DE102009053586A1 - Photomaskenrohling, Herstellungsverfahren für Photomaskenrohling und Herstellungsverfahren für Photomaske - Google Patents
Photomaskenrohling, Herstellungsverfahren für Photomaskenrohling und Herstellungsverfahren für Photomaske Download PDFInfo
- Publication number
- DE102009053586A1 DE102009053586A1 DE102009053586A DE102009053586A DE102009053586A1 DE 102009053586 A1 DE102009053586 A1 DE 102009053586A1 DE 102009053586 A DE102009053586 A DE 102009053586A DE 102009053586 A DE102009053586 A DE 102009053586A DE 102009053586 A1 DE102009053586 A1 DE 102009053586A1
- Authority
- DE
- Germany
- Prior art keywords
- light
- layer
- thin film
- photomask
- pressing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 38
- 239000010409 thin film Substances 0.000 claims abstract description 111
- 238000003825 pressing Methods 0.000 claims abstract description 102
- 239000000758 substrate Substances 0.000 claims abstract description 79
- 238000000034 method Methods 0.000 claims abstract description 39
- 238000012546 transfer Methods 0.000 claims abstract description 16
- 238000009694 cold isostatic pressing Methods 0.000 claims abstract description 12
- 230000010363 phase shift Effects 0.000 claims description 120
- 239000000463 material Substances 0.000 claims description 27
- 230000009467 reduction Effects 0.000 claims description 27
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 20
- 230000005540 biological transmission Effects 0.000 claims description 17
- 229910021350 transition metal silicide Inorganic materials 0.000 claims description 17
- 229910052804 chromium Inorganic materials 0.000 claims description 16
- 239000011651 chromium Substances 0.000 claims description 16
- 230000008569 process Effects 0.000 claims description 16
- 238000005530 etching Methods 0.000 claims description 14
- 150000001875 compounds Chemical class 0.000 claims description 11
- 229910021344 molybdenum silicide Inorganic materials 0.000 claims description 8
- 238000000059 patterning Methods 0.000 claims description 7
- YXTPWUNVHCYOSP-UHFFFAOYSA-N bis($l^{2}-silanylidene)molybdenum Chemical group [Si]=[Mo]=[Si] YXTPWUNVHCYOSP-UHFFFAOYSA-N 0.000 claims description 5
- 239000010410 layer Substances 0.000 description 282
- 230000008859 change Effects 0.000 description 46
- 239000007789 gas Substances 0.000 description 42
- 238000002834 transmittance Methods 0.000 description 26
- 239000010408 film Substances 0.000 description 23
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 19
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 17
- 230000015572 biosynthetic process Effects 0.000 description 17
- 238000001312 dry etching Methods 0.000 description 13
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 11
- 239000001301 oxygen Substances 0.000 description 11
- 229910052760 oxygen Inorganic materials 0.000 description 11
- 239000000126 substance Substances 0.000 description 11
- 229910052786 argon Inorganic materials 0.000 description 10
- 230000003287 optical effect Effects 0.000 description 10
- 238000005546 reactive sputtering Methods 0.000 description 10
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 9
- 229910016006 MoSi Inorganic materials 0.000 description 9
- 229910052757 nitrogen Inorganic materials 0.000 description 8
- 229910052750 molybdenum Inorganic materials 0.000 description 7
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 6
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 6
- 239000001307 helium Substances 0.000 description 6
- 229910052734 helium Inorganic materials 0.000 description 6
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 6
- 238000007654 immersion Methods 0.000 description 6
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 6
- 239000011733 molybdenum Substances 0.000 description 6
- 238000004544 sputter deposition Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 239000004065 semiconductor Substances 0.000 description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 239000000460 chlorine Substances 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 239000012528 membrane Substances 0.000 description 4
- -1 molybdenum silicide compound Chemical class 0.000 description 4
- 238000000206 photolithography Methods 0.000 description 4
- 229910052710 silicon Inorganic materials 0.000 description 4
- 238000005477 sputtering target Methods 0.000 description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 238000010894 electron beam technology Methods 0.000 description 3
- 238000000609 electron-beam lithography Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 3
- 238000004904 shortening Methods 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- 239000002356 single layer Substances 0.000 description 3
- 238000001228 spectrum Methods 0.000 description 3
- 229910052723 transition metal Inorganic materials 0.000 description 3
- 150000003624 transition metals Chemical class 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 description 2
- 229910004298 SiO 2 Inorganic materials 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004090 dissolution Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 229910052735 hafnium Inorganic materials 0.000 description 2
- VBJZVLUMGGDVMO-UHFFFAOYSA-N hafnium atom Chemical compound [Hf] VBJZVLUMGGDVMO-UHFFFAOYSA-N 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000003112 inhibitor Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 229910052703 rhodium Inorganic materials 0.000 description 2
- 239000010948 rhodium Substances 0.000 description 2
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 description 2
- 229910052707 ruthenium Inorganic materials 0.000 description 2
- 239000002344 surface layer Substances 0.000 description 2
- 229910052715 tantalum Inorganic materials 0.000 description 2
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 238000012549 training Methods 0.000 description 2
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 2
- 229910052721 tungsten Inorganic materials 0.000 description 2
- 239000010937 tungsten Substances 0.000 description 2
- 229910052720 vanadium Inorganic materials 0.000 description 2
- GPPXJZIENCGNKB-UHFFFAOYSA-N vanadium Chemical compound [V]#[V] GPPXJZIENCGNKB-UHFFFAOYSA-N 0.000 description 2
- 229910052726 zirconium Inorganic materials 0.000 description 2
- BUHVIAUBTBOHAG-FOYDDCNASA-N (2r,3r,4s,5r)-2-[6-[[2-(3,5-dimethoxyphenyl)-2-(2-methylphenyl)ethyl]amino]purin-9-yl]-5-(hydroxymethyl)oxolane-3,4-diol Chemical compound COC1=CC(OC)=CC(C(CNC=2C=3N=CN(C=3N=CN=2)[C@H]2[C@@H]([C@H](O)[C@@H](CO)O2)O)C=2C(=CC=CC=2)C)=C1 BUHVIAUBTBOHAG-FOYDDCNASA-N 0.000 description 1
- KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 229910015868 MSiO Inorganic materials 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 230000003667 anti-reflective effect Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 229910001882 dioxygen Inorganic materials 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 235000011187 glycerol Nutrition 0.000 description 1
- 238000007602 hot air drying Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000001471 micro-filtration Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000012044 organic layer Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 238000013517 stratification Methods 0.000 description 1
- 238000000108 ultra-filtration Methods 0.000 description 1
- 239000012498 ultrapure water Substances 0.000 description 1
- 238000001039 wet etching Methods 0.000 description 1
Classifications
-
- 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
- G03F1/26—Phase shift masks [PSM]; PSM blanks; Preparation thereof
- G03F1/32—Attenuating PSM [att-PSM], e.g. halftone PSM or PSM having semi-transparent phase shift portion; 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
- 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
- G03F1/50—Mask blanks not covered by G03F1/20 - G03F1/34; 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
- 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
- G03F1/54—Absorbers, e.g. of opaque materials
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Preparing Plates And Mask In Photomechanical Process (AREA)
- Exposure And Positioning Against Photoresist Photosensitive Materials (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008295142A JP5356784B2 (ja) | 2008-11-19 | 2008-11-19 | フォトマスクブランクの製造方法及びフォトマスクの製造方法 |
| JP2008-295142 | 2008-11-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE102009053586A1 true DE102009053586A1 (de) | 2010-06-10 |
Family
ID=42145850
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE102009053586A Withdrawn DE102009053586A1 (de) | 2008-11-19 | 2009-11-17 | Photomaskenrohling, Herstellungsverfahren für Photomaskenrohling und Herstellungsverfahren für Photomaske |
Country Status (5)
| Country | Link |
|---|---|
| US (2) | US8197992B2 (enExample) |
| JP (1) | JP5356784B2 (enExample) |
| KR (1) | KR101676031B1 (enExample) |
| DE (1) | DE102009053586A1 (enExample) |
| TW (1) | TWI453535B (enExample) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5409298B2 (ja) * | 2009-11-26 | 2014-02-05 | Ｈｏｙａ株式会社 | マスクブランク及び転写用マスク並びにそれらの製造方法 |
| KR101883025B1 (ko) * | 2010-12-24 | 2018-07-27 | 호야 가부시키가이샤 | 마스크 블랭크 및 그 제조 방법, 및 전사용 마스크 및 그 제조 방법 |
| CN102929097A (zh) * | 2012-10-17 | 2013-02-13 | 深圳市华星光电技术有限公司 | 光罩、tft玻璃基板及其制造方法 |
| JP5802294B2 (ja) * | 2014-03-06 | 2015-10-28 | Hoya株式会社 | フォトマスクブランクの製造方法及びフォトマスクの製造方法 |
| TWI835695B (zh) * | 2018-11-30 | 2024-03-11 | 日商Ｈｏｙａ股份有限公司 | 光罩基底、光罩之製造方法及顯示裝置之製造方法 |
| JP2021004920A (ja) * | 2019-06-25 | 2021-01-14 | Hoya株式会社 | マスクブランク、転写用マスクの製造方法、及び半導体デバイスの製造方法 |
| JP2022045198A (ja) * | 2020-09-08 | 2022-03-18 | 凸版印刷株式会社 | 位相シフトマスクブランク、位相シフトマスク及び位相シフトマスクの製造方法 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002156742A (ja) | 2000-11-20 | 2002-05-31 | Shin Etsu Chem Co Ltd | 位相シフトマスクブランク、位相シフトマスク及びこれらの製造方法 |
| JP2008295142A (ja) | 2007-05-23 | 2008-12-04 | Toyo Electric Mfg Co Ltd | 電気車用の半導体冷却装置 |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09139514A (ja) * | 1995-11-13 | 1997-05-27 | Nec Kansai Ltd | 太陽電池およびその製造方法 |
| JPH11184067A (ja) * | 1997-12-19 | 1999-07-09 | Hoya Corp | 位相シフトマスク及び位相シフトマスクブランク |
| JP2002169265A (ja) | 2000-12-01 | 2002-06-14 | Hoya Corp | フォトマスクブランクス及びフォトマスクブランクスの製造方法 |
| JP4600629B2 (ja) * | 2001-06-26 | 2010-12-15 | 信越化学工業株式会社 | 位相シフトマスクブランク及びその製造方法 |
| US20040146650A1 (en) * | 2002-10-29 | 2004-07-29 | Microfabrica Inc. | EFAB methods and apparatus including spray metal or powder coating processes |
| EP1698647A4 (en) | 2003-12-26 | 2008-01-30 | Kansai Paint Co Ltd | POLYMER AND PROCESS FOR PRODUCING THE SAME |
| DE112005001588B4 (de) * | 2004-07-09 | 2021-02-25 | Hoya Corp. | Fotomaskenrohling, Fotomaskenherstellungsverfahren und Halbleiterbausteinherstellungsverfahren |
| JP2007128799A (ja) * | 2005-11-07 | 2007-05-24 | Seiko Epson Corp | 有機ｅｌ装置の製造方法、及び有機ｅｌ装置、並びに有機ｅｌ装置の製造装置 |
| JP4737426B2 (ja) * | 2006-04-21 | 2011-08-03 | 信越化学工業株式会社 | フォトマスクブランク |
| JP4958149B2 (ja) * | 2006-11-01 | 2012-06-20 | Ｈｏｙａ株式会社 | 位相シフトマスクブランクの製造方法及び位相シフトマスクの製造方法 |
-
2008
- 2008-11-19 JP JP2008295142A patent/JP5356784B2/ja not_active Expired - Fee Related
-
2009
- 2009-11-17 DE DE102009053586A patent/DE102009053586A1/de not_active Withdrawn
- 2009-11-18 US US12/620,805 patent/US8197992B2/en not_active Expired - Fee Related
- 2009-11-18 KR KR1020090111506A patent/KR101676031B1/ko not_active Expired - Fee Related
- 2009-11-18 TW TW098139064A patent/TWI453535B/zh not_active IP Right Cessation
-
2012
- 2012-05-01 US US13/460,893 patent/US8709683B2/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002156742A (ja) | 2000-11-20 | 2002-05-31 | Shin Etsu Chem Co Ltd | 位相シフトマスクブランク、位相シフトマスク及びこれらの製造方法 |
| JP2008295142A (ja) | 2007-05-23 | 2008-12-04 | Toyo Electric Mfg Co Ltd | 電気車用の半導体冷却装置 |
Also Published As
| Publication number | Publication date |
|---|---|
| US20120214093A1 (en) | 2012-08-23 |
| JP5356784B2 (ja) | 2013-12-04 |
| JP2010122409A (ja) | 2010-06-03 |
| US8709683B2 (en) | 2014-04-29 |
| US20100124711A1 (en) | 2010-05-20 |
| TW201109829A (en) | 2011-03-16 |
| KR20100056404A (ko) | 2010-05-27 |
| KR101676031B1 (ko) | 2016-11-14 |
| US8197992B2 (en) | 2012-06-12 |
| TWI453535B (zh) | 2014-09-21 |
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