KR0169959B1 - 패턴 형성 방법 - Google Patents
패턴 형성 방법 Download PDFInfo
- Publication number
- KR0169959B1 KR0169959B1 KR1019890018260A KR890018260A KR0169959B1 KR 0169959 B1 KR0169959 B1 KR 0169959B1 KR 1019890018260 A KR1019890018260 A KR 1019890018260A KR 890018260 A KR890018260 A KR 890018260A KR 0169959 B1 KR0169959 B1 KR 0169959B1
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- KR
- South Korea
- Prior art keywords
- mask
- pattern
- substrate
- deposition
- materials
- Prior art date
Links
- 238000000034 method Methods 0.000 title description 49
- 238000000059 patterning Methods 0.000 title description 3
- 239000011859 microparticle Substances 0.000 title 1
- 239000000463 material Substances 0.000 claims description 104
- 239000000758 substrate Substances 0.000 claims description 41
- 238000000151 deposition Methods 0.000 claims description 31
- 230000008021 deposition Effects 0.000 claims description 21
- 238000005530 etching Methods 0.000 claims description 18
- 239000000126 substance Substances 0.000 claims description 5
- 230000000873 masking effect Effects 0.000 claims description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 24
- 229910052802 copper Inorganic materials 0.000 description 23
- 239000010949 copper Substances 0.000 description 23
- 239000010410 layer Substances 0.000 description 21
- 239000010408 film Substances 0.000 description 19
- 229920002120 photoresistant polymer Polymers 0.000 description 17
- 230000002411 adverse Effects 0.000 description 8
- 229910052751 metal Inorganic materials 0.000 description 7
- 239000002184 metal Substances 0.000 description 7
- 239000002245 particle Substances 0.000 description 7
- 239000010409 thin film Substances 0.000 description 7
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 6
- 238000000576 coating method Methods 0.000 description 6
- 229920001721 polyimide Polymers 0.000 description 6
- 239000011248 coating agent Substances 0.000 description 5
- 150000002739 metals Chemical class 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 239000004642 Polyimide Substances 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- 238000009826 distribution Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000009713 electroplating Methods 0.000 description 4
- 238000000206 photolithography Methods 0.000 description 4
- 239000000919 ceramic Substances 0.000 description 3
- 238000005137 deposition process Methods 0.000 description 3
- 238000005566 electron beam evaporation Methods 0.000 description 3
- 230000008020 evaporation Effects 0.000 description 3
- 238000001704 evaporation Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000002253 acid Substances 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000001939 inductive effect Effects 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- KMUONIBRACKNSN-UHFFFAOYSA-N potassium dichromate Chemical compound [K+].[K+].[O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O KMUONIBRACKNSN-UHFFFAOYSA-N 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 230000002441 reversible effect Effects 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 241000490025 Schefflera digitata Species 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- NBZLLOYLSHKTCR-UHFFFAOYSA-N [K+].[K+].[O-][Cr]([O-])=O Chemical compound [K+].[K+].[O-][Cr]([O-])=O NBZLLOYLSHKTCR-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000012790 adhesive layer Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000001311 chemical methods and process Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000011889 copper foil Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 235000015250 liver sausages Nutrition 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 238000001465 metallisation Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000012811 non-conductive material Substances 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 239000000546 pharmaceutical excipient Substances 0.000 description 1
- 229920003223 poly(pyromellitimide-1,4-diphenyl ether) Polymers 0.000 description 1
- 229920006254 polymer film Polymers 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000007261 regionalization Effects 0.000 description 1
- 239000002990 reinforced plastic Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 239000010959 steel Substances 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
- 238000007740 vapor deposition Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
Classifications
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/02—Apparatus or processes for manufacturing printed circuits in which the conductive material is applied to the surface of the insulating support and is thereafter removed from such areas of the surface which are not intended for current conducting or shielding
- H05K3/06—Apparatus or processes for manufacturing printed circuits in which the conductive material is applied to the surface of the insulating support and is thereafter removed from such areas of the surface which are not intended for current conducting or shielding the conductive material being removed chemically or electrolytically, e.g. by photo-etch process
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/02—Apparatus or processes for manufacturing printed circuits in which the conductive material is applied to the surface of the insulating support and is thereafter removed from such areas of the surface which are not intended for current conducting or shielding
- H05K3/04—Apparatus or processes for manufacturing printed circuits in which the conductive material is applied to the surface of the insulating support and is thereafter removed from such areas of the surface which are not intended for current conducting or shielding the conductive material being removed mechanically, e.g. by punching
- H05K3/046—Apparatus or processes for manufacturing printed circuits in which the conductive material is applied to the surface of the insulating support and is thereafter removed from such areas of the surface which are not intended for current conducting or shielding the conductive material being removed mechanically, e.g. by punching by selective transfer or selective detachment of a conductive layer
- H05K3/048—Apparatus or processes for manufacturing printed circuits in which the conductive material is applied to the surface of the insulating support and is thereafter removed from such areas of the surface which are not intended for current conducting or shielding the conductive material being removed mechanically, e.g. by punching by selective transfer or selective detachment of a conductive layer using a lift-off resist pattern or a release layer pattern
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/04—Coating on selected surface areas, e.g. using masks
- C23C14/042—Coating on selected surface areas, e.g. using masks using masks
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F1/00—Etching metallic material by chemical means
- C23F1/02—Local etching
-
- Y—GENERAL 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24802—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
-
- Y—GENERAL 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
- Y10T428/2982—Particulate matter [e.g., sphere, flake, etc.]
-
- Y—GENERAL 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
- Y10T428/2982—Particulate matter [e.g., sphere, flake, etc.]
- Y10T428/2991—Coated
-
- Y—GENERAL 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
- Y10T428/2982—Particulate matter [e.g., sphere, flake, etc.]
- Y10T428/2991—Coated
- Y10T428/2993—Silicic or refractory material containing [e.g., tungsten oxide, glass, cement, etc.]
-
- Y—GENERAL 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
- Y10T428/2982—Particulate matter [e.g., sphere, flake, etc.]
- Y10T428/2991—Coated
- Y10T428/2998—Coated including synthetic resin or polymer
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
- General Chemical & Material Sciences (AREA)
- Manufacturing Of Printed Circuit Boards (AREA)
- Manufacturing Of Printed Wiring (AREA)
- ing And Chemical Polishing (AREA)
Abstract
Description
Claims (1)
- 시이트형 가요성 기판을 제공하여, 상기 기판의 표면에 대체로 수직인 물리적 돌출부를 형성하는 에칭 가능한 제1 마스킹 물질을 상기 기판의 하나의 주표면의 적어도 일부에 접합시키는 단계와; 노출된 기판 및 상기 기판의 상기 주표면의 평면에 평행인 마스크 표면에 1차로 증착되며 상기 제1 물질과는 화학적으로 다른 제2 패턴 물질을 마스크 처리된 영역의 적어도 일부분위에 증착시키는 단계와; 상기 마스크 물질이 완전히 덮히거나 밀봉되지 않도록 상기 증착을 제어하는 단계와; 상기 제1 마스킹 물질을 선택적으로 에칭 제거하여 상기 기판상에 상기 제2 물질의 패턴을 남기기 위해 화학제를 도포하는 단계를 포함하는 것을 특징으로 하는 가요성 기판상에 패턴화된 증착물을 제조하는 방법.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US281,655 | 1988-12-09 | ||
US07/281,655 US4964945A (en) | 1988-12-09 | 1988-12-09 | Lift off patterning process on a flexible substrate |
Publications (2)
Publication Number | Publication Date |
---|---|
KR900010472A KR900010472A (ko) | 1990-07-07 |
KR0169959B1 true KR0169959B1 (ko) | 1999-05-01 |
Family
ID=23078237
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019890018260A KR0169959B1 (ko) | 1988-12-09 | 1989-12-08 | 패턴 형성 방법 |
Country Status (7)
Country | Link |
---|---|
US (2) | US4964945A (ko) |
JP (1) | JP2744826B2 (ko) |
KR (1) | KR0169959B1 (ko) |
CA (1) | CA2002736A1 (ko) |
DE (1) | DE3940087A1 (ko) |
GB (1) | GB2228372B (ko) |
MY (1) | MY104668A (ko) |
Families Citing this family (81)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0428357B1 (en) * | 1989-11-13 | 1996-04-03 | Fujitsu Limited | Josephson junction apparatus |
US5196395A (en) * | 1991-03-04 | 1993-03-23 | Superconductor Technologies, Inc. | Method for producing crystallographic boundary junctions in oxide superconducting thin films |
US5246538A (en) * | 1991-09-16 | 1993-09-21 | Phillips Petroleum Company | Adhesive bonding of poly(arylene sulfide) surfaces |
JPH05129760A (ja) * | 1991-11-06 | 1993-05-25 | Fujitsu Ltd | 導体パターンの形成方法 |
US5362534A (en) * | 1993-08-23 | 1994-11-08 | Parlex Corporation | Multiple layer printed circuit boards and method of manufacture |
US5376232A (en) * | 1993-08-23 | 1994-12-27 | Parlex Corporation | Method of manufacturing a printed circuit board |
US5522963A (en) * | 1994-05-31 | 1996-06-04 | International Business Machines Corporation | Method for machining and depositing metallurgy on ceramic layers |
KR100427708B1 (ko) * | 1994-11-18 | 2004-07-16 | 가부시키가이샤 한도오따이 에네루기 켄큐쇼 | 표시장치용기판부재제작방법과제작장치 |
US5814567A (en) * | 1996-06-14 | 1998-09-29 | Kimberly-Clark Worldwide, Inc. | Durable hydrophilic coating for a porous hydrophobic substrate |
JP3217999B2 (ja) | 1997-12-03 | 2001-10-15 | セイコーインスツルメンツ株式会社 | 部品製作方法及び部品製作装置 |
US6873087B1 (en) | 1999-10-29 | 2005-03-29 | Board Of Regents, The University Of Texas System | High precision orientation alignment and gap control stages for imprint lithography processes |
US6696220B2 (en) * | 2000-10-12 | 2004-02-24 | Board Of Regents, The University Of Texas System | Template for room temperature, low pressure micro-and nano-imprint lithography |
KR100862301B1 (ko) * | 2000-07-16 | 2008-10-13 | 보드 오브 리전츠, 더 유니버시티 오브 텍사스 시스템 | 임프린트 리소그래피를 위한 고분해능 오버레이 정렬 방법 및 시스템 |
EP1303793B1 (en) | 2000-07-17 | 2015-01-28 | Board Of Regents, The University Of Texas System | Method and system of automatic fluid dispensing for imprint lithography processes |
JP2004505273A (ja) | 2000-08-01 | 2004-02-19 | ボード・オブ・リージエンツ,ザ・ユニバーシテイ・オブ・テキサス・システム | 転写リソグラフィのための透明テンプレートと基板の間のギャップおよび配向を高精度でセンシングするための方法 |
US8016277B2 (en) | 2000-08-21 | 2011-09-13 | Board Of Regents, The University Of Texas System | Flexure based macro motion translation stage |
US6964793B2 (en) | 2002-05-16 | 2005-11-15 | Board Of Regents, The University Of Texas System | Method for fabricating nanoscale patterns in light curable compositions using an electric field |
WO2003048726A2 (en) * | 2001-11-30 | 2003-06-12 | Tracking Technology Inc. | Taggants for products and method of taggant identification |
EP1495153B1 (de) * | 2002-04-15 | 2008-10-15 | Schott Ag | Verfahren zur beschichtung von metalloberflächen |
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US6908861B2 (en) * | 2002-07-11 | 2005-06-21 | Molecular Imprints, Inc. | Method for imprint lithography using an electric field |
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US6871558B2 (en) * | 2002-12-12 | 2005-03-29 | Molecular Imprints, Inc. | Method for determining characteristics of substrate employing fluid geometries |
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US20040175842A1 (en) * | 2003-03-04 | 2004-09-09 | Roitman Daniel B. | Near-field and far-field encoding of microbeads for bioassays |
US20040175843A1 (en) * | 2003-03-04 | 2004-09-09 | Roitman Daniel B. | Near-field and far-field encoding and shaping of microbeads for bioassays |
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US7136150B2 (en) | 2003-09-25 | 2006-11-14 | Molecular Imprints, Inc. | Imprint lithography template having opaque alignment marks |
US8211214B2 (en) | 2003-10-02 | 2012-07-03 | Molecular Imprints, Inc. | Single phase fluid imprint lithography method |
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KR101281775B1 (ko) | 2003-12-19 | 2013-07-15 | 더 유니버시티 오브 노쓰 캐롤라이나 엣 채플 힐 | 소프트 또는 임프린트 리소그래피를 이용하여 분리된마이크로- 및 나노- 구조를 제작하는 방법 |
US9040090B2 (en) * | 2003-12-19 | 2015-05-26 | The University Of North Carolina At Chapel Hill | Isolated and fixed micro and nano structures and methods thereof |
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-
1988
- 1988-12-09 US US07/281,655 patent/US4964945A/en not_active Expired - Fee Related
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1989
- 1989-11-10 CA CA002002736A patent/CA2002736A1/en not_active Abandoned
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- 1989-11-24 GB GB8926659A patent/GB2228372B/en not_active Expired - Fee Related
- 1989-12-04 DE DE3940087A patent/DE3940087A1/de not_active Withdrawn
- 1989-12-08 JP JP1320408A patent/JP2744826B2/ja not_active Expired - Lifetime
- 1989-12-08 KR KR1019890018260A patent/KR0169959B1/ko not_active IP Right Cessation
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1992
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US4964945A (en) | 1990-10-23 |
GB2228372A (en) | 1990-08-22 |
US5294476A (en) | 1994-03-15 |
GB8926659D0 (en) | 1990-01-17 |
KR900010472A (ko) | 1990-07-07 |
MY104668A (en) | 1994-05-31 |
JP2744826B2 (ja) | 1998-04-28 |
CA2002736A1 (en) | 1990-06-09 |
GB2228372B (en) | 1993-06-23 |
DE3940087A1 (de) | 1990-06-13 |
JPH02260492A (ja) | 1990-10-23 |
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