JPWO2019003483A1 - プラズマ処理方法、及びプラズマ処理装置 - Google Patents
プラズマ処理方法、及びプラズマ処理装置 Download PDFInfo
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Abstract
Description
試料が載置される試料台と、光を照射する光源と、光源から照射された光を被エッチング膜のマスクパターンに対して所定の角度に偏光させる偏光フィルターと、偏光フィルターの回転角度を制御する回転機構と、回転機構により回転角度を制御された偏光フィルターによって偏光された光を照射することにより得られマスクパターンによって反射された干渉光の変化を用いて被エッチング膜上における堆積層の膜厚の変化量が求められる制御部とを備えることを特徴とするプラズマ処理装置を提供する。
例えば、参照パターンの断面形状が図7の(a)に示した垂直なパターンの場合であり、デポ膜厚の指標が指定された許容範囲r01よりも大きく、エッチング量の指標の変化が指定値I1よりも小さい場合、実際のエッチングパターンの断面形状は、例えば、図7の(b)のエッチストップと判定することができる。また、デポ膜厚の指標が指定された許容範囲r02よりも大きく、エッチング量の指標の変化、例えば振幅の変化が指定値I2よりも小さい場合には、断面形状は、例えば、図7の(c)のテーパー形状と判定することができる。同様に、デポ膜厚の指標が指定された許容範囲r03よりも大きく、エッチング量の指標の変化、例えば周期の変化が指定値S3よりも大きい場合には、断面形状は、例えば、図7の(d)の線幅が増大した断面形状と判定することができ、デポ膜厚の指標が指定された許容範囲r04よりも小さく、エッチング量の指標の変化、例えば周期の変化が指定値S4よりも小さい場合には、断面形状は、例えば、図7の(e)の線幅が減少した断面形状と判定することができる。更に、デポ膜厚の指標が指定された許容範囲r05よりも小さく、エッチング量の指標の変化、例えば振幅の変化が指定値I5よりも小さい場合には、断面形状は、例えば、図7の(f)の肩落ちした断面形状と判定することができる。
Claims (15)
- 被エッチング膜上に堆積層を形成する堆積工程と、前記堆積層と前記被エッチング膜との反応生成物を除去する除去工程と、を繰り返すことにより前記被エッチング膜をエッチングするプラズマ処理方法において、
前記被エッチング膜のマスクパターンに対して所定の角度に偏光された偏光を照射することにより得られ前記マスクパターンによって反射された干渉光の変化を用いて前記堆積層の膜厚の変化量をモニタするモニタ工程を有することを特徴とするプラズマ処理方法。 - 請求項1に記載のプラズマ処理方法において、
前記所定の角度は、前記マスクパターンがラインアンドスペースパターンの場合、90度であることを特徴とするプラズマ処理方法。 - 請求項1に記載のプラズマ処理方法において、
前記モニタ工程は、前記除去工程の前記干渉光の信号強度と前記堆積工程の前記干渉光の信号強度との差に基づいて前記堆積層の膜厚の変化量をモニタすることを特徴とするプラズマ処理方法。 - 請求項1に記載のプラズマ処理方法において、
前記モニタ工程は、前記干渉光の信号強度を用いて求められたフィッティング曲線の振幅と周期に基づいて前記堆積層の膜厚の変化量をモニタすることを特徴とするプラズマ処理方法。 - 請求項2に記載のプラズマ処理方法において、
前記モニタ工程は、前記除去工程の前記干渉光の信号強度と前記堆積工程の前記干渉光の信号強度との差に基づいて前記堆積層の膜厚の変化量をモニタすることを特徴とするプラズマ処理方法。 - 請求項2に記載のプラズマ処理方法において、
前記モニタ工程は、前記干渉光の信号強度を用いて求められたフィッティング曲線の振幅と周期に基づいて前記堆積層の膜厚の変化量をモニタすることを特徴とするプラズマ処理方法。 - 請求項3に記載のプラズマ処理方法において、
前記差は、前記除去工程の干渉光の信号強度を用いて求められたフィッティング曲線の傾きにより規格化されていることを特徴とするプラズマ処理方法。 - 請求項1に記載のプラズマ処理方法において、
前記偏光は、前記マスクパターンがホールパターンであり、前記ホールパターンにおける一方の方向のピッチが前記ホールパターンにおける他方の方向のピッチより小さい場合、前記一方の方向のピッチに対して垂直に偏光され、
前記モニタ工程は、前記他方の方向の側における前記ホールパターンの側壁の堆積層に係る膜厚の変化量をモニタすることを特徴とするプラズマ処理方法。 - 請求項6に記載のプラズマ処理方法において、
前記偏光は、前記マスクパターンがホールパターンであり、前記ホールパターンにおける一方の方向のピッチが前記ホールパターンにおける他方の方向のピッチより小さい場合、前記一方の方向のピッチに対して垂直に偏光され、
前記モニタ工程は、前記他方の方向の側における前記ホールパターンの側壁の堆積層に係る膜厚の変化量をモニタすることを特徴とするプラズマ処理方法。 - 請求項7に記載のプラズマ処理方法において、
前記偏光は、前記マスクパターンがホールパターンであり、前記ホールパターンにおける一方の方向のピッチが前記ホールパターンにおける他方の方向のピッチより小さい場合、前記一方の方向のピッチに対して垂直に偏光され、
前記モニタ工程は、前記他方の方向の側における前記ホールパターンの側壁の堆積層に係る膜厚の変化量をモニタすることを特徴とするプラズマ処理方法。 - 被エッチング膜が成膜された試料がプラズマ処理される処理室と、
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、
光を照射する光源と、
前記光源から照射された光を前記被エッチング膜のマスクパターンに対して所定の角度に偏光させる偏光フィルターと、
前記偏光フィルターの回転角度を制御する回転機構と、
前記回転機構により回転角度を制御された前記偏光フィルターによって偏光された前記光を照射することにより得られ前記マスクパターンによって反射された干渉光の変化を用いて前記被エッチング膜上における堆積層の膜厚の変化量が求められる制御部とを備えることを特徴とするプラズマ処理装置。 - 請求項11に記載のプラズマ処理装置において、前記回転機構は、前記マスクパターンがラインアンドスペースパターンの場合、前記所定の角度が90度となるように前記偏光フィルターの回転角度を制御することを特徴とするプラズマ処理装置。
- 請求項11に記載のプラズマ処理装置において、
前記被エッチング膜上に堆積層を形成する堆積工程と、前記堆積層と前記被エッチング膜との反応生成物を除去する除去工程と、を繰り返すことにより前記被エッチング膜をエッチングするプラズマ処理が行われる場合、前記制御部は、前記除去工程の前記干渉光の信号強度と前記堆積工程の前記干渉光の信号強度との差に基づいて前記堆積層の膜厚の変化量を求めることを特徴とするプラズマ処理装置。 - 請求項11に記載のプラズマ処理装置において、前記被エッチング膜上に堆積層を形成する堆積工程と、前記堆積層と前記被エッチング膜との反応生成物を除去する除去工程と、を繰り返すことにより前記被エッチング膜をエッチングするプラズマ処理が行われる場合、前記制御部は、前記干渉光の信号強度を用いて求められたフィッティング曲線の振幅と周期に基づいて前記堆積層の膜厚の変化量を求める
ことを特徴とするプラズマ処理装置。 - 請求項13に記載のプラズマ処理装置において、前記差は、前記除去工程の干渉光の信号強度を用いて求められたフィッティング曲線の傾きにより規格化された値であり、
前記マスクパターンがホールパターンであり、前記ホールパターンにおける一方の方向のピッチが前記ホールパターンにおける他方の方向のピッチより小さい場合、
前記回転機構は、前記一方の方向のピッチに対して垂直に前記光が偏光されるように前記偏光フィルターの回転角度を制御し、
前記制御部は、前記他方の方向の側における前記ホールパターンの側壁の堆積層に係る膜厚の変化量を求める
ことを特徴とするプラズマ処理装置。
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Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2001332534A (ja) * | 2000-05-25 | 2001-11-30 | Matsushita Electric Ind Co Ltd | プラズマ処理方法及びプラズマ処理装置 |
JP2004526293A (ja) * | 2000-09-21 | 2004-08-26 | アプライド マテリアルズ インコーポレイテッド | チャンバ内の表面上へのプロセス残留分の堆積を減少させる装置及び方法 |
JP2005127797A (ja) * | 2003-10-22 | 2005-05-19 | Toshiba Corp | 光学式プロセスモニタ装置、光学式プロセスモニタ方法及び半導体装置の製造方法 |
WO2012023537A1 (ja) * | 2010-08-19 | 2012-02-23 | 株式会社 アルバック | ドライエッチング方法及び半導体装置の製造方法 |
JP2014204050A (ja) * | 2013-04-09 | 2014-10-27 | 株式会社日立ハイテクノロジーズ | プラズマ処理方法およびプラズマ処理装置 |
JP2014232825A (ja) * | 2013-05-30 | 2014-12-11 | 株式会社日立ハイテクノロジーズ | プラズマ処理方法 |
WO2017159512A1 (ja) * | 2016-03-17 | 2017-09-21 | 日本ゼオン株式会社 | プラズマエッチング方法 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6390019B1 (en) | 1998-06-11 | 2002-05-21 | Applied Materials, Inc. | Chamber having improved process monitoring window |
US6831742B1 (en) * | 2000-10-23 | 2004-12-14 | Applied Materials, Inc | Monitoring substrate processing using reflected radiation |
JP2005302771A (ja) * | 2004-04-06 | 2005-10-27 | Renesas Technology Corp | 半導体デバイスの製造装置および製造方法 |
KR100704822B1 (ko) * | 2005-04-15 | 2007-04-09 | 가부시키가이샤 히타치세이사쿠쇼 | 반도체 장치의 제조 방법 |
JP5713808B2 (ja) * | 2010-07-09 | 2015-05-07 | 東京エレクトロン株式会社 | プラズマ処理方法及び半導体装置の製造方法 |
US8440473B2 (en) * | 2011-06-06 | 2013-05-14 | Lam Research Corporation | Use of spectrum to synchronize RF switching with gas switching during etch |
JP2014107520A (ja) * | 2012-11-30 | 2014-06-09 | Hitachi High-Technologies Corp | プラズマエッチング方法 |
CN104658882B (zh) * | 2013-11-25 | 2017-09-01 | 北京北方微电子基地设备工艺研究中心有限责任公司 | 控制浅沟槽深度微负载效应的刻蚀方法 |
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Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001332534A (ja) * | 2000-05-25 | 2001-11-30 | Matsushita Electric Ind Co Ltd | プラズマ処理方法及びプラズマ処理装置 |
JP2004526293A (ja) * | 2000-09-21 | 2004-08-26 | アプライド マテリアルズ インコーポレイテッド | チャンバ内の表面上へのプロセス残留分の堆積を減少させる装置及び方法 |
JP2005127797A (ja) * | 2003-10-22 | 2005-05-19 | Toshiba Corp | 光学式プロセスモニタ装置、光学式プロセスモニタ方法及び半導体装置の製造方法 |
WO2012023537A1 (ja) * | 2010-08-19 | 2012-02-23 | 株式会社 アルバック | ドライエッチング方法及び半導体装置の製造方法 |
JP2014204050A (ja) * | 2013-04-09 | 2014-10-27 | 株式会社日立ハイテクノロジーズ | プラズマ処理方法およびプラズマ処理装置 |
JP2014232825A (ja) * | 2013-05-30 | 2014-12-11 | 株式会社日立ハイテクノロジーズ | プラズマ処理方法 |
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