KR100394445B1 - 포지티브포토레지스트의현상방법및이를위한조성물 - Google Patents
포지티브포토레지스트의현상방법및이를위한조성물 Download PDFInfo
- Publication number
- KR100394445B1 KR100394445B1 KR1019970704871A KR19970704871A KR100394445B1 KR 100394445 B1 KR100394445 B1 KR 100394445B1 KR 1019970704871 A KR1019970704871 A KR 1019970704871A KR 19970704871 A KR19970704871 A KR 19970704871A KR 100394445 B1 KR100394445 B1 KR 100394445B1
- Authority
- KR
- South Korea
- Prior art keywords
- ammonium hydroxide
- composition
- base
- formula
- fluorinated alkyl
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 33
- 239000000203 mixture Substances 0.000 title claims abstract description 33
- 229920002120 photoresistant polymer Polymers 0.000 title claims abstract description 21
- 239000004094 surface-active agent Substances 0.000 claims abstract description 43
- 125000000217 alkyl group Chemical group 0.000 claims abstract description 19
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000000908 ammonium hydroxide Substances 0.000 claims abstract description 17
- WGTYBPLFGIVFAS-UHFFFAOYSA-M tetramethylammonium hydroxide Chemical compound [OH-].C[N+](C)(C)C WGTYBPLFGIVFAS-UHFFFAOYSA-M 0.000 claims description 18
- 150000001875 compounds Chemical class 0.000 claims description 12
- 239000000758 substrate Substances 0.000 claims description 10
- URQUNWYOBNUYJQ-UHFFFAOYSA-N diazonaphthoquinone Chemical compound C1=CC=C2C(=O)C(=[N]=[N])C=CC2=C1 URQUNWYOBNUYJQ-UHFFFAOYSA-N 0.000 claims description 5
- 125000000008 (C1-C10) alkyl group Chemical group 0.000 claims description 3
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims description 3
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 claims description 3
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 3
- 229920001568 phenolic resin Polymers 0.000 claims description 3
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 claims description 3
- VHLDQAOFSQCOFS-UHFFFAOYSA-M tetrakis(2-hydroxyethyl)azanium;hydroxide Chemical compound [OH-].OCC[N+](CCO)(CCO)CCO VHLDQAOFSQCOFS-UHFFFAOYSA-M 0.000 claims description 3
- 125000006832 (C1-C10) alkylene group Chemical group 0.000 claims description 2
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 claims 2
- 229910052739 hydrogen Inorganic materials 0.000 claims 2
- 239000001257 hydrogen Substances 0.000 claims 2
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 claims 1
- GFEPDPYXKGSTNK-UHFFFAOYSA-N [OH-].[NH4+].CC(CO)(C)C Chemical compound [OH-].[NH4+].CC(CO)(C)C GFEPDPYXKGSTNK-UHFFFAOYSA-N 0.000 claims 1
- 238000005406 washing Methods 0.000 claims 1
- 125000000472 sulfonyl group Chemical group *S(*)(=O)=O 0.000 abstract description 4
- 125000003277 amino group Chemical group 0.000 abstract 1
- 239000000725 suspension Substances 0.000 abstract 1
- FHIVAFMUCKRCQO-UHFFFAOYSA-N diazinon Chemical compound CCOP(=S)(OCC)OC1=CC(C)=NC(C(C)C)=N1 FHIVAFMUCKRCQO-UHFFFAOYSA-N 0.000 description 12
- 235000012431 wafers Nutrition 0.000 description 12
- 239000000126 substance Substances 0.000 description 11
- 239000000243 solution Substances 0.000 description 9
- 230000000052 comparative effect Effects 0.000 description 5
- -1 heterocyclic hydroxyalkyl compound Chemical class 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 229920003986 novolac Polymers 0.000 description 4
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 3
- 229930192627 Naphthoquinone Natural products 0.000 description 3
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 150000002791 naphthoquinones Chemical class 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- KETQAJRQOHHATG-UHFFFAOYSA-N 1,2-naphthoquinone Chemical compound C1=CC=C2C(=O)C(=O)C=CC2=C1 KETQAJRQOHHATG-UHFFFAOYSA-N 0.000 description 2
- TUAMRELNJMMDMT-UHFFFAOYSA-N 3,5-xylenol Chemical compound CC1=CC(C)=CC(O)=C1 TUAMRELNJMMDMT-UHFFFAOYSA-N 0.000 description 2
- FUGYGGDSWSUORM-UHFFFAOYSA-N 4-hydroxystyrene Chemical compound OC1=CC=C(C=C)C=C1 FUGYGGDSWSUORM-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000003093 cationic surfactant Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- YPKJPFXVPWGYJL-UHFFFAOYSA-N naphthalene-1,4-dione;sulfuryl dichloride;diazide Chemical compound [N-]=[N+]=[N-].[N-]=[N+]=[N-].ClS(Cl)(=O)=O.C1=CC=C2C(=O)C=CC(=O)C2=C1 YPKJPFXVPWGYJL-UHFFFAOYSA-N 0.000 description 2
- 150000002989 phenols Chemical class 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- OAYXUHPQHDHDDZ-UHFFFAOYSA-N 2-(2-butoxyethoxy)ethanol Chemical compound CCCCOCCOCCO OAYXUHPQHDHDDZ-UHFFFAOYSA-N 0.000 description 1
- JECYNCQXXKQDJN-UHFFFAOYSA-N 2-(2-methylhexan-2-yloxymethyl)oxirane Chemical compound CCCCC(C)(C)OCC1CO1 JECYNCQXXKQDJN-UHFFFAOYSA-N 0.000 description 1
- AZMMSEASPQHHTC-UHFFFAOYSA-N 2-[1,1-bis(2-hydroxyphenyl)ethyl]phenol Chemical compound C=1C=CC=C(O)C=1C(C=1C(=CC=CC=1)O)(C)C1=CC=CC=C1O AZMMSEASPQHHTC-UHFFFAOYSA-N 0.000 description 1
- XLLXMBCBJGATSP-UHFFFAOYSA-N 2-phenylethenol Chemical compound OC=CC1=CC=CC=C1 XLLXMBCBJGATSP-UHFFFAOYSA-N 0.000 description 1
- PYSRRFNXTXNWCD-UHFFFAOYSA-N 3-(2-phenylethenyl)furan-2,5-dione Chemical compound O=C1OC(=O)C(C=CC=2C=CC=CC=2)=C1 PYSRRFNXTXNWCD-UHFFFAOYSA-N 0.000 description 1
- JLBJTVDPSNHSKJ-UHFFFAOYSA-N 4-Methylstyrene Chemical compound CC1=CC=C(C=C)C=C1 JLBJTVDPSNHSKJ-UHFFFAOYSA-N 0.000 description 1
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 229920000147 Styrene maleic anhydride Polymers 0.000 description 1
- 238000000862 absorption spectrum Methods 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- YOALFLHFSFEMLP-UHFFFAOYSA-N azane;2,2,3,3,4,4,5,5,6,6,7,7,8,8,8-pentadecafluorooctanoic acid Chemical compound [NH4+].[O-]C(=O)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)F YOALFLHFSFEMLP-UHFFFAOYSA-N 0.000 description 1
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- OEYIOHPDSNJKLS-UHFFFAOYSA-N choline Chemical compound C[N+](C)(C)CCO OEYIOHPDSNJKLS-UHFFFAOYSA-N 0.000 description 1
- 229960001231 choline Drugs 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 125000003709 fluoroalkyl group Chemical group 0.000 description 1
- UQEAIHBTYFGYIE-UHFFFAOYSA-N hexamethyldisiloxane Chemical compound C[Si](C)(C)O[Si](C)(C)C UQEAIHBTYFGYIE-UHFFFAOYSA-N 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000002563 ionic surfactant Substances 0.000 description 1
- RLSSMJSEOOYNOY-UHFFFAOYSA-N m-cresol Chemical compound CC1=CC=CC(O)=C1 RLSSMJSEOOYNOY-UHFFFAOYSA-N 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- JESXATFQYMPTNL-UHFFFAOYSA-N mono-hydroxyphenyl-ethylene Natural products OC1=CC=CC=C1C=C JESXATFQYMPTNL-UHFFFAOYSA-N 0.000 description 1
- 239000002736 nonionic surfactant Substances 0.000 description 1
- 229920000847 nonoxynol Polymers 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 125000001273 sulfonato group Chemical class [O-]S(*)(=O)=O 0.000 description 1
- 238000012876 topography 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
- 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
- G03F7/26—Processing photosensitive materials; Apparatus therefor
- G03F7/30—Imagewise removal using liquid means
- G03F7/32—Liquid compositions therefor, e.g. developers
-
- 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
- G03F7/26—Processing photosensitive materials; Apparatus therefor
- G03F7/30—Imagewise removal using liquid means
- G03F7/32—Liquid compositions therefor, e.g. developers
- G03F7/322—Aqueous alkaline compositions
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Photosensitive Polymer And Photoresist Processing (AREA)
- Exposure Of Semiconductors, Excluding Electron Or Ion Beam Exposure (AREA)
Abstract
Description
Claims (17)
- 수성 수산화암모늄 염기와 10 내지 30 중량ppm의 양으로 존재하는 불소 첨가된 알킬 알콕실레이트 계면 활성제를 함유하는 수성 염기 현상제 조성물을 포지티브 포토레지스트 필름에 도포하는 단계, 및 상기 필름으로부터 현상제 조성물을 씻어내는 단계를 필수 단계로 하는 포지티브 포토레지스트 필름 기판의 현상 방법.
- 제1항에 있어서, 상기 현상제 조성물 중 수산화암모늄 염기의 농도가 0.15 내지 0.5 노르말인 것인 방법.
- 제1항에 있어서, 상기 현상제 조성물 중 수산화암모늄 염기의 농도가 0.2 내지 0.35 노르말인 것인 방법.
- 제1항에 있어서, 상기 현상제 조성물 중 수산화암모늄 염기의 농도가 0.261 노르말인 것인 방법.
- 제1항에 있어서, 상기 수산화암모늄 염기가 수산화테트라메틸암모늄, 수산화트리메틸에탄올암모늄, 수산화테트라(2-히드록시에틸)암모늄 및 이들의 혼합물로 구성된 군에서 선택되는 것인 방법.
- 제5항에 있어서, 상기 수산화암모늄 염기가 수산화테트라메틸암모늄인 것인 방법.
- 제1항에 있어서, 상기 기판이 페놀-포름알데히드 수지 및 디아조나프토퀴논 광활성 화합물을 포함하는 것인 방법.
- 수성 수산화암모늄과 10 내지 30 중량ppm의 양으로 존재하는 불소 첨가된 알킬 알콕실레이트 계면 활성제를 포함하는, 포지티브 포토레지스트와 함께 사용하기 위한 수성 염기 현상제 조성물.
- 제11항에 있어서, 상기 현상제 조성물 중 수산화암모늄 염기의 농도가 0.15 내지 0.5 노르말인 것인 조성물.
- 제12항에 있어서, 상기 현상제 조성물 중 수산화암모늄 염기의 농도가 0.2 내지 0.35 노르말인 것인 조성물.
- 제13항에 있어서, 상기 현상제 조성물 중 수산화암모늄 염기의 농도가 0.261 노르말인 것인 조성물.
- 제11항에 있어서, 상기 수산화암모늄 염기가 수산화테트라메틸암모늄, 수산화트리메틸에탄올암모늄, 수산화테트라(2-히드록시에틸)암모늄 및 이들의 혼합물로 구성된 군에서 선택되는 것인 조성물.
- 제15항에 있어서, 상기 수산화암모늄 염기가 수산화테트라메틸암모늄인 것인 조성물.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US37617295A | 1995-01-20 | 1995-01-20 | |
US08/376172 | 1995-01-20 | ||
US8/376172 | 1995-01-20 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR19980701480A KR19980701480A (ko) | 1998-05-15 |
KR100394445B1 true KR100394445B1 (ko) | 2004-05-24 |
Family
ID=23483983
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019970704871A KR100394445B1 (ko) | 1995-01-20 | 1996-01-19 | 포지티브포토레지스트의현상방법및이를위한조성물 |
Country Status (8)
Country | Link |
---|---|
US (1) | US5821036A (ko) |
EP (1) | EP0804753B1 (ko) |
JP (1) | JP3578462B2 (ko) |
KR (1) | KR100394445B1 (ko) |
CN (1) | CN1072813C (ko) |
DE (1) | DE69612656T2 (ko) |
TW (1) | TW353159B (ko) |
WO (1) | WO1996022564A1 (ko) |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3728945B2 (ja) * | 1998-10-30 | 2005-12-21 | オルガノ株式会社 | フォトレジスト現像廃液からの現像液の回収再利用方法及び装置 |
TW527363B (en) * | 1999-09-08 | 2003-04-11 | Shinetsu Chemical Co | Polymers, chemical amplification resist compositions and patterning process |
US6120978A (en) * | 2000-01-06 | 2000-09-19 | Air Products And Chemicals, Inc. | Use of N,N-dialkyl ureas in photoresist developers |
US6136514A (en) * | 2000-01-31 | 2000-10-24 | Advanced Micro Devices, Inc. | Resist developer saving system using material to reduce surface tension and wet resist surface |
JP2002049161A (ja) * | 2000-08-04 | 2002-02-15 | Clariant (Japan) Kk | 被覆層現像用界面活性剤水溶液 |
US20020187438A1 (en) * | 2001-06-12 | 2002-12-12 | Ching-Yu Chang | Development method for manufacturing semiconductors |
AU2002334796A1 (en) * | 2001-10-03 | 2003-04-14 | Silicon Valley Group, Inc. | Method and apparatus for mitigating cross-contamination between liquid dispensing jets in close proximity to a surface |
EP1476788A2 (en) * | 2002-02-21 | 2004-11-17 | Honeywell International Inc. | Fluorinated molecules and methods of making and using same |
US20040126695A1 (en) * | 2002-05-07 | 2004-07-01 | Honeywell International, Inc. | Fluorinated polymers |
US20040091813A1 (en) * | 2002-11-05 | 2004-05-13 | Honeywell International Inc. | Fluorinated polymers |
KR100634164B1 (ko) * | 2003-03-13 | 2006-10-16 | 삼성전자주식회사 | 반도체 제조 공정에 사용되는 세정액 |
TWI304917B (en) * | 2003-05-20 | 2009-01-01 | Tokyo Ohka Kogyo Co Ltd | Positive photoresist composition for discharge nozzle type application and resist pattern formation method |
US7083903B2 (en) * | 2003-06-17 | 2006-08-01 | Lam Research Corporation | Methods of etching photoresist on substrates |
US20060008731A1 (en) * | 2004-07-09 | 2006-01-12 | Michael Van Der Puy | Novel photoresist monomers and polymers |
US20060008730A1 (en) * | 2004-07-09 | 2006-01-12 | Puy Michael V D | Monomers for photoresists bearing acid-labile groups of reduced optical density |
US7605063B2 (en) * | 2006-05-10 | 2009-10-20 | Lam Research Corporation | Photoresist stripping chamber and methods of etching photoresist on substrates |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4628023A (en) * | 1981-04-10 | 1986-12-09 | Shipley Company Inc. | Metal ion free photoresist developer composition with lower alkyl quaternary ammonium hydrozide as alkalai agent and a quaternary ammonium compound as surfactant |
US4784937A (en) * | 1985-08-06 | 1988-11-15 | Tokyo Ohka Kogyo Co., Ltd. | Developing solution for positive-working photoresist comprising a metal ion free organic base and an anionic surfactant |
US4710449A (en) * | 1986-01-29 | 1987-12-01 | Petrarch Systems, Inc. | High contrast low metal ion positive photoresist developing method using aqueous base solutions with surfactants |
US4732836A (en) * | 1986-05-02 | 1988-03-22 | Hoechst Celanese Corporation | Novel mixed ester O-quinone photosensitizers |
US4863827A (en) * | 1986-10-20 | 1989-09-05 | American Hoechst Corporation | Postive working multi-level photoresist |
DE3827567A1 (de) * | 1988-08-13 | 1990-02-22 | Basf Ag | Waessrige entwicklerloesung fuer positiv arbeitende photoresists |
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1996
- 1996-01-19 CN CN96191526A patent/CN1072813C/zh not_active Expired - Fee Related
- 1996-01-19 DE DE69612656T patent/DE69612656T2/de not_active Expired - Fee Related
- 1996-01-19 JP JP52244196A patent/JP3578462B2/ja not_active Expired - Fee Related
- 1996-01-19 WO PCT/US1996/000917 patent/WO1996022564A1/en active IP Right Grant
- 1996-01-19 EP EP96904493A patent/EP0804753B1/en not_active Expired - Lifetime
- 1996-01-19 KR KR1019970704871A patent/KR100394445B1/ko not_active IP Right Cessation
- 1996-01-24 TW TW085100831A patent/TW353159B/zh active
-
1997
- 1997-10-27 US US08/960,105 patent/US5821036A/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JPH10512973A (ja) | 1998-12-08 |
US5821036A (en) | 1998-10-13 |
TW353159B (en) | 1999-02-21 |
WO1996022564A1 (en) | 1996-07-25 |
EP0804753A1 (en) | 1997-11-05 |
CN1168179A (zh) | 1997-12-17 |
DE69612656T2 (de) | 2001-10-18 |
EP0804753B1 (en) | 2001-05-02 |
DE69612656D1 (de) | 2001-06-07 |
CN1072813C (zh) | 2001-10-10 |
JP3578462B2 (ja) | 2004-10-20 |
KR19980701480A (ko) | 1998-05-15 |
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