JP2005507353A - チタニアドープ溶融シリカ極紫外線リソグラフィー用ガラス基板 - Google Patents

チタニアドープ溶融シリカ極紫外線リソグラフィー用ガラス基板 Download PDF

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Publication number
JP2005507353A
JP2005507353A JP2002585343A JP2002585343A JP2005507353A JP 2005507353 A JP2005507353 A JP 2005507353A JP 2002585343 A JP2002585343 A JP 2002585343A JP 2002585343 A JP2002585343 A JP 2002585343A JP 2005507353 A JP2005507353 A JP 2005507353A
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Prior art keywords
porous preform
glass
titania
burner
dense
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Pending
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JP2002585343A
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English (en)
Japanese (ja)
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JP2005507353A5 (https=
Inventor
ジー アッカーマン,ブラッドフォード
イー アーディナ,ケネス
エイ ムーア,リサ
ジェイ ルッソ,ニッキ
シー ユー,チュンツェ
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Corning Inc
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Corning Inc
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Filing date
Publication date
Application filed by Corning Inc filed Critical Corning Inc
Publication of JP2005507353A publication Critical patent/JP2005507353A/ja
Publication of JP2005507353A5 publication Critical patent/JP2005507353A5/ja
Pending legal-status Critical Current

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    • CCHEMISTRY; METALLURGY
    • C03GLASS; MINERAL OR SLAG WOOL
    • C03CCHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C4/00Compositions for glass with special properties
    • C03C4/0085Compositions for glass with special properties for UV-transmitting glass
    • CCHEMISTRY; METALLURGY
    • C03GLASS; MINERAL OR SLAG WOOL
    • C03BMANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B19/00Other methods of shaping glass
    • C03B19/14Other methods of shaping glass by gas- or vapour- phase reaction processes
    • C03B19/1415Reactant delivery systems
    • CCHEMISTRY; METALLURGY
    • C03GLASS; MINERAL OR SLAG WOOL
    • C03BMANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B19/00Other methods of shaping glass
    • C03B19/14Other methods of shaping glass by gas- or vapour- phase reaction processes
    • C03B19/1453Thermal after-treatment of the shaped article, e.g. dehydrating, consolidating, sintering
    • CCHEMISTRY; METALLURGY
    • C03GLASS; MINERAL OR SLAG WOOL
    • C03BMANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B19/00Other methods of shaping glass
    • C03B19/14Other methods of shaping glass by gas- or vapour- phase reaction processes
    • C03B19/1484Means for supporting, rotating or translating the article being formed
    • CCHEMISTRY; METALLURGY
    • C03GLASS; MINERAL OR SLAG WOOL
    • C03CCHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C3/00Glass compositions
    • C03C3/04Glass compositions containing silica
    • C03C3/06Glass compositions containing silica with more than 90% silica by weight, e.g. quartz
    • CCHEMISTRY; METALLURGY
    • C03GLASS; MINERAL OR SLAG WOOL
    • C03CCHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C3/00Glass compositions
    • C03C3/04Glass compositions containing silica
    • C03C3/076Glass compositions containing silica with 40% to 90% silica, by weight
    • CCHEMISTRY; METALLURGY
    • C03GLASS; MINERAL OR SLAG WOOL
    • C03BMANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2201/00Type of glass produced
    • C03B2201/06Doped silica-based glasses
    • C03B2201/08Doped silica-based glasses doped with boron or fluorine or other refractive index decreasing dopant
    • C03B2201/12Doped silica-based glasses doped with boron or fluorine or other refractive index decreasing dopant doped with fluorine
    • CCHEMISTRY; METALLURGY
    • C03GLASS; MINERAL OR SLAG WOOL
    • C03BMANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2201/00Type of glass produced
    • C03B2201/06Doped silica-based glasses
    • C03B2201/30Doped silica-based glasses doped with metals, e.g. Ga, Sn, Sb, Pb or Bi
    • C03B2201/40Doped silica-based glasses doped with metals, e.g. Ga, Sn, Sb, Pb or Bi doped with transition metals other than rare earth metals, e.g. Zr, Nb, Ta or Zn
    • C03B2201/42Doped silica-based glasses doped with metals, e.g. Ga, Sn, Sb, Pb or Bi doped with transition metals other than rare earth metals, e.g. Zr, Nb, Ta or Zn doped with titanium
    • CCHEMISTRY; METALLURGY
    • C03GLASS; MINERAL OR SLAG WOOL
    • C03BMANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2207/00Glass deposition burners
    • C03B2207/30For glass precursor of non-standard type, e.g. solid SiH3F
    • C03B2207/32Non-halide
    • CCHEMISTRY; METALLURGY
    • C03GLASS; MINERAL OR SLAG WOOL
    • C03BMANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2207/00Glass deposition burners
    • C03B2207/60Relationship between burner and deposit, e.g. position
    • C03B2207/62Distance
    • CCHEMISTRY; METALLURGY
    • C03GLASS; MINERAL OR SLAG WOOL
    • C03BMANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2207/00Glass deposition burners
    • C03B2207/70Control measures
    • CCHEMISTRY; METALLURGY
    • C03GLASS; MINERAL OR SLAG WOOL
    • C03CCHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C2201/00Glass compositions
    • C03C2201/06Doped silica-based glasses
    • C03C2201/08Doped silica-based glasses containing boron or halide
    • C03C2201/12Doped silica-based glasses containing boron or halide containing fluorine
    • CCHEMISTRY; METALLURGY
    • C03GLASS; MINERAL OR SLAG WOOL
    • C03CCHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C2201/00Glass compositions
    • C03C2201/06Doped silica-based glasses
    • C03C2201/30Doped silica-based glasses containing metals
    • C03C2201/40Doped silica-based glasses containing metals containing transition metals other than rare earth metals, e.g. Zr, Nb, Ta or Zn
    • C03C2201/42Doped silica-based glasses containing metals containing transition metals other than rare earth metals, e.g. Zr, Nb, Ta or Zn containing titanium
    • CCHEMISTRY; METALLURGY
    • C03GLASS; MINERAL OR SLAG WOOL
    • C03CCHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C2203/00Production processes
    • C03C2203/40Gas-phase processes
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P40/00Technologies relating to the processing of minerals
    • Y02P40/50Glass production, e.g. reusing waste heat during processing or shaping
    • Y02P40/57Improving the yield, e-g- reduction of reject rates

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Glass Compositions (AREA)
  • Glass Melting And Manufacturing (AREA)
  • Preparing Plates And Mask In Photomechanical Process (AREA)
JP2002585343A 2001-04-27 2002-03-25 チタニアドープ溶融シリカ極紫外線リソグラフィー用ガラス基板 Pending JP2005507353A (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/844,947 US8047023B2 (en) 2001-04-27 2001-04-27 Method for producing titania-doped fused silica glass
PCT/US2002/009461 WO2002088036A1 (en) 2001-04-27 2002-03-25 Method for producing titania-doped fused silica extreme ultraviolet lithography substrates glass

Publications (2)

Publication Number Publication Date
JP2005507353A true JP2005507353A (ja) 2005-03-17
JP2005507353A5 JP2005507353A5 (https=) 2005-12-22

Family

ID=25294029

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2002585343A Pending JP2005507353A (ja) 2001-04-27 2002-03-25 チタニアドープ溶融シリカ極紫外線リソグラフィー用ガラス基板

Country Status (5)

Country Link
US (1) US8047023B2 (https=)
EP (1) EP1390309B1 (https=)
JP (1) JP2005507353A (https=)
TW (1) TW568889B (https=)
WO (1) WO2002088036A1 (https=)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005194118A (ja) * 2004-01-05 2005-07-21 Asahi Glass Co Ltd シリカガラス
JP2008505827A (ja) * 2004-05-17 2008-02-28 ヘレウス クワルツグラス ゲーエムベーハー ウント コンパニー カーゲー 石英ガラスブランクおよびその製造方法
WO2011021609A1 (ja) * 2009-08-19 2011-02-24 旭硝子株式会社 TiO2を含有するシリカガラスおよびEUVリソグラフィ用光学部材
JP2013530517A (ja) * 2010-05-03 2013-07-25 カール・ツァイス・エスエムティー・ゲーエムベーハー Euvリソグラフィ用ミラーの基板およびその製造方法
JP2013224261A (ja) * 2003-04-03 2013-10-31 Asahi Glass Co Ltd TiO2を含有するシリカガラスおよびその製造法

Families Citing this family (38)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030226377A1 (en) * 2002-03-05 2003-12-11 Barrett W. Tim Method of making silica-titania extreme ultraviolet elements
DE102004014954A1 (de) * 2003-03-27 2005-03-10 Hoya Corp Verfahren zur Herstellung eines Glassubstrats für einen Maskenrohling und Verfahren zur Herstellung eines Maskenrohlings
JP4219718B2 (ja) * 2003-03-28 2009-02-04 Hoya株式会社 Euvマスクブランクス用ガラス基板の製造方法及びeuvマスクブランクスの製造方法
JP2010275189A (ja) * 2003-04-03 2010-12-09 Asahi Glass Co Ltd TiO2を含有するシリカガラスおよびEUVリソグラフィ用光学部材
JP4792705B2 (ja) * 2003-04-03 2011-10-12 旭硝子株式会社 TiO2を含有するシリカガラスおよびその製造法
JP5402975B2 (ja) * 2003-04-03 2014-01-29 旭硝子株式会社 TiO2を含有するシリカガラスおよびその製造法
JP4792706B2 (ja) * 2003-04-03 2011-10-12 旭硝子株式会社 TiO2を含有するシリカガラスおよびその製造方法
JP5367204B2 (ja) 2003-04-03 2013-12-11 旭硝子株式会社 TiO2を含有するシリカガラスおよびEUVリソグラフィ用光学部材
EP1471038A3 (de) * 2003-04-26 2005-11-23 Schott Ag Verfahren zur Herstellung von Glaskörpern aus dotiertem Quarzglas
DE10359102A1 (de) * 2003-12-17 2005-07-21 Carl Zeiss Smt Ag Optische Komponente umfassend ein Material mit einer vorbestimmten Homogenität der thermischen Längsausdehnung
DE102004015766B4 (de) * 2004-03-23 2016-05-12 Asahi Glass Co., Ltd. Verwendung eines SiO2-TiO2-Glases als strahlungsresistentes Substrat
JP4957249B2 (ja) 2004-07-01 2012-06-20 旭硝子株式会社 TiO2を含有するシリカガラスおよびその製造方法
JP4487783B2 (ja) * 2005-01-25 2010-06-23 旭硝子株式会社 TiO2を含有するシリカガラスの製造方法およびTiO2を含有するシリカガラスを用いたEUVリソグラフィ用光学部材
KR100651453B1 (ko) * 2005-10-21 2006-11-29 삼성전자주식회사 수트 모재의 제조 장치
TW200940472A (en) 2007-12-27 2009-10-01 Asahi Glass Co Ltd TiO2-containing silica glass
JP5365247B2 (ja) 2008-02-25 2013-12-11 旭硝子株式会社 TiO2を含有するシリカガラスおよびそれを用いたリソグラフィ用光学部材
WO2009107858A1 (en) * 2008-02-26 2009-09-03 Asahi Glass Co., Ltd. Tio2-containing silica glass and optical member for euv lithography using high energy densities as well as special temperature controlled process for its manufacture
JP5417884B2 (ja) * 2008-02-27 2014-02-19 旭硝子株式会社 TiO2を含有するシリカガラスおよびそれを用いたリソグラフィ用光学部材
EP2250133A1 (en) * 2008-02-29 2010-11-17 Asahi Glass Company, Limited Tio2-containing silica glass and optical member for lithography using the same
JP5644058B2 (ja) * 2008-03-21 2014-12-24 旭硝子株式会社 TiO2を含有するシリカガラス
JP2009274947A (ja) 2008-04-16 2009-11-26 Asahi Glass Co Ltd TiO2を含有するEUVリソグラフィ光学部材用シリカガラス
JP2010135732A (ja) 2008-08-01 2010-06-17 Asahi Glass Co Ltd Euvマスクブランクス用基板
US20100124709A1 (en) * 2008-11-20 2010-05-20 Daniel Warren Hawtof Image mask assembly for photolithography
EP2377826B2 (en) 2009-01-13 2020-05-27 AGC Inc. OPTICAL MEMBER COMPRISING SILICA GLASS CONTAINING TiO2
US8735308B2 (en) * 2009-01-13 2014-05-27 Asahi Glass Company, Limited Optical member comprising TiO2-containing silica glass
WO2010098352A1 (ja) * 2009-02-24 2010-09-02 旭硝子株式会社 多孔質石英ガラス体の製造方法およびeuvリソグラフィ用光学部材
DE102010039779A1 (de) * 2009-08-28 2011-03-24 Corning Inc. Glas mit geringer wärmeausdehnung für euvl-anwendungen
US8567214B2 (en) * 2010-06-28 2013-10-29 Asahi Glass Company, Limited Method for producing glass body and method for producing optical member for EUV lithography
KR20140012053A (ko) 2011-01-31 2014-01-29 아사히 가라스 가부시키가이샤 티타니아를 함유하는 실리카 유리체의 제조 방법 및 티타니아를 함유하는 실리카 유리체
JP5640920B2 (ja) 2011-08-18 2014-12-17 信越化学工業株式会社 チタニアドープ石英ガラス及びその製造方法
DE102012013134B4 (de) * 2012-07-03 2014-04-03 Heraeus Quarzglas Gmbh & Co. Kg Verfahren zur Herstellung von Zylindern aus Quarzglas
US8987155B2 (en) 2012-08-30 2015-03-24 Corning Incorporated Niobium doped silica titania glass and method of preparation
US9382151B2 (en) 2014-01-31 2016-07-05 Corning Incorporated Low expansion silica-titania articles with a Tzc gradient by compositional variation
US9382150B2 (en) * 2014-03-14 2016-07-05 Corning Incorporated Boron-doped titania-silica glass having very low CTE slope
WO2016064806A1 (en) 2014-10-20 2016-04-28 Navus Automation, Inc. Fused silica furnace system & method for continuous production of fused silica
ES2706877T3 (es) 2014-11-13 2019-04-01 Gerresheimer Glas Gmbh Filtro de partículas de máquina para conformar vidrio, unidad de émbolo, cabeza de soplado, soporte de cabeza de soplado y máquina para conformar vidrio adaptada a dicho filtro o que lo comprende
US9580350B2 (en) 2014-11-19 2017-02-28 Corning Incorporated High hydroxyl TiO2-SiO2 glass
JP2017536323A (ja) 2014-11-26 2017-12-07 コーニング インコーポレイテッド 低膨張率を有するドープされたシリカ−チタニアガラスおよびその製造方法

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE438752A (https=) * 1939-04-22
US3806570A (en) * 1972-03-30 1974-04-23 Corning Glass Works Method for producing high quality fused silica
JPS57100930A (en) * 1980-12-12 1982-06-23 Nippon Telegr & Teleph Corp <Ntt> Preparation of base material for optical fiber
US4440558A (en) * 1982-06-14 1984-04-03 International Telephone And Telegraph Corporation Fabrication of optical preforms by axial chemical vapor deposition
US5067975A (en) * 1989-12-22 1991-11-26 Corning Incorporated Method of manufacturing optical waveguide fiber with titania-silica outer cladding
US5152819A (en) * 1990-08-16 1992-10-06 Corning Incorporated Method of making fused silica
US5043002A (en) * 1990-08-16 1991-08-27 Corning Incorporated Method of making fused silica by decomposing siloxanes
JP2818350B2 (ja) * 1993-03-18 1998-10-30 信越化学工業株式会社 石英ガラス母材の製造方法
JP2818349B2 (ja) * 1993-03-18 1998-10-30 信越化学工業株式会社 石英ガラス母材の製造方法
KR20000076000A (ko) 1997-03-07 2000-12-26 알프레드 엘. 미첼슨 티타니아-도핑 용융 실리카의 제조 방법
KR100574123B1 (ko) 1997-09-24 2006-04-25 코닝 인코포레이티드 용융 실리카-티타니아 유리의 제조방법
JP2002512169A (ja) 1998-04-22 2002-04-23 コーニング・インコーポレーテッド 超低膨張シリカチタニアガラスの製造方法
EP1010672A1 (en) * 1998-12-17 2000-06-21 PIRELLI CAVI E SISTEMI S.p.A. Method and apparatus for forming an optical fiber preform by combustionless hydrolysis
US6242136B1 (en) * 1999-02-12 2001-06-05 Corning Incorporated Vacuum ultraviolet transmitting silicon oxyfluoride lithography glass
US6265115B1 (en) * 1999-03-15 2001-07-24 Corning Incorporated Projection lithography photomask blanks, preforms and methods of making
US6931097B1 (en) 1999-07-22 2005-08-16 Corning Incorporated Extreme ultraviolet soft x-ray projection lithographic method system and lithographic elements
AU5932500A (en) 1999-07-22 2001-02-13 Corning Incorporated Extreme ultraviolet soft x-ray projection lithographic method and mask devices
US6606883B2 (en) * 2001-04-27 2003-08-19 Corning Incorporated Method for producing fused silica and doped fused silica glass

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013224261A (ja) * 2003-04-03 2013-10-31 Asahi Glass Co Ltd TiO2を含有するシリカガラスおよびその製造法
JP2005194118A (ja) * 2004-01-05 2005-07-21 Asahi Glass Co Ltd シリカガラス
JP2008505827A (ja) * 2004-05-17 2008-02-28 ヘレウス クワルツグラス ゲーエムベーハー ウント コンパニー カーゲー 石英ガラスブランクおよびその製造方法
WO2011021609A1 (ja) * 2009-08-19 2011-02-24 旭硝子株式会社 TiO2を含有するシリカガラスおよびEUVリソグラフィ用光学部材
JP2013530517A (ja) * 2010-05-03 2013-07-25 カール・ツァイス・エスエムティー・ゲーエムベーハー Euvリソグラフィ用ミラーの基板およびその製造方法

Also Published As

Publication number Publication date
TW568889B (en) 2004-01-01
US8047023B2 (en) 2011-11-01
US20020157421A1 (en) 2002-10-31
EP1390309A4 (en) 2004-12-08
EP1390309B1 (en) 2016-12-21
EP1390309A1 (en) 2004-02-25
WO2002088036A1 (en) 2002-11-07

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