JP6877581B2 - プラズマ処理装置及びそれを用いた試料の処理方法 - Google Patents
プラズマ処理装置及びそれを用いた試料の処理方法 Download PDFInfo
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- 238000012545 processing Methods 0.000 title claims description 95
- 238000003672 processing method Methods 0.000 title claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 65
- 239000007789 gas Substances 0.000 claims description 56
- 238000000034 method Methods 0.000 claims description 48
- 238000001179 sorption measurement Methods 0.000 claims description 27
- 238000003795 desorption Methods 0.000 claims description 26
- 238000009826 distribution Methods 0.000 claims description 17
- 238000001816 cooling Methods 0.000 claims description 15
- 239000003507 refrigerant Substances 0.000 claims description 7
- 239000000376 reactant Substances 0.000 claims description 4
- 229910052734 helium Inorganic materials 0.000 claims description 3
- 239000001307 helium Substances 0.000 claims description 3
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 claims description 3
- 239000007795 chemical reaction product Substances 0.000 claims 2
- 235000012431 wafers Nutrition 0.000 description 139
- 238000005530 etching Methods 0.000 description 47
- 239000010410 layer Substances 0.000 description 37
- 239000010453 quartz Substances 0.000 description 23
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 23
- 238000006243 chemical reaction Methods 0.000 description 19
- 238000009616 inductively coupled plasma Methods 0.000 description 12
- 150000003254 radicals Chemical class 0.000 description 9
- 239000000758 substrate Substances 0.000 description 8
- 239000010409 thin film Substances 0.000 description 8
- 239000000112 cooling gas Substances 0.000 description 7
- 230000005284 excitation Effects 0.000 description 7
- 239000010408 film Substances 0.000 description 6
- 239000002344 surface layer Substances 0.000 description 6
- 239000000126 substance Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000007935 neutral effect Effects 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 4
- 238000003860 storage Methods 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- 239000006185 dispersion Substances 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000012466 permeate Substances 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 239000004642 Polyimide Substances 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 229910052756 noble gas Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 230000002250 progressing effect Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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- 238000011144 upstream manufacturing Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
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Description
処理室1はベースチャンバー11により構成され、その中には被処理試料であるウエハ2(以下ウエハ2と記す)を戴置するための試料台であるウエハステージ4(以下、ステージ4と記す)が設置されている。処理室1の上方には、石英チャンバ12とICPコイル34及び高周波電源20を備えたプラズマ源が設置されており、プラズマ源にはICP(Inductively Coupled Plasma: 誘導結合プラズマ)放電方式を用いている。ICPプラズマ源を構成する円筒型の石英チャンバ12が処理室1の上方に設置されており、石英チャンバ12の外側にはICPコイル34が設置されている。
ステージ4の上面には、誘電体で形成された静電吸着膜31が配置されており、その内部に1対の電極32を内蔵している。1対の電極32は、それぞれ直流電源33に接続している。直流電源33により1対の電極32に電力を印加することにより静電吸着膜31の表面に静電気力が発生して、静電チャックとして作用する(以下、1対の電極32と静電吸着膜31とを総称して静電チャック30と記す)。直流電源33は制御ユニット40で制御される。
Claims (10)
- 処理ガスを導入したプラズマ発生室内にプラズマ発生手段でプラズマを発生させた状態で
前記プラズマ発生室と接続している処理室の内部の試料台に載置した試料の表面に反応物
の層を形成する吸着工程と、
前記処理室の外部に配置した加熱用ランプと前記試料台の内部に設置したヒータとで前
記試料を加熱して前記反応物の層を気化させて前記反応物の層を前記試料の表面から脱離
させる脱離工程と
前記脱離工程で加熱した前記試料を冷却する冷却工程と
を含む処理工程を複数回繰り返して前記試料を処理する試料の処理方法であって、
前記吸着工程において、前記加熱用ランプと前記ヒータとを制御部でフィードフォワー
ド制御して前記試料を第一の温度状態に設定し、
前記脱離工程において、前記制御部で前記加熱用ランプと前記ヒータとを制御して前記
試料を加熱するときに、前記ヒータをフィードバック制御して前記試料を第二の温度状態
に設定する
ことを特徴とする試料の処理方法。 - 請求項1記載の試料の処理方法であって、前記吸着工程において、予め求めておいた前
記加熱用ランプと前記ヒータと前記試料台に載置された前記試料の表面の温度との関
係に基づいて、前記制御部により前記ヒータと前記加熱用ランプとをフィードフォワード
制御して前記試料を前記第一の温度状態に設定することを特徴とする試料の処理方法。 - 請求項1記載の試料の処理方法であって、前記脱離工程において、前記制御部により、
前記試料台の内部に設置した温度計測素子で計測した前記試料台の温度に基づいて前記ヒ
ータをフィードバック制御することを特徴とする試料の処理方法。 - 請求項1記載の試料の処理方法であって、前記脱離工程において、前記制御部で前記加
熱用ランプをフィードフォワード制御すると共に前記ヒータをフィードバック制御して前
記試料を前記第二の温度状態に設定することにより、前記試料の周辺に対して前記試料の
中心付近の温度が高い所望の温度分布を発生させることを特徴とする試料の処理方法。 - 請求項1記載の試料の処理方法であって、前記脱離工程において、前記制御部で前記加
熱用ランプと前記ヒータとをフィードバック制御して前記試料を前記第二の温度状態に設
定することにより、前記試料の周辺に対して前記試料の中心付近の温度が高い所望の温度
分布を発生させることを特徴とする試料の処理方法。 - 請求項5記載の試料の処理方法であって、前記吸着工程と前記脱離工程とを繰り返して
実行するときに、前記脱離工程から前記吸着工程へ移るときに、前記試料と前記試料台と
の間にヘリウムガス(He)を供給して前記試料を冷却することを特徴とする試料の処理
方法。 - プラズマ発生室と、
前記プラズマ発生室の内部に処理ガスを供給する処理ガス供給部と、
前記プラズマ発生室の内部にプラズマを発生させるプラズマ発生部と、
試料を載置する試料台を内部に備えて前記プラズマ発生室と接続する処理室と、
前記処理室の外部に配置されて前記試料台に載置された前記試料を加熱する複数の加熱
用ランプと、
前記試料台の内部に設置されて前記試料台を加熱する複数のヒータと、
前記試料台の内部で前記複数のヒータに対応して設置されて前記試料台の温度を計測す
る複数の温度計測素子と、
前記処理ガス供給部と前記プラズマ発生部と前記複数の加熱用ランプと前記複数のヒー
タとを制御する制御部とを備えたプラズマ処理装置であって、
前記制御部は、前記プラズマ発生部を制御して前記プラズマ発生室の内部にプラズマを
発生させた状態で、予め求めておいた前記複数の加熱用ランプと前記複数のヒータと前記
試料台に載置された前記試料の表面の温度との関係に基づいて前記複数の加熱用ラン
プと前記複数のヒータとをフィードフォワード制御する機能と、前記プラズマ発生部を制
御して前記プラズマ発生室の内部の前記プラズマを消滅させた状態で前記複数の加熱用ラ
ンプを制御して前記試料を加熱すると共に前記複数の温度計測素子で計測した前記試料台
の温度に基づいて前記複数のヒータをフィードバック制御する機能を備えていることを特
徴とするプラズマ処理装置。 - 請求項7記載のプラズマ処理装置であって、前記試料台は、前記試料を静電吸着するた
めの静電チャックと、前記試料台に載置した前記試料と前期静電チャックとの間にヘリウ
ムガスを供給するガス供給部とを有し、前記試料台を冷却する冷媒を流す流路が前記試料
台の内部に形成されていることを特徴とするプラズマ処理装置。 - 請求項7又は8に記載のプラズマ処理装置であって、前記制御部は、前記プラズマ発生
部を制御して前記プラズマ発生室の内部にプラズマを発生させた状態で、予め求めておい
た前記複数の加熱用ランプと前記複数のヒータと前記試料台に載置された前記試料の
表面の温度との関係に基づいて前記複数の加熱用ランプと前記複数のヒータとをフィード
フォワード制御して前記試料を第1の温度に設定する機能と、前記プラズマ発生部を制御
して前記プラズマ発生室の内部の前記プラズマを消滅させた状態で前記複数の加熱用ラン
プを制御して前記試料を加熱すると共に前記複数の温度計測素子で計測した前記試料台の
温度分布に基づいて前記複数のヒータをフィードバック制御して前記試料を前記第1の温
度よりも高い第2の温度に設定する機能を備えていることを特徴とするプラズマ処理装置
。 - 請求項7又は8に記載のプラズマ処理装置であって、前記制御部は、前記プラズマ発生
部を制御して前記プラズマ発生室の内部の前記プラズマを消滅させた状態で前記複数の加
熱用ランプを制御して前記試料を加熱するときに、前記複数の温度計測素子で計測した前
記試料台の温度に基づいて、前記複数のランプと前記複数のヒータとをフィードバック制
御する機能を備えていることを特徴とするプラズマ処理装置。
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JP7244348B2 (ja) * | 2019-05-13 | 2023-03-22 | 東京エレクトロン株式会社 | プラズマ処理装置、温度制御方法および温度制御プログラム |
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US6313441B1 (en) * | 1999-08-18 | 2001-11-06 | Applied Materials, Inc. | Control system and method for providing variable ramp rate operation of a thermal cycling system |
JP2002164299A (ja) * | 2000-11-24 | 2002-06-07 | Ebara Corp | 基板加熱装置及び基板処理装置 |
US6673199B1 (en) * | 2001-03-07 | 2004-01-06 | Applied Materials, Inc. | Shaping a plasma with a magnetic field to control etch rate uniformity |
JP2004063670A (ja) * | 2002-07-26 | 2004-02-26 | Dainippon Screen Mfg Co Ltd | 制御装置および制御方法並びに熱処理装置および熱処理方法 |
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US8002946B2 (en) * | 2006-10-30 | 2011-08-23 | Applied Materials, Inc. | Mask etch plasma reactor with cathode providing a uniform distribution of etch rate |
US20090221150A1 (en) * | 2008-02-29 | 2009-09-03 | Applied Materials, Inc. | Etch rate and critical dimension uniformity by selection of focus ring material |
JP2011176128A (ja) * | 2010-02-24 | 2011-09-08 | Toshiba Corp | 半導体製造装置及び半導体装置の製造方法 |
JP6012933B2 (ja) * | 2011-04-26 | 2016-10-25 | 株式会社日立国際電気 | 基板処理装置、半導体装置の製造方法および基板処理方法 |
JP2013235912A (ja) | 2012-05-08 | 2013-11-21 | Tokyo Electron Ltd | 被処理基体をエッチングする方法、及びプラズマエッチング装置 |
JP6625891B2 (ja) | 2016-02-10 | 2019-12-25 | 株式会社日立ハイテクノロジーズ | 真空処理装置 |
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CN106533087B (zh) * | 2016-10-31 | 2018-06-12 | 北京金风科创风电设备有限公司 | 磁极防护层真空脱附浸渍固化系统、真空脱附装置及工艺 |
KR102702995B1 (ko) * | 2016-12-01 | 2024-09-04 | 삼성전자주식회사 | 이종의 메모리 소자들을 포함하는 집적회로 소자 및 그 제조 방법 |
JP7073098B2 (ja) * | 2017-12-27 | 2022-05-23 | 株式会社日立ハイテク | ウエハ処理方法およびウエハ処理装置 |
WO2019226341A1 (en) * | 2018-05-25 | 2019-11-28 | Lam Research Corporation | Thermal atomic layer etch with rapid temperature cycling |
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JPWO2020110192A1 (ja) | 2021-02-15 |
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