JP2015525959A - 集束イオン・ビーム処理の終点決定 - Google Patents
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Abstract
Description
Claims (17)
- 荷電粒子ビームで加工物を自動的に処理する方法であって、
ミリングがいつ完了するかを指定する判定基準を定めるステップと、
断面を露出させるために、前記加工物に向かってイオン・ビームを導くステップと、
前記断面の電子ビーム画像を形成するために、前記断面に向かって電子ビームを導くステップと、
前記判定基準が満たされているかどうかを判定するために、前記電子ビーム画像を自動的に評価するステップと、
前記判定基準が満たされていない場合に、前記判定基準が満たされるまで繰り返し、新たな断面を露出させるために前記イオン・ビームを導くステップと、前記断面の画像を形成するために前記電子ビームを導くステップと
を含む方法。 - 前記電子ビーム画像を自動的に評価するステップが、前記画像中の特徴部分によって画定された寸法を決定することを含む、請求項1に記載の方法。
- 前記電子ビーム画像を自動的に評価するステップが、前記画像中の特徴部分によって画定された寸法を決定することを含み、2本の線間の角度がいつ指定された値よりも小さくなるかを決定することを含む、請求項1に記載の方法。
- 前記電子ビーム画像を自動的に評価するステップが、前記画像中の特徴部分によって画定された寸法を決定することを含み、2つの特徴部分間の距離がいつ指定された値に等しくなるかを決定することを含む、請求項1に記載の方法。
- 前記電子ビーム画像を自動的に評価するステップが、前記電子ビーム画像内においてエッジを自動的に見つけ出すこと、および前記エッジ間の寸法関係を決定することを含む、請求項1に記載の方法。
- エッジを見つけ出すことが、画像内の画素間のコントラストの変化を使用してエッジを見つけ出すことを使用することを含む、請求項2に記載の方法。
- エッジを見つけ出すことが、エッジの検出を改善するために平滑化アルゴリズムを適用することを含む、請求項6に記載の方法。
- ミリングがいつ完了するかを指定する判定基準を定めるステップが、2つの特徴部分間の距離を指定することを含む、請求項1に記載の方法。
- ミリングがいつ完了をするかを指定する判定基準を定めるステップが、2つの特徴部分間の角度を指定することを含む、請求項1に記載の方法。
- 新たな断面を露出させるために前記イオン・ビームを繰り返し導くステップが、前記繰返しのうちの少なくとも1回の繰返しにおいて、前記断面から10nm未満の材料を除去するために前記イオン・ビームを導くことを含む、請求項1に記載の方法。
- 新たな断面を露出させるために前記イオン・ビームを繰り返し導くステップが、前記繰返しのうちの少なくとも1回の繰返しにおいて、前記断面から5nm未満の材料を除去するために前記イオン・ビームを導くことを含む、請求項10に記載の方法。
- 前記電子ビーム画像を自動的に評価するステップが、前記電子ビーム画像を1つまたは複数の基準画像と比較することを含む、請求項1に記載の方法。
- 断面を露出させるためにイオン・ビームを導くステップが、構造的特徴部分を含む断面を露出させるためにイオン・ビームを導くことを含む、請求項1に記載の方法。
- 断面を露出させるためにイオン・ビームを導くステップが、欠陥を含む断面を露出させるためにイオン・ビームを導くことを含む、請求項1に記載の方法。
- 断面を露出させるために、前記加工物に向かってイオン・ビームを導くステップが、TEMで見るための100nm未満の厚さを有する薄片の片側を薄くするためにイオン・ビームを導くことを含む、請求項1に記載の方法。
- 断面を露出させるために、前記加工物に向かってイオン・ビームを導くステップが、加工物に垂直壁を形成するためにイオン・ビームを導くことを含み、前記断面に向かって電子ビームを導くステップが、前記垂直壁のSEM画像を形成することを含む、請求項1に記載の方法。
- 加工物を収容する加工物真空室と、
イオン・ビームを生成し、前記イオン・ビームを前記加工物に導くイオン・ビーム・カラムと、
電子ビームを生成し、前記電子ビームを前記加工物に導く電子ビーム・カラムと、2次粒子を検出し、前記加工物の一部分の画像を形成する2次粒子検出器と、
コンピュータ命令を実行する処理装置と、
請求項1の各ステップを実行するコンピュータ命令を含むコンピュータ記憶装置と
を備える荷電粒子ビーム・システム。
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PCT/US2012/046975 WO2014014446A1 (en) | 2012-07-16 | 2012-07-16 | Endpointing for focused ion beam processing |
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US (2) | US10204762B2 (ja) |
EP (1) | EP2873088A4 (ja) |
JP (1) | JP6113842B2 (ja) |
CN (1) | CN104428867B (ja) |
TW (1) | TWI620226B (ja) |
WO (1) | WO2014014446A1 (ja) |
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JP2020161268A (ja) * | 2019-03-26 | 2020-10-01 | 株式会社日立ハイテクサイエンス | 荷電粒子ビーム装置、及び制御方法 |
WO2023053187A1 (ja) * | 2021-09-28 | 2023-04-06 | 株式会社日立ハイテクサイエンス | 加工方法及び荷電粒子ビーム装置 |
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CN104428867A (zh) | 2015-03-18 |
EP2873088A1 (en) | 2015-05-20 |
US10529538B2 (en) | 2020-01-07 |
TWI620226B (zh) | 2018-04-01 |
JP6113842B2 (ja) | 2017-04-12 |
US20190172680A1 (en) | 2019-06-06 |
CN104428867B (zh) | 2018-10-16 |
EP2873088A4 (en) | 2015-08-05 |
US20160126060A1 (en) | 2016-05-05 |
WO2014014446A1 (en) | 2014-01-23 |
US10204762B2 (en) | 2019-02-12 |
TW201409525A (zh) | 2014-03-01 |
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