KR101333366B1 - 얼라인먼트 마크의 검출 방법 - Google Patents
얼라인먼트 마크의 검출 방법 Download PDFInfo
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- KR101333366B1 KR101333366B1 KR1020100100408A KR20100100408A KR101333366B1 KR 101333366 B1 KR101333366 B1 KR 101333366B1 KR 1020100100408 A KR1020100100408 A KR 1020100100408A KR 20100100408 A KR20100100408 A KR 20100100408A KR 101333366 B1 KR101333366 B1 KR 101333366B1
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- 238000000206 photolithography Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/027—Making masks on semiconductor bodies for further photolithographic processing not provided for in group H01L21/18 or H01L21/34
- H01L21/0271—Making masks on semiconductor bodies for further photolithographic processing not provided for in group H01L21/18 or H01L21/34 comprising organic layers
- H01L21/0273—Making masks on semiconductor bodies for further photolithographic processing not provided for in group H01L21/18 or H01L21/34 comprising organic layers characterised by the treatment of photoresist layers
- H01L21/0274—Photolithographic processes
- H01L21/0275—Photolithographic processes using lasers
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- G—PHYSICS
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- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/20—Exposure; Apparatus therefor
- G03F7/2051—Exposure without an original mask, e.g. using a programmed deflection of a point source, by scanning, by drawing with a light beam, using an addressed light or corpuscular source
- G03F7/2059—Exposure without an original mask, e.g. using a programmed deflection of a point source, by scanning, by drawing with a light beam, using an addressed light or corpuscular source using a scanning corpuscular radiation beam, e.g. an electron beam
- G03F7/2063—Exposure without an original mask, e.g. using a programmed deflection of a point source, by scanning, by drawing with a light beam, using an addressed light or corpuscular source using a scanning corpuscular radiation beam, e.g. an electron beam for the production of exposure masks or reticles
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- G—PHYSICS
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- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/70—Microphotolithographic exposure; Apparatus therefor
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- G—PHYSICS
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- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
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- G—PHYSICS
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- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/70—Microphotolithographic exposure; Apparatus therefor
- G03F7/70483—Information management; Active and passive control; Testing; Wafer monitoring, e.g. pattern monitoring
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- G03F7/706835—Metrology information management or control
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/70—Microphotolithographic exposure; Apparatus therefor
- G03F7/708—Construction of apparatus, e.g. environment aspects, hygiene aspects or materials
- G03F7/7085—Detection arrangement, e.g. detectors of apparatus alignment possibly mounted on wafers, exposure dose, photo-cleaning flux, stray light, thermal load
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- G—PHYSICS
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- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F9/00—Registration or positioning of originals, masks, frames, photographic sheets or textured or patterned surfaces, e.g. automatically
- G03F9/70—Registration or positioning of originals, masks, frames, photographic sheets or textured or patterned surfaces, e.g. automatically for microlithography
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F9/00—Registration or positioning of originals, masks, frames, photographic sheets or textured or patterned surfaces, e.g. automatically
- G03F9/70—Registration or positioning of originals, masks, frames, photographic sheets or textured or patterned surfaces, e.g. automatically for microlithography
- G03F9/7088—Alignment mark detection, e.g. TTR, TTL, off-axis detection, array detector, video detection
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/027—Making masks on semiconductor bodies for further photolithographic processing not provided for in group H01L21/18 or H01L21/34
- H01L21/033—Making masks on semiconductor bodies for further photolithographic processing not provided for in group H01L21/18 or H01L21/34 comprising inorganic layers
- H01L21/0334—Making masks on semiconductor bodies for further photolithographic processing not provided for in group H01L21/18 or H01L21/34 comprising inorganic layers characterised by their size, orientation, disposition, behaviour, shape, in horizontal or vertical plane
- H01L21/0337—Making masks on semiconductor bodies for further photolithographic processing not provided for in group H01L21/18 or H01L21/34 comprising inorganic layers characterised by their size, orientation, disposition, behaviour, shape, in horizontal or vertical plane characterised by the process involved to create the mask, e.g. lift-off masks, sidewalls, or to modify the mask, e.g. pre-treatment, post-treatment
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- Condensed Matter Physics & Semiconductors (AREA)
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- Toxicology (AREA)
- Optics & Photonics (AREA)
- Exposure And Positioning Against Photoresist Photosensitive Materials (AREA)
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- Exposure Of Semiconductors, Excluding Electron Or Ion Beam Exposure (AREA)
Abstract
얼라인먼트 현미경에 의해 워크 마크의 패턴의 화상을 수상하여, 이 화상을 제어부에 보낸다. 제어부에서는, 취득한 패턴의 화상[(a)(d)]의 중심 부근으로부터 복수의 방사 방향에 대해서, 거리에 대한 휘도의 분포를 구한다[(b)]. 그리고, 구한 휘도 분포를 미분하여, 거리에 대한 휘도의 변화인 미분값을 구하고[(c)], 미분값의 극대값의 위치를, 각 방사 방향에 대해서 구한다. 구한 극대값의 위치를, 각각 하나씩 추출하여 조합하고, 극대값의 위치를 지나는 폐곡선에 근사한 원을 복수 구한다. 이 복수의 원의 반경과, 워크·얼라인먼트 마크의 반경을 비교하여, 상기 복수의 원 중에서 반경이 가장 가까운 원을 선택하여, 그 원의 중심 위치를 워크·얼라인먼트 마크의 위치로 한다.
Description
도 2는 검출된 화상(모식도)과, 이 화상의 방사 방향의 휘도 분포와 그 미분값을 나타낸 도이다.
도 3은 화상의 휘도의 미분값의 극대값 또는 극소값의 위치를 잇는 폐곡선에 근사한 복수의 원을 나타낸 도이다.
도 4는 모니터 상에 표시되는 워크 마크 이미지를 나타낸 도이다.
도 5는 근사된 원의 스코어를 설명한 도이다.
도 6은 워크 마크를 검출하는 얼라인먼트 현미경(10)의 개략 구성을 나타낸 도이다.
도 7은 엣지 검출에 의한 패턴 검출 방법을 설명한 도이다.
도 8은 워크 마크로서 이용되는 비아 홀의 형상예를 나타낸 도이다.
도 9는 레지스트 필름에 덮인 비아 홀을 촬상한 화상예를 나타낸 도이다.
도 10은 레지스트 필름에 덮인 비아 홀의 외관을 설명한 도이다.
3 마스크 스테이지 구동 기구 4 워크 스테이지 구동 기구
10 얼라인먼트 현미경 10a 하프 미러
10b CCD 카메라 10c 조명 수단
11 제어부 1la 화상 처리부
11b 기억부 11c 워크 마크 중심 위치 검출부
11d 위치 맞춤 제어부 11e 등록부
12 모니터 L1, L2 렌즈
M 마스크 MS 마스크 스테이지
MAM 마스크 마크(마스크·얼라인먼트 마크)
MP 마스크 패턴 W 워크
WS 워크 스테이지
WAM 워크 마크(워크·얼라인먼트 마크)
Claims (1)
- 워크 상에 형성한 원형의 움푹 패인 곳을 워크·얼라인먼트 마크로서 검출하는 워크·얼라인먼트 마크의 검출 방법으로서,
워크에 형성된 패턴의 화상을 취득하는 제1 공정과,
상기 취득한 패턴의 화상의 중심 부근으로부터, 혹은 중심 방향을 향하는 복수의 방사 방향에 대해서, 거리에 대한 휘도의 분포를 구하는 제2 공정과,
상기 구한 휘도 분포를 미분하여, 거리에 대한 휘도의 변화인 미분값을 구하고, 그 미분값의 극대값 또는 극소값의 위치를, 상기 각 방사 방향에 대해서 구하는 제3 공정과,
상기 각 방사 방향에 대해서 구한 상기 극대값 또는 극소값의 위치를, 각각 하나씩 추출하여 조합하고, 근사되는 원을 복수 구하는 제4 공정과,
상기 복수의 원의 반경 또는 직경과, 원형인 워크·얼라인먼트 마크의 반경 또는 직경을 비교하여, 상기 복수의 원 중에서, 워크·얼라인먼트 마크의 반경 또는 직경과 가장 가까운 원을 선택하는 제5 공정과,
상기 선택한 원의 중심 위치를 연산하여, 그 중심 위치를 워크·얼라인먼트 마크의 위치로 하는 제6 공정을 포함하는 것을 특징으로 하는 워크·얼라인먼트 마크의 검출 방법.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2009260886A JP5476938B2 (ja) | 2009-11-16 | 2009-11-16 | アライメントマークの検出方法 |
JPJP-P-2009-260886 | 2009-11-16 |
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KR20110053898A KR20110053898A (ko) | 2011-05-24 |
KR101333366B1 true KR101333366B1 (ko) | 2013-11-28 |
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Country | Link |
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JP (1) | JP5476938B2 (ko) |
KR (1) | KR101333366B1 (ko) |
CN (1) | CN102063016A (ko) |
TW (1) | TWI471706B (ko) |
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JP5556774B2 (ja) * | 2011-09-16 | 2014-07-23 | ウシオ電機株式会社 | 露光装置 |
JP6223091B2 (ja) * | 2013-09-25 | 2017-11-01 | 株式会社Screenホールディングス | 位置計測装置、アライメント装置、パターン描画装置および位置計測方法 |
JP6282907B2 (ja) * | 2014-03-18 | 2018-02-21 | 株式会社東光高岳 | 画像処理装置、立体形状計測装置および画像処理方法 |
JP6590631B2 (ja) * | 2015-10-16 | 2019-10-16 | 株式会社キーエンス | 画像検査装置 |
CN105182702B (zh) * | 2015-10-30 | 2017-08-11 | 京东方科技集团股份有限公司 | 对位标记搜寻方法、显示基板和显示装置 |
CN109556509B (zh) * | 2018-01-04 | 2020-07-03 | 奥特斯(中国)有限公司 | 对准标记的边缘锐度评估 |
CN108801177B (zh) * | 2018-06-15 | 2020-05-05 | 湖南品胜生物技术有限公司 | 一种用于显微系统自动调节垂直度的方法及其校准玻片 |
KR102779446B1 (ko) * | 2019-03-13 | 2025-03-12 | 삼성디스플레이 주식회사 | 표시 모듈 검사 장치 및 표시 모듈 검사 방법 |
CN113048905B (zh) * | 2019-12-27 | 2022-08-19 | 上海微电子装备(集团)股份有限公司 | 对准标记图像制作方法、对准标记测量方法及测量装置 |
CN111060291B (zh) * | 2019-12-27 | 2021-09-17 | 武汉天马微电子有限公司 | 一种对位方法、亮度确定方法及装置 |
JP7607423B2 (ja) * | 2020-09-23 | 2024-12-27 | キヤノン株式会社 | リソグラフィ装置の制御方法、リソグラフィ装置、および物品製造方法 |
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JPH0799381A (ja) * | 1993-09-28 | 1995-04-11 | Sony Corp | 位置決め方法及び位置決め装置 |
JP2004014693A (ja) | 2002-06-05 | 2004-01-15 | Pioneer Electronic Corp | アライメント・マーク位置検出方法 |
JP2008014700A (ja) | 2006-07-04 | 2008-01-24 | Olympus Corp | ワークの検査方法及びワーク検査装置 |
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