JPWO2016190036A1 - プラズマ処理装置およびそれを用いたプラズマ処理方法 - Google Patents
プラズマ処理装置およびそれを用いたプラズマ処理方法 Download PDFInfo
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Abstract
Description
Claims (14)
- 試料がプラズマ処理される処理室と、前記処理室内にプラズマを生成するための高周波電力を供給する高周波電源と、前記試料が載置される試料台とを備えるプラズマ処理装置において、
前記プラズマより生成されたイオンの前記試料台への入射を遮蔽し前記試料台の上方に配置された遮蔽板と、
前記遮蔽板の上方にプラズマを生成させる一方の制御または前記遮蔽板の下方にプラズマを生成させる他方の制御が選択的に行われる制御装置と、をさらに備えることを特徴とするプラズマ処理装置。 - 請求項1に記載のプラズマ処理装置において、
前記処理室内に磁場を生成する磁場生成手段をさらに備え、
前記高周波電源は、マイクロ波の高周波電力を前記処理室内に供給することを特徴とするプラズマ処理装置。 - 請求項1に記載のプラズマ処理装置において、
誘導磁場により前記遮蔽版の上方にプラズマを生成させるための第一の誘導コイルと、
誘導磁場により前記遮蔽版の下方にプラズマを生成させるための第二の誘導コイルと、をさらに備えることを特徴とするプラズマ処理装置。 - 請求項2に記載のプラズマ処理装置において、
前記遮蔽板の材質は、誘電体であることを特徴とするプラズマ処理装置。 - 請求項3に記載のプラズマ処理装置において、
前記遮蔽板の材質は、導体であることを特徴とするプラズマ処理装置。 - 試料がプラズマ処理される処理室と、前記処理室内にプラズマを生成するための高周波電力を供給する高周波電源と、前記試料が載置される試料台とを備えるプラズマ処理装置において、
前記プラズマより生成されたイオンの前記試料台への入射を遮蔽し前記試料台の上方に配置された遮蔽板と、
前記遮蔽板の上方にプラズマを生成させる第一の期間と前記遮蔽板の下方にプラズマを生成させる第二の期間が切り替えられながらプラズマ処理される制御が行われる制御装置と、をさらに備えることを特徴とするプラズマ処理装置。 - 請求項1または請求項6に記載のプラズマ処理装置において、
前記遮蔽版は、第一の遮蔽版と、前記第一の遮蔽版と対向する第二の遮蔽版と、を具備し、
前記第一の遮蔽版の開口部と対向する前記第二の遮蔽版の箇所に開口部が配置されていないことを特徴とするプラズマ処理装置。 - 請求項1または請求項6に記載のプラズマ処理装置において、
前記処理内に磁場を生成する磁場生成手段をさらに備え、
前記遮蔽版は、ラジカルが前記試料台へ供給されるための孔を具備し、
前記処理室の垂直方向に対する前記孔の傾き方向は、前記処理室の垂直方向に対する前記磁場の傾き方向と逆であることを特徴とするプラズマ処理装置。 - 試料がプラズマ処理される処理室と、前記処理室内にプラズマを生成するための高周波電力を供給する高周波電源と、前記試料が載置される試料台と、前記プラズマより生成されたイオンの前記試料台への入射を遮蔽し前記試料台の上方に配置された遮蔽板とを備えるプラズマ処理装置を用いて前記試料をプラズマ処理するプラズマ処理方法において、
前記遮蔽板の上方にプラズマを生成する一方の制御または前記遮蔽板の下方にプラズマを生成する他方の制御を選択的に行うことを特徴とするプラズマ処理方法。 - 請求項9に記載のプラズマ処理方法において、
前記プラズマは、マイクロ波電子サイクロトロン共鳴型プラズマであり、
前記マイクロ波と電子サイクロトロン共鳴するための磁束密度の位置を制御することにより前記遮蔽板の上方にプラズマを生成するまたは前記遮蔽板の下方にプラズマを生成することを特徴とするプラズマ処理方法。 - 試料がプラズマ処理される処理室と、前記処理室内にプラズマを生成するための高周波電力を供給する高周波電源と、前記試料が載置される試料台と、前記プラズマより生成されたイオンの前記試料台への入射を遮蔽し前記試料台の上方に配置された遮蔽板とを備えるプラズマ処理装置を用いて前記試料をプラズマ処理するプラズマ処理方法において、
前記遮蔽板の上方にプラズマを生成する第一の期間と前記遮蔽板の下方にプラズマを生成する第二の期間を切り替えながらプラズマ処理を行うことを特徴とするプラズマ処理方法。 - 請求項11に記載のプラズマ処理方法において、
前記プラズマは、マイクロ波電子サイクロトロン共鳴型プラズマであり、
前記マイクロ波と電子サイクロトロン共鳴するための磁束密度の位置を制御することにより前記遮蔽板の上方にプラズマを生成するまたは前記遮蔽板の下方にプラズマを生成することを特徴とするプラズマ処理方法。 - 孔または溝の側壁に形成されたパターンに埋め込まれた膜の前記パターン以外の部分をプラズマエッチングにより除去するプラズマ処理方法において、
前記孔または溝の底面の前記膜を除去した後、前記孔または溝の深さ方向に垂直な方向の前記膜を除去することを特徴とするプラズマ処理方法。 - 請求項13に記載のプラズマ処理方法において、
イオンアシストエッチングにより前記孔または底面の膜を除去し、
ラジカルエッチングにより前記孔または溝の深さ方向に垂直な方向の膜を除去することを特徴とするプラズマ処理方法。
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