JP5451962B2 - オーバーコートされるフォトレジストと共に用いるためのコーティング組成物 - Google Patents
オーバーコートされるフォトレジストと共に用いるためのコーティング組成物 Download PDFInfo
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- JP5451962B2 JP5451962B2 JP2007046770A JP2007046770A JP5451962B2 JP 5451962 B2 JP5451962 B2 JP 5451962B2 JP 2007046770 A JP2007046770 A JP 2007046770A JP 2007046770 A JP2007046770 A JP 2007046770A JP 5451962 B2 JP5451962 B2 JP 5451962B2
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- LDLODAMOCOQVPP-UHFFFAOYSA-N anthracene;prop-2-enoic acid Chemical compound OC(=O)C=C.C1=CC=CC2=CC3=CC=CC=C3C=C21 LDLODAMOCOQVPP-UHFFFAOYSA-N 0.000 description 1
- 125000002178 anthracenyl group Chemical group C1(=CC=CC2=CC3=CC=CC=C3C=C12)* 0.000 description 1
- DZBUGLKDJFMEHC-UHFFFAOYSA-N benzoquinolinylidene Natural products C1=CC=CC2=CC3=CC=CC=C3N=C21 DZBUGLKDJFMEHC-UHFFFAOYSA-N 0.000 description 1
- AOJOEFVRHOZDFN-UHFFFAOYSA-N benzyl 2-methylprop-2-enoate Chemical compound CC(=C)C(=O)OCC1=CC=CC=C1 AOJOEFVRHOZDFN-UHFFFAOYSA-N 0.000 description 1
- GCTPMLUUWLLESL-UHFFFAOYSA-N benzyl prop-2-enoate Chemical compound C=CC(=O)OCC1=CC=CC=C1 GCTPMLUUWLLESL-UHFFFAOYSA-N 0.000 description 1
- DNFSNYQTQMVTOK-UHFFFAOYSA-N bis(4-tert-butylphenyl)iodanium Chemical compound C1=CC(C(C)(C)C)=CC=C1[I+]C1=CC=C(C(C)(C)C)C=C1 DNFSNYQTQMVTOK-UHFFFAOYSA-N 0.000 description 1
- FLJPGEWQYJVDPF-UHFFFAOYSA-L caesium sulfate Chemical compound [Cs+].[Cs+].[O-]S([O-])(=O)=O FLJPGEWQYJVDPF-UHFFFAOYSA-L 0.000 description 1
- 229960000846 camphor Drugs 0.000 description 1
- 229930008380 camphor Natural products 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 150000007942 carboxylates Chemical class 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000000994 contrast dye Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000003431 cross linking reagent Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 125000004185 ester group Chemical group 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 150000002170 ethers Chemical class 0.000 description 1
- 125000004494 ethyl ester group Chemical group 0.000 description 1
- LYCAIKOWRPUZTN-UHFFFAOYSA-N ethylene glycol Natural products OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 1
- MJEMIOXXNCZZFK-UHFFFAOYSA-N ethylone Chemical compound CCNC(C)C(=O)C1=CC=C2OCOC2=C1 MJEMIOXXNCZZFK-UHFFFAOYSA-N 0.000 description 1
- 239000012527 feed solution Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 229920002313 fluoropolymer Polymers 0.000 description 1
- 239000004811 fluoropolymer Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 125000005842 heteroatom Chemical group 0.000 description 1
- 125000000623 heterocyclic group Chemical group 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- XMBWDFGMSWQBCA-UHFFFAOYSA-N hydrogen iodide Chemical class I XMBWDFGMSWQBCA-UHFFFAOYSA-N 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 238000000671 immersion lithography Methods 0.000 description 1
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 125000000468 ketone group Chemical group 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000005499 meniscus Effects 0.000 description 1
- UZKWTJUDCOPSNM-UHFFFAOYSA-N methoxybenzene Substances CCCCOC=C UZKWTJUDCOPSNM-UHFFFAOYSA-N 0.000 description 1
- VLCAYQIMSMPEBW-UHFFFAOYSA-N methyl 3-hydroxy-2-methylidenebutanoate Chemical compound COC(=O)C(=C)C(C)O VLCAYQIMSMPEBW-UHFFFAOYSA-N 0.000 description 1
- 150000004702 methyl esters Chemical class 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- HEPOEAALKWFVLE-UHFFFAOYSA-N n -((perfluorooctanesulfonyl)oxy)-5-norbornene-2,3-dicarboximide Chemical compound C1=CC2CC1C1C2C(=O)N(OS(=O)(=O)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)F)C1=O HEPOEAALKWFVLE-UHFFFAOYSA-N 0.000 description 1
- 239000002101 nanobubble Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 125000004433 nitrogen atom Chemical group N* 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000005693 optoelectronics Effects 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 125000004430 oxygen atom Chemical group O* 0.000 description 1
- 125000005561 phenanthryl group Chemical group 0.000 description 1
- 150000002989 phenols Chemical class 0.000 description 1
- WRAQQYDMVSCOTE-UHFFFAOYSA-N phenyl prop-2-enoate Chemical compound C=CC(=O)OC1=CC=CC=C1 WRAQQYDMVSCOTE-UHFFFAOYSA-N 0.000 description 1
- 238000001020 plasma etching Methods 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- RUOJZAUFBMNUDX-UHFFFAOYSA-N propylene carbonate Chemical compound CC1COC(=O)O1 RUOJZAUFBMNUDX-UHFFFAOYSA-N 0.000 description 1
- 125000006413 ring segment Chemical group 0.000 description 1
- 238000007761 roller coating Methods 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 239000012488 sample solution Substances 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 150000003384 small molecules Chemical class 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 235000019795 sodium metasilicate Nutrition 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 125000003011 styrenyl group Chemical group [H]\C(*)=C(/[H])C1=C([H])C([H])=C([H])C([H])=C1[H] 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229940014800 succinic anhydride Drugs 0.000 description 1
- 150000008054 sulfonate salts Chemical class 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 125000004434 sulfur atom Chemical group 0.000 description 1
- MNEZBXTZLVGVNY-UHFFFAOYSA-N tert-butyl 2-(4-methylphenyl)sulfonyloxyacetate Chemical compound CC1=CC=C(S(=O)(=O)OCC(=O)OC(C)(C)C)C=C1 MNEZBXTZLVGVNY-UHFFFAOYSA-N 0.000 description 1
- 229920006029 tetra-polymer Polymers 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
- 238000001029 thermal curing Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
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- 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
- G03F7/004—Photosensitive materials
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- G03F7/091—Photosensitive materials characterised by structural details, e.g. supports, auxiliary layers characterised by antireflection means or light filtering or absorbing means, e.g. anti-halation, contrast enhancement
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- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
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- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
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-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D135/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a carboxyl radical, and containing at least another carboxyl radical in the molecule, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Coating compositions based on derivatives of such polymers
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D145/00—Coating compositions based on homopolymers or copolymers of compounds having no unsaturated aliphatic radicals in a side chain, and having one or more carbon-to-carbon double bonds in a carbocyclic or in a heterocyclic system; Coating compositions based on derivatives of such polymers
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D167/00—Coating compositions based on polyesters obtained by reactions forming a carboxylic ester link in the main chain; Coating compositions based on derivatives of such polymers
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- 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
- G03F7/20—Exposure; Apparatus therefor
- G03F7/2002—Exposure; Apparatus therefor with visible light or UV light, through an original having an opaque pattern on a transparent support, e.g. film printing, projection printing; by reflection of visible or UV light from an original such as a printed image
- G03F7/2004—Exposure; Apparatus therefor with visible light or UV light, through an original having an opaque pattern on a transparent support, e.g. film printing, projection printing; by reflection of visible or UV light from an original such as a printed image characterised by the use of a particular light source, e.g. fluorescent lamps or deep UV light
-
- 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
- H01L21/0271—Making masks on semiconductor bodies for further photolithographic processing not provided for in group H01L21/18 or H01L21/34 comprising organic layers
- H01L21/0273—Making masks on semiconductor bodies for further photolithographic processing not provided for in group H01L21/18 or H01L21/34 comprising organic layers characterised by the treatment of photoresist layers
- H01L21/0274—Photolithographic processes
- H01L21/0276—Photolithographic processes using an anti-reflective coating
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2312/00—Crosslinking
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L33/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
- C08L33/04—Homopolymers or copolymers of esters
- C08L33/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, which oxygen atoms are present only as part of the carboxyl radical
- C08L33/062—Copolymers with monomers not covered by C08L33/06
- C08L33/066—Copolymers with monomers not covered by C08L33/06 containing -OH groups
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
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- 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
- G03F7/004—Photosensitive materials
- G03F7/09—Photosensitive materials characterised by structural details, e.g. supports, auxiliary layers
- G03F7/094—Multilayer resist systems, e.g. planarising layers
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- 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
- G03F7/20—Exposure; Apparatus therefor
- G03F7/2041—Exposure; Apparatus therefor in the presence of a fluid, e.g. immersion; using fluid cooling means
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Wood Science & Technology (AREA)
- Materials Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Polymers & Plastics (AREA)
- Medicinal Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Power Engineering (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Materials For Photolithography (AREA)
- Optics & Photonics (AREA)
- Exposure Of Semiconductors, Excluding Electron Or Ion Beam Exposure (AREA)
- Paints Or Removers (AREA)
- Photosensitive Polymer And Photoresist Processing (AREA)
Description
本発明の好ましいコーティング組成物は1種類以上の樹脂を好適に含むことができる。この1種類以上の樹脂は、1種類以上の発色団基と、熱処理で組成物コーティング層の硬化を生じ得る1種類以上の部分とを好適に含むことができる。
本発明のコーティング組成物はさらなる任意の成分を含むことができる。したがって、例えば、コーティング組成物は添加された酸源、例えば、酸もしくは酸発生剤化合物、特には、熱酸発生剤化合物を好適に含むことができ、それにより適用されたコーティング組成物を、例えば熱処理により、オーバーコートされるフォトレジストの適用に先立って硬化させることができる。
本発明の液状コーティング組成物を作製するには、下地コーティング組成物の成分を好適な溶媒、例えば、1種類以上のオキシイソ酪酸エステル、特には、上述のようなメチル−2−ヒドロキシイソブチレート、乳酸エチルもしくは1種類以上のグリコールエーテル、例えば、2−メトキシエチルエーテル(ジグリム)、エチレングリコールモノメチルエーテル、およびプロピレングリコールモノメチルエーテル;エーテルおよびヒドロキシ部分の両者を有する溶媒、例えば、メトキシブタノール、エトキシブタノール、メトキシプロパノール、およびエトキシプロパノール;エーテル、例えば、メチルセロソルブアセテート、エチルセロソルブアセテート、プロピレングリコールモノメチルエーテルアセテート、ジプロピレングリコールモノメチルエーテルアセテート並びに他の溶媒、例えば、二塩基性エステル、炭酸プロピレンおよびガンマ−ブチロラクトンに溶解する。本発明の反射防止組成物に好ましい溶媒は、メチル−2−ヒドロキシイソブチレート(任意にアニソールと混合されていてもよい)である。溶媒中の乾燥成分の濃度は幾つかの要素、例えば、適用方法に依存する。一般には、反射防止組成物の固形分含有率はコーティング組成物の総重量の約0.5から20重量パーセントで変化し、好ましくは、固形分含有率はコーティング組成物の約2から10重量パーセントで変化する。
ポジ型およびネガ型フォト酸発生組成物をはじめとして、様々なフォトレジストを本発明のコーティング組成物と共に用いることができる。本発明の下地組成物と共に用いられるフォトレジストは、典型的には、樹脂結合剤および光活性成分、典型的には、フォト酸発生剤化合物を含む。好ましくは、フォトレジスト樹脂結合剤は、画像形成されたレジスト組成物にアルカリ性水溶液現像性を付与する官能基を有する。
1)248nmでの画像形成に特に適する化学増幅型ポジ型レジストをもたらし得る酸不安定性基を含有するフェノール樹脂。この種の特に好ましい樹脂には以下が含まれる。i)ビニルフェノールおよびアルキルアクリレートの重合単位を含み、重合したアルキルアクリレート単位がフォト酸の存在下で脱保護反応を受けることができるポリマー。フォト酸誘導脱保護反応を受けることができる例示的なアルキルアクリレートには、例えば、t−ブチルアクリレート、t−ブチルメタクリレート、メチルアダマンチルアクリレート、メチルアダマンチルメタクリレート、並びにフォト酸誘導反応を受けることができる他の非環状アルキルおよび脂環式アクリレート、例えば、米国特許第6,042,997号および第5,492,793号におけるポリマーが含まれる。ii)ビニルフェノール、ヒドロキシもしくはカルボキシ環置換基を含まない、任意に置換されていてもよいビニルフェニル(例えば、スチレン)、およびアルキルアクリレート、たとえば、上記ポリマーi)に関して記載される脱保護性基の重合単位を含むポリマー、例えば、米国特許第6,042,997号(これは参照により本願明細書に組み込まれる)に記載されるポリマー、並びにiii)フォト酸と反応するアセタールもしくはケタール部分を含む反復単位、および、任意に、芳香族反復単位、例えば、フェニルもしくはフェノール基を含有するポリマー、かかるポリマーは米国特許第5,929,176号および第6,090,526号に記載されている。
2)200nm未満の波長、例えば、193nmでの画像形成に特に好適なる化学増幅型ポジ型樹脂をもたらし得る、フェニルもしくは他の芳香族基を実質的に、もしくは完全に含まない樹脂。この種の特に好ましい樹脂には以下が含まれる。i)非芳香族環状オレフィン(環内二重結合)、例えば、任意に置換されていてもよいノルボルネンの重合単位を含むポリマー、例えば、米国特許第5,843,624号および第6,048,664に記載されるポリマー、ii)アルキルアクリレート単位、例えば、t−ブチルアクリレート、t−ブチルメタクリレート、メチルアダマンチルアクリレート、メチルアダマンチルメタクリレート、並びに他の非環状アルキルおよび脂環式アクリレートを含むポリマー、かかるポリマーは米国特許第6,057,083号、欧州公開出願EP01008913A1およびEP00930542A1、並びに米国係属特許出願第09/143,462号に記載されている、並びにiii)重合された無水物単位、特には、重合された無水マレイン酸および/もしくは無水イタコン酸単位を含むポリマー、例えば、欧州特許出願公開EP01008913A1および米国特許第6,048,662号に開示されるもの。
3)ヘテロ原子、特には、酸素および/もしくはイオウを含む反復単位(しかしながら、無水物以外、すなわち、この単位はケト環原子を含まない)を含有し、好ましくは、いかなる芳香族単位をも実質的に、もしくは完全に含まない樹脂。好ましくは、このヘテロ脂環式単位は樹脂主鎖に融合し、樹脂が融合炭素脂環式単位、例えば、ノルボルネン基の重合によってもたらされるものおよび/または無水物単位、例えば、無水マレイン酸もしくは無水イタコン酸の重合によってもたらされるものを含むことがさらに好ましい。かかる樹脂はPCT/US01/14914に開示されている。
4)フッ素置換を含む樹脂(フルオロポリマー)、例えば、テトラフルオロエチレン、フッ化芳香族基、例えば、フルオロ−スチレン化合物等の重合によってもたらされ得るもの。かかる樹脂の例は、例えば、PCT/US99/21912に開示される。
使用において、本発明のコーティング組成物は、様々な方法のうちのいずれかにより(例えば、スピンコーティングにより)コーティング層として基体に塗布される。このコーティング組成物は、一般には、基体上に約0.02から0.5μmの乾燥層厚、好ましくは、約0.04から0.20μmの乾燥層厚で適用される。基体は、好適には、フォトレジストを含む処理において用いられる任意の基体である。例えば、基体はケイ素、二酸化ケイ素もしくはアルミニウム−酸化アルミニウムマイクロエレクトロニクスウェハであり得る。ヒ化ガリウム、炭化ケイ素、セラミック、石英もしくは銅基体も用いることができる。液晶ディスプレイもしくは他のフラットパネルディスプレイ用途の基体、例えば、ガラス基体、酸化スズインジウムがコーティングされた基体等も好適に用いられる。光学および光学電子装置(例えば、導波路)のための基体も用いることができる。
実施例1〜10において用いられる無水物−ポリマー合成の一般的手順
反応装置は、磁気式攪拌棒を含み、かつ温度プローブ、滴下ロート、水冷凝縮器、シリンジポンプに装着されたシリンジに取り付けられた分配ライン、および窒素導入口(ブランケット)を備える、適切なサイズの三首丸底フラスコからなるものであった。温度はホットプレート/ステアプレートと縦列配置の油浴を用いて制御した。まず、モノマーおよび溶媒をフラスコに投入した。滴下ロートに開始剤溶液を添加した。モノマーおよび溶媒を含む供給溶液をシリンジに入れ、シリンジポンプに固定した。フラスコ内の混合物を約70℃まで加熱した後、開始剤溶液を添加した。次に、シリンジ内のモノマー溶液を連続速度で3〜3.5時間にわたって反応混合物に配送した。その添加が完了したとき、反応混合物の攪拌を70℃でさらに30分間継続した。その後、熱源を取り外すことによって反応を熱的に抑えて溶媒で希釈し、混合物を室温に冷却した。
Mw=18,817、Mn=5347
下記表1および2における実施例はポリマーおよびHBM溶媒のみを含む。他の添加物は用いなかった。実施例11〜15は表1に指示される1種類のポリマーのみを含む。実施例16〜22については、3種類の独自のポリマーを表2に指示される量で配合し、それらは以下の通りである。
配合された試料でスピンコートされたすべてのウェハ(ケイ素もしくは石英)について、回転時間は2000rpmで30秒であった。その後、ウェハをホットプレート上で60秒間、下記表に指示される温度でベークした。シリコンウェハ上の膜の厚みは偏光解析法(ナノ仕様)によって測定した。
溶媒耐性を試験する試料溶液の各々をシリコンウェハ上にスピンコートした。ウェハの厚みを偏光解析法(ナノ仕様)を用いて測定した。HBMをウェハの表面上に注ぎ、60秒間放置した。次に、そのウェハを4000rpmで60秒間回転乾燥させ、再度厚みを測定した。
下記表3における実施例22〜25は、典型的なレジスト溶媒および現像液に対する熱処理後のポリマー不溶性を示す。ポリ(スチレン−co−無水マレイン酸)、約1,600の典型的なMnで終止したクメンおよび約1,200の典型的なMnを有するポリ(スチレン−co−アリルアルコール)(両者ともAldrich Chemical Companyから購入)をプロピレングリコールモノメチルエーテルアセテートに同時溶解し、異なる量の各ポリマーを含有する数個の10重量パーセント溶液を形成した。これらの溶液を0.2μmフィルターを通して濾過し、各々、2枚1組の6インチウェハ上にDNSトラックを用いて3000rpmでスピンコートした。次に、コートしたウェハをホットプレートを用いて指示される温度に60秒間加熱し、架橋を誘起した。各々の組の一方のウェハを乳酸エチル(EL)溜まり(puddle)で60秒間覆った後、回転乾燥させた。第2のウェハは0.26N水酸化テトラメチルアンモニウム(TMAH)溶液の浴に60秒間浸漬した後、水ですすいで窒素ブロー乾燥した。ベークおよび溶媒もしくは現像液露出の後、Thermowave機器を用いて膜厚(FT)を測定した。
この実施例は、本発明の下地コーティング組成物の193nmレジストに対する下地/反射防止層としての使用を示す。
1)下地層:真空ホットプレート上、200℃/60秒で硬化させた、実施例26の215nmコーティング層、
2)フォトレジスト:真空ホットプレート上、120℃/60秒でソフトベークした、アクリレート系193nmフォトレジストの260nmコーティング層、
3)露光:適用したフォトレジスト層をパターン化された193nm放射線で露光した、
4)露光後ベーク:120℃/60秒、
5)現像:潜像を0.26N水性アルカリ現像液で現像してフォトレジストレリーフ画像を得た。
Claims (4)
- マイクロエレクトロニクス基体の処理方法であって:
反射防止コーティング組成物を基体に適用し、該コーティング組成物は無水物基を含む第一の樹脂、およびヒドロキシ基を含む第一の樹脂とは異なる第二の樹脂を含み、第一及び第二の樹脂はアクリレート樹脂であり;並びに
フォトレジスト組成物層を該反射防止組成物層上に適用する、
ことを含み、該反射防止組成物層が、アミン含有もしくはエポキシ架橋剤成分を含まない方法。 - フォトレジストコーティング層が、フォト酸不安定基を有する樹脂であって芳香族基を実質的に含まない1種類以上の樹脂を含む、請求項1に記載の方法。
- 前記の適用されたフォトレジストコーティング層を193nmの放射線で画像形成することをさらに含む、請求項1記載の方法。
- 前記の無水物及びヒドロキシ部分を含む1種以上の樹脂がフェニル基をさらに含む、請求項1記載の方法。
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- 2007-02-27 JP JP2007046770A patent/JP5451962B2/ja active Active
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Publication number | Publication date |
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JP2007233386A (ja) | 2007-09-13 |
JP2013167909A (ja) | 2013-08-29 |
KR20070089641A (ko) | 2007-08-31 |
EP1829942A1 (en) | 2007-09-05 |
US20160363862A1 (en) | 2016-12-15 |
US20070264580A1 (en) | 2007-11-15 |
US9429844B2 (en) | 2016-08-30 |
TWI427420B (zh) | 2014-02-21 |
KR101421079B1 (ko) | 2014-07-18 |
US10261418B2 (en) | 2019-04-16 |
CN101030037A (zh) | 2007-09-05 |
JP5655110B2 (ja) | 2015-01-14 |
TW200741352A (en) | 2007-11-01 |
EP1829942B1 (en) | 2012-09-26 |
KR20140005120A (ko) | 2014-01-14 |
KR101554970B1 (ko) | 2015-09-22 |
CN101030037B (zh) | 2013-12-11 |
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