JP2016219673A - プラズマ処理装置およびプラズマ処理方法 - Google Patents
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- 229910052710 silicon Inorganic materials 0.000 description 2
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- 238000005513 bias potential Methods 0.000 description 1
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- 239000012528 membrane Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000009832 plasma treatment Methods 0.000 description 1
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- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
- H01L21/302—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to change their surface-physical characteristics or shape, e.g. etching, polishing, cutting
- H01L21/306—Chemical or electrical treatment, e.g. electrolytic etching
- H01L21/3065—Plasma etching; Reactive-ion etching
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- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
- H01J37/32—Gas-filled discharge tubes
- H01J37/32009—Arrangements for generation of plasma specially adapted for examination or treatment of objects, e.g. plasma sources
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- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
- H01L21/302—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to change their surface-physical characteristics or shape, e.g. etching, polishing, cutting
- H01L21/306—Chemical or electrical treatment, e.g. electrolytic etching
- H01L21/308—Chemical or electrical treatment, e.g. electrolytic etching using masks
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Abstract
Description
Yi = b1・yi + b2・yi-1 + b3・yi-2 - [ a2・Yi-1 + a3・Yi-2]・・・(1)
j=2
di = Σwj・Yi+j ・・・(2)
j=-2
Di = b1・di + b2・di-1 + b3・di-2 - [ a2・Di-1 + a3・Di-2 ]・・・(3)
2…真空処理室
3…プラズマ
4…ウエハ
5…試料台
7…光ファイバ
8…光ファイバ
9…膜厚測定器
10…分光器
11…第1デジタルフィルタ
12…微分器
13…第2デジタルフィルタ
14…微分波形比較器
15…微分波形パターンデータベース
16…分光器
17…回帰分析器
21…終点判定器
22…表示器。
Claims (10)
- 真空容器内部の処理室内に処理対象のウエハを配置し当該処理室内にプラズマを形成して予め前記ウエハ上面に配置され複数の膜層を有した膜構造の処理対象の膜をエッチングするプラズマ処理方法であって、
前記膜構造が少なくとも1つの膜層を含み溝構造を有した下層の膜と前記溝構造の内側及び上端を被って上方に積層された少なくとも1つの膜層を有する上層の膜とを有したものであって、
前記下層の膜の前記溝構造の上端を露出するまで前記上層の膜をエッチングして除去する第1のステップと、前記上層の膜の前記溝構造の内側の膜層をエッチング処理する第2のステップと、前記第1のステップが終了した際の前記下層の膜の溝構造の前記内側の膜層の厚さの値を用いて前記第2のステップの終点を判定する判定ステップとを備えたプラズマ処理方法。 - 請求項1に記載のプラズマ処理方法であって、
前記第2のステップ中に前記膜構造から得られた複数の波長の干渉光の強度を用いて検出された前記溝構造の内側の前記上層の膜の前記膜層の残り膜厚さの値を用いて前記第2のステップの終点を判定する前記ステップとを備えたプラズマ処理方法。 - 請求項1また2に記載のプラズマ処理方法であって、
前記溝構造の内側の前記上層の膜の膜層が前記溝構造の上端上方の膜層と同じ材料で構成されたプラズマ処理方法。 - 請求項1乃至3の何れかに記載のプラズマ処理方法であって、
前記下層の膜の前記溝構造の上端の露出による前記プラズマの発光の変化に基づいて第1のステップの終点を判定するプラズマ処理方法。 - 請求項1乃至4の何れかに記載のプラズマ処理方法であって、
前記膜構造は前記溝構造の内側の前記膜層の反射率が当該溝構造の上端を構成する膜層の反射率より大きいプラズマ処理方法。 - 真空容器内部に配置された処理室内に配置された処理対象のウエハの上方に形成されたプラズマを用いて当該ウエハ上面に予め配置され複数膜層を有した膜構造の処理対象の膜をエッチングするプラズマ処理装置であって、
前記膜構造が少なくとも1つの膜層を含み溝構造を有した下層の膜と前記溝構造の内側及び上端を被って上方に積層された少なくとも1つの膜層を有する上層の膜とを有したものであって、
前記溝構造の上方の前記上層の膜をエッチングする第1のエッチングよる前記溝構造の上端の露出を検出する検出器と、前記溝構造の上端が露出した後に前記溝構造の内側の膜層をエッチングする第2のエッチングの終点を前記溝構造の上端の露出が検出された際の前記溝構造の内側の前記膜層の深さの値を用いて判定する判定器とを備えたプラズマ処理装置。 - 請求項6に記載のプラズマ処理装置であって、
前記第2のエッチング中の前記膜構造から得られた複数の波長の干渉光の強度を用いて前記溝構造の内側の前記上層の膜の前記膜層の残り膜厚さを検出する膜厚さ検出器と、当該膜厚検出器により検出された結果を用いて前記第2のエッチングの終点を判定する前記判定器とを備えたプラズマ処理装置。 - 請求項6また7に記載のプラズマ処理装置であって、
前記溝構造の内側の前記上層の膜の膜層が前記溝構造の上端上方の膜層と同じ材料で構成されたプラズマ処理装置。 - 請求項6乃至8の何れかに記載のプラズマ処理装置であって、
前記溝構造の上端の露出を検出する検出器は当該露出による前記プラズマの発光の変化を検出するプラズマ処理装置。 - 請求項6乃至9の何れかに記載のプラズマ処理装置であって、
前記膜構造は前記溝構造の内側の前記膜層の反射率が当該溝構造の上端を構成する膜層の反射率より大きいプラズマ処理装置。
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KR1020160020340A KR101800648B1 (ko) | 2015-05-25 | 2016-02-22 | 플라즈마 처리 장치 및 플라즈마 처리 방법 |
US15/060,822 US9805940B2 (en) | 2015-05-25 | 2016-03-04 | Plasma processing apparatus and plasma processing method |
TW105107199A TWI615901B (zh) | 2015-05-25 | 2016-03-09 | 電漿處理裝置及電漿處理方法 |
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JP6837886B2 (ja) * | 2017-03-21 | 2021-03-03 | 株式会社日立ハイテク | プラズマ処理装置およびプラズマ処理方法 |
EP3415988A1 (en) * | 2017-06-14 | 2018-12-19 | ASML Netherlands B.V. | Device manufacturing methods |
KR102429079B1 (ko) * | 2019-12-23 | 2022-08-03 | 주식회사 히타치하이테크 | 플라스마 처리 방법 및 플라스마 처리에 이용하는 파장 선택 방법 |
US11875978B2 (en) * | 2020-06-16 | 2024-01-16 | Hitachi High-Tech Corporation | Plasma processing apparatus and plasma processing method |
US12062530B2 (en) * | 2020-06-25 | 2024-08-13 | Hitachi High-Tech Corporation | Vacuum processing apparatus and vacuum processing method |
US20230215710A1 (en) * | 2020-09-17 | 2023-07-06 | Hitachi High-Tech Corporation | Plasma processing method and plasma processing apparatus |
US11437289B2 (en) * | 2020-09-30 | 2022-09-06 | Hitachi High-Tech Corporation | Plasma processing apparatus and plasma processing method |
US12051575B2 (en) | 2020-09-30 | 2024-07-30 | Hitachi High-Tech Corporation | Plasma processing apparatus and plasma processing method |
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JP2003083720A (ja) * | 2001-09-17 | 2003-03-19 | Hitachi Ltd | 半導体素子製造プロセスにおける膜の処理量測定方法と装置、及びそれを用いた被処理材の処理方法と装置、及びそれを用いたプロセスの終点判定方法と装置 |
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