JP7089987B2 - 原子層堆積装置 - Google Patents
原子層堆積装置 Download PDFInfo
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- JP7089987B2 JP7089987B2 JP2018155416A JP2018155416A JP7089987B2 JP 7089987 B2 JP7089987 B2 JP 7089987B2 JP 2018155416 A JP2018155416 A JP 2018155416A JP 2018155416 A JP2018155416 A JP 2018155416A JP 7089987 B2 JP7089987 B2 JP 7089987B2
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- 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
- H01L21/68742—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 lifting arrangement, e.g. lift pins
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- C23C16/30—Deposition of compounds, mixtures or solid solutions, e.g. borides, carbides, nitrides
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- C23C16/403—Oxides of aluminium, magnesium or beryllium
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- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
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Description
<成膜装置の全体構成について>
本実施の形態における成膜装置1の全体構成について、図1~図6を参照して説明する。図1~図3は、本実施の形態における成膜装置1の全体構成を模式的に示す断面図である。図1は、成膜装置1のステージ4の上面(サセプタ4aの上面)に略平行な断面(横断面)であり、図2および図3は、成膜装置1のステージ4の上面に略垂直な断面(縦断面)であり、図1のA-A線の位置での断面が、図2にほぼ対応し、図1のB-B線の位置での断面が、図3にほぼ対応している。また、図4~図6は、成膜装置1のチャンバ2の断面図であり、チャンバだけが示されている。図4~図6は、ステージ4の上面に略平行な断面であるが、断面の高さ位置が互いに相違しており、図2に矢印で示される高さ位置h1でのチャンバ2の断面が、図4にほぼ対応し、図2に矢印で示される高さ位置h2でのチャンバ2の断面が、図5にほぼ対応し、図2に矢印で示される高さ位置h3でのチャンバ2の断面が、図6にほぼ対応している。図1の断面は、図6と同様に、図2に矢印で示される高さ位置h3での断面にほぼ対応している。なお、図1、図4~図6に示されているX方向およびY方向は、いずれも成膜装置1のステージ4の上面に略平行な方向であり、X方向とY方向とは互いに直交している。
(すなわち後述のステップS2を行う際には)、防着部材19は上昇位置にあり、上昇位置の防着部材19が開口部11を覆っているからである。不活性ガス導入部31a,31bのうち、不活性ガス導入部31aは、開口部11よりも高い位置(上側)に配置されており、不活性ガス導入部31bは、開口部11よりも低い位置(下側)に配置されている。防着部材19が開口部11を覆っている状態で、不活性ガス導入部31a,31bを介して防着部材19の表面に不活性ガスを供給することができる。
成膜装置1を用いた成膜工程(ALD法による成膜工程)について、図7~図26を参照して説明する。図7は、成膜装置1を用いた成膜工程を示す工程フロー図である。図8~図19,図21~図26は、成膜装置1を用いた成膜工程を示す説明図(断面図)であり、このうち、図8~図14および図21~図26には、上記図2に対応する断面が示され、図15~図19には、上記図3に対応する断面が示されている。図20は、成膜工程における成膜処理ステップ(ステップS2)の説明図である。
ALD法を用いて成膜を行う成膜装置(ALD装置)においては、成膜を行うためのチャンバ内のステージ上に基板を配置し、その基板上に所望の膜を形成する。このため、成膜処理を行うためには、処理対象物である基板をチャンバ内に搬入し、また、成膜処理が終了したら、基板をチャンバ外に搬出する必要がある。
本実施の形態の成膜装置(原子層堆積装置)1は、基板3に対する成膜処理を行うためのチャンバ2と、チャンバ2内に配置され、基板3を搭載するためのステージ4と、を含んでいる。成膜装置1は、チャンバ2の側壁部2cに設けられた基板搬送用の開口部11と、チャンバ2の外側に配置され、かつ、開口部11に接続された開閉部12と、チャンバ2内に配置された移動可能な防着部材19と、を更に含んでいる。
ステップS2で基板3上に形成される膜は、有機EL素子の発光層を保護する保護膜の一部を構成する膜として形成することができる。この場合、基板3は、例えばガラス基板またはフレキシブル基板である。特に、酸化アルミニウム膜は、有機EL素子用の保護膜として優れているため、有機EL素子用の保護膜として酸化アルミニウム膜をステップS2で基板3上に形成することができる。例えば、TMAガスを原料ガスとして使用し、かつ、酸素ガスを反応ガスとして使用し、かつ、窒素ガスをパージガスとして使用することにより、酸化アルミニウム膜を基板3上に形成することができる。
2 チャンバ
2a 天板部
2b 底板部
2c 側壁部
3 基板
4 ステージ
4a サセプタ
4b ステージ本体部
5 上部電極
6 高周波電源
7 空間
8 ガス導入部
9 ガス排気部
10a,10b,10c,10d 側面
11 開口部
12 開閉部
13 基板搬送経路
14 リフトピン
15,27,28,29 支持部材
16,20 シャフト
17,21 駆動機構
18 支持台
19,23,24,25,26 防着部材
22 制御部
31,31a~31h 不活性ガス導入部
41 ロボットアーム
61 原料ガス
62 不活性ガス
63 吸着層
64,67 パージガス
65 反応ガス
66 原子層
Claims (19)
- 以下を含む原子層堆積装置:
基板に対する成膜処理を行うためのチャンバ;
前記チャンバ内に配置された、前記基板を搭載するためのステージ;
前記チャンバの側壁に設けられた、前記基板の搬送用の開口部;
前記チャンバの前記側壁に設けられた、前記チャンバ内に原料ガス、パージガスおよび反応ガスを供給するためのガス供給部;
前記チャンバの外側に配置され、かつ、前記開口部に接続された開閉部;および
前記チャンバ内に配置された移動可能な第1の防着部材、
ここで、前記第1の防着部材は、前記開閉部が閉じられた状態で、前記開口部を覆う位置に配置される。 - 前記チャンバの前記側壁には、排気のためのガス排気部が形成されている請求項1記載の原子層堆積装置。
- 前記チャンバの前記側壁において、前記ガス供給部と前記ガス排気部とは、互いに対向する位置に配置されている請求項2記載の原子層堆積装置。
- 前記チャンバの前記側壁は、互いに対向する一対の第1側面と、互いに対向する一対の第2側面とを有し、
前記開口部は、前記一対の第1側面の一方に形成され、
前記ガス供給部は、前記一対の第2側面の一方に形成され、
前記ガス排気部は、前記一対の第2側面の他方に形成されている請求項2記載の原子層堆積装置。 - 前記一対の第1側面と前記一対の第2側面とは、互いに直交している請求項4記載の原子層堆積装置。
- 以下を含む原子層堆積装置:
基板に対する成膜処理を行うためのチャンバ;
前記チャンバ内に配置された、前記基板を搭載するためのステージ;
前記チャンバの側壁に設けられた、前記基板の搬送用の開口部;
前記チャンバの前記側壁に設けられた、第1の不活性ガス供給口;
前記チャンバの外側に配置され、かつ、前記開口部に接続された開閉部;および
前記チャンバ内に配置された移動可能な第1の防着部材、
ここで、前記第1の防着部材は、前記開閉部が閉じられた状態で、前記開口部を覆う位置に配置され、
前記第1の防着部材が前記開口部を覆っている状態で、前記第1の不活性ガス供給口を介して前記第1の防着部材の表面に不活性ガスが供給可能である。 - 前記第1の不活性ガス供給口は前記開口部の上下に複数形成されている請求項6記載の原子層堆積装置。
- 前記ステージ上に配置されたサセプタ;および
前記チャンバ内に配置され、前記サセプタとの間に高周波電界を発生させる電極、
を含み、
前記基板は前記サセプタ上に搭載される請求項1から7のいずれか1項に記載の原子層堆積装置。 - 前記サセプタを貫通するリフトピンを更に含み、
前記リフトピンによって前記基板を昇降可能である請求項8記載の原子層堆積装置。 - 前記基板に対する成膜処理を行う際には、前記チャンバの前記開口部の少なくとも一部は、前記サセプタと前記電極との間の空間と同じ高さ位置にあり、かつ、前記第1の防着部材が前記開口部を覆っている請求項8記載の原子層堆積装置。
- 以下を含む原子層堆積装置:
基板に対する成膜処理を行うためのチャンバ;
前記チャンバ内に配置された、前記基板を搭載するためのステージ;
前記ステージ上に配置されたサセプタ;
前記チャンバ内に配置され、前記サセプタとの間に高周波電界を発生させる電極、
前記チャンバの側壁に設けられた、前記基板の搬送用の開口部;
前記チャンバの外側に配置され、かつ、前記開口部に接続された開閉部;および
前記チャンバ内に配置された移動可能な第1の防着部材、
ここで、前記第1の防着部材は、前記開閉部が閉じられた状態で、前記開口部を覆う位置に配置され、
前記基板は前記サセプタ上に搭載され、
前記チャンバの前記側壁は、互いに対向する一対の第1側面と、互いに対向する一対の第2側面とを有し、
前記開口部は、前記一対の第1側面の一方に形成され、
前記一対の第1側面の他方に第2の防着部材が配置され、
前記第2の防着部材と、前記開口部を覆う位置に配置された前記第1の防着部材とは、前記サセプタおよび前記電極を挟んで対向する。 - 前記チャンバの前記一対の第1側面の前記他方には、第2の不活性ガス供給口が形成され、
前記第2の不活性ガス供給口を介して前記第2の防着部材の表面に不活性ガスを供給可能である請求項11記載の原子層堆積装置。 - 以下を含む原子層堆積装置:
基板に対する成膜処理を行うためのチャンバ;
前記チャンバ内に配置された、前記基板を搭載するためのステージ;
前記ステージ上に配置されたサセプタ;
前記チャンバ内に配置され、前記サセプタとの間に高周波電界を発生させる電極、
前記チャンバの側壁に設けられた、前記基板の搬送用の開口部;
前記チャンバの外側に配置され、かつ、前記開口部に接続された開閉部;および
前記チャンバ内に配置された移動可能な第1の防着部材、
ここで、前記第1の防着部材は、前記開閉部が閉じられた状態で、前記開口部を覆う位置に配置され、
前記基板は前記サセプタ上に搭載され、
前記電極の主面及び側面を覆うように第3の防着部材が配置されている。 - 前記基板に対する成膜処理を行う際には、前記チャンバの前記開口部の少なくとも一部は、前記サセプタと前記電極との間の空間と同じ高さ位置にあり、かつ、前記第1の防着部材が前記開口部を覆っている請求項11から13のいずれか1項に記載の原子層堆積装置。
- 前記第1の防着部材は、前記チャンバ内において、前記チャンバの側壁に沿って移動可能である請求項1から14のいずれか1項に記載の原子層堆積装置。
- 前記チャンバの外側に昇降機構を有し、
前記昇降機構によって前記第1の防着部材が昇降される請求項1から15のいずれか1項に記載の原子層堆積装置。 - 前記基板は、半導体基板、ガラス基板、またはフレキシブル基板である請求項1から16のいずれか1項に記載の原子層堆積装置。
- 前記開閉部が開けられ、かつ、前記第1の防着部材が前記開口部を覆わない位置に配置された状態で、前記開口部から前記チャンバ内への前記基板の搬入が行われ、
前記開閉部が閉じられ、かつ、前記第1の防着部材が前記開口部を覆う位置に配置された状態で、前記チャンバ内の前記基板に対する成膜処理が行われる請求項1から17のいずれか1項に記載の原子層堆積装置。 - 前記ステージは、前記チャンバの底部に固定されている請求項1から18のいずれか1項に記載の原子層堆積装置。
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