガス吐出部から吐出される前記成膜ガスの温度よりも前記反応容器内を低い温度に加熱する工程と、
前記成膜ガス吐出部において前記反応容器内のガス降温用部材に向けて横方向に開口した第1のガス吐出口から前記成膜ガスを、前記基板に供給される前にガス降温用部材に衝突させて降温されるように吐出する工程と、
前記成膜ガス吐出部において前記第1のガス吐出口とは異なる向きで前方に向けて開口した第2のガス吐出口から前記成膜ガスを、前記基板に供給される前に前記ガス降温用部材に衝突しないように吐出する工程と、
を備えることを特徴とする成膜方法。 - 真空雰囲気が形成される縦型の反応容器内にて、基板保持具に棚状に保持された複数の基板を加熱した状態で成膜ガスを供給して成膜する成膜装置に用いられるコンピュータプログラムを記憶した記憶媒体であって、
前記コンピュータプログラムは、請求項9記載の成膜方法を実行するようにステップ群が組まれていることを特徴とする記憶媒体。
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JP2015002339A (ja) * | 2013-06-18 | 2015-01-05 | 株式会社日立国際電気 | 基板処理装置、基板の製造方法および半導体装置の製造方法 |
JP2016181666A (ja) * | 2015-03-25 | 2016-10-13 | 株式会社東芝 | 半導体製造装置および半導体製造方法 |
Cited By (5)
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JP2020155650A (ja) * | 2019-03-20 | 2020-09-24 | 東京エレクトロン株式会社 | 熱処理装置及び成膜方法 |
JP7149884B2 (ja) | 2019-03-20 | 2022-10-07 | 東京エレクトロン株式会社 | 熱処理装置及び成膜方法 |
US11581201B2 (en) | 2019-03-20 | 2023-02-14 | Tokyo Electron Limited | Heat treatment apparatus and film deposition method |
JP7530650B2 (ja) | 2019-05-02 | 2024-08-08 | ツルン ユリオピスト | フィルムを作製するための方法 |
WO2024003997A1 (ja) * | 2022-06-27 | 2024-01-04 | 株式会社Kokusai Electric | 基板処理装置、基板処理方法、及び半導体装置の製造方法 |
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TW201842980A (zh) | 2018-12-16 |
US20180264516A1 (en) | 2018-09-20 |
KR102232637B1 (ko) | 2021-03-25 |
CN108630577A (zh) | 2018-10-09 |
CN108630577B (zh) | 2023-04-18 |
US10960435B2 (en) | 2021-03-30 |
JP6737215B2 (ja) | 2020-08-05 |
KR20180106888A (ko) | 2018-10-01 |
TWI729275B (zh) | 2021-06-01 |
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