WO2023033094A1 - 半導体製造用ウエハ端部保護膜形成組成物 - Google Patents
半導体製造用ウエハ端部保護膜形成組成物 Download PDFInfo
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- WO2023033094A1 WO2023033094A1 PCT/JP2022/032897 JP2022032897W WO2023033094A1 WO 2023033094 A1 WO2023033094 A1 WO 2023033094A1 JP 2022032897 W JP2022032897 W JP 2022032897W WO 2023033094 A1 WO2023033094 A1 WO 2023033094A1
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- IMFACGCPASFAPR-UHFFFAOYSA-N tributylamine Chemical compound CCCCN(CCCC)CCCC IMFACGCPASFAPR-UHFFFAOYSA-N 0.000 description 1
- FMYXZXAKZWIOHO-UHFFFAOYSA-N trichloro(2-phenylethyl)silane Chemical compound Cl[Si](Cl)(Cl)CCC1=CC=CC=C1 FMYXZXAKZWIOHO-UHFFFAOYSA-N 0.000 description 1
- GQIUQDDJKHLHTB-UHFFFAOYSA-N trichloro(ethenyl)silane Chemical compound Cl[Si](Cl)(Cl)C=C GQIUQDDJKHLHTB-UHFFFAOYSA-N 0.000 description 1
- ORVMIVQULIKXCP-UHFFFAOYSA-N trichloro(phenyl)silane Chemical compound Cl[Si](Cl)(Cl)C1=CC=CC=C1 ORVMIVQULIKXCP-UHFFFAOYSA-N 0.000 description 1
- HKFSBKQQYCMCKO-UHFFFAOYSA-N trichloro(prop-2-enyl)silane Chemical compound Cl[Si](Cl)(Cl)CC=C HKFSBKQQYCMCKO-UHFFFAOYSA-N 0.000 description 1
- VAXCNWCOODGCCT-UHFFFAOYSA-N trichloro-(2-ethoxynaphthalen-1-yl)silane Chemical compound C1=CC=CC2=C([Si](Cl)(Cl)Cl)C(OCC)=CC=C21 VAXCNWCOODGCCT-UHFFFAOYSA-N 0.000 description 1
- QDGORAVIRGNDBW-UHFFFAOYSA-N trichloro-(2-ethoxyphenyl)silane Chemical compound CCOC1=CC=CC=C1[Si](Cl)(Cl)Cl QDGORAVIRGNDBW-UHFFFAOYSA-N 0.000 description 1
- PUOCWUHEMWGXIQ-UHFFFAOYSA-N trichloro-(2-methoxy-2-phenylethyl)silane Chemical compound COC(C[Si](Cl)(Cl)Cl)C1=CC=CC=C1 PUOCWUHEMWGXIQ-UHFFFAOYSA-N 0.000 description 1
- WZLYTTRTHVZCNU-UHFFFAOYSA-N trichloro-(2-methoxynaphthalen-1-yl)silane Chemical compound C1=CC=CC2=C([Si](Cl)(Cl)Cl)C(OC)=CC=C21 WZLYTTRTHVZCNU-UHFFFAOYSA-N 0.000 description 1
- YTWFIHFZPSAMFV-UHFFFAOYSA-N trichloro-(2-methoxyphenyl)silane Chemical compound COC1=CC=CC=C1[Si](Cl)(Cl)Cl YTWFIHFZPSAMFV-UHFFFAOYSA-N 0.000 description 1
- BXYASSFFTRSIGT-UHFFFAOYSA-N trichloro-[(2-methylpropan-2-yl)oxy-phenylmethyl]silane Chemical compound CC(C)(C)OC([Si](Cl)(Cl)Cl)C1=CC=CC=C1 BXYASSFFTRSIGT-UHFFFAOYSA-N 0.000 description 1
- ZZARCDHCAFJWJC-UHFFFAOYSA-N trichloro-[ethoxy(phenyl)methyl]silane Chemical compound CCOC([Si](Cl)(Cl)Cl)C1=CC=CC=C1 ZZARCDHCAFJWJC-UHFFFAOYSA-N 0.000 description 1
- SMGOKIYLLQQVJE-UHFFFAOYSA-N trichloro-[methoxy(phenyl)methyl]silane Chemical compound COC([Si](Cl)(Cl)Cl)C1=CC=CC=C1 SMGOKIYLLQQVJE-UHFFFAOYSA-N 0.000 description 1
- VBSUMMHIJNZMRM-UHFFFAOYSA-N triethoxy(2-phenylethyl)silane Chemical compound CCO[Si](OCC)(OCC)CCC1=CC=CC=C1 VBSUMMHIJNZMRM-UHFFFAOYSA-N 0.000 description 1
- VQFQVYFUZUTIMU-UHFFFAOYSA-N triethoxy(7-oxabicyclo[4.1.0]heptan-4-ylmethyl)silane Chemical compound C1C(C[Si](OCC)(OCC)OCC)CCC2OC21 VQFQVYFUZUTIMU-UHFFFAOYSA-N 0.000 description 1
- DENFJSAFJTVPJR-UHFFFAOYSA-N triethoxy(ethyl)silane Chemical compound CCO[Si](CC)(OCC)OCC DENFJSAFJTVPJR-UHFFFAOYSA-N 0.000 description 1
- CPUDPFPXCZDNGI-UHFFFAOYSA-N triethoxy(methyl)silane Chemical compound CCO[Si](C)(OCC)OCC CPUDPFPXCZDNGI-UHFFFAOYSA-N 0.000 description 1
- UNKMHLWJZHLPPM-UHFFFAOYSA-N triethoxy(oxiran-2-ylmethoxymethyl)silane Chemical compound CCO[Si](OCC)(OCC)COCC1CO1 UNKMHLWJZHLPPM-UHFFFAOYSA-N 0.000 description 1
- JCVQKRGIASEUKR-UHFFFAOYSA-N triethoxy(phenyl)silane Chemical compound CCO[Si](OCC)(OCC)C1=CC=CC=C1 JCVQKRGIASEUKR-UHFFFAOYSA-N 0.000 description 1
- UMFJXASDGBJDEB-UHFFFAOYSA-N triethoxy(prop-2-enyl)silane Chemical compound CCO[Si](CC=C)(OCC)OCC UMFJXASDGBJDEB-UHFFFAOYSA-N 0.000 description 1
- OHKFEBYBHZXHMM-UHFFFAOYSA-N triethoxy-[1-(oxiran-2-ylmethoxy)butyl]silane Chemical compound CCO[Si](OCC)(OCC)C(CCC)OCC1CO1 OHKFEBYBHZXHMM-UHFFFAOYSA-N 0.000 description 1
- SJQPASOTJGFOMU-UHFFFAOYSA-N triethoxy-[1-(oxiran-2-ylmethoxy)ethyl]silane Chemical compound CCO[Si](OCC)(OCC)C(C)OCC1CO1 SJQPASOTJGFOMU-UHFFFAOYSA-N 0.000 description 1
- NFRRMEMOPXUROM-UHFFFAOYSA-N triethoxy-[1-(oxiran-2-ylmethoxy)propyl]silane Chemical compound CCO[Si](OCC)(OCC)C(CC)OCC1CO1 NFRRMEMOPXUROM-UHFFFAOYSA-N 0.000 description 1
- UDUKMRHNZZLJRB-UHFFFAOYSA-N triethoxy-[2-(7-oxabicyclo[4.1.0]heptan-4-yl)ethyl]silane Chemical compound C1C(CC[Si](OCC)(OCC)OCC)CCC2OC21 UDUKMRHNZZLJRB-UHFFFAOYSA-N 0.000 description 1
- FVMMYGUCXRZVPJ-UHFFFAOYSA-N triethoxy-[2-(oxiran-2-ylmethoxy)butyl]silane Chemical compound CCO[Si](OCC)(OCC)CC(CC)OCC1CO1 FVMMYGUCXRZVPJ-UHFFFAOYSA-N 0.000 description 1
- RWJUTPORTOUFDY-UHFFFAOYSA-N triethoxy-[2-(oxiran-2-ylmethoxy)ethyl]silane Chemical compound CCO[Si](OCC)(OCC)CCOCC1CO1 RWJUTPORTOUFDY-UHFFFAOYSA-N 0.000 description 1
- CFUDQABJYSJIQY-UHFFFAOYSA-N triethoxy-[2-(oxiran-2-ylmethoxy)propyl]silane Chemical compound CCO[Si](OCC)(OCC)CC(C)OCC1CO1 CFUDQABJYSJIQY-UHFFFAOYSA-N 0.000 description 1
- JXUKBNICSRJFAP-UHFFFAOYSA-N triethoxy-[3-(oxiran-2-ylmethoxy)propyl]silane Chemical compound CCO[Si](OCC)(OCC)CCCOCC1CO1 JXUKBNICSRJFAP-UHFFFAOYSA-N 0.000 description 1
- PSUKBUSXHYKMLU-UHFFFAOYSA-N triethoxy-[4-(7-oxabicyclo[4.1.0]heptan-4-yl)butyl]silane Chemical compound C1C(CCCC[Si](OCC)(OCC)OCC)CCC2OC21 PSUKBUSXHYKMLU-UHFFFAOYSA-N 0.000 description 1
- GSUGNQKJVLXBHC-UHFFFAOYSA-N triethoxy-[4-(oxiran-2-ylmethoxy)butyl]silane Chemical compound CCO[Si](OCC)(OCC)CCCCOCC1CO1 GSUGNQKJVLXBHC-UHFFFAOYSA-N 0.000 description 1
- QQQSFSZALRVCSZ-UHFFFAOYSA-N triethoxysilane Chemical compound CCO[SiH](OCC)OCC QQQSFSZALRVCSZ-UHFFFAOYSA-N 0.000 description 1
- GPHXJBZAVNFMKX-UHFFFAOYSA-M triethyl(phenyl)azanium;hydroxide Chemical compound [OH-].CC[N+](CC)(CC)C1=CC=CC=C1 GPHXJBZAVNFMKX-UHFFFAOYSA-M 0.000 description 1
- RKBCYCFRFCNLTO-UHFFFAOYSA-N triisopropylamine Chemical compound CC(C)N(C(C)C)C(C)C RKBCYCFRFCNLTO-UHFFFAOYSA-N 0.000 description 1
- UBMUZYGBAGFCDF-UHFFFAOYSA-N trimethoxy(2-phenylethyl)silane Chemical compound CO[Si](OC)(OC)CCC1=CC=CC=C1 UBMUZYGBAGFCDF-UHFFFAOYSA-N 0.000 description 1
- JLGNHOJUQFHYEZ-UHFFFAOYSA-N trimethoxy(3,3,3-trifluoropropyl)silane Chemical compound CO[Si](OC)(OC)CCC(F)(F)F JLGNHOJUQFHYEZ-UHFFFAOYSA-N 0.000 description 1
- HGCVEHIYVPDFMS-UHFFFAOYSA-N trimethoxy(7-oxabicyclo[4.1.0]heptan-4-ylmethyl)silane Chemical compound C1C(C[Si](OC)(OC)OC)CCC2OC21 HGCVEHIYVPDFMS-UHFFFAOYSA-N 0.000 description 1
- LFBULLRGNLZJAF-UHFFFAOYSA-N trimethoxy(oxiran-2-ylmethoxymethyl)silane Chemical compound CO[Si](OC)(OC)COCC1CO1 LFBULLRGNLZJAF-UHFFFAOYSA-N 0.000 description 1
- ZNOCGWVLWPVKAO-UHFFFAOYSA-N trimethoxy(phenyl)silane Chemical compound CO[Si](OC)(OC)C1=CC=CC=C1 ZNOCGWVLWPVKAO-UHFFFAOYSA-N 0.000 description 1
- LFRDHGNFBLIJIY-UHFFFAOYSA-N trimethoxy(prop-2-enyl)silane Chemical compound CO[Si](OC)(OC)CC=C LFRDHGNFBLIJIY-UHFFFAOYSA-N 0.000 description 1
- FFJVMNHOSKMOSA-UHFFFAOYSA-N trimethoxy-[1-(oxiran-2-ylmethoxy)butyl]silane Chemical compound CCCC([Si](OC)(OC)OC)OCC1CO1 FFJVMNHOSKMOSA-UHFFFAOYSA-N 0.000 description 1
- DAVVOFDYOGMLNQ-UHFFFAOYSA-N trimethoxy-[1-(oxiran-2-ylmethoxy)ethyl]silane Chemical compound CO[Si](OC)(OC)C(C)OCC1CO1 DAVVOFDYOGMLNQ-UHFFFAOYSA-N 0.000 description 1
- FNBIAJGPJUOAPB-UHFFFAOYSA-N trimethoxy-[1-(oxiran-2-ylmethoxy)propyl]silane Chemical compound CO[Si](OC)(OC)C(CC)OCC1CO1 FNBIAJGPJUOAPB-UHFFFAOYSA-N 0.000 description 1
- DQZNLOXENNXVAD-UHFFFAOYSA-N trimethoxy-[2-(7-oxabicyclo[4.1.0]heptan-4-yl)ethyl]silane Chemical compound C1C(CC[Si](OC)(OC)OC)CCC2OC21 DQZNLOXENNXVAD-UHFFFAOYSA-N 0.000 description 1
- HTVULPNMIHOVRU-UHFFFAOYSA-N trimethoxy-[2-(oxiran-2-ylmethoxy)propyl]silane Chemical compound CO[Si](OC)(OC)CC(C)OCC1CO1 HTVULPNMIHOVRU-UHFFFAOYSA-N 0.000 description 1
- DBUFXGVMAMMWSD-UHFFFAOYSA-N trimethoxy-[3-(7-oxabicyclo[4.1.0]heptan-4-yl)propyl]silane Chemical compound C1C(CCC[Si](OC)(OC)OC)CCC2OC21 DBUFXGVMAMMWSD-UHFFFAOYSA-N 0.000 description 1
- ZQPNGHDNBNMPON-UHFFFAOYSA-N trimethoxy-[3-(oxiran-2-ylmethoxy)butyl]silane Chemical compound CO[Si](OC)(OC)CCC(C)OCC1CO1 ZQPNGHDNBNMPON-UHFFFAOYSA-N 0.000 description 1
- BPSIOYPQMFLKFR-UHFFFAOYSA-N trimethoxy-[3-(oxiran-2-ylmethoxy)propyl]silane Chemical compound CO[Si](OC)(OC)CCCOCC1CO1 BPSIOYPQMFLKFR-UHFFFAOYSA-N 0.000 description 1
- ZOWVSEMGATXETK-UHFFFAOYSA-N trimethoxy-[4-(7-oxabicyclo[4.1.0]heptan-4-yl)butyl]silane Chemical compound C1C(CCCC[Si](OC)(OC)OC)CCC2OC21 ZOWVSEMGATXETK-UHFFFAOYSA-N 0.000 description 1
- GUKYSRVOOIKHHB-UHFFFAOYSA-N trimethoxy-[4-(oxiran-2-ylmethoxy)butyl]silane Chemical compound CO[Si](OC)(OC)CCCCOCC1CO1 GUKYSRVOOIKHHB-UHFFFAOYSA-N 0.000 description 1
- HADKRTWCOYPCPH-UHFFFAOYSA-M trimethylphenylammonium hydroxide Chemical compound [OH-].C[N+](C)(C)C1=CC=CC=C1 HADKRTWCOYPCPH-UHFFFAOYSA-M 0.000 description 1
- FAYMLNNRGCYLSR-UHFFFAOYSA-M triphenylsulfonium triflate Chemical compound [O-]S(=O)(=O)C(F)(F)F.C1=CC=CC=C1[S+](C=1C=CC=CC=1)C1=CC=CC=C1 FAYMLNNRGCYLSR-UHFFFAOYSA-M 0.000 description 1
- YFTHZRPMJXBUME-UHFFFAOYSA-N tripropylamine Chemical compound CCCN(CCC)CCC YFTHZRPMJXBUME-UHFFFAOYSA-N 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
- 229910021642 ultra pure water Inorganic materials 0.000 description 1
- 239000012498 ultrapure water Substances 0.000 description 1
- 238000001771 vacuum deposition Methods 0.000 description 1
- 239000005050 vinyl trichlorosilane Substances 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Classifications
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- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
- H01L21/31—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to form insulating layers thereon, e.g. for masking or by using photolithographic techniques; After treatment of these layers; Selection of materials for these layers
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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
- G03F7/004—Photosensitive materials
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- G03F7/004—Photosensitive materials
- G03F7/0042—Photosensitive materials with inorganic or organometallic light-sensitive compounds not otherwise provided for, e.g. inorganic resists
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- G03F7/16—Coating processes; Apparatus therefor
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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
- G03F7/16—Coating processes; Apparatus therefor
- G03F7/162—Coating on a rotating support, e.g. using a whirler or a spinner
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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
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- G03F7/168—Finishing the coated layer, e.g. drying, baking, soaking
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- G03F7/20—Exposure; Apparatus therefor
- G03F7/2022—Multi-step exposure, e.g. hybrid; backside exposure; blanket exposure, e.g. for image reversal; edge exposure, e.g. for edge bead removal; corrective exposure
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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
- G03F7/26—Processing photosensitive materials; Apparatus therefor
- G03F7/38—Treatment before imagewise removal, e.g. prebaking
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- G03F7/26—Processing photosensitive materials; Apparatus therefor
- G03F7/40—Treatment after imagewise removal, e.g. baking
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- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
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- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/02104—Forming layers
- H01L21/02107—Forming insulating materials on a substrate
- H01L21/02109—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates
- H01L21/02112—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates characterised by the material of the layer
- H01L21/02118—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates characterised by the material of the layer carbon based polymeric organic or inorganic material, e.g. polyimides, poly cyclobutene or PVC
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- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
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- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/02104—Forming layers
- H01L21/02107—Forming insulating materials on a substrate
- H01L21/02225—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer
- H01L21/0226—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer formation by a deposition process
- H01L21/02282—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer formation by a deposition process liquid deposition, e.g. spin-coating, sol-gel techniques, spray coating
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- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
- H01L21/302—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to change their surface-physical characteristics or shape, e.g. etching, polishing, cutting
- H01L21/304—Mechanical treatment, e.g. grinding, polishing, cutting
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- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
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- 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
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
- H01L21/31—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to form insulating layers thereon, e.g. for masking or by using photolithographic techniques; After treatment of these layers; Selection of materials for these layers
- H01L21/3105—After-treatment
- H01L21/31058—After-treatment of organic layers
-
- 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
- G03F7/004—Photosensitive materials
- G03F7/0042—Photosensitive materials with inorganic or organometallic light-sensitive compounds not otherwise provided for, e.g. inorganic resists
-
- 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
- G03F7/004—Photosensitive materials
- G03F7/038—Macromolecular compounds which are rendered insoluble or differentially wettable
- G03F7/0388—Macromolecular compounds which are rendered insoluble or differentially wettable with ethylenic or acetylenic bands in the side chains of the photopolymer
-
- 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
- G03F7/004—Photosensitive materials
- G03F7/075—Silicon-containing compounds
- G03F7/0757—Macromolecular compounds containing Si-O, Si-C or Si-N bonds
Definitions
- the present invention provides a protective film for a semiconductor manufacturing substrate (wafer) end surface, a protective film forming composition for forming the protective film, a semiconductor manufacturing wafer manufactured using the protective film, and the The present invention relates to a semiconductor manufacturing wafer and a manufacturing method of a semiconductor device.
- the manufacturing process becomes more complicated, a method of coating a wafer with a chemical solution containing metal is being studied for the purpose of, for example, improving the etching selectivity.
- the resist film is formed using a resist containing an inorganic metal because the resolution of the resist pattern is increased when exposure is performed using extreme ultraviolet (EUV) and it has high etching resistance. is being considered.
- EUV extreme ultraviolet
- the chemical solution supplied to the front surface of the wafer wraps around the peripheral edge portions of the peripheral edge surface and the back surface of the wafer, resulting in unintended peripheral edge portions of the peripheral edge surface and the back surface.
- metal contamination of these parts may occur because the coating film is formed up to the upper part.
- a wafer processing device such as an exposure device or an etching device or a wafer transfer mechanism
- the wafer is subsequently transferred and processed through these processing devices and transfer mechanisms.
- the wafer may also be contaminated with metals, that is, cross-contamination may occur.
- Patent Document 1 When forming a coating film on the surface of a substrate, a technique has been disclosed in which the coating film can be formed so that the peripheral end face and the back side peripheral edge portion of the substrate do not come into contact with the coating film (Patent Document 1).
- Patent Document 2 A method for manufacturing a semiconductor device in which peeling of a film from a bevel portion of a substrate is suppressed is disclosed.
- the problem to be solved by the present invention is to provide a protective film capable of completely covering the edges of a semiconductor manufacturing substrate (wafer) by a simple coating method in the manufacture of semiconductor devices, and a method for forming the protective film. It is an object of the present invention to provide a composition for forming a protective film, a semiconductor manufacturing wafer manufactured using the protective film, the semiconductor manufacturing wafer, and a method for manufacturing a semiconductor device.
- the present invention includes the following.
- a composition for forming a wafer edge protective film for semiconductor manufacturing comprising a polymer or compound having a crosslinkable group and a solvent.
- the protective film-forming composition according to [1] or [2] which has a viscosity of 100 cps or less at 25°C.
- [4] The protective film-forming composition according to any one of [1] to [3], which is photosensitive.
- [5] [1] to [4] A protective film which is a cured product of a coating film comprising the protective film-forming composition according to any one of [1] to [4].
- [6] The protective film according to [5], having a thickness of 1 nm to 10 ⁇ m.
- [8] The protective film according to any one of [5] to [7], which is cured with light having a wavelength of 170 to 800 nm.
- a semiconductor manufacturing wafer with a protected edge of the wafer which is formed by applying the protective film-forming composition according to any one of [1] to [4] to the edge of the wafer precursor. manufacturing wafers. [10] (A) forming a resist film on a semiconductor substrate; (B) forming a resist pattern by irradiating the resist film with light or an electron beam and then developing; (C) a step of etching the semiconductor substrate; In a method of manufacturing a semiconductor device comprising on the front edge and optionally the bevel and/or the back edge of a semiconductor fabrication wafer, Step (X) of forming a protective film from the protective film-forming composition according to any one of [1] to [4] including, A method of manufacturing a semiconductor device.
- [16] The method of manufacturing a semiconductor device according to [14], including a step (Z) of removing the protective film after the step (Y).
- [17] The method of manufacturing a semiconductor device according to any one of [10] to [16], wherein the resist film contains metal.
- [18] Manufacture of the semiconductor device according to any one of [10] to [17], wherein in the step (X), the protective film-forming composition according to [4] is applied, and a predetermined region is exposed and developed. Method.
- step (Z) is performed by ashing or treatment with hydrofluoric acid, an organic solvent, an alkaline developer, or a semiconductor cleaning solution.
- a method for manufacturing a wafer for semiconductor manufacturing A step of applying the protective film-forming composition according to any one of [1] to [4] to the edge of a wafer precursor to manufacture a wafer with the edge protected;
- a method of manufacturing a wafer for semiconductor manufacturing comprising:
- a protective film that can completely cover the edge of a semiconductor manufacturing substrate (wafer) by a simple coating method prevents cross-contamination due to metal contamination in subsequent semiconductor device manufacturing processes. Therefore, the yield of non-defective semiconductor manufacturing equipment can be improved.
- a method for manufacturing a semiconductor device includes: (A) forming a resist film on a semiconductor substrate; (B) forming a resist pattern by irradiating the resist film with light or an electron beam and then developing; (C) processing the semiconductor substrate by etching, or processing the semiconductor substrate by etching through the patterned resist;
- Step (X) of forming a protective film from a composition for forming a wafer edge protective film for semiconductor manufacturing, which contains a polymer or compound having a crosslinkable group and a solvent including, A method for manufacturing a semiconductor device.
- a resist film is formed on a semiconductor substrate.
- Semiconductor substrates are wafers used for the manufacture of semiconductor devices and the like, and include commonly used silicon wafers, germanium wafers, gallium arsenide, indium phosphide, gallium nitride, indium nitride, and aluminum nitride.
- a compound semiconductor wafer formed by combining two or more kinds of elements such as They are usually disc-shaped and have sizes of, for example, 4, 6, 8, 12 inches, and the like. Commercial products may be used.
- the inorganic film is formed by, for example, an ALD (atomic layer deposition) method, a CVD (chemical vapor deposition) method, a reactive sputtering method, an ion plating method, or a vacuum deposition method. It is formed by a spin coating method (spin on glass: SOG).
- the inorganic film examples include a polysilicon film, a silicon oxide film, a silicon nitride film, a BPSG (Boro-Phospho Silicate Glass) film, a titanium nitride film, a titanium oxynitride film, a tungsten film, a gallium nitride film, and a gallium arsenide film. is mentioned.
- a resist underlayer film, a resist film, etc., having a predetermined thickness are formed on such a semiconductor substrate by an appropriate coating method such as a spray, spinner, or coater.
- an appropriate coating method such as a spray, spinner, or coater.
- each of the resist underlayer film-forming composition, the resist film-forming composition, and the like is supplied through a nozzle or the like from above the central portion of the rotating disk-shaped substrate.
- These films are typically baked using a heating means such as a hot plate.
- the photoresist used for forming the resist film is not particularly limited as long as it is sensitive to the light used for exposure. Both negative and positive photoresists can be used.
- positive photoresist composed of novolac resin and 1,2-naphthoquinonediazide sulfonic acid ester;
- a chemically amplified photoresist comprising a low-molecular compound that decomposes to increase the alkali dissolution rate of the photoresist, an alkali-soluble binder, and a photoacid generator, and a binder having a group that decomposes with an acid to increase the alkali dissolution rate.
- photoresists composed of low-molecular-weight compounds and photoacid generators that are decomposed by acid to increase the rate of alkali dissolution of photoresists, and resists containing metal elements.
- Examples include V146G (trade name) manufactured by JSR Corporation, APEX-E (trade name) manufactured by Shipley, PAR710 (trade name) manufactured by Sumitomo Chemical Co., Ltd., AR2772 (trade name) and SEPR430 (trade name) manufactured by Shin-Etsu Chemical Co., Ltd., and the like.
- Proc. SPIE Vol. 3999, 330-334 (2000)
- Proc. SPIE Vol. 3999, 357-364 (2000)
- Proc. SPIE Vol. 3999, 365-374 (2000).
- a negative photoresist is preferred.
- the resist film-forming composition used for forming the resist film can contain one or more metals.
- the form of the metal include simple metals, metal salts, metal complexes, and other metal-containing compounds.
- Metal species are not particularly limited, but examples include tin, indium, antimony, bismuth, gallium, germanium, aluminum, zirconium, hafnium, cerium, lanthanum, and cesium.
- Baking conditions for the resist film are appropriately selected from a baking temperature of 70° C. to 400° C. and a baking time of 0.3 minutes to 60 minutes.
- the baking temperature is 80° C. to 350° C.
- the baking time is 0.5 minutes to 30 minutes
- the baking temperature is 90° C. to 300° C.
- the baking time is 0.8 minute to 10 minutes.
- the lower limit of the average thickness of the resist film is preferably 1 nm, more preferably 3 nm, 5 nm and 10 nm.
- the upper limit of the average thickness of the resist film is 5,000 nm, 3,000 nm, 2,000 nm, preferably 1,000 nm, more preferably 200 nm, and more preferably 50 nm.
- Step (X) of forming a protective film The step (X) of forming a protective film from the protective film-forming composition on the front edge and, optionally, the bevel and/or the back edge of the semiconductor manufacturing wafer is performed at any time. In step (X), preferably, a protective film-forming composition is applied, and a predetermined region is exposed and developed. Step (X) may be performed before step (A), between step (A) and step (B), or after step (B) or step (C). good.
- the surface of the substrate on which the device portion such as the resist film is provided is called the front surface, and the opposite surface is called the back surface.
- the front surface edge refers to a region generally having a width of 1 to 10 mm from the edge of the device portion provided on the substrate to the bevel portion, and the bevel portion connects the front surface edge and the back surface edge.
- the bent area is defined as the edge of the rear surface, and the edge of the rear surface of the substrate is the area corresponding to the edge of the front surface of the rear surface of the substrate.
- a protective film-forming composition (to be described later) is applied to a semiconductor substrate on which a resist film or the like has been formed.
- the method of applying the protective film-forming composition is not particularly limited, but known means such as a spin coating method and a spray method can be employed.
- the protective film-forming composition is applied from above or near the edge of the surface of the rotating disk-shaped substrate while rotating the semiconductor substrate on which a resist film or the like is formed at a predetermined rotation speed. Feed through a nozzle.
- the beveled portion and/or the backside edge of the substrate are also fed through the nozzle from the vicinity of each.
- the spin coating conditions can be selected as appropriate and are not limited at all, but typical conditions are as follows.
- ⁇ Viscosity of protective film-forming composition about 100 cps or less
- ⁇ Wafer rotation speed ..
- Exposure is applied to the protective film-forming composition through a mask or through a mask with actinic rays such as ultraviolet rays, visible rays, and radiation (i-line, KrF excimer laser, ArF excimer laser, EUV (extreme ultraviolet), EB (including electron beam)).
- actinic rays such as ultraviolet rays, visible rays, and radiation
- soft baking SB
- post-exposure baking PEB
- the post-exposure heating temperature is preferably 50° C. to 150° C.
- the post-exposure heating time is preferably 1 to 10 minutes.
- the exposed protective film-forming composition is developed.
- Development can be carried out by removing the exposed portion of the protective film-forming composition after exposure with a developer, and the development temperature is appropriately selected from 5° C. to 50° C. and the development time is selected from 10 seconds to 300 seconds.
- organic solvents contained in the developer include alcohol solvents, ether solvents, ketone solvents, amide solvents, ester solvents, hydrocarbon solvents, and the like.
- organic solvent for the developer those containing an ester solvent, a ketone solvent, or a combination thereof are preferable.
- the developer may contain one type of organic solvent alone, or may contain two or more types.
- alcohol solvents examples include aliphatic monoalcohol solvents having 1 to 18 carbon atoms such as 4-methyl-2-pentanol and n-hexanol; alicyclic monoalcohols having 3 to 18 carbon atoms such as cyclohexanol. system solvent; polyhydric alcohol partial ether system solvent having 3 to 19 carbon atoms such as propylene glycol monomethyl ether.
- ether solvents include dialkyl ether solvents such as diethyl ether, dipropyl ether, dibutyl ether, dipentyl ether, diisoamyl ether, dihexyl ether, and diheptyl ether; cyclic ether solvents such as tetrahydrofuran and tetrahydropyran; and diphenyl ether. and aromatic ring-containing ether solvents such as anisole.
- dialkyl ether solvents such as diethyl ether, dipropyl ether, dibutyl ether, dipentyl ether, diisoamyl ether, dihexyl ether, and diheptyl ether
- cyclic ether solvents such as tetrahydrofuran and tetrahydropyran
- diphenyl ether diphenyl ether.
- aromatic ring-containing ether solvents such as anisole.
- Ketone solvents include, for example, acetone, methyl ethyl ketone, methyl-n-propyl ketone, methyl-n-butyl ketone, diethyl ketone, methyl-iso-butyl ketone, 2-heptanone, ethyl-n-butyl ketone, methyl-n-hexyl ketone.
- di-iso-butyl ketone trimethylnonanone and other chain ketone solvents
- cyclopentanone cyclohexanone, cycloheptanone, cyclooctanone, methylcyclohexanone and other cyclic ketone solvents
- 2,4-pentanedione acetonyl Acetone, acetophenone, and the like.
- amide solvents include cyclic amide solvents such as N,N'-dimethylimidazolidinone and N-methylpyrrolidone; N-methylformamide, N,N-dimethylformamide, N,N-diethylformamide, acetamide, Chain amide solvents such as N-methylacetamide, N,N-dimethylacetamide, N-methylpropionamide and the like are included.
- ester solvents include monocarboxylic acid ester solvents such as n-butyl acetate and ethyl lactate; polyhydric alcohol carboxylate solvents such as propylene glycol acetate; polyhydric alcohol partial ether carboxylates such as propylene glycol monomethyl ether acetate; rate-based solvents; polyvalent carboxylic acid diester-based solvents such as diethyl oxalate; and carbonate-based solvents such as dimethyl carbonate and diethyl carbonate.
- monocarboxylic acid ester solvents such as n-butyl acetate and ethyl lactate
- polyhydric alcohol carboxylate solvents such as propylene glycol acetate
- polyhydric alcohol partial ether carboxylates such as propylene glycol monomethyl ether acetate
- rate-based solvents polyvalent carboxylic acid diester-based solvents
- carbonate-based solvents such as dimethyl carbonate and diethyl carbonate.
- hydrocarbon solvents examples include aliphatic hydrocarbon solvents having 5 to 12 carbon atoms such as n-pentane and n-hexane; aromatic hydrocarbon solvents having 6 to 16 carbon atoms such as toluene and xylene. mentioned.
- ester-based solvents propylene glycol monomethyl ether acetate is preferred. Cyclohexanone is preferred as the ketone solvent. Propylene glycol monomethyl ether is preferable as the ether solvent.
- the lower limit of the content of the organic solvent in the developer is preferably 80% by mass, more preferably 90% by mass, even more preferably 99% by mass, and particularly preferably 100% by mass.
- the developer may contain a nitrogen-containing compound.
- the developer contains a nitrogen-containing compound, it is possible to further reduce film loss in the formed resist pattern.
- an aqueous developer may be used instead of the organic solvent-based developer described above.
- alkaline aqueous solutions such as sodium hydroxide, potassium hydroxide, sodium silicate, ammonia, monoethylamine, diethylamine, triethylamine, triethanolamine, and tetramethylammonium hydroxide may be used.
- the base concentration of these aqueous solutions is not particularly limited, but can be, for example, 0.1 to 10% by weight.
- alcohols and surfactants can be added to the above developing solution and used. Each of these can be blended in the range of preferably 0.01 to 10 parts by weight, more preferably 0.1 to 5 parts by weight, per 100 parts by weight of the developer.
- surfactants include ionic and nonionic fluorine-based surfactants, silicon-based surfactants, and the like.
- Examples of the development method include a method in which the substrate is immersed in a tank filled with a developer for a certain period of time (dip method), and a method in which the developer is piled up on the surface of the substrate by surface tension and left stationary for a certain period of time (paddle method). ), a method in which the developer is sprayed onto the surface of the substrate (spray method), and a method in which the developer dispensing nozzle scans the substrate rotating at a constant speed and continuously dispenses the developer (dynamic dispensing method). etc.
- the heating temperature in the heat treatment is usually 150°C or higher and 350°C or lower, preferably 200 to 300°C.
- the heat treatment time is the time required for the protective film-forming composition to harden, and in consideration of productivity, it is preferably less than approximately 30 minutes.
- the lower limits of the average thickness of the protective film are, for example, 1 nm, 3 nm, 5 nm, 10 nm, 30 nm, 50 nm, 80 nm, 100 nm, 150 nm and 200 nm.
- the upper limits of the average thickness of the protective film are, for example, 10 ⁇ m, 8 ⁇ m, 5 ⁇ m, 3 ⁇ m, 1 ⁇ m, 800 nm, 500 nm, and 300 nm.
- the resist film on the protective film can be removed with a remover.
- a remover Similar to the step (X), it is preferable to apply the remover to the front surface edge of the semiconductor manufacturing wafer and, optionally, the bevel portion and/or the back surface edge.
- the resist remover includes, for example, propylene glycol monomethyl ether, propylene glycol monomethyl ether acetate, cyclohexanone, water, butyl acetate, tetramethylammonium aqueous solution, or mixtures thereof.
- propylene glycol monomethyl ether acetate and water are preferable from the viewpoint of removability of the resist film.
- the protective film can be removed by ashing or treatment with hydrofluoric acid, an organic solvent, an alkaline developer, or a cleaning solution for semiconductors. After that, it is preferable to wash with an arbitrary solvent or a commonly used semiconductor cleaning liquid.
- Steps (X), (Y), and (Z) can be performed simultaneously with steps (A), (B), and (C), or at any time before or after each step.
- step (X) when step (X) is included before step (A), step (Y) of removing the resist film above the protective film may be performed between step (A) and step (B). can be performed, and the step (Z) of removing the protective film can be performed between the step (Y) and the step (B).
- step (X) is included between step (A) and step (B) or step (C)
- protection A step (Z) of removing the film can also be performed.
- Step of forming a resist pattern by irradiating a resist film with light or an electron beam and subsequent development, and (C) Step of processing a semiconductor substrate by etching The resist film is exposed through a mask (reticle) for forming a predetermined pattern, for example, i-ray, KrF excimer laser, ArF excimer laser, EUV (extreme ultraviolet) or EB (electron beam) is used. .
- a mask for forming a predetermined pattern
- i-ray, KrF excimer laser, ArF excimer laser, EUV (extreme ultraviolet) or EB (electron beam) is used.
- soft baking SB
- post-exposure baking PEB
- the post-exposure heating temperature is preferably 50° C. to 150° C.
- the post-exposure heating time is preferably 1 to 10 minutes.
- An alkaline developer is used for development, and the development temperature is appropriately selected from 5°C to 50°C and the development time is 10 seconds to 300 seconds.
- the alkaline developer include inorganic alkalis such as sodium hydroxide, potassium hydroxide, sodium carbonate, sodium silicate, sodium metasilicate, aqueous ammonia, primary amines such as ethylamine and n-propylamine, diethylamine, secondary amines such as di-n-butylamine; tertiary amines such as triethylamine and methyldiethylamine; alcohol amines such as dimethylethanolamine and triethanolamine; Aqueous solutions of alkalis such as quaternary ammonium salts, pyrrole, cyclic amines such as piperidine, and the like can be used.
- the base concentration of these aqueous solutions is not particularly limited, but can be, for example, 0.1 to 10% by weight.
- alcohols such as isopropyl alcohol and surfactants such as nonionic surfactants can be added in appropriate amounts to the aqueous solution of alkalis.
- surfactants such as nonionic surfactants
- Each of these can be blended in the range of preferably 0.01 to 10 parts by weight, more preferably 0.1 to 5 parts by weight, per 100 parts by weight of the developer.
- Preferred developers among these are quaternary ammonium salts, more preferably tetramethylammonium hydroxide and choline.
- a surfactant or the like can be added to these developers.
- Parts where the alkali dissolution rate of the photoresist is not improved by developing with a polyhydric alcohol solvent having 2 to 18 carbon atoms such as 1,2-propylene glycol or an organic solvent such as butyl acetate instead of the alkaline developer. can also be used.
- the semiconductor substrate is baked.
- the baking means is not particularly limited, for example, a proximity baking furnace in which a plurality of substrate support pins are used to secure a gap between the substrate and the hot plate is preferably used.
- the baking temperature is usually 40° C. to 300° C., preferably 200° C. to 300° C. for 1 to 30 minutes, but may be set to 90° C. or less if it is necessary to avoid damage to the resist pattern.
- Baking may be performed on the semiconductor substrate after exposure and before development.
- the means and conditions for baking are as described above, but if it is necessary to avoid damage to the resist pattern, the temperature may be set to 90° C. or less.
- the resist underlayer film is etched, preferably dry etched, to form a patterned resist.
- the semiconductor substrate is processed by a method known per se (dry etching method, etc.) using the patterned resist.
- the etching for processing the semiconductor substrate may be a known method.
- the shape processing step is performed by dry etching using a fluorine-based gas such as carbon tetrafluoride.
- it includes a surface treatment step such as removing a silicon nitride film present on the surface of the semiconductor substrate with hot phosphoric acid.
- a semiconductor device can be manufactured through the above processes.
- the method for producing a wafer for semiconductor production according to the present invention is the method for producing a semiconductor device as described above, wherein a composition for forming a wafer edge protection film for semiconductor production containing a polymer or compound having a crosslinkable group and a solvent is used. , applying (or coating) to the front edge and, optionally, the bevel and/or back edge of the semiconductor fabrication wafer precursor to produce a protected semiconductor fabrication wafer.
- a semiconductor manufacturing wafer precursor refers to a product obtained by subjecting a semiconductor substrate to at least one step of a semiconductor device manufacturing method.
- the step of forming an inorganic film, a resist underlayer film, a resist film, etc. on a semiconductor substrate is performed, and the resist film is irradiated with light or an electron beam, and then Examples include materials before being subjected to the step of forming a resist pattern by development of a.
- a polymer or compound having a crosslinkable group and a solvent are added to the front surface edge and optionally the bevel portion and/or the back surface edge of a semiconductor manufacturing wafer precursor obtained through one or more steps of a semiconductor device manufacturing process.
- a composition for forming a wafer edge protection film for semiconductor manufacturing containing the composition is applied by spin coating.
- the semiconductor substrate may then be baked.
- the baking means is not particularly limited, but for example, a proximity baking furnace that secures a gap between the substrate and the hot plate using a plurality of substrate support pins is preferably used.
- the baking temperature is usually 40-300° C., preferably 200-300° C., for 1-30 minutes.
- the end surface of the protective film may be subjected to known treatments in the semiconductor manufacturing process, such as edge bead removal and back rinsing.
- the wafer for semiconductor manufacturing of the present invention is a wafer for semiconductor manufacturing in which the edge of the wafer is protected, and is formed by coating the edge of the wafer with the protective film-forming composition containing a polymer having a crosslinkable group and a solvent. It is a wafer for semiconductor manufacturing.
- the protective film-forming composition of the present invention is a protective film-forming composition used to protect the edge of the surface of a semiconductor manufacturing wafer, and comprises a polymer or compound having a crosslinkable group and a solvent. is.
- a crosslinkable group means a group capable of forming a crosslinked structure by the action of light, electron beams, other electromagnetic waves, radicals, acids, heat, water, oxygen, and the like. Examples include, but are not limited to, epoxy groups, acryl groups, vinyl groups, carboxylic acid groups, thiol groups, silanol groups, cinnamoyl groups, hydroxyl groups (including phenolic hydroxyl groups), and the like.
- polymer or compound having a crosslinkable group examples include, but are not limited to, the following. ⁇ epoxy (meth)acrylate, cinnamic acid grafted epoxy novolak, phenoplasts, thermosetting materials obtained by polycondensation of phenols and aldehydes with removal of water and formation of a three-dimensional network; - For example, melamine resins such as trimethylol melamine and hexamethylol melamine, urea resins such as dimethylol propylene urea, dimethylol ethylene urea, and dimethylol hydroxyl urea, aminoblast resins such as dimethylol urone resin, (blocked) isocyanates, ⁇ vinyl ether, ⁇ Polysiloxane resins and epoxy resins with (meth)acrylic groups.
- melamine resins such as trimethylol melamine and hexamethylol melamine
- urea resins such as di
- solvents contained in the protective film-forming composition of the present invention include water, ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, methyl cellosolve acetate, ethyl cellosolve acetate, diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, propylene glycol, Propylene Glycol Monomethyl Ether, Propylene Glycol Monoethyl Ether, Propylene Glycol Monomethyl Ether Acetate, Propylene Glycol Propyl Ether Acetate, Toluene, Xylene, Methyl Ethyl Ketone, Methyl Isobutyl Ketone, Cyclopentanone, Cyclohexanone, Cycloheptanone, 4-Methyl-2-Pene Tanol, methyl 2-hydroxyisobutyrate, ethyl 2-hydroxyisobutyrate, ethyl ethoxyacetate, 2-hydroxyethyl a
- the solvent should be added so that the protective film-forming composition of the present invention has an appropriate viscosity. In general, it is preferably about 100 to 3,000 parts by mass with respect to 100 parts by mass of the polymer or compound having a crosslinkable group.
- the protective film-forming composition of the present invention may optionally contain a radical polymerization initiator (such as a photopolymerization initiator), an acid (catalyst), a thermal acid generator, a photoacid generator, a base (catalyst), Thermal base generator, photobase generator, antioxidant, polymerization inhibitor, cross-linking agent (polyfunctional acrylic, etc.), adhesion improver, adhesion aid (silane coupling agent), surfactant, defoaming agent, Rheology modifiers, pigments, dyes, storage stabilizers, dissolution accelerators such as polyhydric phenols and polyhydric carboxylic acids, sensitizers, and the like can be included.
- Any radical polymerization initiator may be used as long as it can release a substance that initiates radical polymerization upon exposure to light and/or heat.
- photoradical polymerization initiators include benzophenone derivatives, imidazole derivatives, bisimidazole derivatives, N-arylglycine derivatives, organic azide compounds, titanocene compounds, aluminate complexes, organic peroxides, N-alkoxypyridinium salts, thioxanthone derivatives. etc.
- benzophenone 1,3-di(tert-butyldioxycarbonyl)benzophenone, 3,3′,4,4′-tetrakis(tert-butyldioxycarbonyl)benzophenone, 3-phenyl-5- isoxazolone, 2-mercaptobenzimidazole, bis(2,4,5-triphenyl)imidazole, 2,2-dimethoxy-1,2-diphenylethan-1-one, 1-hydroxycyclohexylphenyl ketone, 2-benzyl- 2-dimethylamino-1-(4-morpholinophenyl)-butan-1-one, bis( ⁇ 5 -2,4-cyclopentadien-1-yl)-bis(2,6-difluoro-3-(1H -pyrrol-1-yl)-phenyl)titanium) and the like, but are not limited thereto.
- photoradical polymerization initiator examples include IRGACURE (registered trademark) 651, 184, 369, 784 manufactured by BASF.
- commercial products other than the above can also be used.
- thermal radical polymerization initiators include acetyl peroxide, benzoyl peroxide, methyl ethyl ketone peroxide, cyclohexanone peroxide, hydrogen peroxide, tert-butyl hydroperoxide, cumene hydroperoxide, di-tert-butyl peroxide, dicumyl peroxide, and dilauroyl.
- Peroxides peroxides such as tert-butylperoxyacetate, tert-butylperoxypivalate, tert-butylperoxy-2-ethylhexanoate; 2,2′-azobisisobutyronitrile, 2,2′- Azobis(2,4-dimethylvaleronitrile), (1-phenylethyl)azodiphenylmethane, 2,2'-azobis(4-methoxy-2,4-dimethylvaleronitrile), dimethyl-2,2'-azobisiso butyrate, 2,2′-azobis(2-methylbutyronitrile), 1,1′-azobis(1-cyclohexanecarbonitrile), 2-(carbamoylazo)isobutyronitrile, 2,2′-azobis ( 2,4,4-trimethylpentane), 2-phenylazo-2,4-dimethyl-4-methoxyvaleronitrile, 2,2′-azobis(2-methylpropane)
- thermal radical polymerization initiators examples include NOF Corporation Perloyl (registered trademark) IB, NPP, IPP, SBP, TCP, OPP, SA, 355, L, Perbutyl (registered trademark) ND, NHP, MA, PV, 355, A, C, D, E, L, I, O, P, Z, Perhexyl (registered trademark) ND, PV, D, I, O, Z, Perocta (registered trademark) ND, Nyper ( Registered trademarks) PMB, BMT, BW, Pertetra (registered trademark) A, Perhexa (registered trademark) MC, TMH, HC, 250, 25B, C, 25Z, 22, V, Perocta (registered trademark) O, Percumyl (registered trademark) ) ND, D, Permenta (registered trademark) H, Nofmar (registered trademark) BC; Wako Pure Chemical Industries, Ltd.
- radical polymerization initiator Only one type of radical polymerization initiator may be used, or two or more types may be used in combination.
- the content of the radical polymerization initiator is preferably 1 part by mass or more, 2 parts by mass or more, 3 parts by mass or more, 50 parts by mass or less, and 20 parts by mass or less with respect to 100 parts by mass of the polymer or compound having a crosslinkable group. It is 10 parts by mass or less.
- a hindered phenol compound may be used, specifically 2,6-diisobutylphenol, 3,5-di-t-butylphenol, 3,5-di-t-butylcresol, hydroquinone. , hydroquinone monomethyl ether, N-nitroso-N-phenylhydroxylamine aluminum, pyrogallol, t-butylcatechol, 4-methoxy-1-naphthol, 2,6-di-t-butyl-4-methylphenol, 2,5- Di-t-butyl-hydroquinone, Octadecyl-3-(3,5-di-t-butyl-4-hydroxyphenyl)propionate, Isooctyl-3-(3,5-di-t-butyl-4-hydroxy phenyl)propionate, 4,4'-methylenebis(2,6-di-t-butylphenol), 4,4'-thio-bis(3-methyl-6-t-buty
- 1,3,5-tris(4-t-butyl-3-hydroxy-2,6-dimethylbenzyl)-1,3,5-triazine-2,4,6-(1H, 3H,5H)-trione is preferred.
- a commercial product may be used as the polymerization inhibitor, and a specific example thereof is Irganox-3114 (manufactured by BASF Japan Ltd.).
- the content of the polymerization inhibitor is preferably 0.01 to 1 part by mass, more preferably 0.01 to 0.5 part by mass, with respect to 100 parts by mass of the polymer or compound having a crosslinkable group.
- surfactants include polyoxyethylene alkyl ether compounds such as polyoxyethylene lauryl ether, polyoxyethylene stearyl ether and polyoxyethylene oleyl ether; Oxyethylene alkyl allyl ether compounds, polyoxyethylene/polyoxypropylene block copolymer compounds, sorbitan fatty acid ester compounds such as sorbitan monolaurate, sorbitan monopalmitate, sorbitan monostearate, sorbitan trioleate and sorbitan tristearate, polyoxyethylene Examples include polyoxyethylene sorbitan fatty acid ester compounds such as ethylene sorbitan monolaurate, polyoxyethylene sorbitan monopalmitate, polyoxyethylene sorbitan monostearate and polyoxyethylene sorbitan tristearate.
- trade names Ftop EF301, EF303, EF352 (manufactured by Tochem Products Co., Ltd.), trade names Megafac F171, F173, R-08, R-30 (manufactured by Dainippon Ink Co., Ltd.), Florard FC430, FC431 (manufactured by Sumitomo 3M Co., Ltd.), product names Asahiguard AG710, Surflon S-382, SC101, SC102, SC103, SC104, SC105, SC106 (manufactured by Asahi Glass Co., Ltd.) and other fluorine-based surfactants and organosiloxane polymers.
- KP341 (manufactured by Shin-Etsu Chemical Co., Ltd.) and the like can be mentioned.
- the content of the surfactant is preferably 0.1 parts by mass or more, 0.5 parts by mass or more, 5 parts by mass or less, and 2 parts by mass or less with respect to 100 parts by mass of the polymer or compound having a crosslinkable group.
- an acidic compound As the acid catalyst, an acidic compound, a basic compound, or various compounds that generate an acid or base by heat or light can be used.
- a sulfonic acid compound or a carboxylic acid compound can be used as the acidic compound.
- An amine compound or an ammonium hydroxide compound can be used as the basic compound, and urea can be used as the compound that generates a base by heat.
- Amine compounds such as triethanolamine, tributanolamine, trimethylamine, triethylamine, tri-n-propylamine, tri-isopropylamine, tri-n-butylamine, tri-tert-butylamine, tri-n-octylamine, triisopropanolamine, phenyldiethanolamine, stearyl Tertiary amines such as diethanolamine and diazabicyclooctane, aromatic amines such as pyridine and 4-dimethylaminopyridine.
- Amine compounds also include primary amines such as benzylamine and n-butylamine, and secondary amines such as diethylamine and di-n-butylamine.
- ammonium hydroxide compounds include tetramethylammonium hydroxide, tetraethylammonium hydroxide, tetrapropylammonium hydroxide, tetrabutylammonium hydroxide, benzyltrimethylammonium hydroxide, benzyltriethylammonium hydroxide, cetyltrimethylammonium hydroxide, phenyltrimethylammonium hydroxide and phenyltriethylammonium hydroxide.
- thermal acid generators and photoacid generators can be used as acid generators.
- Thermal acid generators include, for example, p-toluenesulfonic acid, trifluoromethanesulfonic acid, pyridinium-p-toluenesulfonate (pyridinium-p-toluenesulfonic acid), pyridinium-p-hydroxybenzenesulfonic acid (p-phenolsulfonic acid pyridinium salt), pyridinium-trifluoromethanesulfonic acid, salicylic acid, camphorsulfonic acid, 5-sulfosalicylic acid, 4-chlorobenzenesulfonic acid, 4-hydroxybenzenesulfonic acid, benzenedisulfonic acid, 1-naphthalenesulfonic acid, citric acid, benzoic acid and sulfonic acid compounds such as hydroxybenzoic acid and carboxylic acid compounds.
- K-PURE registered trademark
- CXC-1612, CXC-1614, TAG-2172, TAG-2179, TAG-2678, and TAG2689 manufactured by King Industries
- SI-45, SI-60, SI-80, SI-100, SI-110, SI-150 manufactured by Sanshin Chemical Industry Co., Ltd.
- photoacid generators include sulfonium salts, iodonium salts, sulfonyldiazomethanes, N-sulfonyloxyimides, benzoinsulfonate-type photoacid generators, pyrogallol trisulfonate-type photoacid generators, sulfone-type photoacid generators, and glyoxime derivative-type photoacid generators. generators, oxime-O-sulfonate type acid generators, bisoxime sulfonate type acid generators and the like.
- Examples include bis(4-tert-butylphenyl)iodonium trifluoromethanesulfonate, triphenylsulfonium trifluoromethanesulfonate, phenyl-bis(trichloromethyl)-s-triazine, benzoin tosylate, and N-hydroxysuccinimide trifluoromethanesulfonate. be able to.
- thermal base generators include carbamates such as 1-methyl-1-(4-biphenylyl)ethylcarbamate and 2-cyano-1,1-dimethylethylcarbamate; urea, N,N-dimethyl-N'- ureas such as methylurea; guanidines such as guanidine trichloroacetate, guanidine phenylsulfonylacetate and guanidine phenylpropiolate; dihydropyridines such as 1,4-dihydronicotinamide; N-(isopropoxycarbonyl)-2,6-dimethyl Dimethylpiperidines such as piperidine, N-(tert-butoxycarbonyl)-2,6-dimethylpiperidine, N-(benzyloxycarbonyl)-2,6-dimethylpiperidine; tetramethylammonium phenylsulfonylacetate, tetramethylphenylpropiolate quatern
- the above components can be used alone or in combination of two or more. In that case, the amount is usually 10% by mass or less, preferably 3% by mass or less in the solid content of the protective film-forming composition of the present application. Used.
- the method for preparing the protective film composition of the present invention is not particularly limited. That is, a polymer or compound having a crosslinkable group, a solvent, and other components may be mixed in an arbitrary ratio and in an arbitrary order to form a uniform solution.
- the protective film-forming composition thus prepared in a solution state is preferably used after being filtered using a filter having a pore size of about 0.2 ⁇ m.
- the composition for forming a protective film preferably has a viscosity of about 100 cps or less at 25°C in order to form a protective film having a thickness of about 300 nm by spin coating.
- a viscosity is a measured value by an E-type viscometer.
- the properties of the protective film that covers the edges of semiconductor manufacturing substrates include the ability to prevent metal contamination as described above, as well as dry etching resistance, phosphoric acid resistance, tetramethylammonium hydroxide (TMAH) resistance, and HF removal. resistance to abrasion, good embeddability for stepped substrates, low sublimation amount, affinity for hydrophobic substrates, no crater foreign matter left on the side of the wafer, good edge shape, inner hump (just below the nozzle injection hole) It is desirable to satisfy the function of suppressing the phenomenon that the film-forming composition remains in a lump).
- the protective film-forming composition of the present invention is preferably photosensitive.
- it may be of the negative solvent development type.
- photosensitive protective film-forming composition after applying the photosensitive protective film-forming composition (negative type) to the front surface edge of the substrate and, optionally, the bevel portion and/or the back surface edge. By exposing and developing a portion of the film to be cured, the bevel portion can be accurately covered with the protective film.
- Photosensitivity makes it easy to control the film thickness of the protective film on the wafer edge, remove the inner hump, improve the edge shape, and correct the deviation of the center position during spin coating. has the advantage of
- the protective film-forming composition of the present invention has a partial structure (I) represented by the following formulas (1-1) to (1-7) described in WO2018/190380:
- R 1 , R 1a , R 3 , R 5a and R 6a are each independently an alkylene group having 1 to 10 carbon atoms, an arylene group having 6 to 40 carbon atoms (the alkylene group and the arylene group optionally substituted with one or more amido or amino groups), an oxygen atom, a carbonyl group, a sulfur atom, —C(O)—NR a —, —NR b —, or Represents a divalent group consisting of a combination of
- Each R 5 is independently a nitrogen atom, or a nitrogen atom and an alkylene group having 1 to 10 carbon atoms, or an arylene group having 6 to 40 carbon atoms (the alkylene group and arylene group are one or more at least one selected from the group consisting of an oxygen atom, a carbonyl group, a sulfur atom, —C(O)—NR a — and —NR b —
- the protective film-forming composition of the present invention may contain polysiloxane.
- the polysiloxane may be a modified polysiloxane in which some of the silanol groups are modified, for example, a modified polysiloxane in which some of the silanol groups are alcohol-modified or acetal-protected.
- Polysiloxane may be, for example, a hydrolytic condensate of a hydrolyzable silane, or a modified product in which at least part of the silanol groups of the hydrolytic condensate is alcohol-modified or acetal-protected (hereinafter referred to as It may be referred to as a “modified product of hydrolytic condensate”.).
- the hydrolyzable silane associated with the hydrolytic condensate can contain one or more hydrolyzable silanes.
- the polysiloxane can have any structure having a cage-type, ladder-type, straight-chain, or branched main chain. Furthermore, commercially available polysiloxanes can be used.
- the "hydrolytic condensate" of the hydrolyzable silane that is, the product of hydrolytic condensation, includes not only the polyorganosiloxane polymer, which is a condensate in which the condensation has been completely completed, but also Also included are polyorganosiloxane polymers that are incomplete partial hydrolytic condensates.
- Such a partially hydrolyzed condensate is also a polymer obtained by hydrolysis and condensation of a hydrolyzable silane, similar to the condensate in which the condensation is completely completed, but it stops at partial hydrolysis and condenses. , and therefore the Si--OH groups remain.
- the polysiloxane of the present invention include hydrolytic condensates of hydrolyzable silanes containing at least one hydrolyzable silane represented by the following formula (1) and modified products thereof.
- R 1 is a group bonded to a silicon atom and independently of each other, an optionally substituted alkyl group, an optionally substituted aryl group, an optionally substituted aralkyl optionally substituted halogenated alkyl group, optionally substituted halogenated aryl group, optionally substituted halogenated aralkyl group, optionally substituted alkoxyalkyl group, optionally substituted an alkoxyaryl group, an optionally substituted alkoxyaralkyl group, or an optionally substituted alkenyl group, or an organic group having an epoxy group, an organic group having an acryloyl group, or an organic group having a methacryloyl group; It represents an organic group having a mercapto group, an organic group having an amino group, an organic group having an alkoxy group, an organic group having a sulfonyl group, an organic group having a cyano group, or a combination of two or more thereof.
- R 2 is a group
- each group and atom in R 1 in formula (1) and preferred carbon numbers thereof include the groups and carbon numbers described above for R 3 in formulas (A-1) and (A-2) can be mentioned.
- Specific examples of each group and atom in R 2 in formula (1) and their preferred number of carbon atoms include the groups and atoms described above for X in formulas (A-1) and (A-2), and carbon I can name a few.
- hydrolyzable silane represented by Formula (1) includes tetramethoxysilane, tetrachlorosilane, tetraacetoxysilane, tetraethoxysilane, tetra-n-propoxysilane, tetra-i-propoxysilane, tetra-n -butoxysilane, methyltrimethoxysilane, methyltrichlorosilane, methyltriacetoxysilane, methyltriethoxysilane, methyltripropoxysilane, methyltributoxysilane, methyltriamyloxysilane, methyltriphenoxysilane, methyltribenzyloxysilane, methyltriphenethyloxysilane, glycidoxymethyltrimethoxysilane, glycidoxymethyltriethoxysilane, ⁇ -glycid
- the protective film-forming composition of the present invention is described in JP-A-2016-003160, (A) a polyfunctional epoxy (meth)acrylate compound, It may contain (B) a polyfunctional thiol compound and (C) a radical polymerization initiator.
- the component (A) may have a molecular weight of 300 to 20,000.
- the component (A) may be a bisphenol-type polyfunctional epoxy (meth)acrylate compound.
- the component (B) may be liquid at 25°C.
- a polymerization inhibitor may be contained. It may have a viscosity of 2,000 to 100,000 mPa ⁇ s at 25°C.
- the protective film-forming composition of the present invention may be a film-forming composition comprising a photopolymerizable substance and a photoinitiator as described in WO2009/104643.
- the photopolymerizable substance may be a compound having at least one cationic polymerizable reactive group, and the cationic polymerization initiator may be a photocationic polymerization initiator.
- the photopolymerizable substance may be a compound having at least one radically polymerizable reactive group, and the photopolymerization initiator may be a radical photopolymerization initiator.
- the photopolymerizable compound may be a sugar compound.
- the sugar compounds may be monosaccharide or disaccharide compounds.
- the sugar compound has the formula (10):
- G 1 represents a sugar skeleton
- T represents a divalent linking group
- R 1 represents a vinyl group or glycidyl group
- R 2 represents a hydrogen atom or a hydroxyl group
- n and L are 0 or 1, respectively.
- p is an integer representing the total number of hydroxyl groups possessed by the sugar
- m is an integer satisfying 1 ⁇ m ⁇ (pm).
- the photopolymerizable compound may be an alicyclic epoxy compound or an alicyclic oxetane compound.
- the alicyclic epoxy compound may be a cycloalkylene oxide derivative.
- the alicyclic epoxy compound is represented by formula (2) or formula (3):
- G2 represents a monovalent to pentavalent linking group having an alkylene group, carbonyloxy group, heterocyclic ring, aromatic ring, or a combination thereof
- G3 represents an alkyl group, an alkylcarbonyl group, a heterocyclic ring, an aromatic an organic group having a ring or a combination thereof, n and m each representing an integer of 1 to 5).
- the molecular weight of the polysiloxane used in the present invention is the molecular weight obtained in terms of polystyrene by GPC analysis.
- GPC measurement conditions are, for example, a GPC device (trade name HLC-8220GPC, manufactured by Tosoh Corporation), GPC columns (TSKgel Super-MultiporeHZ-N (2 columns)), column temperature 40° C., eluent (elution solvent) Tetrahydrofuran, a flow rate (flow rate) of 0.35 mL/min, and polystyrene (manufactured by Sigma-Aldrich) as a standard sample can be used.
- reaction by-products methanol, ethanol and water, were distilled off under reduced pressure and concentrated to obtain a hydrolyzed condensate (polymer) solution.
- propylene glycol monomethyl ether was added to adjust the concentration so that the solvent ratio of 100% propylene glycol monomethyl ether was 20% by mass in terms of solid residue at 150° C., and filtered through a nylon filter (pore size 0.1 ⁇ m). gone.
- the obtained polymer contained a structure represented by the following formula (YY), and had a weight average molecular weight of Mw 3,300 in terms of polystyrene by GPC.
- Epoxy group-containing novolac resin product name: EPPN-201, epoxy value: 192 g/eq., manufactured by Nippon Kayaku Co., Ltd.
- acrylic acid 11.26 g acrylic acid 11.26 g
- tetrabutylphosphonium bromide 1.99 g acrylic acid 11.26 g
- hydroquinone 0 101.11 g of propylene glycol monomethyl ether acetate was added to .09 g, and the mixture was heated and stirred at 100° C. for 18 hours in a nitrogen atmosphere.
- the resulting solution was added with 43 g of a cation exchange resin (product name: Dowex [registered trademark] 550A, Muromachi Technos Co., Ltd.) and an anion exchange resin (product name: Amberlite [registered trademark] 15JWET, Organo Corporation). 43 g was added and subjected to ion exchange treatment at room temperature for 4 hours. After separating the ion exchange resin, a compound solution was obtained. The obtained compound corresponded to the formula (XX) and had a weight average molecular weight Mw of 6,900 as measured by GPC in terms of polystyrene.
- a cation exchange resin product name: Dowex [registered trademark] 550A, Muromachi Technos Co., Ltd.
- an anion exchange resin product name: Amberlite [registered trademark] 15JWET, Organo Corporation
- reaction by-products methanol, ethanol and water, were distilled off under reduced pressure and concentrated to obtain a hydrolyzed condensate (polymer) solution.
- propylene glycol monomethyl ether was added to adjust the concentration so that the solvent ratio of 100% propylene glycol monomethyl ether was 20% by mass in terms of solid residue at 150° C., and filtered through a nylon filter (pore size 0.1 ⁇ m). gone.
- the obtained polymer contained a structure represented by the following formula (ZZ), and had a weight average molecular weight of Mw 3,400 in terms of polystyrene by GPC.
- Irgacure Oxe01 manufactured by BASF Japan Ltd.
- Megafac R-30 Dainippon Ink Kagaku Co., Ltd., trade name
- the protective film-forming compositions prepared in Preparation Examples 1 to 3 were spin-coated on silicon wafers, and then coated using a coater manufactured by Tokyo Electron Co., Ltd. Using a wafer edge exposure module (WEE) from developer LithiusPro, the wafer edge portion was exposed to mercury lamp light at an exposure amount of 36 mJ/cm 2 (254 nm wavelength). After the exposure, development was performed for 30 seconds using OK73 thinner (manufactured by Tokyo Ohka Kogyo Co., Ltd.) as a developer to form a pattern on the wafer edge portion.
- WEE wafer edge exposure module
- a protective film capable of completely covering the edges of a semiconductor manufacturing substrate (wafer) by a simple coating method, and a protective film-forming composition for forming the protective film. It is possible to provide a product, a semiconductor manufacturing wafer manufactured using the protective film, the semiconductor manufacturing wafer, and a method of manufacturing a semiconductor device.
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Abstract
Description
[1]
架橋性基を持つポリマー又は化合物、及び溶剤を含む、半導体製造用ウエハ端部保護膜形成組成物。
[2]
前記架橋性基が、エポキシ基、(メタ)アクリル基、ビニル基、カルボン酸基、チオール基、シラノール基、シンナモイル基、及び水酸基からなる群より選ばれる、[1]に記載の保護膜形成組成物。
[3]
25℃において100cps以下の粘度を有する、[1]又は[2]に記載の保護膜形成組成物。
[4]
感光性である、[1]~[3]何れか1項に記載の保護膜形成組成物。
[5]
[1]~[4]何れか1項に記載の保護膜形成組成物からなる塗布膜の硬化物である保護膜。
[6]
1nm~10μmの厚みを有する、[5]に記載の保護膜。
[7]
ウエハ端部の金属汚染を防止するための、[5]又は[6]に記載の保護膜。
[8]
170~800nmの波長の光により硬化した、[5]~[7]何れか1項に記載の保護膜。
[9]
ウエハ端部が保護された半導体製造用ウエハであって、ウエハ前駆体の端部に、[1]~[4]何れか1項に記載の保護膜形成組成物を塗布して形成した、半導体製造用ウエハ。
[10]
(A) 半導体基板上にレジスト膜を形成する工程と、
(B) レジスト膜に対する光又は電子線の照射とその後の現像によりレジストパターンを形成する工程と、
(C) 半導体基板をエッチングで加工する工程と、
を含む半導体装置の製造方法において、
半導体製造用ウエハの表面端部と、任意選択的にベベル部及び/又は裏面端部に、
[1]~[4]何れか1項に記載の保護膜形成組成物からの保護膜を形成する工程(X)
を含む、
半導体装置の製造方法。
[11]
工程(A)の前に工程(X)を含む、[10]に記載の半導体装置の製造方法。
[12]
工程(A)と工程(B)との間に工程(X)を含む、[10]に記載の半導体装置の製造方法。
[13]
工程(B)又は工程(C)の後に工程(X)を含む、[10]に記載の半導体装置の製造方法。
[14]
工程(X)の後に、前記保護膜の上の部分のレジスト膜を除去する工程(Y)を含む、[10]~[13]何れか1項に記載の半導体装置の製造方法。
[15]
工程(X)の後に、前記保護膜を除去する工程(Z)を含む、[10]~[13]何れか1項に記載の半導体装置の製造方法。
[16]
工程(Y)の後に、前記保護膜を除去する工程(Z)を含む、[14]に記載の半導体装置の製造方法。
[17]
前記レジスト膜が金属を含む、[10]~[16]何れか1項に記載の半導体装置の製造方法。
[18]
前記工程(X)において、[4]に記載の保護膜形成組成物を塗布し、所定の領域に露光、現像を行う、[10]~[17]何れか1項に記載の半導体装置の製造方法。
[19]
工程(Z)をアッシング、又はフッ化水素酸、有機溶剤、アルカリ現像液、若しくは半導体用洗浄液による処理により行う、[15]又は[16]に記載の半導体装置の製造方法。
[20]
半導体製造用ウエハの製造方法であって、
ウエハ前駆体の端部に、[1]~[4]何れか1項に記載の保護膜形成用組成物を塗布し、前記端部が保護されたウエハを製造する工程、
を含む、半導体製造用ウエハの製造方法。
(A) 半導体基板上にレジスト膜を形成する工程と、
(B) レジスト膜に対する光又は電子線の照射とその後の現像によりレジストパターンを形成する工程と、
(C) 半導体基板をエッチングにより加工する工程、又はパターン化された前記レジストを介して半導体基板をエッチングにより加工する工程と、
を含む半導体装置の製造方法において、
半導体製造用ウエハの表面端部と、任意選択的にベベル部及び/又は裏面端部に、
架橋性基を持つポリマー又は化合物、及び溶剤を含む、半導体製造用ウエハ端部保護膜形成組成物からの保護膜を形成する工程(X)
を含む、
半導体装置の製造方法である。
[(A)半導体基板上にレジスト膜を形成する工程]
半導体基板上にレジスト膜を形成する。半導体基板は、半導体素子等の製造のために使用されるウエハであり、一般的に用いられるシリコンウェハー、ゲルマニウムウェハーの他、例えば、ヒ化ガリウム、リン化インジウム、窒化ガリウム、窒化インジウム、窒化アルミニウム等の2種類以上の元素が結合してできる化合物半導体ウエハが使用できる。これらは通常円盤状であり、大きさは例えば4、6、8、12インチ等である。市販品を使用してよい。
レジスト膜の平均厚さの下限は、好ましくは1nm、より好ましくは3nm、5nm、10nmである。レジスト膜の平均厚さの上限は、5,000nm、3,000nm、2,000nm、好ましくは1,000nm、より好ましくは200nm、より好ましくは50nmである。
半導体製造用ウエハの表面端部と、任意選択的にベベル部及び/又は裏面端部に、保護膜形成組成物からの保護膜を形成する工程(X)を任意の時点で行う。工程(X)においては、好ましくは、保護膜形成組成物を塗布し、所定の領域に露光、現像を行う。工程(X)は、工程(A)の前に行ってもよく、工程(A)と工程(B)との間に行ってもよく、工程(B)又は工程(C)の後に行ってもよい。
・保護膜形成組成物の粘度:約100cps以下
・ウエハの回転速度:
・・保護膜形成組成物供給時:50~500rpm
・・乾燥振り切り時:700~2,000rpm
・保護膜厚み:300nm
保護膜の平均厚さの下限は、例えば1nm、3nm、5nm、10nm、30nm、50nm、80nm、100nm、150nm、200nmである。保護膜の平均厚さの上限は、例えば10μm、8μm、5μm、3μm、1μm、800nm、500nm、300nmである。
レジスト膜に対する露光は、所定のパターンを形成するためのマスク(レチクル)を通して行われ、例えば、i線、KrFエキシマレーザー、ArFエキシマレーザー、EUV(極端紫外線)またはEB(電子線)が使用される。なお、露光前にソフトベーク(SB)を行ってもよく、露光後現像前に露光後加熱(PEB)を行ってもよい。露光後加熱の温度は50℃~150℃、露光後加熱の時間は1分~10分が好ましい。
ベーク温度は通常40℃~300℃、好ましくは200~300℃で1~30分間であるが、レジストパターンのダメージを避ける必要がある場合には90℃以下に設定してもよい。
上記半導体基板を加工するためのエッチングは、公知の方法であってよく、例えば半導体基板がシリコン基板である場合は、4フッ化炭素等のフッ素系ガスを用いてドライエッチングにより形状加工する工程の他、半導体基板表面に存在する窒化ケイ素膜を熱リン酸で除去する等の表面処理工程も含む。
本発明に係る半導体製造用ウエハの製造方法は、上記のような半導体装置の製造方法において、架橋性基を持つポリマー又は化合物、及び溶剤を含む半導体製造用ウエハ端部保護膜形成用組成物を、半導体製造用ウエハ前駆体の表面端部と、任意選択的にベベル部及び/又は裏面端部に施用(又は塗布)し、保護膜付き半導体製造用ウエハを製造する工程を含む。
半導体装置製造プロセスを1工程以上経て得た、半導体製造用ウエハ前駆体の表面端部と、任意選択的にベベル部及び/又は裏面端部に、架橋性基を持つポリマー又は化合物、及び溶剤を含む半導体製造用ウエハ端部保護膜形成用組成物をスピンコートにより塗布する。
前記保護膜形成組成物を塗布した後、保護膜端面にエッジビード除去、バックリンス等、半導体製造プロセスにおける公知の処理を行ってよい。
本発明の半導体製造用ウエハは、ウエハ端部が保護された半導体製造用ウエハであって、ウエハ端部に、架橋性基を有するポリマー及び溶剤を含む前記保護膜形成組成物を塗布して形成した、半導体製造用ウエハである。
本発明の保護膜形成組成物は、半導体製造用ウエハ表面端部を保護するために用いる保護膜形成組成物であって、架橋性基を持つポリマー又は化合物及び溶剤を含む、保護膜形成組成物である。
・エポキシ(メタ)アクリレート、
・けい皮酸グラフトエポキシノボラック、
・フェノールとアルデヒドの水の除去を伴う重縮合および三次元網目の形成によって得られる熱硬化性材料であるフェノプラスト、
・例えば、トリメチロールメラミン、ヘキサメチロールメラミンなどのメラミン樹脂、ジメチロールプロピレン尿素、ジメチロールエチレン尿素、ジメチロールヒドロキシン尿素などの尿素系樹脂、ジメチロールウロン樹脂等のアミノブラスト樹脂、
・(ブロック)イソシアネート、
・ビニルエーテル、
・(メタ)アクリル基を持つポリシロキサン樹脂
・エポキシ樹脂。
ヒンダードフェノール化合物の中でも、1,3,5-トリス(4-t-ブチル-3-ヒドロキシ-2,6-ジメチルベンジル)-1,3,5-トリアジン-2,4,6-(1H,3H,5H)-トリオンが好ましい。
上記重合禁止剤は市販品を使用してもよく、具体例としてはIrganox-3114(BASFジャパン株式会社製)が挙げられる。
スルホン酸化合物又はカルボン酸化合物として、例えば、p-トルエンスルホン酸、トリフルオロメタンスルホン酸、ピリジニウムトリフルオロメタンスルホナート(=ピリジニウムトリフルオロメタンスルホン酸)、ピリジニウム-p-トルエンスルホネート、ピリジニウム-4-ヒドロキシベンゼンスルホナート、サリチル酸、カンファースルホン酸、5-スルホサリチル酸、4-クロロベンゼンスルホン酸、4-フェノールスルホン酸、ピリジニウム-4-フェノールスルホネート、ベンゼンジスルホン酸、1-ナフタレンスルホン酸、4-ニトロベンゼンスルホン酸、クエン酸、安息香酸、ヒドロキシ安息香酸が挙げられる。
アミン化合物として、例えば、トリエタノールアミン、トリブタノールアミン、トリメチルアミン、トリエチルアミン、トリノルマルプロピルアミン、トリイソプロピルアミン、トリノルマルブチルアミン、トリ-tert-ブチルアミン、トリノルマルオクチルアミン、トリイソプロパノールアミン、フェニルジエタノールアミン、ステアリルジエタノールアミン、及びジアザビシクロオクタン等の第3級アミン、ピリジン及び4-ジメチルアミノピリジン等の芳香族アミンが挙げられる。また、ベンジルアミン及びノルマルブチルアミン等の第1級アミン、ジエチルアミン及びジノルマルブチルアミン等の第2級アミンもアミン化合物として挙げられる。
水酸化アンモニウム化合物としては、例えば、水酸化テトラメチルアンモニウム、水酸化テトラエチルアンモニウム、水酸化テトラプロピルアンモニウム、水酸化テトラブチルアンモニウム、水酸化ベンジルトリメチルアンモニウム、水酸化ベンジルトリエチルアンモニウム、水酸化セチルトリメチルアンモニウム、水酸化フェニルトリメチルアンモニウム、水酸化フェニルトリエチルアンモニウムが挙げられる。
市販品としては、例えば、K-PURE〔登録商標〕CXC-1612、同CXC-1614、同TAG-2172、同TAG-2179、同TAG-2678、同TAG2689(以上、King Industries社製)、及びSI-45、SI-60、SI-80、SI-100、SI-110、SI-150(以上、三新化学工業株式会社製)が挙げられる。
R5は、それぞれ独立して、窒素原子、又は窒素原子と炭素原子数1~10のアルキレン基、炭素原子数6~40のアリーレン基(該アルキレン基及びアリーレン基は、1つ又は2つ以上のアミド基又はアミノ基で任意に置換されていても良い)、酸素原子、カルボニル基、イオウ原子、-C(O)-NRa-及び-NRb-からなる群から選択される少なくとも一つ以上の基との組み合わせからなる3価の基を表し、
R2、R2a、R4、及びR6は、それぞれ独立して水素原子、炭素原子数1~10のアルキル基、又は水素原子と、炭素原子数1~10のアルキレン基、酸素原子、カルボニル基、-C(O)-NRa-及び-NRb-からなる群から選択される少なくとも一つ以上の基との組み合わせからなる1価の基を表し、
Raは水素原子又は炭素原子数1~10のアルキル基を表し、
Rbは、水素原子、炭素原子数1~10のアルキル基又は炭素原子数1~10のアルキルカルボニル基を表し、
nは1~10の繰り返し単位数を表し、及び
点線は隣接原子との化学結合を表す。)
から選ばれる少なくとも一つの部分構造を含む化合物(E)と溶剤(F)とを含む組成物であってよい。
またポリシロキサンは、一例として加水分解性シランの加水分解縮合物であってもよいし、加水分解縮合物が有するシラノール基の少なくとも一部がアルコール変性された又はアセタール保護された変性物(以下、「加水分解縮合物の変性物」と称することがある。)であってもよい。加水分解縮合物に係る加水分解性シランは、一種又は二種以上の加水分解性シランを含むことができる。
ポリシロキサンは、かご型、ラダー型、直鎖型、及び分岐型のいずれの主鎖を有する構造であるものとすることができる。さらに市販のポリシロキサンを使用することができる。
本発明のポリシロキサンとして、例えば下記式(1)で表される少なくとも1種の加水分解性シランを含む加水分解性シランの加水分解縮合物又はその変性物を挙げることができる。
またR2は、ケイ素原子に結合する基又は原子であって、互いに独立して、アルコキシ基、アラルキルオキシ基、アシルオキシ基、又はハロゲン原子を表す。
aは0~3の整数を表す。
式(1)中のR2における各基及び原子の具体例、並びにそれらの好適な炭素数としては、式(A-1)及び(A-2)中のXについて前述した基及び原子並びに炭素数を挙げることができる。
式(1)で表される加水分解性シランの具体例としては、テトラメトキシシラン、テトラクロロシラン、テトラアセトキシシラン、テトラエトキシシラン、テトラ-n-プロポキシシラン、テトラ-i-プロポキシシラン、テトラ-n-ブトキシシラン、メチルトリメトキシシラン、メチルトリクロロシラン、メチルトリアセトキシシラン、メチルトリエトキシシラン、メチルトリプロポキシシラン、メチルトリブトキシシラン、メチルトリアミロキシシラン、メチルトリフェノキシシラン、メチルトリベンジルオキシシラン、メチルトリフェネチルオキシシラン、グリシドキシメチルトリメトキシシラン、グリシドキシメチルトリエトキシシラン、α-グリシドキシエチルトリメトキシシラン、α-グリシドキシエチルトリエトキシシラン、β-グリシドキシエチルトリメトキシシラン、β-グリシドキシエチルトリエトキシシラン、α-グリシドキシプロピルトリメトキシシラン、α-グリシドキシプロピルトリエトキシシラン、β-グリシドキシプロピルトリメトキシシラン、β-グリシドキシプロピルトリエトキシシラン、γ-グリシドキシプロピルトリメトキシシラン、γ-グリシドキシプロピルトリエトキシシラン、γ-グリシドキシプロピルトリプロポキシシラン、γ-グリシドキシプロピルトリブトキシシラン、γ-グリシドキシプロピルトリフェノキシシラン、α-グリシドキシブチルトリメトキシシラン、α-グリシドキシブチルトリエトキシシラン、β-グリシドキシブチルトリエトキシシラン、γ-グリシドキシブチルトリメトキシシラン、γ-グリシドキシブチルトリエトキシシラン、δ-グリシドキシブチルトリメトキシシラン、δ-グリシドキシブチルトリエトキシシラン、(3,4-エポキシシクロヘキシル)メチルトリメトキシシラン、(3,4-エポキシシクロヘキシル)メチルトリエトキシシラン、β-(3,4-エポキシシクロヘキシル)エチルトリメトキシシラン、β-(3,4-エポキシシクロヘキシル)エチルトリエトキシシラン、β-(3,4-エポキシシクロヘキシル)エチルトリプロポキシシラン、β-(3,4-エポキシシクロヘキシル)エチルトリブトキシシラン、β-(3,4-エポキシシクロヘキシル)エチルトリフェノキシシラン、γ-(3,4-エポキシシクロヘキシル)プロピルトリメトキシシラン、γ-(3,4-エポキシシクロヘキシル)プロピルトリエトキシシラン、δ-(3,4-エポキシシクロヘキシル)ブチルトリメトキシシラン、δ-(3,4-エポキシシクロヘキシル)ブチルトリエトキシシラン、グリシドキシメチルメチルジメトキシシラン、グリシドキシメチルメチルジエトキシシラン、α-グリシドキシエチルメチルジメトキシシラン、α-グリシドキシエチルメチルジエトキシシラン、β-グリシドキシエチルメチルジメトキシシラン、β-グリシドキシエチルエチルジメトキシシラン、α-グリシドキシプロピルメチルジメトキシシラン、α-グリシドキシプロピルメチルジエトキシシラン、β-グリシドキシプロピルメチルジメトキシシラン、β-グリシドキシプロピルエチルジメトキシシラン、γ-グリシドキシプロピルメチルジメトキシシラン、γ-グリシドキシプロピルメチルジエトキシシラン、γ-グリシドキシプロピルメチルジプロポキシシラン、γ-グリシドキシプロピルメチルジブトキシシラン、γ-グリシドキシプロピルメチルジフェノキシシラン、γ-グリシドキシプロピルエチルジメトキシシラン、γ-グリシドキシプロピルエチルジエトキシシラン、γ-グリシドキシプロピルビニルジメトキシシラン、γ-グリシドキシプロピルビニルジエトキシシラン、エチルトリメトキシシラン、エチルトリエトキシシラン、ビニルトリメトキシシラン、ビニルトリエトキシシラン、ビニルトリクロロシラン、ビニルトリアセトキシシラン、メチルビニルジメトキシシラン、メチルビニルジエトキシシラン、メチルビニルジクロロシラン、メチルビニルジアセトキシシラン、ジメチルビニルメトキシシラン、ジメチルビニルエトキシシラン、ジメチルビニルクロロシラン、ジメチルビニルアセトキシシラン、ジビニルジメトキシシラン、ジビニルジエトキシシラン、ジビニルジクロロシラン、ジビニルジアセトキシシラン、γ-グリシドキシプロピルビニルジメトキシシラン、γ-グリシドキシプロピルビニルジエトキシシラン、アリルトリメトキシシラン、アリルトリエトキシシラン、アリルトリクロロシラン、アリルトリアセトキシシシラン、アリルメチルジメトキシシラン、アリルメチルジエトキシシラン、アリルメチルジクロロシラン、アリルメチルジアセトキシシラン、アリルジメチルメトキシシラン、アリルジメチルエトキシシラン、アリルジメチルクロロシラン、アリルジメチルアセトキシシラン、ジアリルジメトキシシラン、ジアリルジエトキシシラン、ジアリルジクロロシラン、ジアリルジアセトキシシラン、3-アリルアミノプロピルトリメトキシシラン、3-アリルアミノプロピルトリエトキシシラン、p-スチリルトリメトキシシラン、フェニルトリメトキシシラン、フェニルトリエトキシシラン、フェニルトリクロロシラン、フェニルトリアセトキシシラン、フェニルメチルジメトキシシラン、フェニルメチルジエトキシシラン、フェニルメチルジクロロシラン、フェニルメチルジアセトキシシラン、フェニルジメチルメトキシシラン、フェニルジメチルエトキシシラン、フェニルジメチルクロロシラン、フェニルジメチルアセトキシシラン、ジフェニルメチルメトキシシラン、ジフェニルメチルエトキシシラン、ジフェニルメチルクロロシラン、ジフェニルメチルアセトキシシラン、ジフェニルジメトキシシラン、ジフェニルジエトキシシラン、ジフェニルジクロロシラン、ジフェニルジアセトキシシラン、トリフェニルメトキシシシラン、トリフェニルエトキシシラン、トリフェニルアセトキシシラン、トリフェニルクロロシラン、3-フェニルアミノプロピルトリメトキシシラン、3-フェニルアミノプロピルトリエトキシシラン、ジメトキシメチル-3-(3-フェノキシプロピルチオプロピル)シラン、トリエトキシ((2-メトキシ-4-(メトキシメチル)フェノキシ)メチル)シラン、ベンジルトリメトキシシラン、ベンジルトリエトキシシラン、ベンジルメチルジメトキシシラン、ベンジルメチルジエトキシシラン、ベンジルジメチルメトキシシラン、ベンジルジメチルエトキシシラン、ベンジルジメチルクロロシラン、フェネチルトリメトキシシラン、フェネチルトリエトキシシラン、フェネチルトリクロロシラン、フェネチルトリアセトキシシラン、フェネチルメチルジメトキシシラン、フェネチルメチルジエトキシシラン、フェネチルメチルジクロロシラン、フェネチルメチルジアセトキシシラン、メトキシフェニルトリメトキシシラン、メトキシフェニルトリエトキシシラン、メトキシフェニルトリアセトキシシラン、メトキシフェニルトリクロロシラン、メトキシベンジルトリメトキシシラン、メトキシベンジルトリエトキシシラン、メトキシベンジルトリアセトキシシラン、メトキシベンジルトリクロロシラン、メトキシフェネチルトリメトキシシラン、メトキシフェネチルトリエトキシシラン、メトキシフェネチルトリアセトキシシラン、メトキシフェネチルトリクロロシラン、エトキシフェニルトリメトキシシラン、エトキシフェニルトリエトキシシラン、エトキシフェニルトリアセトキシシラン、エトキシフェニルトリクロロシラン、エトキシベンジルトリメトキシシラン、エトキシベンジルトリエトキシシラン、エトキシベンジルトリアセトキシシラン、エトキシベンジルトリクロロシラン、i-プロポキシフェニルトリメトキシシラン、i-プロポキシフェニルトリエトキシシラン、i-プロポキシフェニルトリアセトキシシラン、i-プロポキシフェニルトリクロロシラン、i-プロポキシベンジルトリメトキシシラン、i-プロポキシベンジルトリエトキシシラン、i-プロポキシベンジルトリアセトキシシラン、i-プロポキシベンジルトリクロロシラン、t-ブトキシフェニルトリメトキシシラン、t-ブトキシフェニルトリエトキシシラン、t-ブトキシフェニルトリアセトキシシラン、t-ブトキシフェニルトリクロロシラン、t-ブトキシベンジルトリメトキシシラン、t-ブトキシベンジルトリエトキシシラン、t-ブトキシベンジルトリアセトキシシラン、t-ブトキシシベンジルトリクロロシラン、メトキシナフチルトリメトキシシラン、メトキシナフチルトリエトキシシラン、メトキシナフチルトリアセトキシシラン、メトキシナフチルトリクロロシラン、エトキシナフチルトリメトキシシラン、エトキシナフチルトリエトキシシラン、エトキシナフチルトリアセトキシシラン、エトキシナフチルトリクロロシラン、γ-クロロプロピルトリメトキシシラン、γ-クロロプロピルトリエトキシシラン、γ-クロロプロピルトリアセトキシシラン、3,3,3-トリフルオロプロピルトリメトキシシラン、γ-メタクリルオキシプロピルトリメトキシシラン、γ-メルカプトプロピルトリメトキシシラン、γ-メルカプトプロピルトリエトキシシラン、β-シアノエチルトリエトキシシラン、チオシアネートプロピルトリエトキシシラン、クロロメチルトリメトキシシラン、クロロメチルトリエトキシシラン、トリエトキシシリルプロピルジアリルイソシアヌレート、ビシクロ[2,2,1]ヘプテニルトリエトキシシラン、ベンゼンスルホニルプロピルトリエトキシシラン、ベンゼンスルホンアミドプロピルトリエトキシシラン、ジメチルアミノプロピルトリメトキシシラン、ジメチルジメトキシシラン、フェニルメチルジメトキシシラン、ジメチルジエトキシシラン、フェニルメチルジエトキシシラン、γ-クロロプロピルメチルジメトキシシラン、γ-クロロプロピルメチルジエトキシシラン、ジメチルジアセトキシシラン、γ-メタクリルオキシプロピルメチルジメトキシシラン、γ-メタクリルオキシプロピルメチルジエトキシシラン、γ-メルカプトプロピルメチルジメトキシシラン、γ-メルカプトメチルジエトキシシラン、メチルビニルジメトキシシラン、メチルビニルジエトキシシランが挙げられるが、これらに限定されない。
(A)多官能エポキシ(メタ)アクリレート化合物、
(B)多官能チオール化合物、及び
(C)ラジカル重合開始剤を含有するものであってよい。
上記(A)成分がビスフェノール型多官能エポキシ(メタ)アクリレート化合物であってよい。
上記(B)成分が25℃で液状であってよい。
更に、(D)重合禁止剤を含有してよい。
25℃における粘度が2,000~100,000mPa・sであってよい。
前記光重合性物質がカチオン重合可能な反応性基を少なくとも一つ有する化合物であり、前記カチオン重合開始剤が光カチオン重合開始剤であってよい。
前記光重合性物質がラジカル重合可能な反応性基を少なくとも一つ有する化合物であり、前記光重合開始剤が光ラジカル重合開始剤であってよい。
前記糖化合物が単糖類又は二糖類化合物であってよい。
前記糖化合物が式(10):
前記脂環式エポキシ化合物がシクロアルキレンオキシド誘導体であってよい。
前記脂環式エポキシ化合物が式(2)又は式(3):
本発明で用いるポリシロキサンの分子量は、GPC分析によるポリスチレン換算で得られる分子量である。
GPCの測定条件は、例えばGPC装置(商品名HLC-8220GPC、東ソー株式会社製)、GPCカラム(TSKgel Super-MultiporeHZ-N (2本))、カラム温度は40℃、溶離液(溶出溶媒)はテトラヒドロフラン、流量(流速)は0.35mL/min、標準試料はポリスチレン(シグマアルドリッチ社製)を用いて行うことができる。
<合成例1>
テトラエトキシシラン20.8g、3-(トリメトキシシリル)プロピルメタクリレート24.8g、2,6-ジ-t-ブチル-4-メチルフェノール0.4g、及びプロピレングリコールモノメチルエーテル19.6gを300mlのフラスコに入れ、得られた混合溶液をマグネチックスターラーにて撹拌しながら0.2M硝酸水溶液25.2gを滴下した。滴下後、80℃に調整されたオイルバスにフラスコを移し、20時間還流させた。その後、反応副生物である、メタノール、エタノール、及び水を減圧留去し、濃縮して加水分解縮合物(ポリマー)溶液を得た。
さらにプロピレングリコールモノメチルエーテルを加え、プロピレングリコールモノメチルエーテル100%の溶媒比率として150℃における固形残物換算で20質量パーセントとなるように濃度調整し、ナイロン製フィルタ(孔径0.1μm)にてろ過を行った。得られたポリマーは下記式(YY)で表される構造を含み、その重量平均分子量は、GPCによるポリスチレン換算でMw3,300であった。
エポキシ基含有ノボラック樹脂(製品名:EPPN-201、エポキシ価:192g/eq.、日本化薬(株)製、)30.00g、アクリル酸11.26g、テトラブチルホスホニウムブロマイド1.99g、ヒドロキノン0.09gにプロピレングリコールモノメチルエーテルアセテート101.11gを加え、窒素雰囲気下、100℃で18時間加熱撹拌した。得られた溶液に陽イオン交換樹脂(製品名:ダウエックス〔登録商標〕550A、ムロマチテクノス(株))43g、陰イオン交換樹脂(製品名:アンバーライト〔登録商標〕15JWET、オルガノ(株))43gを加えて、室温で4時間イオン交換処理した。イオン交換樹脂を分離後、化合物溶液が得られた。得られた化合物は式(XX)に相当し、GPCによりポリスチレン換算で測定される重量平均分子量Mwは6,900であった。
テトラエトキシシラン20.8g、(3-メルカプトプロピル)トリメトキシシラン24.21g、ビニルトリメトキシシラン3.18g、及びプロピレングリコールモノメチルエーテル18.8gを100mlのフラスコに入れ、得られた混合溶液をマグネチックスターラーにて撹拌しながら0.2M硝酸水溶液14.2gを滴下した。滴下後、80℃に調整されたオイルバスにフラスコを移し、20時間還流させた。その後、反応副生物である、メタノール、エタノール、及び水を減圧留去し、濃縮して加水分解縮合物(ポリマー)溶液を得た。
さらにプロピレングリコールモノメチルエーテルを加え、プロピレングリコールモノメチルエーテル100%の溶媒比率として150℃における固形残物換算で20質量パーセントとなるように濃度調整し、ナイロン製フィルタ(孔径0.1μm)にてろ過を行った。得られたポリマーは下記式(ZZ)で表される構造を含み、その重量平均分子量は、GPCによるポリスチレン換算でMw3,400であった。
<調製例1>
合成例1で得られたポリシロキサン(ポリマー)9.5gに、光重合開始剤としてIrgacure Oxe01(BASFジャパン株式会社製)0.48g、界面活性剤としてメガファックR-30(大日本インキ化学(株)製、商品名)0.01gを混合し、プロピレングリコールモノメチルエーテル51.9gに溶解させ、保護膜形成組成物の溶液とした。
合成例2で得た樹脂溶液(固形分は23.73質量%)11.72gに光重合開始剤としてIrgacure Oxe01(BASFジャパン(株)製)0.28g、界面活性剤としてメガファックR-30(大日本インキ化学(株)製)0.008g、酸化防止剤としてIrganox3114(BASFジャパン(株)製)0.042g、密着性向上剤としてKBM-5103(信越化学工業(株)製)0.042、プロピレングリコールモノメチルエーテルアセテート17.91gを加え、保護膜形成組成物の溶液を得た。
合成例3で得られたポリシロキサン(ポリマー)24.4gに、光重合開始剤としてIrgacure Oxe01(BASFジャパン株式会社製)0.12gを混合し、界面活性剤としてメガファックR-30(大日本インキ化学(株)製、商品名)0.005gを混合し、プロピレングリコールモノメチルエーテル23.3g、超純水2.3gに溶解させ、保護膜形成組成物の溶液とした。
実施例1乃至3として、調製例1乃至3で作製された保護膜形成組成物を、それぞれシリコンウエハ上にスピンコートし、その後、東京エレクロトン(株)製コーター・デベロッパーLithiusProのウエハエッジ露光モジュール(WEE)を用いて、水銀ランプ光を36mJ/cm2(254nm波長)の露光量でウエハエッジ部に露光を行った。露光後、現像液としてOK73シンナー(東京応化工業(株)製)を用いて30秒現像し、ウエハエッジ部にパターンを形成した。
Claims (21)
- 架橋性基を持つポリマー又は化合物、及び溶剤を含む、半導体製造用ウエハ端部保護膜形成組成物。
- 前記架橋性基が、エポキシ基、(メタ)アクリル基、ビニル基、カルボン酸基、チオール基、シラノール基、シンナモイル基、及び水酸基からなる群より選ばれる、請求項1に記載の保護膜形成組成物。
- 25℃において100cps以下の粘度を有する、請求項1に記載の保護膜形成組成物。
- 感光性である、請求項1に記載の保護膜形成組成物。
- 請求項1~4何れか1項に記載の保護膜形成組成物からなる塗布膜の硬化物である保護膜。
- 1nm~10μmの厚みを有する、請求項5に記載の保護膜。
- ウエハ端部の金属汚染を防止するための、請求項5に記載の保護膜。
- 170~800nmの波長の光により硬化した、請求項5に記載の保護膜。
- ウエハ端部が保護された半導体製造用ウエハであって、ウエハ前駆体の端部に、請求項1~4何れか1項に記載の保護膜形成組成物を塗布して形成した、半導体製造用ウエハ。
- (A) 半導体基板上にレジスト膜を形成する工程と、
(B) レジスト膜に対する光又は電子線の照射とその後の現像によりレジストパターンを形成する工程と、
(C) 半導体基板をエッチングで加工する工程と、
を含む半導体装置の製造方法において、
半導体製造用ウエハの表面端部と、任意選択的にベベル部及び/又は裏面端部に、
請求項1~4何れか1項に記載の保護膜形成組成物からの保護膜を形成する工程(X)
を含む、
半導体装置の製造方法。 - 工程(A)の前に工程(X)を含む、請求項10に記載の半導体装置の製造方法。
- 工程(A)と工程(B)との間に工程(X)を含む、請求項10に記載の半導体装置の製造方法。
- 工程(B)又は工程(C)の後に工程(X)を含む、請求項10に記載の半導体装置の製造方法。
- 工程(X)の後に、前記保護膜の上の部分のレジスト膜を除去する工程(Y)を含む、請求項10に記載の半導体装置の製造方法。
- 工程(X)の後に、前記保護膜を除去する工程(Z)を含む、請求項10に記載の半導体装置の製造方法。
- 工程(Y)の後に、前記保護膜を除去する工程(Z)を含む、請求項14に記載の半導体装置の製造方法。
- 前記レジスト膜が金属を含む、請求項10に記載の半導体装置の製造方法。
- 前記工程(X)において、請求項4に記載の保護膜形成組成物を塗布し、所定の領域に露光、現像を行う、請求項10に記載の半導体装置の製造方法。
- 工程(Z)をアッシング、又はフッ化水素酸、有機溶剤、アルカリ現像液、若しくは半導体用洗浄液による処理により行う、請求項15に記載の半導体装置の製造方法。
- 工程(Z)をアッシング、又はフッ化水素酸、有機溶剤、アルカリ現像液、若しくは半導体用洗浄液による処理により行う、請求項16に記載の半導体装置の製造方法。
- 半導体製造用ウエハの製造方法であって、
ウエハ前駆体の端部に、請求項1~4何れか1項に記載の保護膜形成用組成物を塗布し、前記端部が保護されたウエハを製造する工程、
を含む、半導体製造用ウエハの製造方法。
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EP22864676.6A EP4398035A1 (en) | 2021-09-02 | 2022-09-01 | Wafer edge protective-film-forming composition for semiconductor manufacturing |
JP2023545669A JPWO2023033094A1 (ja) | 2021-09-02 | 2022-09-01 | |
CN202280059405.5A CN117940849A (zh) | 2021-09-02 | 2022-09-01 | 半导体制造用晶片端部保护膜形成组合物 |
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Citations (6)
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WO2009104643A1 (ja) | 2008-02-20 | 2009-08-27 | 日産化学工業株式会社 | 光硬化膜形成組成物及び光硬化膜形成方法 |
JP2011228340A (ja) | 2010-04-15 | 2011-11-10 | Elpida Memory Inc | 半導体装置の製造方法 |
JP2014045171A (ja) * | 2012-08-02 | 2014-03-13 | Tokyo Electron Ltd | 塗布処理方法及び塗布処理装置 |
JP2016003160A (ja) | 2014-06-17 | 2016-01-12 | 日産化学工業株式会社 | ガラス保護膜形成用組成物及びガラス保護膜 |
JP2017098333A (ja) | 2015-11-19 | 2017-06-01 | 東京エレクトロン株式会社 | 基板処理方法 |
WO2018190380A1 (ja) | 2017-04-14 | 2018-10-18 | 日産化学株式会社 | 炭素原子間の不飽和結合によるプラズマ硬化性化合物を含む段差基板被覆膜形成組成物 |
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- 2022-09-01 KR KR1020247010865A patent/KR20240055047A/ko unknown
- 2022-09-01 CN CN202280059405.5A patent/CN117940849A/zh active Pending
- 2022-09-01 WO PCT/JP2022/032897 patent/WO2023033094A1/ja active Application Filing
- 2022-09-01 JP JP2023545669A patent/JPWO2023033094A1/ja active Pending
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2009104643A1 (ja) | 2008-02-20 | 2009-08-27 | 日産化学工業株式会社 | 光硬化膜形成組成物及び光硬化膜形成方法 |
JP2011228340A (ja) | 2010-04-15 | 2011-11-10 | Elpida Memory Inc | 半導体装置の製造方法 |
JP2014045171A (ja) * | 2012-08-02 | 2014-03-13 | Tokyo Electron Ltd | 塗布処理方法及び塗布処理装置 |
JP2016003160A (ja) | 2014-06-17 | 2016-01-12 | 日産化学工業株式会社 | ガラス保護膜形成用組成物及びガラス保護膜 |
JP2017098333A (ja) | 2015-11-19 | 2017-06-01 | 東京エレクトロン株式会社 | 基板処理方法 |
WO2018190380A1 (ja) | 2017-04-14 | 2018-10-18 | 日産化学株式会社 | 炭素原子間の不飽和結合によるプラズマ硬化性化合物を含む段差基板被覆膜形成組成物 |
Non-Patent Citations (1)
Title |
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PROC. SPIE, vol. 3999, 2000, pages 365 - 374 |
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TW202321337A (zh) | 2023-06-01 |
CN117940849A (zh) | 2024-04-26 |
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