JP5939147B2 - 成膜装置、基板処理装置及び成膜方法 - Google Patents
成膜装置、基板処理装置及び成膜方法 Download PDFInfo
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Description
特許文献3には、下部電極にバイアス電圧を印加する装置について記載されているが、回転テーブルによりウエハを公転させる技術については記載されていない。
真空容器内にて基板に対して成膜処理を行うための成膜装置において、
基板を載置する基板載置領域を公転させるための回転テーブルと、
前記基板載置領域に処理ガスを供給する処理ガス供給部を含み、前記回転テーブルの回転に伴い基板上に分子層あるいは原子層を順次積層して薄膜を形成するための成膜領域と、
この成膜領域に対して前記回転テーブルの回転方向に離間して設けられたプラズマ発生領域にて、プラズマ発生用ガスのプラズマ化によって生成したプラズマにより前記分子層あるいは原子層を改質処理するためのプラズマ処理部と、
プラズマ中のイオンを基板の表面に引き込むために、前記回転テーブル上の基板の高さ位置よりも下方側に設けられた下側バイアス電極及び前記高さ位置と同じかあるいは当該高さ位置よりも上方側に配置された上側バイアス電極と、
これらバイアス電極の少なくとも一方に接続され、前記下側バイアス電極及び前記上側バイアス電極が前記プラズマ発生領域を介して容量結合されて基板にバイアス電位を形成するための高周波電源部と、
前記真空容器内を排気するための排気機構と、を備えたことを特徴とする。
前記上側バイアス電極は、前記アンテナと前記プラズマ発生領域との間に設けられ、前記アンテナにより形成される電磁界の電界を遮断し、磁界を通過させるために、前記アンテナの伸びる方向と交差するように形成されたスリットをアンテナの長さ方向に沿って複数配列した導電板である構成。
前記処理ガス供給部に対して回転テーブルの回転方向に離間した位置に設けられ、当該処理ガス供給部から供給される処理ガスと反応するガスを供給するための別の処理ガス供給部と、
前記処理ガス供給部及び前記別の処理ガス供給部から夫々ガスが供給される処理領域同士を互いに分離するために、これら処理領域同士の間に設けられた分離領域に対して分離ガスを各々供給するための分離ガス供給部と、を備えた構成。
前記プラズマ処理部は、プラズマ発生用ガスをプラズマ化するためのプラズマ発生用高周波電源を備えており、このプラズマ発生用高周波電源は、前記高周波電源部を兼用している構成。この場合には、前記プラズマ処理部は、前記プラズマ発生領域に容量結合プラズマを発生させるために、互いに対向するように配置された一対の対向電極を備えていても良い。
真空容器内にて基板に対して成膜処理を行うための成膜方法において、
回転テーブル上の基板載置領域に、表面に凹部が形成された基板を載置すると共に、この基板載置領域を公転させる工程と、
次いで、前記基板載置領域の基板に対して処理ガスを供給して、当該基板上に分子層あるいは原子層を成膜する工程と、
続いて、前記真空容器内における、前記処理ガスを供給する領域に対して回転テーブルの回転方向に離れたプラズマ発生領域にプラズマ発生用ガスを供給すると共に、このプラズマ発生用ガスをプラズマ化して、プラズマによって前記分子層あるいは原子層の改質処理を行う工程と、
前記回転テーブル上の基板の高さ位置よりも下方側に設けられた下側バイアス電極及び前記高さ位置と同じかあるいは当該高さ位置よりも上方側に配置された上側バイアス電極の少なくとも一方に給電して、前記プラズマ発生領域を介して前記下側バイアス電極及び前記上側バイアス電極を容量結合させて基板にバイアス電位を形成することにより、当該基板の表面にプラズマ中のイオンを引き込む工程と、
前記真空容器内を排気する工程と、を含むことを特徴とする。
また、下側バイアス電極120としては、真空容器1の外側(真空容器1の底面部の下側)に配置しても良い。
(表2)
尚、この表2における「プラズマ+O2」や「プラズマ+O3」とは、例えば第2の処理ガスノズル32の上方側に既述のプラズマ処理部80を設けて、これら酸素ガスやオゾンガスをプラズマ化して用いることを意味している。
(表3)
尚、この表3における「プラズマ」についても、表2と同様に「プラズマ」の用語に続く各ガスをプラズマ化して用いることを意味している。
(表6)
(表7)
尚、この表7において、酸素元素(O)を含むプラズマ、窒素元素(N)を含むプラズマ及び炭素元素(C)を含むプラズマについては、酸化膜、窒化膜及び炭化膜を成膜するプロセスだけに夫々用いても良い。
1 真空容器
2 回転テーブル
P1、P2 処理領域
S3 バイアス空間
10 凹部
31、32、34 ガスノズル
80 プラズマ処理部
83 アンテナ
95 ファラデーシールド
120 下側バイアス電極
85、128 高周波電源
Claims (7)
- 真空容器内にて基板に対して成膜処理を行うための成膜装置において、
基板を載置する基板載置領域を公転させるための回転テーブルと、
前記基板載置領域に処理ガスを供給する処理ガス供給部を含み、前記回転テーブルの回転に伴い基板上に分子層あるいは原子層を順次積層して薄膜を形成するための成膜領域と、
この成膜領域に対して前記回転テーブルの回転方向に離間して設けられたプラズマ発生領域にて、プラズマ発生用ガスのプラズマ化によって生成したプラズマにより前記分子層あるいは原子層を改質処理するためのプラズマ処理部と、
プラズマ中のイオンを基板の表面に引き込むために、前記回転テーブル上の基板の高さ位置よりも下方側に設けられた下側バイアス電極及び前記高さ位置と同じかあるいは当該高さ位置よりも上方側に配置された上側バイアス電極と、
これらバイアス電極の少なくとも一方に接続され、前記下側バイアス電極及び前記上側バイアス電極が前記プラズマ発生領域を介して容量結合されて基板にバイアス電位を形成するための高周波電源部と、
前記真空容器内を排気するための排気機構と、を備えたことを特徴とする成膜装置。 - 前記プラズマ処理部は、プラズマ発生領域に誘導結合プラズマを発生させるために、鉛直軸周りに巻回されると共にプラズマ発生用高周波電源に接続されたアンテナを備えており、
前記上側バイアス電極は、前記アンテナと前記プラズマ発生領域との間に設けられ、前記アンテナにより形成される電磁界の電界を遮断し、磁界を通過させるために、前記アンテナの伸びる方向と交差するように形成されたスリットをアンテナの長さ方向に沿って複数配列した導電板であることを特徴とする請求項1に記載の成膜装置。 - 前記下側バイアス電極及び前記上側バイアス電極は、前記回転テーブル上の基板に対して夫々隙間領域を介して配置されていることを特徴とする請求項1または2に記載の成膜装置。
- 前記処理ガス供給部に対して回転テーブルの回転方向に離間した位置に設けられ、当該処理ガス供給部から供給される処理ガスと反応するガスを供給するための別の処理ガス供給部と、
前記処理ガス供給部及び前記別の処理ガス供給部から夫々ガスが供給される処理領域同士を互いに分離するために、これら処理領域同士の間に設けられた分離領域に対して分離ガスを各々供給するための分離ガス供給部と、を備えていることを特徴とする請求項1ないし3のいずれか一つに記載の成膜装置。 - 前記プラズマ処理部は、プラズマ発生用ガスをプラズマ化するためのプラズマ発生用高周波電源を備えており、このプラズマ発生用高周波電源は、前記高周波電源部を兼用していることを特徴とする請求項1に記載の成膜装置。
- 前記プラズマ処理部は、前記プラズマ発生領域に容量結合プラズマを発生させるために、互いに対向するように配置された一対の対向電極を備えていることを特徴とする請求項5に記載の成膜装置。
- 真空容器内にて基板に対して成膜処理を行うための成膜方法において、
回転テーブル上の基板載置領域に、表面に凹部が形成された基板を載置すると共に、この基板載置領域を公転させる工程と、
次いで、前記基板載置領域の基板に対して処理ガスを供給して、当該基板上に分子層あるいは原子層を成膜する工程と、
続いて、前記真空容器内における、前記処理ガスを供給する領域に対して回転テーブルの回転方向に離れたプラズマ発生領域にプラズマ発生用ガスを供給すると共に、このプラズマ発生用ガスをプラズマ化して、プラズマによって前記分子層あるいは原子層の改質処理を行う工程と、
前記回転テーブル上の基板の高さ位置よりも下方側に設けられた下側バイアス電極及び前記高さ位置と同じかあるいは当該高さ位置よりも上方側に配置された上側バイアス電極の少なくとも一方に給電して、前記プラズマ発生領域を介して前記下側バイアス電極及び前記上側バイアス電極を容量結合させて基板にバイアス電位を形成することにより、当該基板の表面にプラズマ中のイオンを引き込む工程と、
前記真空容器内を排気する工程と、を含むことを特徴とする成膜方法。
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| Publication number | Publication date |
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| CN103866297B (zh) | 2017-06-09 |
| CN103866297A (zh) | 2014-06-18 |
| KR101672078B1 (ko) | 2016-11-02 |
| KR20140077841A (ko) | 2014-06-24 |
| TW201441413A (zh) | 2014-11-01 |
| TWI546407B (zh) | 2016-08-21 |
| JP2014120564A (ja) | 2014-06-30 |
| US20140170859A1 (en) | 2014-06-19 |
| US9583312B2 (en) | 2017-02-28 |
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