WO2004049417A1 - 研磨パッド及び半導体デバイスの製造方法 - Google Patents
研磨パッド及び半導体デバイスの製造方法 Download PDFInfo
- Publication number
- WO2004049417A1 WO2004049417A1 PCT/JP2003/015128 JP0315128W WO2004049417A1 WO 2004049417 A1 WO2004049417 A1 WO 2004049417A1 JP 0315128 W JP0315128 W JP 0315128W WO 2004049417 A1 WO2004049417 A1 WO 2004049417A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- polishing
- polishing pad
- region
- light
- light transmitting
- Prior art date
Links
- 238000005498 polishing Methods 0.000 title claims abstract description 382
- 238000004519 manufacturing process Methods 0.000 title claims description 57
- 239000004065 semiconductor Substances 0.000 title claims description 25
- 238000000034 method Methods 0.000 title description 86
- 238000002834 transmittance Methods 0.000 claims abstract description 65
- 230000002093 peripheral effect Effects 0.000 claims abstract description 12
- 239000006260 foam Substances 0.000 claims description 51
- 230000005540 biological transmission Effects 0.000 claims description 50
- 239000000463 material Substances 0.000 claims description 35
- 229920005749 polyurethane resin Polymers 0.000 claims description 34
- 229920005862 polyol Polymers 0.000 claims description 28
- 150000003077 polyols Chemical class 0.000 claims description 28
- 230000006835 compression Effects 0.000 claims description 23
- 238000007906 compression Methods 0.000 claims description 23
- 230000008859 change Effects 0.000 claims description 15
- 239000004970 Chain extender Substances 0.000 claims description 14
- 239000012948 isocyanate Substances 0.000 claims description 14
- 150000002513 isocyanates Chemical class 0.000 claims description 13
- 230000005484 gravity Effects 0.000 claims description 12
- 238000011084 recovery Methods 0.000 claims description 12
- 238000003860 storage Methods 0.000 claims description 9
- 239000000126 substance Substances 0.000 claims description 9
- 239000007788 liquid Substances 0.000 claims description 4
- 230000003287 optical effect Effects 0.000 abstract description 14
- 238000007517 polishing process Methods 0.000 abstract description 2
- 235000012431 wafers Nutrition 0.000 description 87
- 239000010410 layer Substances 0.000 description 62
- 238000001514 detection method Methods 0.000 description 43
- 238000005259 measurement Methods 0.000 description 30
- -1 polytetrafluoroethylene Polymers 0.000 description 29
- 238000003756 stirring Methods 0.000 description 29
- 239000000203 mixture Substances 0.000 description 19
- 238000006243 chemical reaction Methods 0.000 description 17
- 230000007423 decrease Effects 0.000 description 17
- 229920005989 resin Polymers 0.000 description 17
- 239000011347 resin Substances 0.000 description 17
- 239000002002 slurry Substances 0.000 description 17
- 229920002635 polyurethane Polymers 0.000 description 15
- 239000004814 polyurethane Substances 0.000 description 15
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 14
- WERYXYBDKMZEQL-UHFFFAOYSA-N butane-1,4-diol Chemical compound OCCCCO WERYXYBDKMZEQL-UHFFFAOYSA-N 0.000 description 14
- 239000007789 gas Substances 0.000 description 13
- 238000011156 evaluation Methods 0.000 description 12
- 239000004745 nonwoven fabric Substances 0.000 description 11
- 229920001296 polysiloxane Polymers 0.000 description 10
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 9
- 230000000704 physical effect Effects 0.000 description 9
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 8
- 239000004698 Polyethylene Substances 0.000 description 8
- 239000000853 adhesive Substances 0.000 description 8
- 230000001070 adhesive effect Effects 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 8
- 229910052731 fluorine Inorganic materials 0.000 description 8
- 239000011737 fluorine Substances 0.000 description 8
- 238000010030 laminating Methods 0.000 description 8
- 238000002156 mixing Methods 0.000 description 8
- 229920000573 polyethylene Polymers 0.000 description 8
- 238000003825 pressing Methods 0.000 description 8
- 239000000243 solution Substances 0.000 description 8
- 150000001875 compounds Chemical class 0.000 description 7
- 239000006185 dispersion Substances 0.000 description 7
- 229920005906 polyester polyol Polymers 0.000 description 7
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 6
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 238000005187 foaming Methods 0.000 description 6
- 238000002360 preparation method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 230000001007 puffing effect Effects 0.000 description 6
- 229910052710 silicon Inorganic materials 0.000 description 6
- 239000010703 silicon Substances 0.000 description 6
- UPMLOUAZCHDJJD-UHFFFAOYSA-N 4,4'-Diphenylmethane Diisocyanate Chemical compound C1=CC(N=C=O)=CC=C1CC1=CC=C(N=C=O)C=C1 UPMLOUAZCHDJJD-UHFFFAOYSA-N 0.000 description 5
- 239000004721 Polyphenylene oxide Substances 0.000 description 5
- 229920005830 Polyurethane Foam Polymers 0.000 description 5
- 239000012790 adhesive layer Substances 0.000 description 5
- 239000004927 clay Substances 0.000 description 5
- 238000005520 cutting process Methods 0.000 description 5
- 230000007246 mechanism Effects 0.000 description 5
- 239000002245 particle Substances 0.000 description 5
- 229920000570 polyether Polymers 0.000 description 5
- 239000011496 polyurethane foam Substances 0.000 description 5
- 239000004094 surface-active agent Substances 0.000 description 5
- IBOFVQJTBBUKMU-UHFFFAOYSA-N 4,4'-methylene-bis-(2-chloroaniline) Chemical compound C1=C(Cl)C(N)=CC=C1CC1=CC=C(N)C(Cl)=C1 IBOFVQJTBBUKMU-UHFFFAOYSA-N 0.000 description 4
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 229920000728 polyester Polymers 0.000 description 4
- YPFDHNVEDLHUCE-UHFFFAOYSA-N propane-1,3-diol Chemical compound OCCCO YPFDHNVEDLHUCE-UHFFFAOYSA-N 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- UWIULCYKVGIOPW-UHFFFAOYSA-N Glycolone Natural products CCOC1=C(CC=CC)C(=O)N(C)c2c(O)cccc12 UWIULCYKVGIOPW-UHFFFAOYSA-N 0.000 description 3
- 235000019687 Lamb Nutrition 0.000 description 3
- 239000004743 Polypropylene Substances 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 3
- 239000001361 adipic acid Substances 0.000 description 3
- 235000011037 adipic acid Nutrition 0.000 description 3
- 238000000149 argon plasma sintering Methods 0.000 description 3
- 239000003054 catalyst Substances 0.000 description 3
- ZZTCPWRAHWXWCH-UHFFFAOYSA-N diphenylmethanediamine Chemical compound C=1C=CC=CC=1C(N)(N)C1=CC=CC=C1 ZZTCPWRAHWXWCH-UHFFFAOYSA-N 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 125000000524 functional group Chemical group 0.000 description 3
- 229910052736 halogen Inorganic materials 0.000 description 3
- 150000002367 halogens Chemical class 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- ACCCMOQWYVYDOT-UHFFFAOYSA-N hexane-1,1-diol Chemical compound CCCCCC(O)O ACCCMOQWYVYDOT-UHFFFAOYSA-N 0.000 description 3
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 229920000768 polyamine Polymers 0.000 description 3
- 229920001225 polyester resin Polymers 0.000 description 3
- 239000004645 polyester resin Substances 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- 229920001155 polypropylene Polymers 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 230000000007 visual effect Effects 0.000 description 3
- VOZKAJLKRJDJLL-UHFFFAOYSA-N 2,4-diaminotoluene Chemical compound CC1=CC=C(N)C=C1N VOZKAJLKRJDJLL-UHFFFAOYSA-N 0.000 description 2
- RLYCRLGLCUXUPO-UHFFFAOYSA-N 2,6-diaminotoluene Chemical compound CC1=C(N)C=CC=C1N RLYCRLGLCUXUPO-UHFFFAOYSA-N 0.000 description 2
- WTPYFJNYAMXZJG-UHFFFAOYSA-N 2-[4-(2-hydroxyethoxy)phenoxy]ethanol Chemical compound OCCOC1=CC=C(OCCO)C=C1 WTPYFJNYAMXZJG-UHFFFAOYSA-N 0.000 description 2
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- OTMSDBZUPAUEDD-UHFFFAOYSA-N Ethane Chemical compound CC OTMSDBZUPAUEDD-UHFFFAOYSA-N 0.000 description 2
- 239000002033 PVDF binder Substances 0.000 description 2
- 239000004793 Polystyrene Substances 0.000 description 2
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 125000003277 amino group Chemical group 0.000 description 2
- 230000002238 attenuated effect Effects 0.000 description 2
- HFACYLZERDEVSX-UHFFFAOYSA-N benzidine Chemical group C1=CC(N)=CC=C1C1=CC=C(N)C=C1 HFACYLZERDEVSX-UHFFFAOYSA-N 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- 238000003851 corona treatment Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 125000005442 diisocyanate group Chemical group 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 238000007542 hardness measurement Methods 0.000 description 2
- XXMIOPMDWAUFGU-UHFFFAOYSA-N hexane-1,6-diol Chemical compound OCCCCCCO XXMIOPMDWAUFGU-UHFFFAOYSA-N 0.000 description 2
- 230000001771 impaired effect Effects 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- HJOVHMDZYOCNQW-UHFFFAOYSA-N isophorone Chemical compound CC1=CC(=O)CC(C)(C)C1 HJOVHMDZYOCNQW-UHFFFAOYSA-N 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 229910021645 metal ion Inorganic materials 0.000 description 2
- 125000002816 methylsulfanyl group Chemical group [H]C([H])([H])S[*] 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 239000002736 nonionic surfactant Substances 0.000 description 2
- 238000000206 photolithography Methods 0.000 description 2
- 229920006122 polyamide resin Polymers 0.000 description 2
- 229920001610 polycaprolactone Polymers 0.000 description 2
- 239000004632 polycaprolactone Substances 0.000 description 2
- 229920005668 polycarbonate resin Polymers 0.000 description 2
- 239000004431 polycarbonate resin Substances 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 229920001228 polyisocyanate Polymers 0.000 description 2
- 239000005056 polyisocyanate Substances 0.000 description 2
- 229920002223 polystyrene Polymers 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 239000004800 polyvinyl chloride Substances 0.000 description 2
- 229920000915 polyvinyl chloride Polymers 0.000 description 2
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 2
- 238000011417 postcuring Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000005060 rubber Substances 0.000 description 2
- 238000007790 scraping Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000003746 surface roughness Effects 0.000 description 2
- 238000004381 surface treatment Methods 0.000 description 2
- DVKJHBMWWAPEIU-UHFFFAOYSA-N toluene 2,4-diisocyanate Chemical compound CC1=CC=C(N=C=O)C=C1N=C=O DVKJHBMWWAPEIU-UHFFFAOYSA-N 0.000 description 2
- RTTZISZSHSCFRH-UHFFFAOYSA-N 1,3-bis(isocyanatomethyl)benzene Chemical compound O=C=NCC1=CC=CC(CN=C=O)=C1 RTTZISZSHSCFRH-UHFFFAOYSA-N 0.000 description 1
- VGHSXKTVMPXHNG-UHFFFAOYSA-N 1,3-diisocyanatobenzene Chemical compound O=C=NC1=CC=CC(N=C=O)=C1 VGHSXKTVMPXHNG-UHFFFAOYSA-N 0.000 description 1
- OHLKMGYGBHFODF-UHFFFAOYSA-N 1,4-bis(isocyanatomethyl)benzene Chemical compound O=C=NCC1=CC=C(CN=C=O)C=C1 OHLKMGYGBHFODF-UHFFFAOYSA-N 0.000 description 1
- CDMDQYCEEKCBGR-UHFFFAOYSA-N 1,4-diisocyanatocyclohexane Chemical compound O=C=NC1CCC(N=C=O)CC1 CDMDQYCEEKCBGR-UHFFFAOYSA-N 0.000 description 1
- CBCKQZAAMUWICA-UHFFFAOYSA-N 1,4-phenylenediamine Chemical compound NC1=CC=C(N)C=C1 CBCKQZAAMUWICA-UHFFFAOYSA-N 0.000 description 1
- SBJCUZQNHOLYMD-UHFFFAOYSA-N 1,5-Naphthalene diisocyanate Chemical compound C1=CC=C2C(N=C=O)=CC=CC2=C1N=C=O SBJCUZQNHOLYMD-UHFFFAOYSA-N 0.000 description 1
- BRPSAOUFIJSKOT-UHFFFAOYSA-N 2,3-dichloroaniline Chemical compound NC1=CC=CC(Cl)=C1Cl BRPSAOUFIJSKOT-UHFFFAOYSA-N 0.000 description 1
- PISLZQACAJMAIO-UHFFFAOYSA-N 2,4-diethyl-6-methylbenzene-1,3-diamine Chemical compound CCC1=CC(C)=C(N)C(CC)=C1N PISLZQACAJMAIO-UHFFFAOYSA-N 0.000 description 1
- HQCHAOKWWKLXQH-UHFFFAOYSA-N 2,6-Dichloro-para-phenylenediamine Chemical compound NC1=CC(Cl)=C(N)C(Cl)=C1 HQCHAOKWWKLXQH-UHFFFAOYSA-N 0.000 description 1
- VZSRBBMJRBPUNF-UHFFFAOYSA-N 2-(2,3-dihydro-1H-inden-2-ylamino)-N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]pyrimidine-5-carboxamide Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C(=O)NCCC(N1CC2=C(CC1)NN=N2)=O VZSRBBMJRBPUNF-UHFFFAOYSA-N 0.000 description 1
- BSESQBBHCKBEIW-UHFFFAOYSA-N 2-amino-4-[(3-amino-4-carboxyphenyl)methyl]benzoic acid Chemical compound C1=C(C(O)=O)C(N)=CC(CC=2C=C(N)C(C(O)=O)=CC=2)=C1 BSESQBBHCKBEIW-UHFFFAOYSA-N 0.000 description 1
- SXFJDZNJHVPHPH-UHFFFAOYSA-N 3-methylpentane-1,5-diol Chemical compound OCCC(C)CCO SXFJDZNJHVPHPH-UHFFFAOYSA-N 0.000 description 1
- YBRVSVVVWCFQMG-UHFFFAOYSA-N 4,4'-diaminodiphenylmethane Chemical compound C1=CC(N)=CC=C1CC1=CC=C(N)C=C1 YBRVSVVVWCFQMG-UHFFFAOYSA-N 0.000 description 1
- ALYNCZNDIQEVRV-UHFFFAOYSA-M 4-aminobenzoate Chemical compound NC1=CC=C(C([O-])=O)C=C1 ALYNCZNDIQEVRV-UHFFFAOYSA-M 0.000 description 1
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 101100366707 Arabidopsis thaliana SSL11 gene Proteins 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- KMTRUDSVKNLOMY-UHFFFAOYSA-N Ethylene carbonate Chemical class O=C1OCCO1 KMTRUDSVKNLOMY-UHFFFAOYSA-N 0.000 description 1
- 239000005057 Hexamethylene diisocyanate Substances 0.000 description 1
- AFCARXCZXQIEQB-UHFFFAOYSA-N N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CCNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 AFCARXCZXQIEQB-UHFFFAOYSA-N 0.000 description 1
- 101100366562 Panax ginseng SS12 gene Proteins 0.000 description 1
- ALQSHHUCVQOPAS-UHFFFAOYSA-N Pentane-1,5-diol Chemical compound OCCCCCO ALQSHHUCVQOPAS-UHFFFAOYSA-N 0.000 description 1
- 239000005062 Polybutadiene Substances 0.000 description 1
- YIMQCDZDWXUDCA-UHFFFAOYSA-N [4-(hydroxymethyl)cyclohexyl]methanol Chemical compound OCC1CCC(CO)CC1 YIMQCDZDWXUDCA-UHFFFAOYSA-N 0.000 description 1
- 239000006061 abrasive grain Substances 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 239000003522 acrylic cement Substances 0.000 description 1
- 239000012190 activator Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 125000002947 alkylene group Chemical group 0.000 description 1
- 229940064734 aminobenzoate Drugs 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 239000002216 antistatic agent Substances 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 125000002029 aromatic hydrocarbon group Chemical group 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 235000013527 bean curd Nutrition 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- UBAZGMLMVVQSCD-UHFFFAOYSA-N carbon dioxide;molecular oxygen Chemical compound O=O.O=C=O UBAZGMLMVVQSCD-UHFFFAOYSA-N 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- DIWSMVWJOBILHY-UHFFFAOYSA-N cyclohexane-1,1-dicarbaldehyde Chemical compound O=CC1(C=O)CCCCC1 DIWSMVWJOBILHY-UHFFFAOYSA-N 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- ZFTFAPZRGNKQPU-UHFFFAOYSA-N dicarbonic acid Chemical compound OC(=O)OC(O)=O ZFTFAPZRGNKQPU-UHFFFAOYSA-N 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 239000000499 gel Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 150000002334 glycols Chemical class 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- RRAMGCGOFNQTLD-UHFFFAOYSA-N hexamethylene diisocyanate Chemical compound O=C=NCCCCCCN=C=O RRAMGCGOFNQTLD-UHFFFAOYSA-N 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 229920003049 isoprene rubber Polymers 0.000 description 1
- 230000031700 light absorption Effects 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 230000015654 memory Effects 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- FSWDLYNGJBGFJH-UHFFFAOYSA-N n,n'-di-2-butyl-1,4-phenylenediamine Chemical compound CCC(C)NC1=CC=C(NC(C)CC)C=C1 FSWDLYNGJBGFJH-UHFFFAOYSA-N 0.000 description 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000000059 patterning Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 229920002857 polybutadiene Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 229920013716 polyethylene resin Polymers 0.000 description 1
- 239000004848 polyfunctional curative Substances 0.000 description 1
- 239000002952 polymeric resin Substances 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 239000011541 reaction mixture Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 150000005846 sugar alcohols Polymers 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
- 150000003512 tertiary amines Chemical class 0.000 description 1
- RUELTTOHQODFPA-UHFFFAOYSA-N toluene 2,6-diisocyanate Chemical compound CC1=C(N=C=O)C=CC=C1N=C=O RUELTTOHQODFPA-UHFFFAOYSA-N 0.000 description 1
- 238000005809 transesterification reaction Methods 0.000 description 1
- ZIBGPFATKBEMQZ-UHFFFAOYSA-N triethylene glycol Chemical compound OCCOCCOCCO ZIBGPFATKBEMQZ-UHFFFAOYSA-N 0.000 description 1
- 125000003258 trimethylene group Chemical group [H]C([H])([*:2])C([H])([H])C([H])([H])[*:1] 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- 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
- H01L21/302—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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B37/00—Lapping machines or devices; Accessories
- B24B37/11—Lapping tools
- B24B37/20—Lapping pads for working plane surfaces
- B24B37/205—Lapping pads for working plane surfaces provided with a window for inspecting the surface of the work being lapped
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B37/00—Lapping machines or devices; Accessories
- B24B37/005—Control means for lapping machines or devices
- B24B37/013—Devices or means for detecting lapping completion
Definitions
- the present invention relates to a polishing pad used for flattening irregularities on a wafer surface by chemical mechanical polishing (CMP). More specifically, the present invention relates to a polishing pad having a window for detecting a polishing state or the like by optical means, And a method for manufacturing a semiconductor device using the polishing pad.
- CMP chemical mechanical polishing
- a conductive film is formed on the wafer surface, and a wiring layer is formed by photolithography, etching, and the like, and an interlayer insulating film is formed on the wiring layer. Steps and the like are performed, and these steps generate irregularities made of a conductor or an insulator such as a metal on the wafer surface.
- miniaturization of wiring and multi-layer wiring have been promoted for the purpose of increasing the density of semiconductor integrated circuits. With this trend, technology for flattening irregularities on the wafer surface has become important.
- CMP is a technology in which a wafer is polished using a slurry-type abrasive (hereinafter referred to as slurry) in which abrasive grains are dispersed while the surface to be polished is pressed against the polishing surface of a polishing pad.
- slurry slurry-type abrasive
- a polishing apparatus generally used in CMP includes a polishing table 2 that supports a polishing pad 1 and a support table (a polishing table) that supports an object (wafer) 4 to be polished. Equipped with a packing material for uniform pressurization of 5 and wafer, and an abrasive supply mechanism.
- the polishing pad 1 is attached to the polishing platen 2 by, for example, attaching with a double-sided tape.
- the polishing platen 2 and the support table 5 are arranged so that the polishing pad 1 and the object 4 to be polished respectively supported are opposed to each other. Equipped with turning shafts 6 and 7.
- the support 5 is provided with a pressing mechanism for pressing the object 4 to be polished against the polishing pad 1.
- the proposed detection methods include:
- Torque detection method that detects the coefficient of friction between the wafer and the pad as a change in the rotational torque of the wafer holding head / platen (US Pat. No. 5,069,002)
- the optical detection means which is the method of (3), specifically irradiates a wafer with a light beam through a window (light transmission area) through a polishing pad and monitors an interference signal generated by the reflection. This is a method of detecting the end point of polishing (Fig. 12).
- a light beam He-Ne laser light having a wavelength of about 600 nm or white light using a halogen lamp having a wavelength of 380 to 800 nm is generally used.
- the end point is determined by monitoring the change in thickness of the surface layer of the wafer and knowing the approximate depth of the surface convexity. When the change in thickness becomes equal to the depth of the unevenness, the CMP process is terminated.
- various methods have been proposed for the polishing end point detection method using such optical means and polishing pads used in the method.
- Polishing pad having at least a portion of the transparent polymer sheet that transmits wavelength light of 3500 nm from a homogeneous 1 90 nm in a solid is disclosed (Kohyo 11 512 977 JP) D Further, a stepped transparent plug There is disclosed a polishing pad in which the pressure is introduced (Japanese Patent Application Laid-Open No. 9-17985). Further, a polishing pad having a transparent plug on the same surface as the polishing surface has been disclosed (Japanese Patent Application Laid-Open No. 10-83977).
- the light-transmitting member contains a water-insoluble matrix material and water-soluble particles dispersed in the water-insoluble matrix material, and the light transmittance of 400 to 800 is 0.1% or more.
- Certain polishing pads have been disclosed (JP-A-2002-324769, JP-A-2002-324770). It is disclosed that any of them is used as a window for detecting an end point.
- He-Ne laser light or white light using a halogen lamp is used as the light beam.
- white light When white light is used, light of various wavelengths is applied to the wafer. The advantage is that many wafer surface profiles can be obtained.
- this white light is used as a light beam, it is necessary to increase the detection accuracy in a wide wavelength range. Later, in the high integration of semiconductor manufacturing-ultra-compact size, the wiring width of the integrated circuit is expected to become smaller and smaller. In this case, high-precision optical end point detection is required, but conventional end point detection windows do not have sufficiently high accuracy over a wide wavelength range.
- the first invention enables a highly accurate optical end point detection while polishing is being performed, thereby providing a polishing pad excellent in polishing characteristics (surface uniformity, etc.), and a semiconductor device using the polishing pad. It is intended to provide a manufacturing method. .
- the second invention makes it possible to detect an optical end point with high accuracy while polishing is being performed, and in particular, a semiconductor laser having a He—Ne laser beam or an emission wavelength near 600 to 700 nm.
- An object of the present invention is to provide a polishing pad which is suitably used in a polishing apparatus using the same, and thereby has excellent polishing characteristics (surface uniformity, etc.).
- Another object of the present invention is to provide a polishing pad that can be easily and inexpensively manufactured, and to provide a method for manufacturing a semiconductor device using the polishing pad.
- the window (light transmission area) described in the above-mentioned patent document is a polishing pad having a shape long in the circumferential direction or a circular shape as shown in FIGS.
- the window is concentrated on only a certain portion of the wafer when polishing the wafer, so that the polishing is not uniform between the portion where the window contacts and the portion where the window does not contact.
- Another problem is that only a limited portion of the polishing profile in contact with the window can be obtained.
- a third aspect of the present invention is a polishing pad that enables high-precision optical end point detection while polishing is being performed, has excellent polishing characteristics (particularly in-plane uniformity), and can obtain a polishing profile of a wide range of wafers. It is another object of the present invention to provide a method for manufacturing a semiconductor device using the polishing pad. Disclosure of the invention
- the present inventor has conducted intensive studies, and as a result, by using a light transmitting region having a specific light transmittance as a light transmitting region for a polishing pad, the above-described problem has been solved. We found that we could solve it.
- the first present invention is used for chemical mechanical polishing, and is a polishing pad having a polishing region and a light transmitting region, wherein the entire region of the light transmitting region having a wavelength of 400 to 700 m is provided. Characterized by a light transmittance of 50% or more at About
- the light transmitting region preferably has a light transmittance change rate of 50 ° / 0 or less at a wavelength of 400 to 700 nm represented by the following formula.
- Rate of change (%) ⁇ (maximum light transmittance at 400 to 700 nm-minimum light transmittance at 400 to 700 nm) / maximum light transmittance at 400 to 700 nm ⁇ X 100
- the degree of light transmittance at the wavelength of the measurement light used is important in determining the accuracy of detection of the polishing end point and the measurement accuracy of the film thickness.
- the light transmission region according to the first aspect of the present invention has a small attenuation of light transmittance on the short wavelength side, and can maintain high detection accuracy over a wide wavelength range.
- the light transmitting region used in the polishing pad of the first present invention has a light transmittance of 50% or more, preferably 70 ° / 0 or more, in the entire wavelength range of 400 to 700 nm. is there . Light transmittance is less than 50%! In some cases, during polishing, the intensity of light passing through the light transmitting area is greatly attenuated due to the effect of the slurry layer and the effects of dressing marks, and the accuracy of detecting the end point of polishing and the accuracy of measuring the film thickness decrease. I do.
- the rate of change of the light transmittance in the light transmission region at a wavelength of 400 to 700 nm represented by the above equation is more preferably 30% or less. If the rate of change of the light transmittance exceeds 50%, the intensity of light passing through the light transmission region on the short wavelength side is greatly attenuated, and the amplitude of the interference light is reduced, so that the detection accuracy of the polishing end point is reduced. And the measurement accuracy of film thickness tends to decrease.
- the light transmittance of the light transmitting region at a wavelength of 400 nm is preferably 70% or more.
- the detection accuracy of the polishing end point and the measurement accuracy of the film thickness can be further increased.
- the light transmittance in the entire region of the light transmission region having a wavelength of 500 to 700 nm is preferably 90% or more, more preferably 95% or more.
- the difference in light transmittance between wavelengths 500 and 700 is preferably within 5%, more preferably within 3%. If the difference in light transmittance at each wavelength is within 5%, it is possible to irradiate the wafer with constant incident light and calculate the accurate reflectance when analyzing the film thickness of the wafer. Detection accuracy can be improved.
- a second aspect of the present invention is a polishing pad used for chemical mechanical polishing, having a polishing area and a light transmitting area, wherein the thickness of the light transmitting area is 0.5 to 4 mm, and
- the present invention relates to a polishing pad characterized by having a light transmittance of 80% or more in the entire wavelength region of 600 to 700 nm.
- the generally used polishing apparatus uses a laser having detection light having a transmission wavelength in the vicinity of 600 to 700 nm, so that the light transmittance in the wavelength region is 80% or more.
- the light transmittance in the wavelength region is 80% or more.
- the film thickness detection accuracy can be improved. If the light transmittance is less than 80%, the reflected light tends to be small, and the film thickness detection accuracy tends to decrease.
- the light transmittance of the entire light transmission region having a wavelength of 600 to 700 nm is 90% or more.
- the light transmittance of the light transmitting region in the first and second aspects of the present invention is a value when the thickness of the light transmitting region is 1 mm or a value when converted to a thickness of 1 mm.
- the light transmittance varies depending on the thickness of the light transmission region according to the law of Lamb e r t-B e r. Since the light transmittance decreases as the thickness increases, the light transmittance at a constant thickness is calculated. .
- a third aspect of the present invention is a polishing pad used for chemical mechanical polishing and having a polishing region and a light transmitting region, wherein the light transmitting region is located between a central portion and a peripheral end portion of the polishing pad.
- the polishing pad is provided, wherein the length (D) in the diameter direction is at least three times the length (L) in the circumferential direction.
- the wafer is polished when polishing the wafer.
- the light-transmitting region does not concentrate on only a part of the wafer, and contacts the entire surface of the wafer evenly, so that the wafer can be polished uniformly and the polishing characteristics are improved. be able to.
- a polishing profile of a wide range of wafers can be obtained by appropriately moving the laser interferometer in the diameter direction within a range having a light transmission region during polishing, so that the end point of the polishing process can be accurately and easily determined. It will be possible.
- the length (D) in the diameter direction refers to the length of a portion passing through the center of gravity of the light transmitting region and overlapping a straight line connecting the center of the polishing pad and the peripheral end with the light transmitting region.
- the length in the circumferential direction (L) is defined as the portion where the straight line passing through the center of gravity of the light transmitting region and orthogonal to the straight line connecting the center of the polishing pad and the peripheral edge and the light transmitting region is the largest. Refers to the length.
- the light transmitting region is provided between the central portion and the peripheral edge of the polishing pad. Since the diameter of the wafer is generally smaller than the radius of the polishing pad, it is sufficient to provide a light-transmitting region between the center and the peripheral edge of the polishing pad to obtain a polishing profile for a wide range of wafers. However, it is not preferable to make the light transmitting region longer than the radius of the polishing pad or approximately the same as the diameter of the polishing pad, because the polishing region is reduced and the polishing efficiency is reduced.
- the length in the diameter direction of the light transmitting region when the length (D) in the diameter direction of the light transmitting region is less than three times the length (L) in the circumferential direction, the length in the diameter direction is not sufficient, Since the portion where the light beam can be irradiated on the wafer is limited to a certain range, it is insufficient for detecting the film thickness of the wafer. If the length in the diametric direction is made sufficiently long, the length (L) in the circumferential direction will also increase. The polishing efficiency tends to decrease because the polishing area increases and the polishing area decreases.
- the shape of the light transmitting region is rectangular from the viewpoint of easy manufacture.
- the length (D) of the light transmitting region in the diameter direction is 1Z4-1 to 2 times the diameter of the object to be polished. If the ratio is less than 1/4, the portion where the light beam can be irradiated to the object to be polished (such as a wafer) is limited to a certain range, and the film thickness of the wafer is insufficiently detected or the polishing is not uniform. Tend to be. On the other hand, if it exceeds 1/2, the polishing area tends to decrease, and the polishing efficiency tends to decrease.
- at least one light transmitting region may be provided in the polishing pad, but two or more light transmitting regions may be provided.
- the thickness variation of the light transmitting region is preferably 100 m or less.
- the material for forming the polishing region and the light transmitting region is preferably a polyurethane resin. preferable. Further, it is preferable that the polyurethane resin which is a material for forming the polishing region and the polyurethane resin which is a material for forming the light transmitting region contain the same kind of organic isocyanate, polyol, and chain extender. Les ,.
- the dressing amount can be made approximately the same when the polishing pad is dressed, thereby achieving high flatness over the entire polishing pad. Can be.
- the polishing pad is not made of the same material, the dressing amount is different, and the flatness of the polishing pad tends to be impaired. In that case, it is preferable to adjust the hardness and the dressing amount of the polishing region and the light transmitting region to the same level.
- the material for forming the light transmitting region is preferably a non-foamed body.
- a non-foamed body In the case of a non-foamed body, light scattering can be suppressed, so that accurate reflectance can be detected, and the detection accuracy of the optical end point of polishing can be increased. It is preferable not to have a concavo-convex structure for holding and renewing the polishing liquid. If the polishing side surface of the light transmission area has a rough surface, slurry containing additives such as abrasive particles accumulates in the area, scattering and absorption of light will occur, which will affect the detection accuracy It is in. Further, it is preferable that the other surface on the other side of the light transmitting region also has no macro surface unevenness. If there are macroscopic surface irregularities, light scattering is likely to occur, which may affect detection accuracy.
- the material for forming the polishing region is a fine foam.
- a groove is provided on a polishing-side surface of the polishing area.
- the average cell diameter of the fine foam is preferably 70 ⁇ m or less, more preferably 50 ⁇ m or less. If the average bubble diameter is 70 ⁇ m or less, the planarity (flatness) is good.
- the specific gravity of the fine foam is preferably 0.5 to 1.0 Og / cm 3 , more preferably 0.7 to 0.9 g / cm 3 . When the specific gravity is less than 0. 5 gZc m 3, the strength of the surface of the polishing region is decreased, and decreases Buranariti the object to be polished, also, 1. O gZcm 3 larger than the fine surface of the polishing region The number of bubbles is reduced and the planarity is good, but the polishing rate tends to be low.
- the hardness of the fine foam is preferably 45 to 65 degrees, more preferably 45 to 60 degrees in Asker D hardness.
- ASKER D hardness is less than 45 degrees, the planarity of the object to be polished is reduced.
- the hardness is more than 65 degrees, the planarity is good, but the uniformity of the object to be polished is reduced. There is a tendency.
- the compression ratio of the fine foam is preferably 0.5 to 5.0%, more preferably 0.5 to 3.0%. If the compression ratio is within the above range, it is possible to sufficiently satisfy both planarity and ⁇ niformity.
- the compression ratio is a value calculated by the following equation.
- T 1 Thickness of the fine foam when a load of 30 KPa (300 gcm 2 ) stress is maintained for 60 seconds from no load on the fine foam
- T 2 Thickness of the fine foam when a load of 180 KPa (1800 g / cm 2 ) is maintained for 60 seconds from the state of T 1.
- the compression recovery rate of the fine foam is 50 to 100%. More preferably, it is 60 to 100%. If it is less than 50%, as the repeated load is applied to the polishing area during polishing, a large change in the thickness of the polishing area appears, and the stability of the polishing characteristics tends to decrease.
- the compression recovery rate is a value calculated by the following formula.
- Compression recovery rate (%) ⁇ (T3—T2) / (T1—T2) ⁇ X100
- T 1 Thickness of the fine foam when a load of 30 KPa (300 g / cm 2 ) stress is maintained for 60 seconds from no load to the fine foam
- T 2 Thickness of fine foam when holding a stress load of 18 OKPa (1800 g / cm 2 ) for 60 seconds from the state of T 1
- T3 Thickness of the fine foam when holding a load of 30 KPa (300 g / cm 2 ) for 60 seconds under a no-load condition from the state of T2 for 60 seconds.
- the storage elastic modulus of the body at 40 ° C. and 1 Hz is preferably 20 OMPa or more, more preferably 25 OMPa or more. If the storage elastic modulus is less than 20 OMPa, the surface strength of the polished area tends to decrease, and the planarity of the object to be polished tends to decrease.
- the storage modulus refers to a modulus measured by applying a sine wave vibration to a fine foam using a tensile test jig with a dynamic viscoelasticity measuring device.
- the first to third aspects of the present invention relate to a method of manufacturing a semiconductor device including a step of polishing a surface of a semiconductor wafer using the polishing pad described above.
- FIG. 1 is a schematic configuration diagram showing an example of a conventional polishing apparatus used in CMP polishing.
- FIG. 2 is a schematic view showing an example of a conventional polishing pad having a light transmitting region.
- FIG. 3 is a schematic view showing another example of a conventional polishing pad having a light transmitting region.
- FIG. 4 is a schematic view showing an example of a polishing pad having a light transmitting region of the third invention.
- FIG. 5 is a schematic view showing another example of the polishing pad having the light transmitting region of the third invention.
- FIG. 6 is a schematic view showing another example of the polishing pad having a light transmitting region of the third invention.
- FIG. 7 is a schematic sectional view showing an example of the polishing pad of the present invention.
- FIG. 8 is a schematic sectional view showing another example of the polishing pad of the present invention.
- FIG. 9 is a schematic sectional view showing another example of the polishing pad of the present invention.
- FIG. 10 is a schematic sectional view showing another example of the polishing pad of the present invention.
- FIG. 11 is a schematic view showing a polishing pad of Comparative Example 3.
- FIG. 12 is a schematic configuration diagram showing an example of a CMP polishing apparatus having the end point detection device of the present invention.
- the first to third polishing pads of the present invention have a polishing region and a light transmitting region.
- the material for forming the light transmitting region of the polishing pad according to the first invention is not particularly limited as long as the light transmittance in the entire wavelength region of 400 to 700 nm is 50% or more.
- the material for forming the light transmitting region of the polishing pad according to the second aspect of the present invention is not particularly limited as long as the light transmittance in the entire region at a wavelength of 600 to 700 nm is 80% or more.
- the material for forming the light transmitting region of the polishing pad according to the third invention is not particularly limited, but the light transmittance is 10% in the measurement wavelength region (generally 400 to 700 nm). The above are preferred. If the light transmittance is less than 10%, the reflected light becomes small due to the effect of slurry or dressing marks supplied during polishing, and the film thickness detection accuracy tends to be reduced or cannot be detected.
- Examples of a material for forming such a light transmitting region include polyurethane resin, polyester resin, polyamide resin, acrylic resin, polycarbonate resin, halogenated resin (polyvinyl chloride, polytetrafluoroethylene, polyvinylidene fluoride, etc.), Examples include polystyrene, ore-based resin, polyethylene resin, polypropylene, etc., epoxy resin, and photosensitive resin. These may be used alone or in combination of two or more. Note that it is preferable to use a forming material used for the polishing region or a material similar to the physical properties of the polishing region. In particular, a polyurethane resin having high abrasion resistance that can suppress light scattering in a light transmission region due to dressing marks during polishing is desirable.
- the polyurethane resin is composed of an organic cisocyanate, a polyester resin, and a chain extender.
- Organic isocyanates include 2,4-toluene diisocyanate, 2,6-toluene diisocyanate, 2,2, diphenylmethane diisocyanate, , 4 'diphenyl methane diisocyanate, 4, 4' diphenyl methane diisocyanate, 1, 5-naphthalene diisocyanate, ⁇ -phenylene diisocyanate, m-phenylene diisocyanate, p —Xylylene diisocyanate, m-xylylene diisocyanate, hexamethylene diisocyanate, 1,4 —cyclohexanediisocyanate, 4,4,1-dicyclohexylmethane diisocyanate, isophorone And diisocyanate. These may be used alone or in combination of two or more.
- a polyfunctional polyisocyanate compound having three or more functional groups can be used in addition to the diisocyanate compound.
- polyfunctional isocyanate compounds a series of diisocyanate adduct compounds are commercially available under the trade name Desmodurin-N (manufactured by Peyer) or trade name duranate (manufactured by Asahi Kasei Corporation). Since these trifunctional or higher functional polyisocyanate compounds are liable to gel during the synthesis of a prepolymer when used alone, it is preferable to add them to a diisocyanate compound.
- polyols examples include polyether polyols such as polytetramethylene ether dalicol, polyester polyols such as polybutylene adipate, polyester glycols such as polycaprolactone polyol, and polycaprolactone, and alkylenes.
- Polyester polyols exemplified by reactants with carbonates, etc.Polyester polyols, ethylene carbonates are reacted with polyhydric alcohols, and the resulting reaction mixtures are then reacted with organic dicarbonic acid to form polyester polyols.
- Neat polyols and polycarbonate polyols obtained by a transesterification reaction of a polyhydroxyl compound with aryl carbonate are exemplified. These may be used alone or in combination of two or more.
- chain extender examples include ethylene glycol, 1,2-propylene glycol, 1,3-propylene glycolone, 1,4-butanediol, 1,6-hexanediol, neopentyl glycolone, 1,4 Low-molecular-weight polyols such as cyclohexanedimethanone, 3_methyl ⁇ / — 1,5-1-pentanediol, diethyleneglycol ⁇ triethyleneglycol, and 1,4-bis (2-hydroxyethoxy) benzene , Or 2, -4-toluenediamine, 2,6-toluenediamine, 3,5-diethyl-2,4—toluenediamine, 4,4, DG sec-butyldiaminodiphenylaminomethane, 4,4, diaminodiphenylmethane, 3, 3'-dichloro-1,4, diaminodiphenylmethane, 2,2 ', 3,3'-tetrach
- polyamines are often colored by themselves or a resin using them is colored, it is preferable to mix them so as not to impair physical properties and light transmittance. Further, when a compound having an aromatic hydrocarbon group is used, the light transmittance on the short wavelength side tends to decrease. Therefore, it is particularly preferable not to use such a compound. It may be blended to the extent that it is not impaired.
- the ratio of the organic isocyanate, polyol, and chain extender in the polyurethane resin can be appropriately changed depending on the molecular weight of each, the desired physical properties of the light transmitting region produced from these resins, and the like.
- the number of functional groups (hydroxyl groups + amino groups) of the polyol and the chain extender be equal to the isocyanate ratio of the organic cisocyanate.
- the number of nate groups is preferably 0.95 to 1.15, and more preferably 0.99 to: L.10.
- the polyurethane resin can be manufactured by applying a known urethane technology such as a melting method or a solution method, but is preferably manufactured by a melting method in consideration of cost, working environment, and the like.
- any of a prepolymer method and a Punchiot method can be used as a polymerization procedure of the polyurethane resin.
- the law is common.
- isocyanate-terminated prepolymers produced from organic isocyanates and polyols are commercially available, but if they are compatible with the present invention, they can be used to polymerize the polyurethane used in the present invention by the prepolymer method. Is also possible.
- the method for forming the light transmitting region is not particularly limited, and the light transmitting region can be formed by a known method.
- a method in which a block of the polyurethane resin produced by the above method is made to a predetermined thickness using a band saw type or power type slicer, a method in which a resin is poured into a mold having a cavity having a predetermined thickness, and a method in which the resin is cured ⁇ A method using sheet forming technology is used.
- bubbles are present in the light transmission region, the scattering of light causes the attenuation of the reflected light to increase, and the detection accuracy of the polishing end point and the measurement accuracy of the film thickness tend to decrease.
- the gas contained in the material is sufficiently removed by reducing the pressure to 10 Torr or less before mixing the material in order to remove such bubbles.
- stirring is preferably performed at a rotation speed of 100 rpm or less. It is also preferable to perform the stirring step under reduced pressure.
- the rotation and revolution type mixer is less likely to mix bubbles even at a high rotation speed, it is also a preferable method to perform stirring and defoaming using the mixer.
- the shape and size of the light transmitting region are not particularly limited, but it is preferable that the light transmitting region has the same shape and the same size as the opening of the polishing region.
- the light transmitting region is the circumferential length of the polishing pad ( The shape is not particularly limited as long as the length (D) in the diameter direction is three times or more that of L), and the shapes shown in FIGS. 4 to 6 can be specifically exemplified.
- the thickness of the light transmitting region is not particularly limited, but is preferably equal to or less than the thickness of the polishing region. If the light transmitting area is thicker than the polishing area, there is a possibility that the object to be polished may be damaged by the protruding portion during polishing, or the object to be polished (wafer) may come off the support table (polishing head).
- the thickness of the light transmitting region is 0.5 to 4 mm, preferably 0.6 to 3.5 mm. This is because it is preferable that the light transmitting region has the same thickness as or less than the thickness of the polishing region. If the light transmitting region is thicker than the polishing region, there is a possibility that the object to be polished may be damaged by a portion protruding during polishing. On the other hand, if it is too thin, the durability tends to be insufficient, and the slurry tends to accumulate, so that the detection sensitivity tends to decrease.
- the thickness variation of the light transmitting region is preferably 100 m or less, more preferably 50 ⁇ or less, and particularly preferably 30 ⁇ . It is as follows. If the thickness variation exceeds 100 ⁇ , the surface will have large undulation, and there will be portions where the state of contact with the object to be polished is different, so polishing characteristics (surface uniformity and flattening characteristics) Etc.). In particular, when the light transmitting region is a non-foamed material and the polishing region is a fine foam, the hardness of the light transmitting region is considerably higher than the hardness of the polishing region. The effect on the polishing characteristics tends to be greater than the thickness variation.
- a method of puffing a sheet surface having a predetermined thickness there is a method of puffing a sheet surface having a predetermined thickness. Buffing is preferably performed stepwise using abrasive sheets having different particle sizes. When the light transmitting area is to be puffed, the smaller the surface roughness, the better. When the surface roughness is large, the incident light is irregularly reflected on the surface of the light transmission area, so that the light transmittance decreases and the detection accuracy tends to decrease.
- the material for forming the polishing region can be used without any particular limitation as long as it is generally used as a material for the polishing layer. In the present invention, it is preferable to use a fine foam. By using a fine foam, the slurry can be held in the bubble portion on the surface, and the polishing rate can be increased.
- Examples of the material for forming the polishing area include polyurethane resin, polyester resin, polyamide resin, ataryl resin, polycarbonate resin, and halogen resin (polyvinyl chloride, polytetrafluoroethylene, polyvinylidene fluoride, etc.), Polystyrene olefin tree J3 (polyethylene, polypropylene, etc.), epoxy resin, and photosensitive resin. These may be used alone or in combination of two or more.
- the material for forming the polishing region may be the same as or different from that of the light transmitting region, but it is preferable to use the same material as the forming material used for the light transmitting region.
- Polyurethane resin is particularly preferable as a material for forming a polishing region because polyurethane resin has excellent abrasion resistance and a polymer having desired physical properties can be easily obtained by variously changing a raw material composition.
- the polyurethane resin comprises an organic isocyanate, a polyol, and a chain extender.
- the organic isocyanate to be used is not particularly limited, and examples thereof include the organic isocyanates described above.
- the polyol used is not particularly limited, and examples thereof include the polyols described above.
- the number average molecular weight of these polyols is not particularly limited, but is preferably 500 to 200, more preferably 500 to 2000, from the viewpoint of the elastic properties of the obtained polyurethane. One hundred fifty-five. If the number average molecular weight is less than 500, the polyurethane using this will not have sufficient elastic properties and will be a brittle polymer. Therefore, the polishing pad made of this polyurethane becomes too hard, and causes scratches on the polished surface of the object to be polished. In addition, it is not preferable from the viewpoint of pad life, because it is easily worn. On the other hand, when the number average molecular weight exceeds 2000, the polyurethane using this becomes soft, and the polishing pad produced from this polyurethane tends to have poor flattening characteristics.
- the molecular weight distribution (weight average molecular weight / number average molecular weight) of the polyol used is preferably less than 1.9, more preferably 1.7 or less.
- Molecular weight When a polyol having a distribution of 1.9 or more is used, the hardness (modulus) of the resulting polyurethane becomes more temperature-dependent, and the polishing pad made from this polyurethane has a difference in hardness (modulus of elasticity) with temperature. Becomes larger. Due to the generation of frictional heat between the polishing pad and the object to be polished, the temperature of the polishing pad during polishing changes. Therefore, there is a difference in polishing characteristics, which is not preferable.
- the molecular weight distribution can be measured, for example, by conversion with standard PPG (polypropylene polyol) using a GPC apparatus.
- the polyols include, in addition to the above-mentioned high molecular weight polyols, ethylene glycol, 1,2-propylene daricol, 1,3-propylene glycol, 1,4-butanediol, 1,6-hexanediol, Low molecular weight polyols such as pentyl glycol, 1,4-cyclohexane dimethanol, 3-methylinole 1,5-pentanediol, diethylene glycol, triethylenylene glycol, 1,4-bis (2-hydropened xychetoxy) benzene They can be used together. Further, the ratio of the high molecular weight component to the low molecular weight component in the polyol is determined by the characteristics required for the polishing region manufactured from these components.
- the ratio of the organic isocyanate, polyol, and chain extender in the polyurethane resin can be variously changed depending on the molecular weight of each, the desired physical properties of the polishing region produced therefrom, and the like.
- the number of organic isocyanates in the total number of functional groups (7 acid groups + amino groups) of the polyol and the chain extender should be 0.95 to 1.15. And more preferably 0.99 to 1.10.
- the polyurethane resin can be manufactured by a method similar to the method described above. If necessary, a stabilizer such as an antioxidant, a surfactant, a lubricant, a pigment, a filler, an antistatic agent, and other additives may be added to the polyurethane resin.
- the method for finely foaming the polyurethane resin is not particularly limited, and examples thereof include a method of adding hollow beads, a method of foaming by a mechanical foaming method, and a method of foaming by a chemical foaming method.
- a mechanical foaming method using a silicone-based surfactant which is a copolymer of a polyalkylsiloxane and a polyether and has no active hydrogen group is particularly preferable.
- a silicone-based surfactant which is a copolymer of a polyalkylsiloxane and a polyether and has no active hydrogen group is particularly preferable.
- SH-192 manufactured by Toray Industries, Ltd.
- SH-192 manufactured by Toray Industries, Ltd.
- the method for producing a strong polyurethane foam has the following steps.
- a chain extender is added to the above foam dispersion and mixed and stirred. 3) Curing process
- the isocyanate-terminated prepolymer mixed with a chain extender is cast and cured by heating. ⁇
- the non-reactive gas used to form the microbubbles is preferably a non-flammable gas. Specifically, nitrogen, oxygen, carbon dioxide, rare gas such as helium or argon, or a mixture of these gases is used.
- nitrogen, oxygen, carbon dioxide, rare gas such as helium or argon, or a mixture of these gases is used.
- the use of air, as exemplified and dried to remove moisture, is most preferred in terms of cost.
- stirrer for dispersing the non-reactive gas in the form of fine bubbles into an isocyanate-terminated prepolymer containing a silicone-based surfactant
- a known stirrer can be used without particular limitation.
- a homogenizer, a dissolver An example is a two-axis planetary mixer (a planetary mixer).
- a whipper-type stirring blade because fine bubbles can be obtained.
- stirring in the mixing step does not need to be stirring to form bubbles, and it is preferable to use a stirring device that does not include large bubbles.
- a stirring device a planetary mixer is suitable. There is no problem even if the same stirring device is used for the stirring step and the mixing step, and it is also preferable to adjust the stirring conditions such as adjusting the rotation speed of the stirring blades as necessary. It is.
- heating and post-curing the foam that has reacted until the foam dispersion has flowed into the mold and no longer flows is effective in improving the physical properties of the foam. Yes, very suitable. It is also possible to use a condition in which a bubble dispersion liquid is poured into a mold and immediately placed in a heating open to perform stoichiometry.Under such conditions, heat is not immediately transmitted to the reaction components, so that the bubble diameter does not increase. .
- the curing reaction is preferably performed at normal pressure because the bubble shape is stabilized.
- a known catalyst such as a tertiary amine-based or organotin-based catalyst that promotes the polyurethane reaction may be used.
- Catalyst type added calo The amount is selected in consideration of the flow time after the mixing step and pouring into a mold having a predetermined shape.
- each component is weighed and charged into a container and stirred. Even in a batch system, each component and a non-reactive gas are continuously supplied to a stirrer and stirred to form a bubble.
- a continuous production system in which a dispersion is sent out to produce a molded article may be used.
- the polishing region serving as the polishing layer is manufactured by cutting the polyurethane foam produced as described above into a predetermined size.
- a polishing region made of a fine foam is provided with a groove for holding and renewing a slurry on a polishing surface in contact with an object to be polished.
- the polishing area has many openings in the polishing surface because it is formed of a fine foam, and has a function of holding slurry, but further efficiently retains slurry and renews slurry. Therefore, it is preferable to have a groove on the polishing side surface in order to prevent the object to be polished from breaking down due to adsorption to the object to be polished.
- the grooves are not particularly limited as long as they hold and renew the slurry, and include, for example, XY lattice grooves, concentric grooves, through holes, holes that do not penetrate, polygonal columns, cylinders, and spiral shapes. Grooves, eccentric grooves, radial grooves, and combinations of these grooves.
- the groove pitch, groove width, groove depth, and the like are not particularly limited, and are appropriately selected and formed. In addition, these grooves are regular; generally, the groove pitch, groove width, groove depth, etc. should be changed in a certain range to make slurry retention and renewability desirable. Is also possible.
- the method of forming the groove is not particularly limited.
- a method of mechanical cutting using a jig such as a byte of a predetermined size a method of pouring a resin into a mold having a predetermined surface shape, and curing the resin.
- Method a method of forming by pressing a resin with a press plate having a predetermined surface shape, a method of forming by photolithography, a method of forming by printing, and a laser beam using a carbon dioxide laser And the like.
- the thickness of the polishing area is not particularly limited, but is about 0.8 to 2.0 mm.
- a method of producing the polishing region having the thickness a method of setting the block of the fine foam to a predetermined thickness using a band-saw type or a force-type slicer, Examples of the method include a method in which a resin is poured into a mold having a thickness of a cavity and cured, and a method using a coating technique and a sheet forming technique.
- the variation in the thickness of the polishing region is preferably 100 m or less, and particularly preferably 50 m or less. If the thickness variation exceeds 100 / ⁇ m, the polished area will have a large undulation, and there will be portions where the state of contact with the object to be polished is different, which tends to adversely affect the polishing characteristics.
- the surface of the polishing region is generally dressed using a dresser in which diamond cannon particles are electrodeposited or fused in the initial stage of polishing. Exceeding this will increase the dressing time and reduce production efficiency.
- a method of suppressing the variation in thickness there is a method of puffing a surface of a polishing region having a predetermined thickness. When performing puffing, it is preferable to perform stepwise with abrasive sheets having different particle sizes.
- the method for producing the polishing pad having the polishing region and the light transmitting region is not particularly limited, and various methods can be considered. Specific examples will be described below. Although the following specific example describes a polishing pad provided with a cushion layer, a polishing pad without a cushion layer may be used.
- a polishing area 9 opened to a predetermined size is attached to a double-sided tape 10 as shown in FIG. 7, and a predetermined size is set under the polishing area 9 so as to fit the opening of the polishing area 9 thereunder. Attach the cushion layer 11 that was opened at the beginning. Next, a double-sided tape 12 with a release paper 13 is attached to the cushion layer 11, a light transmitting area 8 is fitted into an opening of the polishing area 9, and the method is applied.
- a polishing area 9 opened to a predetermined size is bonded to a double-sided tape 10 and a cushion layer 11 is bonded thereunder. Thereafter, the double-sided tape 10 and the cushion layer 11 are opened to predetermined sizes so as to match the openings of the polishing region 9. Next, a double-sided tape 12 with a release paper 13 attached to the cushion layer 11 is attached, and a light transmitting area 8 is fitted into an opening of the polishing area 9 to be attached.
- a polishing area 9 opened to a predetermined size is bonded to a double-sided tape 10 and a cushion layer 11 is bonded thereunder.
- Open to a predetermined size This is a method in which the light transmitting region 8 is fitted into the opening of the polishing region 9 and bonded. In this case, the opposite side of the light transmission region 8 is in an open state, and there is a possibility that dust or the like accumulates. Therefore, it is preferable to attach a member 14 for closing the dust.
- a cushion layer 11 to which a double-sided tape 12 with a release paper 13 is attached is opened to a predetermined size.
- the polishing area 9 having an opening of a predetermined size is bonded to the double-sided tape 10 and these are bonded so that the openings are aligned.
- the light transmitting region 8 is fitted into the opening of the polishing region 9 and bonded.
- the opposite side of the polishing area is opened, and there is a possibility that dust or the like accumulates. Therefore, it is preferable to attach a member 14 for closing the area.
- the means for opening the polishing area and the cushion layer is not particularly limited.
- a method of pressing and opening a jig having a cutting ability, a method using a carbon dioxide laser or the like is used.
- the size and shape of the opening in the polishing region according to the first and second aspects of the present invention are not particularly limited.
- the cushion layer supplements the characteristics of the polishing region (polishing layer).
- the cushion layer is necessary in the CMP to balance both the planarity and the uniformity that are in a trade-off relationship.
- Planarity refers to the flatness of a pattern portion when polishing an object to be polished having minute irregularities generated when a pattern is formed, and uniformity refers to uniformity of the entire object to be polished. Planarity is improved by the characteristics of the polishing layer, and uniformity is improved by the characteristics of the cushion layer.
- the material for forming the cushion layer is not particularly limited.
- a resin non-woven fabric such as a polyester non-woven fabric, a polyester non-woven fabric, a polyester non-woven fabric, a polyurethane non-woven fabric, a polyurethane non-woven fabric, a polyurethane non-woven fabric, a polyurethane non-woven fabric, a polyurethane non-woven fabric, and a polyurethane foam
- polymer resin foams such as ethylene foam, rubber resins such as butadiene rubber and isoprene rubber, and photosensitive resins.
- the double-sided tape has a general configuration in which an adhesive layer is provided on both sides of a substrate such as a nonwoven fabric or a film. In consideration of preventing the penetration of slurry into the cushion layer, it is preferable to use a film as the base material.
- the composition of the adhesive layer include a rubber adhesive and an acrylic adhesive. Considering the content of metal ions, an ataryl-based adhesive is preferred because of its low content of metal ions. Further, since the composition of the polishing area and the cushion layer may be different, it is possible to optimize the adhesive strength of each layer by making the composition of each adhesive layer of the double-sided tape different. As a method of bonding the cushion layer 11 and the double-sided tape 12, a method of pressing and bonding a double-sided tape to the cushion layer may be used.
- the double-sided tape has a general configuration in which adhesive layers are provided on both sides of a base material such as a nonwoven fabric or a film as described above. Considering that the polishing pad is peeled off from the platen after use, it is preferable to use a film as the base material because it is possible to eliminate tape residue and the like.
- the composition of the adhesive layer is the same as described above.
- the member 14 is not particularly limited as long as it closes the opening. However, when polishing, it must be peelable.
- a semiconductor device is manufactured through a step of polishing a surface of a semiconductor wafer using the polishing pad.
- the semiconductor wafer is generally obtained by laminating a wiring metal and a silicon oxide film on a silicon wafer.
- the method and apparatus for polishing a semiconductor wafer are not particularly limited.
- a polishing table 2 for supporting a polishing pad 1 and a support table (polishing head) for supporting a semiconductor wafer 4 The polishing is performed using a backing material for uniformly pressurizing the wafer 5 and the wafer, and a polishing apparatus provided with a polishing agent 3 supply mechanism.
- the polishing pad 1 is attached to the polishing platen 2 by, for example, sticking with a double-sided tape.
- the polishing platen 2 and the support table 5 are arranged so that the polishing pad 1 and the semiconductor wafer 4 supported respectively face each other, and are provided with rotating shafts 6 and 7, respectively. I have. Further, a pressure mechanism for pressing the semiconductor wafer 4 against the polishing pad 1 is provided on the support 5 side. At the time of polishing, the semiconductor wafer 4 is pressed against the polishing pad 1 while rotating the polishing platen 2 and the support table 5, and polishing is performed while supplying slurry.
- the slurry flow rate, polishing load, polishing platen rotation speed, and wafer rotation speed are not particularly limited, and are adjusted appropriately.
- the prepared light transmission region member was cut out to a size of 2 cm ⁇ 6 cm (thickness: arbitrary) to obtain a light transmittance measurement sample.
- the measurement was performed in a measurement wavelength range of 300 to 700 nm using a spectrophotometer (manufactured by Hitachi, Ltd., U-3210 Spectrophotometer).
- the measurement results of these light transmittances were converted to light transmittances of a thickness of lmm using the law of Lamb e rt—B e er.
- the prepared light transmission area member was cut out to a size of 2 cm ⁇ 6 cm (thickness: 1.25 mm) to obtain a light transmittance measurement sample.
- the measurement was performed in a measurement wavelength range of 600 to 700 nm using a spectrophotometer (manufactured by Hitachi, Ltd., U-32010 Spectrophotometer).
- the measurement results of these light transmittances were converted to light transmittances of a thickness of 1 mm using the Lamb e r rt -B e er law.
- Polishing cut in parallel with a microtome cutter as thin as possible to a thickness of about lmm The region was used as a sample for measuring the average bubble diameter.
- the sample was fixed on a slide glass, and the total bubble diameter in an arbitrary 0.2 mm X 0.2 mm range was measured using an image processor '' (manufactured by Toyobo Co., Ltd., Image Analyzer VI 0). The average bubble diameter was calculated.
- a polishing area (polishing layer) cut into a 7 mm diameter circle (thickness: any) is used as a sample for measuring the compressibility and the compression recovery rate, and is used in an environment with a temperature of 23 ° C ⁇ 2 ° C and a humidity of 50% ⁇ 5%. For 40 hours.
- the compression ratio and the compression recovery ratio were measured using a thermal analyzer TMA (manufactured by SEIKO I NSTRUM ENTS, SS6000). The formulas for calculating the compression ratio and the compression recovery ratio are shown below.
- T 1 Thickness of the polishing layer when a load of 3 OKPa (300 g cm 2 ) stress is maintained for 60 seconds from no load on the polishing layer
- T 2 Thickness of the polishing layer when a stress load of 18 OKPa (1800 g / cm 2 ) is maintained for 60 seconds from the state of T 1
- T 3 T hold 60 seconds 2 state in the unloaded condition, then, 30 KP a (30 0 g / cm 2) of the polishing layer thickness when held for 60 seconds the load of stress
- the test was performed in accordance with JIS K71 98-1991.
- the polished area cut into a 3 mm X 4 Omm strip (thickness; arbitrary) was used as a sample for dynamic viscoelasticity measurement, and was allowed to stand in a vessel containing silica gel for 4 days under an environmental condition of 23 ° C.
- the exact width and thickness of each sheet after cutting were measured with a micrometer.
- the storage elastic modulus E was measured using a dynamic viscoelasticity spectrometer (Iwamoto Seisakusho, currently IS Giken). The measurement conditions at that time are shown below.
- Optical detection evaluation of the film thickness of the wafer was performed by the following method.
- As the wafer an 8-inch silicon wafer with a thermal oxide film formed to a thickness of 1 m was used, and a 1.27 mm-thick light transmitting area member was placed thereon.
- an interference type film thickness measuring device manufactured by Otsuka Electronics Co., Ltd.
- the film thickness was measured several times in a wavelength region of 400 to 800 nm.
- the results of the calculated film thickness and the conditions of the peaks and valleys of the interference light at each wavelength were checked, and the film thickness detection evaluation was performed based on the following criteria.
- Optical detection evaluation of the film thickness of the wafer was performed by the following method.
- a 1 / m-thick thermally oxidized film formed on an 8-inch silicon wafer was used, and a 1.25 mm-thick light transmitting area member was placed thereon.
- the film thickness was measured several times at a wavelength of 633 nm by using an interference type film thickness measuring device using a He—Ne laser.
- the results of the calculated film thickness and the situation of the peaks and valleys of the interference light were checked, and the film thickness detection evaluation was performed based on the following criteria.
- the optical detection evaluation of the film thickness of the wafer was performed by the following method as by Byone.
- As the wafer an 8-inch silicon wafer having a thermal oxide film formed at 1 ⁇ was used.
- the film thickness on the line connecting the notch portion and the center of the wafer was measured at three points at 3 mm intervals using an interference type film thickness measuring device (manufactured by Otsuka Electronics Co., Ltd.), and the average value was averaged.
- the light-transmitting regions of the polishing pads of the example and the comparative example were respectively placed on the wafer so as to be aligned with the line, and the film thickness was measured at 3 mm intervals using an interference type film thickness measuring device in the same manner.
- the average value was taken as the average film thickness (2).
- the average film thickness (1) and the average film thickness (2) were compared, and the film thickness detection evaluation was performed based on the following criteria.
- the thickness was measured at 5 mm intervals along the center line in the long side direction of the manufactured light transmitting region. Maximum and minimum of each measured value The difference between the values was defined as the thickness variation. (Evaluation of polishing characteristics)
- polishing characteristics were evaluated using the prepared polishing pad.
- the polishing rate was calculated from the time taken by polishing a 0.5- ⁇ m silicon wafer having a thermal oxidation film formed thereon to a thickness of about 1 ⁇ .
- an interference type film thickness measuring device manufactured by Otsuka Electronics Co., Ltd.
- polishing conditions a silica slurry (SS12, made of Cabotnet earth) was added as a slurry at a flow rate of 150 m 1 / min during polishing.
- the polishing load was 350 g / cm 2
- the polishing table rotation speed was 35 rpm
- the wafer rotation speed was 30 rpm.
- a thermal oxide film was deposited on an 8-inch silicon wafer by 0.5 ⁇ m, followed by predetermined patterning, and an oxide film was deposited by p-TEOS to 1 ⁇ .
- a wafer with a pattern of 0.5 ⁇ um was fabricated. This wafer was polished under the above conditions, and after polishing, each step was measured to evaluate the flattening characteristics.
- Two steps were measured as the flattening characteristics.
- One is a local step, which is a step in a pattern in which 270 m wide lines are arranged in a space of 30 / zm. The step after one minute was measured.
- the other is the amount of shaving.
- the 270 mu scraping amount of space ⁇ when stepped line top is below 2000 a was determined. If the value of the local step is low, it indicates that the flattening speed is high at a certain time with respect to the unevenness of the oxide film caused by the pattern dependence on the wafer. Also, if the amount of space scraping is small, the shaving amount of the portion not desired to be shaved is small and the flatness is high.
- a polyester polyol composed of adipic acid and hexanediol (number average molecular weight 2440) and 31 parts by weight of 1,4-butanediol were mixed, and the temperature was adjusted to 70 ° C.
- 100 parts by weight of 4,4, diphenylmethanediisocyanate which had been previously adjusted to 70 ° C, and stirred for about 1 minute.
- the mixed solution was poured into a container kept at 100 ° C., and subjected to stoker at 100 ° C. for 8 hours to produce a polyurethane resin.
- a light transmission area (57 mm long, 19 mm wide, and 1.25 mm thick) was formed by injection molding. Table 1 shows the light transmittance and the change rate of the manufactured light transmission region.
- the light transmitting region (length: 57%) was prepared in the same manner as in Production Example 1, except that the polyol was changed to 114 parts by weight of polytetramethylene glycol (number average molecular weight: 890) and 24 parts by weight of 1,4-butanediol. mm, width 19 mm, thickness 1.25 mm). Table 1 shows the light transmittance and the change rate of the manufactured light transmitting region.
- a filtered polyether prepolymer (Adiprene L-325, manufactured by Uniroyal, NCO concentration: 2.22 meq / g) and a filtered silicone-based nonionic surfactant (fluorine-coated reaction vessel) 3 parts by weight of Toray Dow Silicone Co., Ltd., SH192) were mixed and the temperature was adjusted to 80 ° C. Using a fluorine-coated stirring blade, the mixture was vigorously stirred at a rotation speed of 900 rpm for about 4 minutes so as to take bubbles into the reaction system.
- a fluorine-coated stirring blade the mixture was vigorously stirred at a rotation speed of 900 rpm for about 4 minutes so as to take bubbles into the reaction system.
- this sheet was surface-puffed to a predetermined thickness using a puffing machine (manufactured by Amitec) to obtain a sheet having a thickness accuracy adjusted (sheet thickness: 1.27 mm).
- the puffed sheet is punched to a predetermined diameter (61 cm), and the groove width is 0.25 mm, the groove pitch is 1.50 mm, and the groove depth is 0 using a grooving machine (manufactured by Toho Steel Machinery Co., Ltd.). 4 Omm concentric grooves were machined.
- a double-sided tape manufactured by Sekisui Chemical Co., Ltd., double tack tape
- a hole (thickness: 1.27 mm, 57.5 mm ⁇ 19.5 mm) for embedding was punched out to create a polished area with double-sided tape.
- the physical properties of the polished region were as follows: average cell diameter 45 / xm, specific gravity 0.86 g / cm 3 , Asker D hardness 53 degrees, compression ratio 1.0%, compression recovery ratio 65.0. /.
- the storage elastic modulus was 275 MPa. (Preparation of polishing pad)
- Example 1 71.5 96.5 96.9 95.5 97.1 71.5 26.4 2300 20 2900 ⁇ .
- Example 3 51.4 96.9 96.8 95.3 97.2 51.4 47.1 2300 20 3000 ⁇ Comparative example ⁇ 14J 85.4 92.9 93.9 94.1 14.7 '84.4 2350 20 2950 X
- Table 1 shows that when the light transmittance in the light transmission region at a wavelength of 400 to 700 nm is 50% or more (Examples 1 to 3), the end point of the wafer with good reproducibility without affecting the polishing characteristics. It can be seen that detection is possible.
- Isocyanate-terminated prevolimer temperature adjusted to 70 ° C (made of Gunny Loyano earth, L-325, NCO content: 9.15% by weight) 50 parts by weight are weighed in a vacuum tank and depressurized (about l OTo rr) in the prevolimer. The remaining gas was degassed.
- 39 parts by weight of 4,4, -methylenebis (o-chloroaniline) (Ihara Chemical Co., Ltd., Iharacuamine I) dissolved at 120 ° C was added, and a revolving mixer (Shinky Co., Ltd.) was added. ) And stirred at 800 rpm for 3 minutes.
- the mixture was poured into a mold, and post-cured in an oven at 110 ° C. for 8 hours to produce a light transmitting region member. Then, a light transmission area (length 57 mm, width 19 mm, thickness 1.25 mm) was cut out from the light transmission area member. Visual observation revealed that there were no bubbles in the light transmitting area. Table 2 shows the light transmittance of the fabricated light transmission area.
- a light transmitting area (length 57 mm, width 19 mm, thickness 1.25 mm) was cut out from the light transmitting area member. Visual observation revealed that there were no bubbles in the light transmitting area.
- Table 2 shows the light transmittance of the manufactured light transmitting region.
- a light transmitting region member was produced by injection molding. Then, a light transmitting area (57 mm long, 19 mm wide, 1.25 mm thick) was cut out from the light transmitting area member. Visual observation revealed that the light transmitting region contained some air bubbles. Table 2 shows the light transmittance of the manufactured light-transmitting region.
- a filtered polyether blepolymer (Adiprene L-325, manufactured by Uniroyal, NCO concentration: 2.22 meqZg) and a filtered silicone-based nonionic surfactant in a fluorine-coated reaction vessel 3 parts by weight of Toray Dow Silicone Co., Ltd., SH192) were mixed and the temperature was adjusted to 80 ° C. Using a fluorine-coated stirring blade, the mixture was vigorously stirred at a rotation speed of 900 rpm for about 4 minutes so as to take bubbles into the reaction system.
- a fluorine-coated stirring blade the mixture was vigorously stirred at a rotation speed of 900 rpm for about 4 minutes so as to take bubbles into the reaction system.
- this sheet was surface-puffed to a predetermined thickness using a puffing machine (Amitechne: t®) to obtain a sheet with a uniform thickness (sheet thickness: 1.27 mm).
- the puffed sheet is punched to a predetermined diameter (61 cm), and the groove width is 0.25 mm, the groove pitch is 1.5 Omm, and the groove depth is 0.2 mm using a grooving machine (manufactured by Toho Steel Machinery Co., Ltd.). 4 Omm concentric grooves were machined.
- a double-sided tape manufactured by Sekisui Chemical Co., Ltd., double tack tape
- a hole (thickness: 1.27 mm, 57.5 mm ⁇ 19.5 mm) for embedding was punched out to create a polished area with double-sided tape.
- the physical properties of the polished region were as follows: average cell diameter 45 ⁇ , specific gravity 0.86 g / cm 3 , Ascar D hardness 53 °, compression ratio 1.0%, compression recovery ratio 65.0%, storage elastic modulus 275MPa. there were.
- 4,4′-methylenebis (o-chloroaniline) manufactured by Ihara Chemical Co., Ltd., iharacuamine MT
- the mixture was poured into a mold and subjected to boss curing in an oven at 110 ° C. for 8 hours, thereby producing a rectangular light transmitting region (length 57 mm, width 19 mm, thickness 1.25 mm).
- the difference in thickness variation between the light transmitting regions was 107 zm.
- a light transmitting region was produced in the same manner as in Production Example 8, except that the shape of the light transmitting region was rectangular, 100 mm long, 19 mm wide, and 1.25 mm thick.
- a light transmitting region (57 mm long, 19 mm wide, 1.25 mm thick) was prepared in the same manner as in Production Example 8. Then, the light transmitting area was buffed using a sandpaper of 240th. After that, when the difference in thickness variation of the light transmission region was measured, it was found to be 45 ⁇ m.
- a light transmitting region (57 mm in length, 19 mm in width, and 1.25 mm in thickness) was produced in the same manner as in Production Example 8. Then, the light transmitting area was buffed using a sandpaper of number 240, and further buffed similarly using a sandpaper of number 800. Thereafter, the difference in thickness variation in the light transmission region was measured and found to be 28 ⁇ .
- a light transmitting region was produced in the same manner as in Production Example 8, except that the shape of the light transmitting region was a circle having a diameter of 30 mm.
- a light transmitting region was produced in the same manner as in Production Example 8, except that the shape of the light transmitting region was rectangular, 50.8 mm in height, 20.3 mm in width, and 1.25 mm in thickness.
- this sheet was surface-puffed to a predetermined thickness by using a puffing machine (manufactured by Amitec) to obtain a sheet having a regulated thickness accuracy (sheet thickness: 1.27 mm).
- the puffed sheet is punched to a predetermined diameter (61 cm), and the groove width is 0.25 mm, the groove pitch is 1.50 mm, and the groove depth is 0 using a grooving machine (manufactured by Toho Steel Machinery Co., Ltd.). ⁇ 40mm concentric grooves were machined.
- a double-sided tape (Sekisui Chemical Co., Ltd., double tack tape) was used on the sheet opposite to the grooved surface to create a polished area with double-sided tape.
- the physical properties of the polished area were as follows: average cell diameter 50 111, specific gravity 0.86 gZ cm 3 , Asker D hardness 52 degrees, compressibility 1.1%, compression recovery 65.0%, storage modulus 260 MPa. Was.
- the length (D) in the diameter direction of the light transmitting region is three times the length (L) in the circumferential direction.
- the length (D) of the light transmitting region in the radial direction with respect to the diameter of the wafer to be polished was 0.28 times. Table 3 shows the polishing characteristics of the prepared polishing pad.
- the length (D) in the diameter direction of the light transmitting area is the length in the circumferential direction.
- the length (D) of the light transmission region in the diameter direction was 0.49 times the diameter of the wafer to be polished.
- Table 3 shows the polishing characteristics of the polishing pad.
- Example 6 a polishing pad was produced in the same manner as in Example 6, except that the light transmitting region produced in Production Example 10 was used instead of the light transmitting region produced in Production Example 8. .
- Table 3 shows the polishing characteristics of the prepared polishing pad. .
- a polishing pad was produced in the same manner as in Example 6, except that the light transmitting region produced in Production Example 11 was used instead of the light transmitting region produced in Production Example 8.
- Table 3 shows the polishing characteristics of the prepared polishing pad.
- a cushion layer made of polyethylene foam (Toray clay, thickness: 0.8 mm) with a puffed surface and corona treatment was applied to the adhesive surface of the polishing area with double-sided tape. And stuck together. Further, a double-sided tape was attached to the surface of the cushion layer.
- the length (D) in the diameter direction of the light transmitting area is the length in the circumferential direction.
- the length (D) of the light transmitting region in the diameter direction was 0.09 times the diameter of the wafer to be polished.
- Table 3 shows the polishing characteristics of the prepared polishing pad.
- a hole (circular, 30.5 mm in diameter) was inserted between the center and the peripheral end of the polishing area with double-sided tape to insert the light transmitting area. Then, a cushion layer made of polyethylene foam (Toray-need, Toray Reef, thickness: 0.8 mm) with puffed surface and corona treatment is applied to the adhesive surface of the polishing area with double-sided tape. They were bonded using a machine. Further, a double-sided tape was stuck on the surface of the cushion layer. After that, the cushion layer having a diameter of 24 mm was punched out of the hole portion punched to fit the light transmission region of the polishing region, and the hole was penetrated.
- a cushion layer made of polyethylene foam (Toray-need, Toray Reef, thickness: 0.8 mm) with puffed surface and corona treatment is applied to the adhesive surface of the polishing area with double-sided tape. They were bonded using a machine. Further, a double-sided tape was stuck on the surface of the cushion layer. After that,
- the length (D) in the diameter direction of the light transmitting region is 2.5 times the length (L) in the circumferential direction.
- the diameter (D) of the light transmitting region in the diameter direction was 0.25 times the diameter of the wafer to be polished.
- Table 3 shows the polishing characteristics of the prepared polishing pad. Table 3
- the wafer In the polishing of the wafer the wafer In the polishing of the wafer, the light transmission region does not concentrate on only a part of the wafer and does not come into contact with the entire surface of the wafer, but uniformly contacts the entire surface of the wafer. (Uniformity). In addition, in-plane uniformity can be improved by reducing the thickness variation of the light transmission region (Examples 8 and 9).
- the polishing pad of the present invention is used for flattening irregularities on the surface of a wafer by chemical mechanical polishing (CMP). More specifically, the present invention relates to a polishing pad having a window for detecting a polishing state or the like by optical means.
- CMP chemical mechanical polishing
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
- Mechanical Treatment Of Semiconductor (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020057009545A KR101047933B1 (ko) | 2002-11-27 | 2003-11-27 | 연마 패드 및 반도체 장치의 제조 방법 |
AU2003302299A AU2003302299A1 (en) | 2002-11-27 | 2003-11-27 | Polishing pad and method for manufacturing semiconductor device |
US10/536,621 US8845852B2 (en) | 2002-11-27 | 2003-11-27 | Polishing pad and method of producing semiconductor device |
Applications Claiming Priority (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002-343199 | 2002-11-27 | ||
JP2002343199 | 2002-11-27 | ||
JP2003000331A JP3582790B2 (ja) | 2002-11-27 | 2003-01-06 | 研磨パッド及び半導体デバイスの製造方法 |
JP2003-000331 | 2003-01-06 | ||
JP2003-029477 | 2003-02-06 | ||
JP2003029477 | 2003-02-06 | ||
JP2003-064653 | 2003-03-11 | ||
JP2003064653 | 2003-03-11 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004049417A1 true WO2004049417A1 (ja) | 2004-06-10 |
Family
ID=32398174
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2003/015128 WO2004049417A1 (ja) | 2002-11-27 | 2003-11-27 | 研磨パッド及び半導体デバイスの製造方法 |
Country Status (5)
Country | Link |
---|---|
US (1) | US8845852B2 (ja) |
KR (1) | KR101047933B1 (ja) |
AU (1) | AU2003302299A1 (ja) |
TW (1) | TW200416102A (ja) |
WO (1) | WO2004049417A1 (ja) |
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7871309B2 (en) | 2004-12-10 | 2011-01-18 | Toyo Tire & Rubber Co., Ltd. | Polishing pad |
US7874894B2 (en) | 2006-05-17 | 2011-01-25 | Toyo Tire & Rubber Co., Ltd. | Polishing pad |
US7927183B2 (en) | 2006-05-17 | 2011-04-19 | Toyo Tire & Rubber Co., Ltd. | Polishing pad |
US8094456B2 (en) | 2006-01-10 | 2012-01-10 | Toyo Tire & Rubber Co., Ltd. | Polishing pad |
US8148441B2 (en) | 2005-03-08 | 2012-04-03 | Toyo Tire & Rubber Co., Ltd. | Polishing pad and manufacturing method thereof |
US20120108149A1 (en) * | 2006-04-19 | 2012-05-03 | Toyo Tire & Rubber Co., Ltd. | Method for manufacturing polishing pad |
CN101659035B (zh) * | 2004-12-10 | 2012-07-18 | 东洋橡胶工业株式会社 | 研磨垫及使用该研磨垫的半导体器件的制造方法 |
US8303372B2 (en) | 2006-08-31 | 2012-11-06 | Toyo Tire & Rubber Co., Ltd. | Polishing pad |
US8304467B2 (en) | 2005-05-17 | 2012-11-06 | Toyo Tire & Rubber Co., Ltd. | Polishing pad |
US8309466B2 (en) | 2005-08-30 | 2012-11-13 | Toyo Tire & Rubber Co., Ltd. | Polishing pad |
US8865785B2 (en) | 2007-03-28 | 2014-10-21 | Toyo Tire & Rubber Co., Ltd. | Polishing pad |
US8993648B2 (en) | 2006-08-28 | 2015-03-31 | Toyo Tire & Rubber Co., Ltd. | Polishing pad |
CN108369906A (zh) * | 2015-12-18 | 2018-08-03 | 胜高股份有限公司 | 晶圆抛光方法及抛光装置 |
KR20190017034A (ko) * | 2016-07-29 | 2019-02-19 | 주식회사 쿠라레 | 연마 패드 및 그것을 사용한 연마 방법 |
Families Citing this family (34)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1739729B1 (en) * | 2004-04-23 | 2012-03-28 | JSR Corporation | Polishing pad for semiconductor wafer, polishing multilayered body for semiconductor wafer having same, and method for polishing semiconductor wafer |
JP4931133B2 (ja) * | 2007-03-15 | 2012-05-16 | 東洋ゴム工業株式会社 | 研磨パッド |
JP4971028B2 (ja) * | 2007-05-16 | 2012-07-11 | 東洋ゴム工業株式会社 | 研磨パッドの製造方法 |
JP5363470B2 (ja) | 2007-06-08 | 2013-12-11 | アプライド マテリアルズ インコーポレイテッド | 窓付きの薄い研磨パッド及び成形プロセス |
US20090126495A1 (en) * | 2007-11-15 | 2009-05-21 | The Ultran Group, Inc. | Ultrasonic Spectroscopic Method for Chemical Mechanical Planarization |
US7967661B2 (en) * | 2008-06-19 | 2011-06-28 | Micron Technology, Inc. | Systems and pads for planarizing microelectronic workpieces and associated methods of use and manufacture |
CN102089121B (zh) | 2008-07-31 | 2015-04-08 | 信越半导体股份有限公司 | 芯片的研磨方法及双面研磨装置 |
US9017140B2 (en) * | 2010-01-13 | 2015-04-28 | Nexplanar Corporation | CMP pad with local area transparency |
JP5528169B2 (ja) * | 2010-03-26 | 2014-06-25 | 東洋ゴム工業株式会社 | 研磨パッドおよびその製造方法、ならびに半導体デバイスの製造方法 |
JP5620141B2 (ja) | 2010-04-15 | 2014-11-05 | 東洋ゴム工業株式会社 | 研磨パッド |
US9156124B2 (en) * | 2010-07-08 | 2015-10-13 | Nexplanar Corporation | Soft polishing pad for polishing a semiconductor substrate |
US8657653B2 (en) | 2010-09-30 | 2014-02-25 | Nexplanar Corporation | Homogeneous polishing pad for eddy current end-point detection |
US8628384B2 (en) * | 2010-09-30 | 2014-01-14 | Nexplanar Corporation | Polishing pad for eddy current end-point detection |
US9079289B2 (en) | 2011-09-22 | 2015-07-14 | Toyo Tire & Rubber Co., Ltd. | Polishing pad |
US9597769B2 (en) | 2012-06-04 | 2017-03-21 | Nexplanar Corporation | Polishing pad with polishing surface layer having an aperture or opening above a transparent foundation layer |
US9216489B2 (en) * | 2014-03-28 | 2015-12-22 | Rohm And Haas Electronic Materials Cmp Holdings, Inc. | Chemical mechanical polishing pad with endpoint detection window |
US9873180B2 (en) | 2014-10-17 | 2018-01-23 | Applied Materials, Inc. | CMP pad construction with composite material properties using additive manufacturing processes |
CN113579992A (zh) | 2014-10-17 | 2021-11-02 | 应用材料公司 | 使用加成制造工艺的具复合材料特性的cmp衬垫建构 |
US9776361B2 (en) | 2014-10-17 | 2017-10-03 | Applied Materials, Inc. | Polishing articles and integrated system and methods for manufacturing chemical mechanical polishing articles |
US10875153B2 (en) | 2014-10-17 | 2020-12-29 | Applied Materials, Inc. | Advanced polishing pad materials and formulations |
US11745302B2 (en) | 2014-10-17 | 2023-09-05 | Applied Materials, Inc. | Methods and precursor formulations for forming advanced polishing pads by use of an additive manufacturing process |
WO2017074773A1 (en) | 2015-10-30 | 2017-05-04 | Applied Materials, Inc. | An apparatus and method of forming a polishing article that has a desired zeta potential |
US10593574B2 (en) | 2015-11-06 | 2020-03-17 | Applied Materials, Inc. | Techniques for combining CMP process tracking data with 3D printed CMP consumables |
US10391605B2 (en) | 2016-01-19 | 2019-08-27 | Applied Materials, Inc. | Method and apparatus for forming porous advanced polishing pads using an additive manufacturing process |
US10213894B2 (en) | 2016-02-26 | 2019-02-26 | Applied Materials, Inc. | Method of placing window in thin polishing pad |
DE102016116012A1 (de) | 2016-08-29 | 2018-03-01 | Lapmaster Wolters Gmbh | Verfahren zum Messen der Dicke von flachen Werkstücken |
US10875149B2 (en) * | 2017-03-30 | 2020-12-29 | Taiwan Semiconductor Manufacturing Co., Ltd. | Apparatus and method for timed dispensing various slurry components |
US10207388B2 (en) | 2017-04-19 | 2019-02-19 | Rohm And Haas Electronic Materials Cmp Holdings, Inc. | Aliphatic polyurethane optical endpoint detection windows and CMP polishing pads containing them |
US11471999B2 (en) | 2017-07-26 | 2022-10-18 | Applied Materials, Inc. | Integrated abrasive polishing pads and manufacturing methods |
WO2019032286A1 (en) | 2017-08-07 | 2019-02-14 | Applied Materials, Inc. | ABRASIVE DISTRIBUTION POLISHING PADS AND METHODS OF MAKING SAME |
US10465097B2 (en) | 2017-11-16 | 2019-11-05 | Rohm And Haas Electronic Materials Cmp Holdings, Inc. | Aliphatic UV cured polyurethane optical endpoint detection windows with high UV transparency for CMP polishing pads |
KR20210042171A (ko) | 2018-09-04 | 2021-04-16 | 어플라이드 머티어리얼스, 인코포레이티드 | 진보한 폴리싱 패드들을 위한 제형들 |
JP7105334B2 (ja) * | 2020-03-17 | 2022-07-22 | エスケーシー ソルミックス カンパニー,リミテッド | 研磨パッドおよびこれを用いた半導体素子の製造方法 |
US11878389B2 (en) | 2021-02-10 | 2024-01-23 | Applied Materials, Inc. | Structures formed using an additive manufacturing process for regenerating surface texture in situ |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001287158A (ja) * | 1999-03-31 | 2001-10-16 | Nikon Corp | 研磨部材、研磨装置、調整方法、測定方法、半導体デバイス製造方法、及び半導体デバイス |
JP2002001647A (ja) * | 2000-06-19 | 2002-01-08 | Rodel Nitta Co | 研磨パッド |
JP2003048151A (ja) * | 2001-08-08 | 2003-02-18 | Rodel Nitta Co | 研磨パッド |
Family Cites Families (35)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55106769A (en) | 1979-01-31 | 1980-08-15 | Masami Masuko | Lapping method and its apparatus |
JPS62174237A (ja) * | 1985-10-19 | 1987-07-31 | Asahi Chem Ind Co Ltd | ポリオレフイン‐ポリスチレン混合樹脂発泡体 |
JPS63283857A (ja) * | 1987-05-15 | 1988-11-21 | Asahi Chem Ind Co Ltd | 研磨布 |
US5081421A (en) | 1990-05-01 | 1992-01-14 | At&T Bell Laboratories | In situ monitoring technique and apparatus for chemical/mechanical planarization endpoint detection |
US5069002A (en) | 1991-04-17 | 1991-12-03 | Micron Technology, Inc. | Apparatus for endpoint detection during mechanical planarization of semiconductor wafers |
US5196353A (en) | 1992-01-03 | 1993-03-23 | Micron Technology, Inc. | Method for controlling a semiconductor (CMP) process by measuring a surface temperature and developing a thermal image of the wafer |
JP3324235B2 (ja) | 1993-11-10 | 2002-09-17 | 株式会社日立製作所 | 加工物の研磨方法及びその研磨装置並びにそれを用いた半導体基板 |
DE69618698T2 (de) | 1995-03-28 | 2002-08-14 | Applied Materials Inc | Verfahren und Vorrichtung zur In-Situ-Kontroll und Bestimmung des Endes von chemisch-mechanischen Planiervorgänge |
US5893796A (en) | 1995-03-28 | 1999-04-13 | Applied Materials, Inc. | Forming a transparent window in a polishing pad for a chemical mechanical polishing apparatus |
US5559428A (en) | 1995-04-10 | 1996-09-24 | International Business Machines Corporation | In-situ monitoring of the change in thickness of films |
JP3321338B2 (ja) | 1995-07-24 | 2002-09-03 | 株式会社東芝 | 半導体装置の製造方法および製造装置 |
US5605760A (en) | 1995-08-21 | 1997-02-25 | Rodel, Inc. | Polishing pads |
JPH1177517A (ja) | 1997-09-02 | 1999-03-23 | Nikon Corp | 研磨部材及び研磨装置 |
JP2000254860A (ja) | 1999-03-08 | 2000-09-19 | Nikon Corp | 研磨装置 |
WO2000060650A1 (fr) * | 1999-03-31 | 2000-10-12 | Nikon Corporation | Corps de polissage, dispositif de polissage, procede de reglage du dispositif de polissage, dispositif de mesure de l'epaisseur du film poli ou du point terminal de polissage, procede de fabrication d'un dispositif a semi-conducteur |
JP2000349053A (ja) | 1999-06-07 | 2000-12-15 | Asahi Chem Ind Co Ltd | 溝付研磨パッド |
US6171181B1 (en) * | 1999-08-17 | 2001-01-09 | Rodel Holdings, Inc. | Molded polishing pad having integral window |
JP4542647B2 (ja) | 1999-09-21 | 2010-09-15 | 東洋ゴム工業株式会社 | 研磨パッド |
JP3649385B2 (ja) | 2000-01-12 | 2005-05-18 | 東洋ゴム工業株式会社 | 熱可塑性エラストマー微孔質発泡体、その製造方法および研磨シート |
JP2001358101A (ja) | 2000-06-13 | 2001-12-26 | Toray Ind Inc | 研磨パッド |
JP2002009025A (ja) | 2000-06-21 | 2002-01-11 | Toray Ind Inc | 研磨パッド |
JP3788729B2 (ja) | 2000-08-23 | 2006-06-21 | 東洋ゴム工業株式会社 | 研磨パッド |
JP2002124496A (ja) | 2000-10-18 | 2002-04-26 | Hitachi Ltd | 研磨加工の終点検出計測方法及びその装置、並びにそれを用いた半導体デバイスの製造方法及びその製造装置 |
JP3460712B2 (ja) | 2000-12-01 | 2003-10-27 | 東洋紡績株式会社 | 研磨パッド用クッション層及びそれを用いた研磨パッド |
US7192340B2 (en) * | 2000-12-01 | 2007-03-20 | Toyo Tire & Rubber Co., Ltd. | Polishing pad, method of producing the same, and cushion layer for polishing pad |
JP2002192456A (ja) | 2000-12-25 | 2002-07-10 | Toyobo Co Ltd | 研磨パッド |
JP3306417B2 (ja) | 2000-12-27 | 2002-07-24 | 東洋ゴム工業株式会社 | 半導体研磨用ポリウレタン研磨パッドを製造する方法 |
JP3359629B1 (ja) | 2001-04-09 | 2002-12-24 | 東洋紡績株式会社 | ポリウレタン組成物からなる研磨パッド |
WO2002083757A1 (fr) * | 2001-04-09 | 2002-10-24 | Toyo Boseki Kabushiki Kaisha | Composition de polyurethanne et tampon a polir |
JP3826729B2 (ja) | 2001-04-25 | 2006-09-27 | Jsr株式会社 | 半導体ウエハ用研磨パッド及びこれを備える半導体ウエハ用研磨複層体並びに半導体ウエハの研磨方法 |
JP3826728B2 (ja) | 2001-04-25 | 2006-09-27 | Jsr株式会社 | 半導体ウエハ用研磨パッド及びこれを備える半導体ウエハ用研磨複層体並びに半導体ウエハの研磨方法 |
JP4131632B2 (ja) | 2001-06-15 | 2008-08-13 | 株式会社荏原製作所 | ポリッシング装置及び研磨パッド |
JP2003133270A (ja) | 2001-10-26 | 2003-05-09 | Jsr Corp | 化学機械研磨用窓材及び研磨パッド |
KR100877386B1 (ko) * | 2001-11-13 | 2009-01-07 | 도요 고무 고교 가부시키가이샤 | 연마 패드 및 그 제조 방법 |
CN1926666A (zh) * | 2004-03-11 | 2007-03-07 | 东洋橡胶工业株式会社 | 研磨垫及半导体器件的制造方法 |
-
2003
- 2003-11-27 KR KR1020057009545A patent/KR101047933B1/ko active IP Right Grant
- 2003-11-27 WO PCT/JP2003/015128 patent/WO2004049417A1/ja active Application Filing
- 2003-11-27 TW TW092133347A patent/TW200416102A/zh not_active IP Right Cessation
- 2003-11-27 AU AU2003302299A patent/AU2003302299A1/en not_active Abandoned
- 2003-11-27 US US10/536,621 patent/US8845852B2/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001287158A (ja) * | 1999-03-31 | 2001-10-16 | Nikon Corp | 研磨部材、研磨装置、調整方法、測定方法、半導体デバイス製造方法、及び半導体デバイス |
JP2002001647A (ja) * | 2000-06-19 | 2002-01-08 | Rodel Nitta Co | 研磨パッド |
JP2003048151A (ja) * | 2001-08-08 | 2003-02-18 | Rodel Nitta Co | 研磨パッド |
Cited By (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7871309B2 (en) | 2004-12-10 | 2011-01-18 | Toyo Tire & Rubber Co., Ltd. | Polishing pad |
CN101659035B (zh) * | 2004-12-10 | 2012-07-18 | 东洋橡胶工业株式会社 | 研磨垫及使用该研磨垫的半导体器件的制造方法 |
US8148441B2 (en) | 2005-03-08 | 2012-04-03 | Toyo Tire & Rubber Co., Ltd. | Polishing pad and manufacturing method thereof |
CN101115779B (zh) * | 2005-03-08 | 2012-09-19 | 东洋橡胶工业株式会社 | 研磨垫及其制造方法 |
US8304467B2 (en) | 2005-05-17 | 2012-11-06 | Toyo Tire & Rubber Co., Ltd. | Polishing pad |
US8779020B2 (en) | 2005-05-17 | 2014-07-15 | Toyo Tire & Rubber Co., Ltd. | Polishing pad |
US8530535B2 (en) | 2005-05-17 | 2013-09-10 | Toyo Tire & Rubber Co., Ltd. | Polishing pad |
US8309466B2 (en) | 2005-08-30 | 2012-11-13 | Toyo Tire & Rubber Co., Ltd. | Polishing pad |
US8094456B2 (en) | 2006-01-10 | 2012-01-10 | Toyo Tire & Rubber Co., Ltd. | Polishing pad |
US20120108149A1 (en) * | 2006-04-19 | 2012-05-03 | Toyo Tire & Rubber Co., Ltd. | Method for manufacturing polishing pad |
US8398794B2 (en) * | 2006-04-19 | 2013-03-19 | Toyo Tire & Rubber Co., Ltd. | Method for manufacturing polishing pad |
US8500932B2 (en) | 2006-04-19 | 2013-08-06 | Toyo Tire & Rubber Co., Ltd. | Method for manufacturing polishing pad |
US9050707B2 (en) | 2006-04-19 | 2015-06-09 | Toyo Tire & Rubber Co., Ltd. | Method for manufacturing polishing pad |
US7927183B2 (en) | 2006-05-17 | 2011-04-19 | Toyo Tire & Rubber Co., Ltd. | Polishing pad |
US7874894B2 (en) | 2006-05-17 | 2011-01-25 | Toyo Tire & Rubber Co., Ltd. | Polishing pad |
US8993648B2 (en) | 2006-08-28 | 2015-03-31 | Toyo Tire & Rubber Co., Ltd. | Polishing pad |
US9358661B2 (en) | 2006-08-28 | 2016-06-07 | Rohm And Haas Electronic Materials Cmp Holdings, Inc. | Polishing pad |
US8303372B2 (en) | 2006-08-31 | 2012-11-06 | Toyo Tire & Rubber Co., Ltd. | Polishing pad |
US8865785B2 (en) | 2007-03-28 | 2014-10-21 | Toyo Tire & Rubber Co., Ltd. | Polishing pad |
CN108369906A (zh) * | 2015-12-18 | 2018-08-03 | 胜高股份有限公司 | 晶圆抛光方法及抛光装置 |
KR20190017034A (ko) * | 2016-07-29 | 2019-02-19 | 주식회사 쿠라레 | 연마 패드 및 그것을 사용한 연마 방법 |
KR102170859B1 (ko) | 2016-07-29 | 2020-10-28 | 주식회사 쿠라레 | 연마 패드 및 그것을 사용한 연마 방법 |
Also Published As
Publication number | Publication date |
---|---|
TWI325800B (ja) | 2010-06-11 |
US20060037699A1 (en) | 2006-02-23 |
US8845852B2 (en) | 2014-09-30 |
TW200416102A (en) | 2004-09-01 |
AU2003302299A1 (en) | 2004-06-18 |
KR20050085168A (ko) | 2005-08-29 |
KR101047933B1 (ko) | 2011-07-11 |
AU2003302299A8 (en) | 2004-06-18 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2004049417A1 (ja) | 研磨パッド及び半導体デバイスの製造方法 | |
JP4884726B2 (ja) | 積層研磨パッドの製造方法 | |
KR101120533B1 (ko) | 연마 패드 | |
KR100817233B1 (ko) | 연마 패드 및 반도체 디바이스의 제조 방법 | |
JP3754436B2 (ja) | 研磨パッドおよびそれを使用する半導体デバイスの製造方法 | |
WO2011118419A1 (ja) | 積層研磨パッド | |
US9156126B2 (en) | Polishing pad | |
JP5288715B2 (ja) | 研磨パッド | |
WO2014119367A1 (ja) | 研磨パッド | |
JP3452265B1 (ja) | 研磨シート用高分子材料、研磨シート、及び研磨パッド | |
JP2006187837A (ja) | 研磨パッド | |
JP4744087B2 (ja) | 研磨パッド及び半導体デバイスの製造方法 | |
JP4859093B2 (ja) | 積層研磨パッド及びその製造方法 | |
JP4849587B2 (ja) | 研磨パッドおよび半導体デバイスの製造方法 | |
JP4890744B2 (ja) | 研磨パッドおよび半導体デバイスの製造方法 | |
JP2005322790A (ja) | 研磨パッド及び半導体デバイスの製造方法 | |
JP3582790B2 (ja) | 研磨パッド及び半導体デバイスの製造方法 | |
JP4514199B2 (ja) | 研磨パッド及び半導体デバイスの製造方法 | |
JP2006128563A (ja) | 半導体ウエハ研磨用研磨パッドおよび半導体デバイスの製造方法 | |
JP4941735B2 (ja) | 研磨パッドの製造方法 | |
JP3497156B1 (ja) | 研磨シート用発泡体、その製造方法、研磨シート、及び研磨パッド | |
JP2007181907A (ja) | 積層研磨パッド | |
JP2004115617A (ja) | 研磨シート用ポリウレタン発泡体の製造方法、ポリウレタン発泡体、研磨シート、及び研磨パッド | |
JP2005322789A (ja) | 研磨パッド及び半導体デバイスの製造方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): BW GH GM KE LS MW MZ SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LU MC NL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: 20038A41028 Country of ref document: CN |
|
ENP | Entry into the national phase |
Ref document number: 2006037699 Country of ref document: US Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 1020057009545 Country of ref document: KR Ref document number: 10536621 Country of ref document: US |
|
WWP | Wipo information: published in national office |
Ref document number: 1020057009545 Country of ref document: KR |
|
122 | Ep: pct application non-entry in european phase | ||
WWP | Wipo information: published in national office |
Ref document number: 10536621 Country of ref document: US |