JP6244518B2 - プラズマ処理方法及びプラズマ処理装置 - Google Patents
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- 238000003672 processing method Methods 0.000 title claims description 12
- 239000000758 substrate Substances 0.000 claims description 39
- 230000002093 peripheral effect Effects 0.000 claims description 20
- 238000001020 plasma etching Methods 0.000 claims description 8
- 239000004065 semiconductor Substances 0.000 description 46
- 150000002500 ions Chemical class 0.000 description 10
- 238000004519 manufacturing process Methods 0.000 description 9
- 238000005530 etching Methods 0.000 description 4
- 238000009825 accumulation Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 2
- 240000006829 Ficus sundaica Species 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
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Description
処理チャンバー内圧力:5.32Pa(40mTorr)
第1の高周波:周波数100MHz、300W
第2の高周波:周波数3.2MHz、10000W
処理時間:1分
なお、プラズマエッチング条件は、上記に限定されるものではなく、処理ガスの流量を、C4F8+C4F6=10〜300sccm、Ar=50〜800sccm、O2=5〜150sccmから任意に選択することにより、圧力を1.33〜5.32Pa(10〜40mTorr)に設定することが可能である。
Claims (7)
- 被処理基板にプラズマを作用させて処理を行うプラズマ処理方法であって、
前記被処理基板を収容する処理チャンバーと、
前記処理チャンバー内に配設され、前記被処理基板が載置される下部電極と、
前記処理チャンバー内に配設され、前記下部電極と対向する上部電極と、
前記被処理基板の周囲を囲むように配設されたフォーカスリングと、
前記上部電極と前記下部電極との間に高周波電力を印加する高周波電源と、
前記処理チャンバーの上部に配設された環状の電磁石であって、前記被処理基板の中心と同心状の環状の形状とされ前記被処理基板の周縁部より外側に位置するように配設されたコイルを有する電磁石と、
を具備したプラズマ処理装置を用い、
前記コイルにのみ通電して磁界を発生させることにより、前記被処理基板の上部及び前記フォーカスリングの上部に形成されるプラズマシースの界面を平坦化する
ことを特徴とするプラズマ処理方法。 - 請求項1記載のプラズマ処理方法であって、
前記被処理基板及び前記フォーカスリングの上部に形成されるプラズマシースの界面を平坦化することによって、プラズマエッチングによって形成されたパターンにチルティングが発生することを抑制することを特徴とするプラズマ処理方法。 - 請求項1又は2記載のプラズマ処理方法であって、
前記コイルに通電することによって発生させた磁界は、その水平磁界成分の径方向の分布が前記被処理基板の外周縁部より外側の部分でピークを有することを特徴とするプラズマ処理方法。 - 請求項1〜3いずれか1項記載のプラズマ処理方法であって、
前記フォーカスリングの消耗状態に応じて前記コイルに通電する電流を変化させることを特徴とするプラズマ処理方法。 - 被処理基板にプラズマを作用させて処理を行うプラズマ処理装置であって、
前記被処理基板を収容する処理チャンバーと、
前記処理チャンバー内に配設され、前記被処理基板が載置される下部電極と、
前記処理チャンバー内に配設され、前記下部電極と対向する上部電極と、
前記被処理基板の周囲を囲むように配設されたフォーカスリングと、
前記上部電極と前記下部電極との間に高周波電力を印加する高周波電源と、
前記処理チャンバーの上部に配設された環状の電磁石であって、前記被処理基板の中心と同心状の環状の形状とされ前記被処理基板の周縁部より外側に位置するように配設されたコイルを有する電磁石と、
前記コイルにのみ通電して磁界を発生させることにより、前記被処理基板の上部及び前記フォーカスリングの上部に形成されるプラズマシースの界面を平坦化する制御部と、
を具備したことを特徴とするプラズマ処理装置。 - 請求項5記載のプラズマ処理装置であって、
前記コイルに通電することによって発生させた磁界は、その水平磁界成分の径方向の分布が前記被処理基板の外周縁部より外側の部分でピークを有することを特徴とするプラズマ処理装置。 - 請求項5又は6記載のプラズマ処理装置であって、
前記制御部は、前記フォーカスリングの消耗状態に応じて前記電磁石に通電する電流を変化させることを特徴とするプラズマ処理装置。
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JP2014080039A JP6244518B2 (ja) | 2014-04-09 | 2014-04-09 | プラズマ処理方法及びプラズマ処理装置 |
PCT/JP2015/001913 WO2015155972A1 (ja) | 2014-04-09 | 2015-04-06 | プラズマ処理方法及びプラズマ処理装置 |
CN201580012852.5A CN106104768B (zh) | 2014-04-09 | 2015-04-06 | 等离子体处理方法和等离子体处理装置 |
KR1020167024685A KR102361757B1 (ko) | 2014-04-09 | 2015-04-06 | 플라즈마 처리 방법 및 플라즈마 처리 장치 |
US15/264,955 US10170284B2 (en) | 2014-04-09 | 2016-09-14 | Plasma processing method and plasma processing apparatus |
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US10622217B2 (en) | 2016-02-04 | 2020-04-14 | Samsung Electronics Co., Ltd. | Method of plasma etching and method of fabricating semiconductor device using the same |
JP6643950B2 (ja) * | 2016-05-23 | 2020-02-12 | 東京エレクトロン株式会社 | プラズマ処理方法 |
JP6877316B2 (ja) * | 2017-11-08 | 2021-05-26 | 東京エレクトロン株式会社 | エッチング方法 |
JP2019145397A (ja) | 2018-02-22 | 2019-08-29 | 東芝メモリ株式会社 | 半導体製造装置および半導体装置の製造方法 |
JP7055054B2 (ja) * | 2018-04-11 | 2022-04-15 | 東京エレクトロン株式会社 | プラズマ処理装置、プラズマ制御方法、及びプラズマ制御プログラム |
JP6846384B2 (ja) * | 2018-06-12 | 2021-03-24 | 東京エレクトロン株式会社 | プラズマ処理装置及びプラズマ処理装置の高周波電源を制御する方法 |
US11488808B2 (en) | 2018-11-30 | 2022-11-01 | Tokyo Electron Limited | Plasma processing apparatus, calculation method, and calculation program |
US20200286717A1 (en) * | 2019-03-08 | 2020-09-10 | Applied Materials, Inc. | Electrostatic chuck for high bias radio frequency (rf) power application in a plasma processing chamber |
JP7214562B2 (ja) | 2019-05-13 | 2023-01-30 | 東京エレクトロン株式会社 | プラズマ処理装置、算出方法および算出プログラム |
CN112466734A (zh) * | 2019-09-09 | 2021-03-09 | 东京毅力科创株式会社 | 等离子体处理装置及处理基板的方法 |
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WO2024018960A1 (ja) * | 2022-07-20 | 2024-01-25 | 東京エレクトロン株式会社 | プラズマ処理装置及びプラズマ処理方法 |
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JP5657262B2 (ja) * | 2009-03-27 | 2015-01-21 | 東京エレクトロン株式会社 | プラズマ処理装置 |
JP6018757B2 (ja) | 2012-01-18 | 2016-11-02 | 東京エレクトロン株式会社 | 基板処理装置 |
JP5808697B2 (ja) * | 2012-03-01 | 2015-11-10 | 株式会社日立ハイテクノロジーズ | ドライエッチング装置及びドライエッチング方法 |
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