JP7308284B2 - 改善された計量用自己モアレ格子デザイン - Google Patents
改善された計量用自己モアレ格子デザイン Download PDFInfo
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- 238000013461 design Methods 0.000 title description 25
- 239000011295 pitch Substances 0.000 claims description 169
- 230000000737 periodic effect Effects 0.000 claims description 57
- 239000010410 layer Substances 0.000 claims description 46
- 238000000034 method Methods 0.000 claims description 22
- 239000004065 semiconductor Substances 0.000 claims description 21
- 239000011229 interlayer Substances 0.000 claims description 3
- 238000005303 weighing Methods 0.000 claims description 3
- 230000003287 optical effect Effects 0.000 description 17
- 238000005259 measurement Methods 0.000 description 16
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000005684 electric field Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001902 propagating effect Effects 0.000 description 1
- 238000007665 sagging Methods 0.000 description 1
- 238000005389 semiconductor device fabrication Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 230000001131 transforming effect Effects 0.000 description 1
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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
- G03F7/70483—Information management; Active and passive control; Testing; Wafer monitoring, e.g. pattern monitoring
- G03F7/70605—Workpiece metrology
- G03F7/70681—Metrology strategies
- G03F7/70683—Mark designs
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/60—Systems using moiré fringes
-
- 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
- G03F7/70483—Information management; Active and passive control; Testing; Wafer monitoring, e.g. pattern monitoring
- G03F7/70605—Workpiece metrology
- G03F7/70616—Monitoring the printed patterns
- G03F7/70633—Overlay, i.e. relative alignment between patterns printed by separate exposures in different layers, or in the same layer in multiple exposures or stitching
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/24—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures
- G01B11/25—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures by projecting a pattern, e.g. one or more lines, moiré fringes on the object
-
- 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
- G03F7/70483—Information management; Active and passive control; Testing; Wafer monitoring, e.g. pattern monitoring
- G03F7/70605—Workpiece metrology
- G03F7/70616—Monitoring the printed patterns
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Length Measuring Devices By Optical Means (AREA)
- Exposure Of Semiconductors, Excluding Electron Or Ion Beam Exposure (AREA)
- Diffracting Gratings Or Hologram Optical Elements (AREA)
Description
ここに、「OVL計測用自己モアレターゲット設計の新規手法」(NEW APPROACH FOR SELF-MOIRE TARGET DESIGN FOR OVL MEASUREMENT)と題する2019年3月25日付米国仮特許出願第62/823342号を参照し、参照によりその開示内容を繰り入れ且つそれに基づく優先権を主張する。
共に「非分解デバイス類似ピッチ計測用自己モアレターゲット設計原理」(SELF-MOIRE TARGET DESIGN PRINCIPLES FOR MEASURING UNRESOLVED DEVICE-LIKE PITCHES)と題し、本発明のそれと同じ譲受人に譲受されている2016年5月19日出願の特許文献1及び2017年12月1日出願の特許文献2。
Claims (20)
- 計量用の格子であって、
ピッチPを有する複数個のユニットが備わる周期構造を備え、それら複数個のユニットのうち少なくとも1個のユニットが、
前記ピッチPより小さい第1サブピッチP1を有する少なくとも1個の第1周期サブ構造と、
前記少なくとも1個のユニット内で前記第1周期サブ構造に対し横並び配列で分離されていて非交絡の少なくとも1個の第2周期サブ構造と、を備え、その第2周期サブ構造が、前記ピッチPより小さく且つ前記第1サブピッチP1とは異なる第2サブピッチP2を有し、少なくとも一通りのモアレピッチPm=P1・P2/(P2-P1)がもたらされるようP1及びP2が選定されていて、当該ピッチPが当該第1サブピッチP1及び当該第2サブピッチP2の整数倍である格子。 - 請求項1に係る格子であって、P1及びP2が半導体デバイス類似ピッチである格子。
- 請求項2に係る格子であって、P/Pmが1に実質的に等しい格子。
- 請求項2に係る格子であって、P/Pmが2に実質的に等しい格子。
- 請求項1に係る格子であって、P≧200nmである格子。
- 請求項5に係る格子であって、P1及びP2が200nm未満である格子。
- 請求項1に係る格子であって、前記第1及び第2周期サブ構造が共通軸沿いにあり、P1及びP2がその共通軸沿いで定義される格子。
- 半導体デバイスの層間位置ずれを計測するための計量ターゲットであって、少なくとも2個の格子を備え、当該少なくとも2個の格子のうち少なくとも1個が請求項1の格子を構成していて、当該少なくとも2個の格子が相互積層構成の態で配列されている計量ターゲット。
- 請求項8に係る計量ターゲットであって、前記少なくとも2個の格子が同じモアレピッチを呈する計量ターゲット。
- 請求項8に係る計量ターゲットであって、前記少なくとも2個の格子が相異なるモアレピッチを呈する計量ターゲット。
- 計量用の格子を形成する方法であって、
ピッチPを有する複数個のユニットが備わる周期構造を準備し、但しそれら複数個のユニットのうち少なくとも1個のユニットを、
前記ピッチPより小さい第1サブピッチP1を有する少なくとも1個の第1周期サブ構造と、
前記少なくとも1個のユニット内で前記第1周期サブ構造に対し横並び配列で分離されていて非交絡の少なくとも1個の第2周期サブ構造と、を備えるものとし、その第2周期サブ構造を、前記ピッチPより小さく且つ前記第1サブピッチP1とは異なる第2サブピッチP2を有するものとし、少なくとも一通りのモアレピッチPm=P1・P2/(P2ーP1)がもたらされるようP1及びP2を選定し、当該ピッチPを当該第1サブピッチP1及び当該第2サブピッチP2の整数倍とする方法。 - 請求項11に係る方法であって、P1及びP2が半導体デバイス類似ピッチである方法。
- 請求項12に係る方法であって、P/Pmが1に実質的に等しい方法。
- 請求項12に係る方法であって、P/Pmが2に実質的に等しい方法。
- 請求項11に係る方法であって、P≧200nmである方法。
- 請求項15に係る方法であって、P1及びP2が200nm未満である方法。
- 請求項11に係る方法であって、更に、共通軸沿いに存することとなるよう前記第1及び第2周期サブ構造を配列し、P1及びP2をその共通軸沿いで定義する方法。
- 請求項11に係る方法であって、更に、半導体デバイスの層間位置ずれを計測するための計量ターゲットが形成されるよう少なくとも2個の格子を相互積層構成の態で配列し、当該少なくとも2個の格子のうち少なくとも1個を、請求項11の格子を構成するものとする方法。
- 請求項18に係る方法であって、前記少なくとも2個の格子が同じモアレピッチを呈する方法。
- 請求項18に係る方法であって、前記少なくとも2個の格子が相異なるモアレピッチを呈する方法。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201962823342P | 2019-03-25 | 2019-03-25 | |
US62/823,342 | 2019-03-25 | ||
PCT/US2020/023741 WO2020197950A1 (en) | 2019-03-25 | 2020-03-20 | Improved self-moiré grating design for use in metrology |
Publications (3)
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JP2022526933A JP2022526933A (ja) | 2022-05-27 |
JPWO2020197950A5 JPWO2020197950A5 (ja) | 2023-03-24 |
JP7308284B2 true JP7308284B2 (ja) | 2023-07-13 |
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Country | Link |
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US (1) | US11614692B2 (ja) |
EP (1) | EP3938837A4 (ja) |
JP (1) | JP7308284B2 (ja) |
KR (1) | KR102637420B1 (ja) |
CN (1) | CN113557466B (ja) |
SG (1) | SG11202109890QA (ja) |
TW (1) | TWI829899B (ja) |
WO (1) | WO2020197950A1 (ja) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11256177B2 (en) | 2019-09-11 | 2022-02-22 | Kla Corporation | Imaging overlay targets using Moiré elements and rotational symmetry arrangements |
TWI786554B (zh) * | 2020-02-27 | 2022-12-11 | 台灣積體電路製造股份有限公司 | 疊對誤差量測方法及疊對誤差量測結構 |
CN112558215B (zh) * | 2020-12-07 | 2023-01-13 | 北京信息科技大学 | 一种基于飞秒激光技术的阶跃型等栅距光栅及其制备方法 |
US11720031B2 (en) * | 2021-06-28 | 2023-08-08 | Kla Corporation | Overlay design for electron beam and scatterometry overlay measurements |
KR20230069545A (ko) * | 2021-11-12 | 2023-05-19 | 삼성전자주식회사 | 무아레 패턴을 이용한 반도체 장치의 제조 방법 |
CN114670244B (zh) * | 2022-03-29 | 2023-10-20 | 中国铁建重工集团股份有限公司 | 一种结构制造方法及装置 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009510770A (ja) | 2005-09-30 | 2009-03-12 | アドバンスト・マイクロ・ディバイシズ・インコーポレイテッド | オーバーレイ精度とパターン配置誤差とを同時に測定する方法 |
JP2009147328A (ja) | 2007-12-13 | 2009-07-02 | Asml Netherlands Bv | 位置合わせ方法、アライメントシステムおよびアライメントマークを有する製品 |
US20160300767A1 (en) | 2015-04-10 | 2016-10-13 | Kang-woong KO | Method for detecting overlay error and method for manufacturing semiconductor device using the same |
US20170148643A1 (en) | 2015-11-19 | 2017-05-25 | Samsung Electronics Co., Ltd. | Method of forming pattern of semiconductor device |
US20170146810A1 (en) | 2015-05-19 | 2017-05-25 | Kla-Tencor Corporation | Self-Moire Target Design Principles for Measuring Unresolved Device-Like Pitches |
Family Cites Families (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH10270347A (ja) * | 1997-03-24 | 1998-10-09 | Nikon Corp | 位置ずれ検出方法及びその装置 |
US6351307B1 (en) | 1999-02-23 | 2002-02-26 | The Regents Of The University Of California | Combined dispersive/interference spectroscopy for producing a vector spectrum |
US20030160163A1 (en) | 2002-02-25 | 2003-08-28 | Alan Wong | Optical metrology target design for simultaneous measurement of multiple periodic structures |
US7440105B2 (en) | 2002-12-05 | 2008-10-21 | Kla-Tencor Technologies Corporation | Continuously varying offset mark and methods of determining overlay |
WO2004107415A1 (ja) | 2003-05-28 | 2004-12-09 | Nikon Corporation | 位置情報計測方法及び装置、並びに露光方法及び装置 |
SG118283A1 (en) * | 2003-06-20 | 2006-01-27 | Asml Netherlands Bv | Lithographic apparatus and device manufacturing method |
JP4074867B2 (ja) | 2003-11-04 | 2008-04-16 | エーエスエムエル ネザーランズ ビー.ブイ. | 第1及び第2位置合せマークの相対位置を計測する方法及び装置 |
TW200734702A (en) * | 2005-12-15 | 2007-09-16 | Nanoopto Corp | Optical retarders and methods of making the same |
EP2458441B1 (en) | 2010-11-30 | 2022-01-19 | ASML Netherlands BV | Measuring method, apparatus and substrate |
JP6312664B2 (ja) * | 2012-06-26 | 2018-04-18 | ケーエルエー−テンカー コーポレイション | 近接場計測 |
US8913237B2 (en) * | 2012-06-26 | 2014-12-16 | Kla-Tencor Corporation | Device-like scatterometry overlay targets |
WO2014062972A1 (en) * | 2012-10-18 | 2014-04-24 | Kla-Tencor Corporation | Symmetric target design in scatterometry overlay metrology |
WO2015120070A1 (en) * | 2014-02-05 | 2015-08-13 | Kla-Tencor Corporation | Grazing order metrology |
EP3123215B1 (en) * | 2014-07-31 | 2023-03-29 | ImagineOptix Corporation | Bragg liquid crystal polarization gratings |
JP6404070B2 (ja) | 2014-10-01 | 2018-10-10 | 国立研究開発法人産業技術総合研究所 | マルチスケール変形計測用格子パターンとその製作方法 |
US9562793B2 (en) * | 2014-11-17 | 2017-02-07 | Mitutoyo Corporation | Illumination portion for an optical encoder |
WO2017100033A1 (en) * | 2015-12-09 | 2017-06-15 | 3M Innovative Properties Company | Optical stack |
DE102016202198A1 (de) * | 2016-02-12 | 2017-08-17 | Carl Zeiss Smt Gmbh | Vorrichtung zur Moiré-Vermessung eines optischen Prüflings |
US10243668B2 (en) * | 2016-04-27 | 2019-03-26 | Industrial Technology Research Institute | Positioning measurement device and the method thereof |
CN106597675B (zh) * | 2016-12-21 | 2019-04-05 | 广东顺德中山大学卡内基梅隆大学国际联合研究院 | 一种裸眼3d摩尔条纹消除装置及其使用方法 |
US10551749B2 (en) * | 2017-01-04 | 2020-02-04 | Kla-Tencor Corporation | Metrology targets with supplementary structures in an intermediate layer |
-
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- 2020-03-20 EP EP20778397.8A patent/EP3938837A4/en active Pending
- 2020-03-20 CN CN202080020182.2A patent/CN113557466B/zh active Active
- 2020-03-20 US US16/758,908 patent/US11614692B2/en active Active
- 2020-03-20 KR KR1020217034399A patent/KR102637420B1/ko active IP Right Grant
- 2020-03-20 JP JP2021557316A patent/JP7308284B2/ja active Active
- 2020-03-20 WO PCT/US2020/023741 patent/WO2020197950A1/en unknown
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Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009510770A (ja) | 2005-09-30 | 2009-03-12 | アドバンスト・マイクロ・ディバイシズ・インコーポレイテッド | オーバーレイ精度とパターン配置誤差とを同時に測定する方法 |
JP2009147328A (ja) | 2007-12-13 | 2009-07-02 | Asml Netherlands Bv | 位置合わせ方法、アライメントシステムおよびアライメントマークを有する製品 |
US20160300767A1 (en) | 2015-04-10 | 2016-10-13 | Kang-woong KO | Method for detecting overlay error and method for manufacturing semiconductor device using the same |
US20170146810A1 (en) | 2015-05-19 | 2017-05-25 | Kla-Tencor Corporation | Self-Moire Target Design Principles for Measuring Unresolved Device-Like Pitches |
US20170148643A1 (en) | 2015-11-19 | 2017-05-25 | Samsung Electronics Co., Ltd. | Method of forming pattern of semiconductor device |
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Publication number | Publication date |
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TWI829899B (zh) | 2024-01-21 |
TW202104832A (zh) | 2021-02-01 |
KR20210132737A (ko) | 2021-11-04 |
WO2020197950A1 (en) | 2020-10-01 |
EP3938837A4 (en) | 2022-11-23 |
CN113557466B (zh) | 2024-08-30 |
KR102637420B1 (ko) | 2024-02-15 |
JP2022526933A (ja) | 2022-05-27 |
CN113557466A (zh) | 2021-10-26 |
SG11202109890QA (en) | 2021-10-28 |
US20210200106A1 (en) | 2021-07-01 |
US11614692B2 (en) | 2023-03-28 |
EP3938837A1 (en) | 2022-01-19 |
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