JP4356696B2 - 多層膜反射鏡及びx線露光装置 - Google Patents
多層膜反射鏡及びx線露光装置 Download PDFInfo
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- 239000000463 material Substances 0.000 claims description 56
- 230000003287 optical effect Effects 0.000 claims description 37
- 230000000737 periodic effect Effects 0.000 claims description 32
- 239000000758 substrate Substances 0.000 claims description 22
- 238000005286 illumination Methods 0.000 claims description 10
- 229910052750 molybdenum Inorganic materials 0.000 claims description 7
- 229910052710 silicon Inorganic materials 0.000 claims description 7
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 6
- 238000010030 laminating Methods 0.000 claims description 6
- 239000011733 molybdenum Substances 0.000 claims description 6
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 5
- 239000010703 silicon Substances 0.000 claims description 5
- 239000010408 film Substances 0.000 description 319
- 239000010410 layer Substances 0.000 description 150
- 230000003746 surface roughness Effects 0.000 description 21
- 238000000034 method Methods 0.000 description 13
- 238000000560 X-ray reflectometry Methods 0.000 description 12
- 238000004544 sputter deposition Methods 0.000 description 12
- 230000007423 decrease Effects 0.000 description 8
- 239000000126 substance Substances 0.000 description 8
- 229910052724 xenon Inorganic materials 0.000 description 8
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 8
- 238000002310 reflectometry Methods 0.000 description 7
- 230000005540 biological transmission Effects 0.000 description 6
- 238000001755 magnetron sputter deposition Methods 0.000 description 5
- 238000005452 bending Methods 0.000 description 4
- 238000001900 extreme ultraviolet lithography Methods 0.000 description 4
- 229910052790 beryllium Inorganic materials 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000001459 lithography Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 230000004075 alteration Effects 0.000 description 2
- ATBAMAFKBVZNFJ-UHFFFAOYSA-N beryllium atom Chemical compound [Be] ATBAMAFKBVZNFJ-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000005229 chemical vapour deposition Methods 0.000 description 2
- 239000010948 rhodium Substances 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- INAHAJYZKVIDIZ-UHFFFAOYSA-N boron carbide Chemical compound B12B3B4C32B41 INAHAJYZKVIDIZ-UHFFFAOYSA-N 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000313 electron-beam-induced deposition Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000001659 ion-beam spectroscopy Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000000206 photolithography Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 229910052703 rhodium Inorganic materials 0.000 description 1
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 description 1
- 229910052707 ruthenium Inorganic materials 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 238000001771 vacuum deposition Methods 0.000 description 1
- 230000004304 visual acuity Effects 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y10/00—Nanotechnology for information processing, storage or transmission, e.g. quantum computing or single electron logic
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y40/00—Manufacture or treatment of nanostructures
-
- 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
- G03F1/00—Originals for photomechanical production of textured or patterned surfaces, e.g., masks, photo-masks, reticles; Mask blanks or pellicles therefor; Containers specially adapted therefor; Preparation thereof
- G03F1/22—Masks or mask blanks for imaging by radiation of 100nm or shorter wavelength, e.g. X-ray masks, extreme ultraviolet [EUV] masks; Preparation thereof
- G03F1/24—Reflection masks; Preparation thereof
-
- 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
- G03F7/70216—Mask projection systems
- G03F7/70233—Optical aspects of catoptric systems, i.e. comprising only reflective elements, e.g. extreme ultraviolet [EUV] projection systems
-
- 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
- G03F7/7095—Materials, e.g. materials for housing, stage or other support having particular properties, e.g. weight, strength, conductivity, thermal expansion coefficient
- G03F7/70958—Optical materials or coatings, e.g. with particular transmittance, reflectance or anti-reflection properties
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21K—TECHNIQUES FOR HANDLING PARTICLES OR IONISING RADIATION NOT OTHERWISE PROVIDED FOR; IRRADIATION DEVICES; GAMMA RAY OR X-RAY MICROSCOPES
- G21K1/00—Arrangements for handling particles or ionising radiation, e.g. focusing or moderating
- G21K1/06—Arrangements for handling particles or ionising radiation, e.g. focusing or moderating using diffraction, refraction or reflection, e.g. monochromators
- G21K1/062—Devices having a multilayer structure
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21K—TECHNIQUES FOR HANDLING PARTICLES OR IONISING RADIATION NOT OTHERWISE PROVIDED FOR; IRRADIATION DEVICES; GAMMA RAY OR X-RAY MICROSCOPES
- G21K2201/00—Arrangements for handling radiation or particles
- G21K2201/06—Arrangements for handling radiation or particles using diffractive, refractive or reflecting elements
- G21K2201/067—Construction details
-
- 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
- H01L21/0332—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 composition, e.g. multilayer masks, materials
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- Condensed Matter Physics & Semiconductors (AREA)
- Spectroscopy & Molecular Physics (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Exposure Of Semiconductors, Excluding Electron Or Ion Beam Exposure (AREA)
- Exposure And Positioning Against Photoresist Photosensitive Materials (AREA)
- Optical Elements Other Than Lenses (AREA)
Description
2dsinθ=nλ
(d:多層膜の周期長、θ:入射角度、λ:X線の波長)
を満たす場合にX線を強く反射する波長依存性を有するため、この式を満たすように各因子を選択する必要がある。
T2=d2×N2×S2
で表される。同様に、第1多層膜67の周期長をd1、積層数をN1、応力をS1とした場合、第1多層膜67の全応力T1は、
T1=d1×N1×S1
で表される。そこで、T1+T2=0となるように第1多層膜67の積層数N1を選択することにより、多層膜反射鏡61の内部応力を相殺することができる。ただし、応力は積層数によっても変化する場合があり、上記のように選択した積層数で完全に応力が相殺されない場合もある。この場合は、その残渣応力に応じて、第1多層膜67の積層数を調整する必要がある。なお、上述したように、第1多層膜67のMo層671の厚さを変えていないので、Mo層の厚さが厚くなることに起因する反射率の低下は生じない。
T2=d2×N2×S2
=(7.2nm)×(50)×(−350MPa)
=−126N/m
である。多層膜反射鏡61の内部応力を低減するための条件式T1+T2=0と、第1多層膜67の全応力T1を求める式T1=d1×N1×S1から、第1多層膜67の積層数N1は、
N1=(+126N/m)/{(3.6nm)×(+400MPa)}
=87.5≒88
となる。なお、積層数N1は整数とする必要があるので、小数点以下を切り上げてN1=88層対となる。
比較のために、従来の応力低減技術を用いて多層膜反射鏡を製造した場合の内部応力及び反射率を求めた。この従来の多層膜反射鏡は、例えば図5に示す多層膜反射鏡51である。
T4=(7.2nm)×(50)×(−350MPa)
=−126N/m
である。多層膜反射鏡51の内部応力を低減するために必要な第1多層膜57の積層数N3は、第1多層膜57の周期長d3を7.2nm、応力S3を+600MPaの引っ張り応力として、
N3=(+126N/m)/{(7.2nm)×(+600MPa)}
≒30
となる。
T2=d2×N2×S2
=(7.2nm)×(50)×(−350MPa)
=−126N/m
である。多層膜反射鏡61の内部応力を低減するための条件式T1+T2=0と、第1多層膜67の全応力T1を求める式T1=d1×N1×S1から、第1多層膜67の積層数N1は、
N1=(+126N/m)/{(2.9nm)×(+300MPa)}
≒145
となる。
T2=d2×N2×S2
=(7.2nm)×(50)×(−350MPa)
=−126N/m
である。多層膜反射鏡61の内部応力を低減するための条件式T1+T2=0と、第1多層膜67の全応力T1を求める式T1=d1×N1×S1から、第1多層膜67の積層数N1は、
N1=(+126N/m)/{(4.6nm)×(+300MPa)}
≒92
となる。
T2=d2×N2×S2
=(7.2nm)×(45)×(−350MPa)
≒−113N/m
である。多層膜反射鏡61の内部応力を低減するための条件式T1+T2=0と、第1多層膜67の全応力T1を求める式T1=d1×N1×S1から、第1多層膜67の積層数N1は、
N1=(+113N/m)/{(3.3nm)×(+408MPa)}
≒84
となる。
Claims (8)
- 軟X線領域での屈折率と真空の屈折率との差が大きい物質(以下、「第1物質」と呼称する)からなる層と小さい物質(以下、「第2物質」と呼称する)からなる層とを基板上に交互に積層してなる第1多層膜と、前記第1多層膜上に形成された、第1物質からなる層と第2物質からなる層とを交互に積層してなる第2多層膜とを有する多層膜反射鏡であって、前記第1多層膜の第1物質からなる層の厚さは、前記第2多層膜の第1物質からなる層の厚さとほぼ等しいか、それより薄く、前記第1多層膜及び前記第2多層膜において、第1物質層の厚さと第2物質層の厚さとの合計を周期長とし、周期長に対する第1物質層の厚さの比をΓとして、前記第1多層膜のΓと前記第2多層膜のΓとは異なる、ことを特徴とする多層膜反射鏡。
- 請求の範囲第1項に記載の多層膜反射鏡であって、前記第1多層膜の第1物質からなる層の厚さは、前記第2多層膜の第1物質からなる層の厚さの50%〜120%であることを特徴とする多層膜反射鏡。
- 請求の範囲第1項に記載の多層膜反射鏡であって、前記第1多層膜は、前記第2多層膜が有する内部応力と相反する内部応力を有することを特徴とする多層膜反射鏡。
- 請求の範囲第1項に記載の多層膜反射鏡であって、前記第1物質層の厚さと前記第2物質層の厚さとの合計を周期長とし、周期長に対する前記第1物質層の厚さの比をΓとするとき、第1多層膜のΓが第2多層膜のΓより大きいことを特徴とする多層膜反射鏡。
- 請求の範囲第1項に記載の多層膜反射鏡であって、前記第1物質がモリブデンであることを特徴とする多層膜反射鏡。
- 請求の範囲第1項に記載の多層膜反射鏡であって、前記第2物質がシリコンであることを特徴とする多層膜反射鏡。
- モリブデン層(以下、Mo層と呼称する)とシリコン層(以下、Si層と呼称する)とを基板上に交互に積層してなる第1多層膜と、前記第1多層膜上に形成された、Mo層とSi層とを交互に積層してなる第2多層膜と、を有する多層膜反射鏡であって、前記第1多層膜のMo層の厚さは、前記第2多層膜のMo層の厚さとほぼ等しいか、それより薄く、前記第1多層膜及び前記第2多層膜において、Mo層の厚さとSi層の厚さとの合計を周期長として、前記第1多層膜の周期長と前記第2多層膜の周期長とは異なることを特徴とする多層膜反射鏡。
- X線を発生させるX線光源と、このX線光源からのX線をマスクに導く照明光学系と、前記マスクからのX線を感光性基板に導く投影光学系とを有し、前記マスクのパターンを感光性基板へ転写するX線露光装置であって、前記照明光学系、前記マスク及び前記投影光学系のうちの少なくとも一つに、請求の範囲第1項から第7項のうちいずれかに記載の多層膜反射鏡を有することを特徴とするX線露光装置。
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JP2003156212 | 2003-06-02 | ||
JP2003156212 | 2003-06-02 | ||
JP2004045771 | 2004-02-23 | ||
JP2004045771 | 2004-02-23 | ||
PCT/JP2004/007410 WO2004109778A1 (ja) | 2003-06-02 | 2004-05-24 | 多層膜反射鏡及びx線露光装置 |
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JPWO2004109778A1 JPWO2004109778A1 (ja) | 2006-07-20 |
JP4356696B2 true JP4356696B2 (ja) | 2009-11-04 |
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US (1) | US7203275B2 (ja) |
EP (4) | EP2490227B1 (ja) |
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Cited By (2)
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US9261773B2 (en) | 2013-02-20 | 2016-02-16 | Asahi Glass Company, Limited | Reflective mask blank for EUV lithography, and reflective layer-coated substrate for EUV lithography |
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JP2007108194A (ja) * | 2005-10-11 | 2007-04-26 | Canon Inc | 多層膜ミラーの製造方法、光学系の製造方法、露光装置、及びデバイス製造方法 |
JP4703353B2 (ja) * | 2005-10-14 | 2011-06-15 | Hoya株式会社 | 多層反射膜付き基板、その製造方法、反射型マスクブランクおよび反射型マスク |
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JP2010506224A (ja) * | 2006-10-13 | 2010-02-25 | メディア ラリオ ソシエタ ア レスポンサビリタ リミタータ | コーティングされたミラー及びその製造 |
EP2087510A4 (en) * | 2006-11-27 | 2010-05-05 | Nikon Corp | OPTICAL ELEMENT, ASSOCIATED EXPOSURE UNIT AND METHOD FOR PRODUCING THE DEVICE |
US8213084B2 (en) * | 2007-04-06 | 2012-07-03 | California Institute Of Technology | Method and apparatus for compensation of mechanical disturbances in optical interferometers |
JP2009141177A (ja) * | 2007-12-07 | 2009-06-25 | Canon Inc | Euv用ミラー及びそれを有するeuv露光装置 |
US8182870B1 (en) * | 2008-05-29 | 2012-05-22 | The United States Of America As Represented By The United States Department Of Energy | Method for generating small and ultra small apertures, slits, nozzles and orifices |
DE102008042212A1 (de) * | 2008-09-19 | 2010-04-01 | Carl Zeiss Smt Ag | Reflektives optisches Element und Verfahren zu seiner Herstellung |
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CA2793855A1 (en) * | 2010-03-22 | 2011-09-29 | Luxottica Us Holdings Corporation | Ion beam assisted deposition of ophthalmic lens coatings |
DE102011003357A1 (de) | 2011-01-31 | 2012-08-02 | Carl Zeiss Smt Gmbh | Spiegel für den EUV-Wellenlängenbereich, Herstellungsverfahren für einen solchen Spiegel, Projektionsobjektiv für die Mikrolithographie mit einem solchen Spiegel und Projektionsbelichtungsanlage für die Mikrolithographie mit einem solchen Projektionsobjektiv |
DE102011077983A1 (de) * | 2011-06-22 | 2012-12-27 | Carl Zeiss Smt Gmbh | Verfahren zur Herstellung eines reflektiven optischen Elements für die EUV-Lithographie |
FR2984584A1 (fr) * | 2011-12-20 | 2013-06-21 | Commissariat Energie Atomique | Dispositif de filtrage des rayons x |
DE102013200294A1 (de) * | 2013-01-11 | 2014-07-17 | Carl Zeiss Smt Gmbh | EUV-Spiegel und optisches System mit EUV-Spiegel |
NL2015521A (en) * | 2014-10-17 | 2016-08-30 | Asml Netherlands Bv | Radiation source-collector and method for manufacture. |
DE102016207307A1 (de) * | 2016-04-28 | 2017-11-02 | Carl Zeiss Smt Gmbh | Optisches Element und optische Anordnung damit |
DE102016107969A1 (de) * | 2016-04-29 | 2017-11-02 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Spiegel zur Reflexion von EUV-Strahlung mit Spannungskompensation und Verfahren zu dessen Herstellung |
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JP2002329649A (ja) * | 2001-04-27 | 2002-11-15 | Nikon Corp | レチクル、レチクルの製造方法、露光装置及び露光方法 |
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2004
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- 2004-05-24 EP EP18168175.0A patent/EP3389056A1/en not_active Withdrawn
- 2004-05-24 JP JP2005506748A patent/JP4356696B2/ja not_active Expired - Lifetime
- 2004-05-24 EP EP04734613A patent/EP1630856B1/en not_active Expired - Lifetime
- 2004-05-24 EP EP14186179.9A patent/EP2854159B1/en not_active Expired - Lifetime
- 2004-05-24 WO PCT/JP2004/007410 patent/WO2004109778A1/ja active Application Filing
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JP2013513961A (ja) * | 2009-12-15 | 2013-04-22 | カール・ツァイス・エスエムティー・ゲーエムベーハー | Euvリソグラフィ用反射光学素子 |
US8928972B2 (en) | 2009-12-15 | 2015-01-06 | Carl Zeiss Smt Gmbh | Reflective optical element for EUV lithography |
US8937709B2 (en) | 2009-12-15 | 2015-01-20 | Carl Zeiss Smt Gmbh | Reflective optical element for EUV lithography |
US9261773B2 (en) | 2013-02-20 | 2016-02-16 | Asahi Glass Company, Limited | Reflective mask blank for EUV lithography, and reflective layer-coated substrate for EUV lithography |
Also Published As
Publication number | Publication date |
---|---|
EP1630856A1 (en) | 2006-03-01 |
EP2490227A1 (en) | 2012-08-22 |
WO2004109778A1 (ja) | 2004-12-16 |
EP3389056A1 (en) | 2018-10-17 |
EP2854159A1 (en) | 2015-04-01 |
EP1630856B1 (en) | 2012-06-13 |
EP1630856A4 (en) | 2010-06-16 |
EP2854159B1 (en) | 2018-06-20 |
EP2490227B1 (en) | 2014-11-19 |
US7203275B2 (en) | 2007-04-10 |
US20060062348A1 (en) | 2006-03-23 |
JPWO2004109778A1 (ja) | 2006-07-20 |
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