KR20200123466A - 계측 방법 및 관련 장치 - Google Patents
계측 방법 및 관련 장치 Download PDFInfo
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Abstract
Description
도 1은 반도체 디바이스용 생산 설비를 형성하는 다른 장치와 함께 리소그래피 장치를 도시하고 있다.
도 2는 본 발명의 실시예에 따른 방법을 설명하는 제1의 예시적인 흐름도이다.
도 3은 제안된 방법의 제1 및 제2 반복을 뒤따르는 기준 SEM 신호의 플롯(plot)이다.
도 4는 본 발명의 실시예에 따른 방법을 설명하는 제2의 예시적인 흐름도이다.
Claims (15)
- 노이즈를 포함하는 이미지 내에 포함된 피처의 에지에 관한 에지 위치를 결정하는 방법에 있어서,
상기 이미지로부터 기준 신호를 결정하는 것; 및
상기 기준 신호에 대하여 상기 에지 위치를 결정하는 것을 포함하는 방법. - 제1항에 있어서, 상기 이미지는 주사 전자 현미경 기술에 의하여 획득된 방법.
- 제1항에 있어서, 상기 이미지로부터 기준 신호를 결정하는 것은,
상기 기준 신호를 포함하는 필터링된 이미지를 획득하기 위해, 초기 윤곽에 평행한 방향으로 1차원 저역 통과 필터를 상기 이미지에 적용하는 것을 포함하는 방법. - 제3항에 있어서, 상기 초기 윤곽이 결정되고 있는 상기 에지의 추정을 포함하도록 상기 초기 윤곽을 추정하는 단계를 포함하는 방법.
- 제3항에 있어서, 상기 1차원 저역 통과 필터는 1-차원 가우시안 블러( Gaussian blur)를 포함하는 방법.
- 제3항에 있어서, 상기 1차원 저역 통과 필터의 적용 전에, 상기 초기 윤곽과 평행한 것으로 한정된 제1 치수와 상기 초기 윤곽에 수직인 것으로 한정된 제2 치수를 포함하는 변환된 공간 내의 변환된 이미지를 획득하기 위해, 상기 방법은 상기 에지를 포함하는 이미지의 적어도 일부를 변환시키는 것을 포함하는 방법.
- 제6항에 있어서, 상기 필터링된 이미지와 상기 변환된 이미지 중 하나를 상기 필터링된 이미지와 상기 변환된 이미지 중 다른 하나에 매칭하여 매칭된 윤곽을 결정하는 것을 포함하며, 상기 매칭된 윤곽은 상기 에지 위치의 매칭된 추정을 포함하는 방법.
- 제7항에 있어서, 상기 매칭하는 것은 상기 필터링된 이미지를 컬럼 단위로 상기 변환된 이미지에 매칭하는 것을 포함하며, 각 컬럼은 상기 이미지의 픽셀의 폭에 의하여 한정되는 방법.
- 제8항에 있어서, 상기 매칭하는 것은 상기 필터링된 이미지의 컬럼과 상기 변환된 이미지의 대응 컬럼의 상호 상관 관계를 포함하는 방법.
- 제9항에 있어서, 상기 상호 상관 관계는 상기 컬럼을 컬럼 방향을 따라 서로에 대하여 시프팅하는 것만을 포함하여 상기 필터링된 이미지와 상기 변환된 이미지 사이의 최상의 매칭을 획득하는 방법.
- 제7항에 있어서, 상기 매칭된 윤곽 또는 임계 윤곽을 각 부가적인 반복에 대한 상기 초기 윤곽으로서 이용하여, 상기 방법의 적어도 하나의 부가적인 반복을 수행함으로써 상기 방법을 반복적으로 수행하는 것을 포함하는 방법.
- 제1항에 있어서, 상기 이미지는 상기 피처를 형성하기 위한 리소그래피 공정의 수행을 모니터링하기 위하여 상기 피처에 관한 매개변수의 측정을 위해 획득되는 방법.
- 제12항에 있어서, 상기 매개변수는 임계 치수, 라인 에지 러프니스, 라인 폭 러프니스, 국부적인 임계 치수 균일성 및 에지 배치 오차 중 하나 이상을 포함하는 방법.
- 기판 상의 하나 이상의 피처를 이미지 처리하도록 작동 가능하며, 제1항의 방법을 수행하도록 구성된 컴퓨팅 장치를 포함하는 주사 전자 현미경 검사 장치.
- 적절한 장치에서 구동될 때 제1항의 방법을 수행하도록 작동 가능한 프로그램 명령을 포함하는 컴퓨터 프로그램.
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Application Number | Priority Date | Filing Date | Title |
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EP18163680.4 | 2018-03-23 | ||
EP18163680.4A EP3543791A1 (en) | 2018-03-23 | 2018-03-23 | Method of metrology and associated apparatuses |
PCT/EP2019/055714 WO2019179786A1 (en) | 2018-03-23 | 2019-03-07 | Method of metrology and associated apparatuses |
Publications (2)
Publication Number | Publication Date |
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KR20200123466A true KR20200123466A (ko) | 2020-10-29 |
KR102517322B1 KR102517322B1 (ko) | 2023-04-03 |
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KR1020207027309A KR102517322B1 (ko) | 2018-03-23 | 2019-03-07 | 계측 방법 및 관련 장치 |
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US (2) | US11112703B2 (ko) |
EP (1) | EP3543791A1 (ko) |
KR (1) | KR102517322B1 (ko) |
CN (2) | CN111886548B (ko) |
TW (2) | TWI836362B (ko) |
WO (1) | WO2019179786A1 (ko) |
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EP3543791A1 (en) | 2018-03-23 | 2019-09-25 | ASML Netherlands B.V. | Method of metrology and associated apparatuses |
JP7264751B2 (ja) * | 2019-07-08 | 2023-04-25 | 株式会社ニューフレアテクノロジー | 検査装置及び検査方法 |
WO2024170211A1 (en) * | 2023-02-13 | 2024-08-22 | Asml Netherlands B.V. | Method and system for identifying a center of a pattern using automatic thresholding |
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- 2018-03-23 EP EP18163680.4A patent/EP3543791A1/en not_active Withdrawn
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- 2019-03-18 TW TW108109060A patent/TWI758592B/zh active
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US7269287B2 (en) * | 2005-10-25 | 2007-09-11 | Hitachi High-Technologies Corporation | Method and apparatus for measuring dimension using electron microscope |
US20080197280A1 (en) * | 2007-02-21 | 2008-08-21 | Maki Tanaka | Method and apparatus for measuring pattern dimensions |
US20150228063A1 (en) * | 2012-10-15 | 2015-08-13 | Hitachi High-Technologies Corporation | Pattern Inspecting and Measuring Device and Program |
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CN111886548A (zh) | 2020-11-03 |
EP3543791A1 (en) | 2019-09-25 |
US11733614B2 (en) | 2023-08-22 |
TWI758592B (zh) | 2022-03-21 |
TW202223536A (zh) | 2022-06-16 |
US20190294055A1 (en) | 2019-09-26 |
CN111886548B (zh) | 2023-05-26 |
KR102517322B1 (ko) | 2023-04-03 |
US20220107571A1 (en) | 2022-04-07 |
US11112703B2 (en) | 2021-09-07 |
CN116559495A (zh) | 2023-08-08 |
TW201945841A (zh) | 2019-12-01 |
WO2019179786A1 (en) | 2019-09-26 |
TWI836362B (zh) | 2024-03-21 |
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