WO2018066480A1 - 半導体加工用粘着テープおよび半導体装置の製造方法 - Google Patents
半導体加工用粘着テープおよび半導体装置の製造方法 Download PDFInfo
- Publication number
- WO2018066480A1 WO2018066480A1 PCT/JP2017/035599 JP2017035599W WO2018066480A1 WO 2018066480 A1 WO2018066480 A1 WO 2018066480A1 JP 2017035599 W JP2017035599 W JP 2017035599W WO 2018066480 A1 WO2018066480 A1 WO 2018066480A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- meth
- buffer layer
- acrylate
- pressure
- sensitive adhesive
- Prior art date
Links
- 239000004065 semiconductor Substances 0.000 title claims abstract description 196
- 239000002390 adhesive tape Substances 0.000 title claims abstract description 111
- 238000012545 processing Methods 0.000 title claims abstract description 60
- 238000004519 manufacturing process Methods 0.000 title claims description 23
- 239000012790 adhesive layer Substances 0.000 claims abstract description 55
- 239000010410 layer Substances 0.000 claims description 306
- 239000004820 Pressure-sensitive adhesive Substances 0.000 claims description 181
- 238000003860 storage Methods 0.000 claims description 84
- 239000000463 material Substances 0.000 claims description 80
- 238000000034 method Methods 0.000 claims description 52
- 230000008569 process Effects 0.000 claims description 12
- 239000000758 substrate Substances 0.000 abstract description 34
- 238000005336 cracking Methods 0.000 abstract 1
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 146
- 239000000203 mixture Substances 0.000 description 100
- 150000001875 compounds Chemical class 0.000 description 95
- 230000001070 adhesive effect Effects 0.000 description 58
- 238000000227 grinding Methods 0.000 description 56
- -1 polyethylene terephthalate Polymers 0.000 description 56
- 239000000853 adhesive Substances 0.000 description 52
- 125000000217 alkyl group Chemical group 0.000 description 49
- 239000000178 monomer Substances 0.000 description 48
- 239000004840 adhesive resin Substances 0.000 description 43
- 229920006223 adhesive resin Polymers 0.000 description 43
- 229920000058 polyacrylate Polymers 0.000 description 38
- 125000000524 functional group Chemical group 0.000 description 34
- 239000011254 layer-forming composition Substances 0.000 description 34
- 229920005989 resin Polymers 0.000 description 34
- 239000011347 resin Substances 0.000 description 34
- 229920000178 Acrylic resin Polymers 0.000 description 31
- 239000004925 Acrylic resin Substances 0.000 description 31
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 31
- 239000000047 product Substances 0.000 description 28
- 238000000576 coating method Methods 0.000 description 26
- 239000003431 cross linking reagent Substances 0.000 description 25
- 239000011248 coating agent Substances 0.000 description 24
- 239000003999 initiator Substances 0.000 description 24
- 238000005259 measurement Methods 0.000 description 24
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 21
- 125000004432 carbon atom Chemical group C* 0.000 description 20
- 229920005672 polyolefin resin Polymers 0.000 description 19
- OMIGHNLMNHATMP-UHFFFAOYSA-N 2-hydroxyethyl prop-2-enoate Chemical compound OCCOC(=O)C=C OMIGHNLMNHATMP-UHFFFAOYSA-N 0.000 description 17
- 150000001252 acrylic acid derivatives Chemical class 0.000 description 17
- UHESRSKEBRADOO-UHFFFAOYSA-N ethyl carbamate;prop-2-enoic acid Chemical compound OC(=O)C=C.CCOC(N)=O UHESRSKEBRADOO-UHFFFAOYSA-N 0.000 description 17
- 125000003647 acryloyl group Chemical group O=C([*])C([H])=C([H])[H] 0.000 description 16
- 230000000052 comparative effect Effects 0.000 description 15
- 229920005862 polyol Polymers 0.000 description 15
- 238000002360 preparation method Methods 0.000 description 15
- CQEYYJKEWSMYFG-UHFFFAOYSA-N butyl acrylate Chemical compound CCCCOC(=O)C=C CQEYYJKEWSMYFG-UHFFFAOYSA-N 0.000 description 14
- 239000000654 additive Substances 0.000 description 13
- 238000012360 testing method Methods 0.000 description 13
- 125000004429 atom Chemical group 0.000 description 12
- 230000015572 biosynthetic process Effects 0.000 description 12
- 239000012948 isocyanate Substances 0.000 description 12
- RBQRWNWVPQDTJJ-UHFFFAOYSA-N methacryloyloxyethyl isocyanate Chemical compound CC(=C)C(=O)OCCN=C=O RBQRWNWVPQDTJJ-UHFFFAOYSA-N 0.000 description 12
- 229920000139 polyethylene terephthalate Polymers 0.000 description 12
- 239000005020 polyethylene terephthalate Substances 0.000 description 12
- 229920000642 polymer Polymers 0.000 description 12
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 description 11
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 11
- 229920001684 low density polyethylene Polymers 0.000 description 10
- 239000004702 low-density polyethylene Substances 0.000 description 10
- GUCYFKSBFREPBC-UHFFFAOYSA-N [phenyl-(2,4,6-trimethylbenzoyl)phosphoryl]-(2,4,6-trimethylphenyl)methanone Chemical compound CC1=CC(C)=CC(C)=C1C(=O)P(=O)(C=1C=CC=CC=1)C(=O)C1=C(C)C=C(C)C=C1C GUCYFKSBFREPBC-UHFFFAOYSA-N 0.000 description 9
- 125000003277 amino group Chemical group 0.000 description 9
- 230000007423 decrease Effects 0.000 description 9
- 150000002009 diols Chemical class 0.000 description 9
- 125000003700 epoxy group Chemical group 0.000 description 9
- 125000000623 heterocyclic group Chemical group 0.000 description 9
- 150000002513 isocyanates Chemical class 0.000 description 9
- 229920000728 polyester Polymers 0.000 description 9
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 description 8
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 8
- 125000002723 alicyclic group Chemical group 0.000 description 8
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 8
- 150000003077 polyols Chemical class 0.000 description 8
- 239000007787 solid Substances 0.000 description 8
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 7
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 7
- 230000000694 effects Effects 0.000 description 7
- 229920001971 elastomer Polymers 0.000 description 7
- 239000003960 organic solvent Substances 0.000 description 7
- 239000004014 plasticizer Substances 0.000 description 7
- 229920000515 polycarbonate Polymers 0.000 description 7
- 239000004417 polycarbonate Substances 0.000 description 7
- 238000006116 polymerization reaction Methods 0.000 description 7
- XMLYCEVDHLAQEL-UHFFFAOYSA-N 2-hydroxy-2-methyl-1-phenylpropan-1-one Chemical compound CC(C)(O)C(=O)C1=CC=CC=C1 XMLYCEVDHLAQEL-UHFFFAOYSA-N 0.000 description 6
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 6
- 239000004677 Nylon Substances 0.000 description 6
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 6
- MPIAGWXWVAHQBB-UHFFFAOYSA-N [3-prop-2-enoyloxy-2-[[3-prop-2-enoyloxy-2,2-bis(prop-2-enoyloxymethyl)propoxy]methyl]-2-(prop-2-enoyloxymethyl)propyl] prop-2-enoate Chemical compound C=CC(=O)OCC(COC(=O)C=C)(COC(=O)C=C)COCC(COC(=O)C=C)(COC(=O)C=C)COC(=O)C=C MPIAGWXWVAHQBB-UHFFFAOYSA-N 0.000 description 6
- ISAOCJYIOMOJEB-UHFFFAOYSA-N benzoin Chemical class C=1C=CC=CC=1C(O)C(=O)C1=CC=CC=C1 ISAOCJYIOMOJEB-UHFFFAOYSA-N 0.000 description 6
- 229920001577 copolymer Polymers 0.000 description 6
- RJLZSKYNYLYCNY-UHFFFAOYSA-N ethyl carbamate;isocyanic acid Chemical group N=C=O.CCOC(N)=O RJLZSKYNYLYCNY-UHFFFAOYSA-N 0.000 description 6
- 125000003055 glycidyl group Chemical group C(C1CO1)* 0.000 description 6
- 230000001771 impaired effect Effects 0.000 description 6
- 229920001778 nylon Polymers 0.000 description 6
- 125000001424 substituent group Chemical group 0.000 description 6
- HHQAGBQXOWLTLL-UHFFFAOYSA-N (2-hydroxy-3-phenoxypropyl) prop-2-enoate Chemical compound C=CC(=O)OCC(O)COC1=CC=CC=C1 HHQAGBQXOWLTLL-UHFFFAOYSA-N 0.000 description 5
- 125000000954 2-hydroxyethyl group Chemical group [H]C([*])([H])C([H])([H])O[H] 0.000 description 5
- 229920002799 BoPET Polymers 0.000 description 5
- 239000005058 Isophorone diisocyanate Substances 0.000 description 5
- 125000003368 amide group Chemical group 0.000 description 5
- 239000003963 antioxidant agent Substances 0.000 description 5
- 239000000945 filler Substances 0.000 description 5
- NIMLQBUJDJZYEJ-UHFFFAOYSA-N isophorone diisocyanate Chemical compound CC1(C)CC(N=C=O)CC(C)(CN=C=O)C1 NIMLQBUJDJZYEJ-UHFFFAOYSA-N 0.000 description 5
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 5
- 229910052753 mercury Inorganic materials 0.000 description 5
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 description 5
- 229920001296 polysiloxane Polymers 0.000 description 5
- 239000005060 rubber Substances 0.000 description 5
- 239000002356 single layer Substances 0.000 description 5
- 238000003786 synthesis reaction Methods 0.000 description 5
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 5
- PSGCQDPCAWOCSH-UHFFFAOYSA-N (4,7,7-trimethyl-3-bicyclo[2.2.1]heptanyl) prop-2-enoate Chemical compound C1CC2(C)C(OC(=O)C=C)CC1C2(C)C PSGCQDPCAWOCSH-UHFFFAOYSA-N 0.000 description 4
- OZAIFHULBGXAKX-UHFFFAOYSA-N 2-(2-cyanopropan-2-yldiazenyl)-2-methylpropanenitrile Chemical compound N#CC(C)(C)N=NC(C)(C)C#N OZAIFHULBGXAKX-UHFFFAOYSA-N 0.000 description 4
- SXIFAEWFOJETOA-UHFFFAOYSA-N 4-hydroxy-butyl Chemical group [CH2]CCCO SXIFAEWFOJETOA-UHFFFAOYSA-N 0.000 description 4
- 241001050985 Disco Species 0.000 description 4
- VZCYOOQTPOCHFL-OWOJBTEDSA-N Fumaric acid Chemical compound OC(=O)\C=C\C(O)=O VZCYOOQTPOCHFL-OWOJBTEDSA-N 0.000 description 4
- 239000004743 Polypropylene Substances 0.000 description 4
- HVVWZTWDBSEWIH-UHFFFAOYSA-N [2-(hydroxymethyl)-3-prop-2-enoyloxy-2-(prop-2-enoyloxymethyl)propyl] prop-2-enoate Chemical compound C=CC(=O)OCC(CO)(COC(=O)C=C)COC(=O)C=C HVVWZTWDBSEWIH-UHFFFAOYSA-N 0.000 description 4
- XXROGKLTLUQVRX-UHFFFAOYSA-N allyl alcohol Chemical compound OCC=C XXROGKLTLUQVRX-UHFFFAOYSA-N 0.000 description 4
- 239000002216 antistatic agent Substances 0.000 description 4
- 230000001588 bifunctional effect Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- 125000002768 hydroxyalkyl group Chemical group 0.000 description 4
- 230000001678 irradiating effect Effects 0.000 description 4
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 4
- 229920001155 polypropylene Polymers 0.000 description 4
- MUTNCGKQJGXKEM-UHFFFAOYSA-N tamibarotene Chemical compound C=1C=C2C(C)(C)CCC(C)(C)C2=CC=1NC(=O)C1=CC=C(C(O)=O)C=C1 MUTNCGKQJGXKEM-UHFFFAOYSA-N 0.000 description 4
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 4
- TXBCBTDQIULDIA-UHFFFAOYSA-N 2-[[3-hydroxy-2,2-bis(hydroxymethyl)propoxy]methyl]-2-(hydroxymethyl)propane-1,3-diol Chemical compound OCC(CO)(CO)COCC(CO)(CO)CO TXBCBTDQIULDIA-UHFFFAOYSA-N 0.000 description 3
- 125000003903 2-propenyl group Chemical group [H]C([*])([H])C([H])=C([H])[H] 0.000 description 3
- QOXOZONBQWIKDA-UHFFFAOYSA-N 3-hydroxypropyl Chemical group [CH2]CCO QOXOZONBQWIKDA-UHFFFAOYSA-N 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 3
- 239000004593 Epoxy Substances 0.000 description 3
- IMROMDMJAWUWLK-UHFFFAOYSA-N Ethenol Chemical compound OC=C IMROMDMJAWUWLK-UHFFFAOYSA-N 0.000 description 3
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- 239000005057 Hexamethylene diisocyanate Substances 0.000 description 3
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 3
- 239000004721 Polyphenylene oxide Substances 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 230000003078 antioxidant effect Effects 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 239000003054 catalyst Substances 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000004132 cross linking Methods 0.000 description 3
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 3
- 239000000975 dye Substances 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- RRAMGCGOFNQTLD-UHFFFAOYSA-N hexamethylene diisocyanate Chemical compound O=C=NCCCCCCN=C=O RRAMGCGOFNQTLD-UHFFFAOYSA-N 0.000 description 3
- VLKZOEOYAKHREP-UHFFFAOYSA-N hexane Substances CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 230000000704 physical effect Effects 0.000 description 3
- 239000000049 pigment Substances 0.000 description 3
- 238000005498 polishing Methods 0.000 description 3
- 229920013716 polyethylene resin Polymers 0.000 description 3
- 230000000379 polymerizing effect Effects 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- 229920002050 silicone resin Polymers 0.000 description 3
- DTGKSKDOIYIVQL-WEDXCCLWSA-N (+)-borneol Chemical group C1C[C@@]2(C)[C@@H](O)C[C@@H]1C2(C)C DTGKSKDOIYIVQL-WEDXCCLWSA-N 0.000 description 2
- QEGNUYASOUJEHD-UHFFFAOYSA-N 1,1-dimethylcyclohexane Chemical compound CC1(C)CCCCC1 QEGNUYASOUJEHD-UHFFFAOYSA-N 0.000 description 2
- MYRTYDVEIRVNKP-UHFFFAOYSA-N 1,2-Divinylbenzene Chemical compound C=CC1=CC=CC=C1C=C MYRTYDVEIRVNKP-UHFFFAOYSA-N 0.000 description 2
- FKTHNVSLHLHISI-UHFFFAOYSA-N 1,2-bis(isocyanatomethyl)benzene Chemical compound O=C=NCC1=CC=CC=C1CN=C=O FKTHNVSLHLHISI-UHFFFAOYSA-N 0.000 description 2
- QWUWMCYKGHVNAV-UHFFFAOYSA-N 1,2-dihydrostilbene Chemical group C=1C=CC=CC=1CCC1=CC=CC=C1 QWUWMCYKGHVNAV-UHFFFAOYSA-N 0.000 description 2
- MSAHTMIQULFMRG-UHFFFAOYSA-N 1,2-diphenyl-2-propan-2-yloxyethanone Chemical compound C=1C=CC=CC=1C(OC(C)C)C(=O)C1=CC=CC=C1 MSAHTMIQULFMRG-UHFFFAOYSA-N 0.000 description 2
- BOCJQSFSGAZAPQ-UHFFFAOYSA-N 1-chloroanthracene-9,10-dione Chemical compound O=C1C2=CC=CC=C2C(=O)C2=C1C=CC=C2Cl BOCJQSFSGAZAPQ-UHFFFAOYSA-N 0.000 description 2
- 239000012956 1-hydroxycyclohexylphenyl-ketone Substances 0.000 description 2
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 2
- JAHNSTQSQJOJLO-UHFFFAOYSA-N 2-(3-fluorophenyl)-1h-imidazole Chemical compound FC1=CC=CC(C=2NC=CN=2)=C1 JAHNSTQSQJOJLO-UHFFFAOYSA-N 0.000 description 2
- JESXATFQYMPTNL-UHFFFAOYSA-N 2-ethenylphenol Chemical compound OC1=CC=CC=C1C=C JESXATFQYMPTNL-UHFFFAOYSA-N 0.000 description 2
- KMNCBSZOIQAUFX-UHFFFAOYSA-N 2-ethoxy-1,2-diphenylethanone Chemical compound C=1C=CC=CC=1C(OCC)C(=O)C1=CC=CC=C1 KMNCBSZOIQAUFX-UHFFFAOYSA-N 0.000 description 2
- DPNXHTDWGGVXID-UHFFFAOYSA-N 2-isocyanatoethyl prop-2-enoate Chemical compound C=CC(=O)OCCN=C=O DPNXHTDWGGVXID-UHFFFAOYSA-N 0.000 description 2
- BQZJOQXSCSZQPS-UHFFFAOYSA-N 2-methoxy-1,2-diphenylethanone Chemical compound C=1C=CC=CC=1C(OC)C(=O)C1=CC=CC=C1 BQZJOQXSCSZQPS-UHFFFAOYSA-N 0.000 description 2
- SBWOBTUYQXLKSS-UHFFFAOYSA-N 3-(2-methylprop-2-enoyloxy)propanoic acid Chemical compound CC(=C)C(=O)OCCC(O)=O SBWOBTUYQXLKSS-UHFFFAOYSA-N 0.000 description 2
- BUZICZZQJDLXJN-UHFFFAOYSA-N 3-azaniumyl-4-hydroxybutanoate Chemical compound OCC(N)CC(O)=O BUZICZZQJDLXJN-UHFFFAOYSA-N 0.000 description 2
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- QSJXEFYPDANLFS-UHFFFAOYSA-N Diacetyl Chemical group CC(=O)C(C)=O QSJXEFYPDANLFS-UHFFFAOYSA-N 0.000 description 2
- SNRUBQQJIBEYMU-UHFFFAOYSA-N Dodecane Natural products CCCCCCCCCCCC SNRUBQQJIBEYMU-UHFFFAOYSA-N 0.000 description 2
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical compound CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 description 2
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 2
- YNAVUWVOSKDBBP-UHFFFAOYSA-N Morpholine Chemical compound C1COCCN1 YNAVUWVOSKDBBP-UHFFFAOYSA-N 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 2
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 2
- 235000000126 Styrax benzoin Nutrition 0.000 description 2
- 244000028419 Styrax benzoin Species 0.000 description 2
- 235000008411 Sumatra benzointree Nutrition 0.000 description 2
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 2
- XSTXAVWGXDQKEL-UHFFFAOYSA-N Trichloroethylene Chemical compound ClC=C(Cl)Cl XSTXAVWGXDQKEL-UHFFFAOYSA-N 0.000 description 2
- ZJCCRDAZUWHFQH-UHFFFAOYSA-N Trimethylolpropane Chemical compound CCC(CO)(CO)CO ZJCCRDAZUWHFQH-UHFFFAOYSA-N 0.000 description 2
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 2
- 239000006096 absorbing agent Substances 0.000 description 2
- 150000008062 acetophenones Chemical class 0.000 description 2
- 239000003522 acrylic cement Substances 0.000 description 2
- ORILYTVJVMAKLC-UHFFFAOYSA-N adamantane Chemical compound C1C(C2)CC3CC1CC2C3 ORILYTVJVMAKLC-UHFFFAOYSA-N 0.000 description 2
- 150000001298 alcohols Chemical class 0.000 description 2
- 125000005250 alkyl acrylate group Chemical group 0.000 description 2
- XYLMUPLGERFSHI-UHFFFAOYSA-N alpha-Methylstyrene Chemical compound CC(=C)C1=CC=CC=C1 XYLMUPLGERFSHI-UHFFFAOYSA-N 0.000 description 2
- 150000001412 amines Chemical class 0.000 description 2
- 150000008064 anhydrides Chemical class 0.000 description 2
- 125000003118 aryl group Chemical group 0.000 description 2
- 229960002130 benzoin Drugs 0.000 description 2
- MQDJYUACMFCOFT-UHFFFAOYSA-N bis[2-(1-hydroxycyclohexyl)phenyl]methanone Chemical compound C=1C=CC=C(C(=O)C=2C(=CC=CC=2)C2(O)CCCCC2)C=1C1(O)CCCCC1 MQDJYUACMFCOFT-UHFFFAOYSA-N 0.000 description 2
- 239000013522 chelant Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- HNEGQIOMVPPMNR-IHWYPQMZSA-N citraconic acid Chemical compound OC(=O)C(/C)=C\C(O)=O HNEGQIOMVPPMNR-IHWYPQMZSA-N 0.000 description 2
- 229940018557 citraconic acid Drugs 0.000 description 2
- 239000008199 coating composition Substances 0.000 description 2
- 239000003086 colorant Substances 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- LDHQCZJRKDOVOX-NSCUHMNNSA-N crotonic acid Chemical compound C\C=C\C(O)=O LDHQCZJRKDOVOX-NSCUHMNNSA-N 0.000 description 2
- KOMDZQSPRDYARS-UHFFFAOYSA-N cyclopenta-1,3-diene titanium Chemical class [Ti].C1C=CC=C1.C1C=CC=C1 KOMDZQSPRDYARS-UHFFFAOYSA-N 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 125000002704 decyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 2
- 150000001991 dicarboxylic acids Chemical class 0.000 description 2
- 238000007607 die coating method Methods 0.000 description 2
- 125000003438 dodecyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 2
- 239000000806 elastomer Substances 0.000 description 2
- GFJVXXWOPWLRNU-UHFFFAOYSA-N ethenyl formate Chemical compound C=COC=O GFJVXXWOPWLRNU-UHFFFAOYSA-N 0.000 description 2
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 2
- 239000005038 ethylene vinyl acetate Substances 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 239000001530 fumaric acid Substances 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000007756 gravure coating Methods 0.000 description 2
- 235000019382 gum benzoic Nutrition 0.000 description 2
- 229920001903 high density polyethylene Polymers 0.000 description 2
- 239000004700 high-density polyethylene Substances 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 239000003112 inhibitor Substances 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- IQPQWNKOIGAROB-UHFFFAOYSA-N isocyanate group Chemical group [N-]=C=O IQPQWNKOIGAROB-UHFFFAOYSA-N 0.000 description 2
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 description 2
- 239000011976 maleic acid Substances 0.000 description 2
- 238000000691 measurement method Methods 0.000 description 2
- 229920001179 medium density polyethylene Polymers 0.000 description 2
- 239000004701 medium-density polyethylene Substances 0.000 description 2
- LVHBHZANLOWSRM-UHFFFAOYSA-N methylenebutanedioic acid Natural products OC(=O)CC(=C)C(O)=O LVHBHZANLOWSRM-UHFFFAOYSA-N 0.000 description 2
- 150000002763 monocarboxylic acids Chemical class 0.000 description 2
- 125000004108 n-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 2
- 125000004123 n-propyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])* 0.000 description 2
- 125000001400 nonyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 2
- 239000003504 photosensitizing agent Substances 0.000 description 2
- 229920003207 poly(ethylene-2,6-naphthalate) Polymers 0.000 description 2
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 2
- 229920002647 polyamide Polymers 0.000 description 2
- 229920002857 polybutadiene Polymers 0.000 description 2
- 229920001707 polybutylene terephthalate Polymers 0.000 description 2
- 229920006267 polyester film Polymers 0.000 description 2
- 229920000570 polyether Polymers 0.000 description 2
- 229920001223 polyethylene glycol Polymers 0.000 description 2
- 239000011112 polyethylene naphthalate Substances 0.000 description 2
- 229920001721 polyimide Polymers 0.000 description 2
- YOSXAXYCARLZTR-UHFFFAOYSA-N prop-2-enoyl isocyanate Chemical compound C=CC(=O)N=C=O YOSXAXYCARLZTR-UHFFFAOYSA-N 0.000 description 2
- HJWLCRVIBGQPNF-UHFFFAOYSA-N prop-2-enylbenzene Chemical compound C=CCC1=CC=CC=C1 HJWLCRVIBGQPNF-UHFFFAOYSA-N 0.000 description 2
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 150000004053 quinones Chemical class 0.000 description 2
- 239000011342 resin composition Substances 0.000 description 2
- 125000006413 ring segment Chemical group 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 238000010345 tape casting Methods 0.000 description 2
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 2
- YRHRIQCWCFGUEQ-UHFFFAOYSA-N thioxanthen-9-one Chemical class C1=CC=C2C(=O)C3=CC=CC=C3SC2=C1 YRHRIQCWCFGUEQ-UHFFFAOYSA-N 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
- LDHQCZJRKDOVOX-UHFFFAOYSA-N trans-crotonic acid Natural products CC=CC(O)=O LDHQCZJRKDOVOX-UHFFFAOYSA-N 0.000 description 2
- 239000006097 ultraviolet radiation absorber Substances 0.000 description 2
- 125000002948 undecyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 2
- PUPZLCDOIYMWBV-UHFFFAOYSA-N (+/-)-1,3-Butanediol Chemical compound CC(O)CCO PUPZLCDOIYMWBV-UHFFFAOYSA-N 0.000 description 1
- 229920003067 (meth)acrylic acid ester copolymer Polymers 0.000 description 1
- RYHBNJHYFVUHQT-UHFFFAOYSA-N 1,4-Dioxane Chemical compound C1COCCO1 RYHBNJHYFVUHQT-UHFFFAOYSA-N 0.000 description 1
- OVBFMUAFNIIQAL-UHFFFAOYSA-N 1,4-diisocyanatobutane Chemical compound O=C=NCCCCN=C=O OVBFMUAFNIIQAL-UHFFFAOYSA-N 0.000 description 1
- VZXPHDGHQXLXJC-UHFFFAOYSA-N 1,6-diisocyanato-5,6-dimethylheptane Chemical compound O=C=NC(C)(C)C(C)CCCCN=C=O VZXPHDGHQXLXJC-UHFFFAOYSA-N 0.000 description 1
- JWYVGKFDLWWQJX-UHFFFAOYSA-N 1-ethenylazepan-2-one Chemical compound C=CN1CCCCCC1=O JWYVGKFDLWWQJX-UHFFFAOYSA-N 0.000 description 1
- STMDPCBYJCIZOD-UHFFFAOYSA-N 2-(2,4-dinitroanilino)-4-methylpentanoic acid Chemical compound CC(C)CC(C(O)=O)NC1=CC=C([N+]([O-])=O)C=C1[N+]([O-])=O STMDPCBYJCIZOD-UHFFFAOYSA-N 0.000 description 1
- BLDFSDCBQJUWFG-UHFFFAOYSA-N 2-(methylamino)-1,2-diphenylethanol Chemical compound C=1C=CC=CC=1C(NC)C(O)C1=CC=CC=C1 BLDFSDCBQJUWFG-UHFFFAOYSA-N 0.000 description 1
- CUGZWHZWSVUSBE-UHFFFAOYSA-N 2-(oxiran-2-ylmethoxy)ethanol Chemical compound OCCOCC1CO1 CUGZWHZWSVUSBE-UHFFFAOYSA-N 0.000 description 1
- VUIWJRYTWUGOOF-UHFFFAOYSA-N 2-ethenoxyethanol Chemical compound OCCOC=C VUIWJRYTWUGOOF-UHFFFAOYSA-N 0.000 description 1
- ZCSHACFHMFHFKK-UHFFFAOYSA-N 2-methyl-1,3,5-trinitrobenzene;2,4,6-trinitro-1,3,5-triazinane Chemical compound [O-][N+](=O)C1NC([N+]([O-])=O)NC([N+]([O-])=O)N1.CC1=C([N+]([O-])=O)C=C([N+]([O-])=O)C=C1[N+]([O-])=O ZCSHACFHMFHFKK-UHFFFAOYSA-N 0.000 description 1
- 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 1
- HMBNQNDUEFFFNZ-UHFFFAOYSA-N 4-ethenoxybutan-1-ol Chemical compound OCCCCOC=C HMBNQNDUEFFFNZ-UHFFFAOYSA-N 0.000 description 1
- WSMQKESQZFQMFW-UHFFFAOYSA-N 5-methyl-pyrazole-3-carboxylic acid Chemical compound CC1=CC(C(O)=O)=NN1 WSMQKESQZFQMFW-UHFFFAOYSA-N 0.000 description 1
- 229920002126 Acrylic acid copolymer Polymers 0.000 description 1
- JBRZTFJDHDCESZ-UHFFFAOYSA-N AsGa Chemical compound [As]#[Ga] JBRZTFJDHDCESZ-UHFFFAOYSA-N 0.000 description 1
- NOWKCMXCCJGMRR-UHFFFAOYSA-N Aziridine Chemical compound C1CN1 NOWKCMXCCJGMRR-UHFFFAOYSA-N 0.000 description 1
- 229930185605 Bisphenol Natural products 0.000 description 1
- XDTMQSROBMDMFD-UHFFFAOYSA-N Cyclohexane Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 229910002601 GaN Inorganic materials 0.000 description 1
- 229910001218 Gallium arsenide Inorganic materials 0.000 description 1
- JMASRVWKEDWRBT-UHFFFAOYSA-N Gallium nitride Chemical compound [Ga]#N JMASRVWKEDWRBT-UHFFFAOYSA-N 0.000 description 1
- GPXJNWSHGFTCBW-UHFFFAOYSA-N Indium phosphide Chemical compound [In]#P GPXJNWSHGFTCBW-UHFFFAOYSA-N 0.000 description 1
- CERQOIWHTDAKMF-UHFFFAOYSA-M Methacrylate Chemical compound CC(=C)C([O-])=O CERQOIWHTDAKMF-UHFFFAOYSA-M 0.000 description 1
- WHNWPMSKXPGLAX-UHFFFAOYSA-N N-Vinyl-2-pyrrolidone Chemical compound C=CN1CCCC1=O WHNWPMSKXPGLAX-UHFFFAOYSA-N 0.000 description 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- 229930182556 Polyacetal Natural products 0.000 description 1
- 239000005062 Polybutadiene Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000002202 Polyethylene glycol Substances 0.000 description 1
- 239000004642 Polyimide Substances 0.000 description 1
- 239000004734 Polyphenylene sulfide Substances 0.000 description 1
- 239000004902 Softening Agent Substances 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 239000004708 Very-low-density polyethylene Substances 0.000 description 1
- 150000003926 acrylamides Chemical class 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 125000001931 aliphatic group Chemical group 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 229920000180 alkyd Polymers 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000013556 antirust agent Substances 0.000 description 1
- 238000007611 bar coating method Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- FFBHFFJDDLITSX-UHFFFAOYSA-N benzyl N-[2-hydroxy-4-(3-oxomorpholin-4-yl)phenyl]carbamate Chemical compound OC1=C(NC(=O)OCC2=CC=CC=C2)C=CC(=C1)N1CCOCC1=O FFBHFFJDDLITSX-UHFFFAOYSA-N 0.000 description 1
- LKMCJXXOBRCATQ-UHFFFAOYSA-N benzylsulfanylbenzene Chemical compound C=1C=CC=CC=1CSC1=CC=CC=C1 LKMCJXXOBRCATQ-UHFFFAOYSA-N 0.000 description 1
- JGCWKVKYRNXTMD-UHFFFAOYSA-N bicyclo[2.2.1]heptane;isocyanic acid Chemical compound N=C=O.N=C=O.C1CC2CCC1C2 JGCWKVKYRNXTMD-UHFFFAOYSA-N 0.000 description 1
- JZQAAQZDDMEFGZ-UHFFFAOYSA-N bis(ethenyl) hexanedioate Chemical compound C=COC(=O)CCCCC(=O)OC=C JZQAAQZDDMEFGZ-UHFFFAOYSA-N 0.000 description 1
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 description 1
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 150000001721 carbon Chemical group 0.000 description 1
- 239000011203 carbon fibre reinforced carbon Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000003851 corona treatment Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 150000001925 cycloalkenes Chemical class 0.000 description 1
- 125000000113 cyclohexyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C1([H])[H] 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- KORSJDCBLAPZEQ-UHFFFAOYSA-N dicyclohexylmethane-4,4'-diisocyanate Chemical compound C1CC(N=C=O)CCC1CC1CCC(N=C=O)CC1 KORSJDCBLAPZEQ-UHFFFAOYSA-N 0.000 description 1
- 125000005442 diisocyanate group Chemical group 0.000 description 1
- 238000009820 dry lamination Methods 0.000 description 1
- BXKDSDJJOVIHMX-UHFFFAOYSA-N edrophonium chloride Chemical compound [Cl-].CC[N+](C)(C)C1=CC=CC(O)=C1 BXKDSDJJOVIHMX-UHFFFAOYSA-N 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- XXMIOPMDWAUFGU-UHFFFAOYSA-N hexane-1,6-diol Chemical compound OCCCCCCO XXMIOPMDWAUFGU-UHFFFAOYSA-N 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- GQYHUHYESMUTHG-UHFFFAOYSA-N lithium niobate Chemical compound [Li+].[O-][Nb](=O)=O GQYHUHYESMUTHG-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- ZQXSMRAEXCEDJD-UHFFFAOYSA-N n-ethenylformamide Chemical compound C=CNC=O ZQXSMRAEXCEDJD-UHFFFAOYSA-N 0.000 description 1
- SLCVBVWXLSEKPL-UHFFFAOYSA-N neopentyl glycol Chemical compound OCC(C)(C)CO SLCVBVWXLSEKPL-UHFFFAOYSA-N 0.000 description 1
- 125000004433 nitrogen atom Chemical group N* 0.000 description 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 1
- 125000004430 oxygen atom Chemical group O* 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 229920001643 poly(ether ketone) Polymers 0.000 description 1
- 229920002492 poly(sulfone) Polymers 0.000 description 1
- 229920001083 polybutene Polymers 0.000 description 1
- 150000004291 polyenes Chemical class 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000005056 polyisocyanate Substances 0.000 description 1
- 229920001228 polyisocyanate Polymers 0.000 description 1
- 239000011116 polymethylpentene Substances 0.000 description 1
- 229920000306 polymethylpentene Polymers 0.000 description 1
- 229920006324 polyoxymethylene Polymers 0.000 description 1
- 229920006380 polyphenylene oxide Polymers 0.000 description 1
- 229920000069 polyphenylene sulfide Polymers 0.000 description 1
- 229920005606 polypropylene copolymer Polymers 0.000 description 1
- 229920001451 polypropylene glycol Polymers 0.000 description 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000003938 response to stress Effects 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 125000000467 secondary amino group Chemical group [H]N([*:1])[*:2] 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000004528 spin coating Methods 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 125000004434 sulfur atom Chemical group 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
- 125000001302 tertiary amino group Chemical group 0.000 description 1
- UWHCKJMYHZGTIT-UHFFFAOYSA-N tetraethylene glycol Chemical compound OCCOCCOCCOCCO UWHCKJMYHZGTIT-UHFFFAOYSA-N 0.000 description 1
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 150000003573 thiols Chemical class 0.000 description 1
- 150000005691 triesters Chemical class 0.000 description 1
- 229920001862 ultra low molecular weight polyethylene Polymers 0.000 description 1
- 229920001866 very low density polyethylene Polymers 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J9/00—Adhesives characterised by their physical nature or the effects produced, e.g. glue sticks
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/20—Adhesives in the form of films or foils characterised by their carriers
- C09J7/29—Laminated material
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/12—Esters of monohydric alcohols or phenols
- C08F220/16—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms
- C08F220/18—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms with acrylic or methacrylic acids
- C08F220/1804—C4-(meth)acrylate, e.g. butyl (meth)acrylate, isobutyl (meth)acrylate or tert-butyl (meth)acrylate
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F222/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a carboxyl radical and containing at least one other carboxyl radical in the molecule; Salts, anhydrides, esters, amides, imides, or nitriles thereof
- C08F222/10—Esters
- C08F222/1006—Esters of polyhydric alcohols or polyhydric phenols
- C08F222/106—Esters of polycondensation macromers
- C08F222/1065—Esters of polycondensation macromers of alcohol terminated (poly)urethanes, e.g. urethane(meth)acrylates
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F290/00—Macromolecular compounds obtained by polymerising monomers on to polymers modified by introduction of aliphatic unsaturated end or side groups
- C08F290/02—Macromolecular compounds obtained by polymerising monomers on to polymers modified by introduction of aliphatic unsaturated end or side groups on to polymers modified by introduction of unsaturated end groups
- C08F290/06—Polymers provided for in subclass C08G
- C08F290/067—Polyurethanes; Polyureas
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/08—Processes
- C08G18/10—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/42—Polycondensates having carboxylic or carbonic ester groups in the main chain
- C08G18/44—Polycarbonates
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/62—Polymers of compounds having carbon-to-carbon double bonds
- C08G18/6216—Polymers of alpha-beta ethylenically unsaturated carboxylic acids or of derivatives thereof
- C08G18/622—Polymers of esters of alpha-beta ethylenically unsaturated carboxylic acids
- C08G18/6225—Polymers of esters of acrylic or methacrylic acid
- C08G18/6229—Polymers of hydroxy groups containing esters of acrylic or methacrylic acid with aliphatic polyalcohols
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/67—Unsaturated compounds having active hydrogen
- C08G18/671—Unsaturated compounds having only one group containing active hydrogen
- C08G18/672—Esters of acrylic or alkyl acrylic acid having only one group containing active hydrogen
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
- C08G18/75—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic
- C08G18/751—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic containing only one cycloaliphatic ring
- C08G18/752—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic containing only one cycloaliphatic ring containing at least one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group
- C08G18/753—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic containing only one cycloaliphatic ring containing at least one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group containing one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group having a primary carbon atom next to the isocyanate or isothiocyanate group
- C08G18/755—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic containing only one cycloaliphatic ring containing at least one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group containing one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group having a primary carbon atom next to the isocyanate or isothiocyanate group and at least one isocyanate or isothiocyanate group linked to a secondary carbon atom of the cycloaliphatic ring, e.g. isophorone diisocyanate
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/80—Masked polyisocyanates
- C08G18/8003—Masked polyisocyanates masked with compounds having at least two groups containing active hydrogen
- C08G18/8006—Masked polyisocyanates masked with compounds having at least two groups containing active hydrogen with compounds of C08G18/32
- C08G18/8009—Masked polyisocyanates masked with compounds having at least two groups containing active hydrogen with compounds of C08G18/32 with compounds of C08G18/3203
- C08G18/8022—Masked polyisocyanates masked with compounds having at least two groups containing active hydrogen with compounds of C08G18/32 with compounds of C08G18/3203 with polyols having at least three hydroxy groups
- C08G18/8029—Masked aromatic polyisocyanates
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/81—Unsaturated isocyanates or isothiocyanates
- C08G18/8108—Unsaturated isocyanates or isothiocyanates having only one isocyanate or isothiocyanate group
- C08G18/8116—Unsaturated isocyanates or isothiocyanates having only one isocyanate or isothiocyanate group esters of acrylic or alkylacrylic acid having only one isocyanate or isothiocyanate group
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J133/00—Adhesives based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Adhesives based on derivatives of such polymers
- C09J133/04—Homopolymers or copolymers of esters
- C09J133/14—Homopolymers or copolymers of esters of esters containing halogen, nitrogen, sulfur or oxygen atoms in addition to the carboxy oxygen
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J175/00—Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
- C09J175/04—Polyurethanes
- C09J175/14—Polyurethanes having carbon-to-carbon unsaturated bonds
- C09J175/16—Polyurethanes having carbon-to-carbon unsaturated bonds having terminal carbon-to-carbon unsaturated bonds
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J201/00—Adhesives based on unspecified macromolecular compounds
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/20—Adhesives in the form of films or foils characterised by their carriers
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
- C09J7/38—Pressure-sensitive adhesives [PSA]
-
- 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
-
- 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
- H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
- H01L21/67005—Apparatus not specifically provided for elsewhere
- H01L21/67011—Apparatus for manufacture or treatment
- H01L21/67132—Apparatus for placing on an insulating substrate, e.g. tape
-
- 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
- H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
- H01L21/683—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for supporting or gripping
- H01L21/6835—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for supporting or gripping using temporarily an auxiliary support
- H01L21/6836—Wafer tapes, e.g. grinding or dicing support tapes
-
- 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
- H01L21/70—Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
- H01L21/77—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate
- H01L21/78—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L24/00—Arrangements for connecting or disconnecting semiconductor or solid-state bodies; Methods or apparatus related thereto
- H01L24/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L24/50—Tape automated bonding [TAB] connectors, i.e. film carriers; Manufacturing methods related thereto
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2203/00—Applications of adhesives in processes or use of adhesives in the form of films or foils
- C09J2203/326—Applications of adhesives in processes or use of adhesives in the form of films or foils for bonding electronic components such as wafers, chips or semiconductors
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/30—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier
- C09J2301/312—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier parameters being the characterizing feature
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/40—Additional features of adhesives in the form of films or foils characterized by the presence of essential components
- C09J2301/416—Additional features of adhesives in the form of films or foils characterized by the presence of essential components use of irradiation
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2433/00—Presence of (meth)acrylic polymer
- C09J2433/006—Presence of (meth)acrylic polymer in the substrate
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2475/00—Presence of polyurethane
- C09J2475/006—Presence of polyurethane in the substrate
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2221/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof covered by H01L21/00
- H01L2221/67—Apparatus for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components; Apparatus not specifically provided for elsewhere
- H01L2221/683—Apparatus for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components; Apparatus not specifically provided for elsewhere for supporting or gripping
- H01L2221/68304—Apparatus for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components; Apparatus not specifically provided for elsewhere for supporting or gripping using temporarily an auxiliary support
- H01L2221/68327—Apparatus for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components; Apparatus not specifically provided for elsewhere for supporting or gripping using temporarily an auxiliary support used during dicing or grinding
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2221/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof covered by H01L21/00
- H01L2221/67—Apparatus for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components; Apparatus not specifically provided for elsewhere
- H01L2221/683—Apparatus for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components; Apparatus not specifically provided for elsewhere for supporting or gripping
- H01L2221/68304—Apparatus for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components; Apparatus not specifically provided for elsewhere for supporting or gripping using temporarily an auxiliary support
- H01L2221/6834—Apparatus for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components; Apparatus not specifically provided for elsewhere for supporting or gripping using temporarily an auxiliary support used to protect an active side of a device or wafer
Definitions
- the present invention relates to an adhesive tape for semiconductor processing, and more specifically, when a semiconductor device is manufactured using a method in which a modified region is provided inside a wafer with a laser and the wafer is separated into pieces by stress during grinding of the wafer back surface.
- the present invention relates to an adhesive tape preferably used for temporarily holding a semiconductor wafer or a chip, and a method of manufacturing a semiconductor device using the adhesive tape.
- DBG Dicing Before Grinding
- Patent Document 1 discloses that a base material provided with a base film and a buffer layer and a surface on the opposite side of the base film provided with the buffer layer.
- a back grind tape having an adhesive layer provided on the surface has been proposed.
- Patent Document 1 discloses that the Young's modulus of the base film is 600 MPa or more, that the buffer layer is formed from a urethane-containing cured product, and the peak temperature of tan ⁇ of the buffer layer is 60 ° C. or less.
- Patent Document 2 Japanese Patent Application Laid-Open No. 2015-183008 discloses a rigid base, a buffer layer provided on one side of the rigid base, and a second side of the rigid base. An adhesive sheet having an adhesive layer has been proposed.
- the Young's modulus of the rigid substrate is 1000 MPa or more, or the buffer layer is formed from a composition for forming a buffer layer containing an energy beam polymerizable compound, and the buffer layer is dynamic at ⁇ 5 to 120 ° C. It is disclosed that the maximum value of viscoelasticity tan ⁇ is 0.5 or more.
- LDBG Laser Dicing Before Grinding
- chip crack chip chipping or breakage
- the present inventors have found that the chip vibrates or moves due to stress (compression stress and shear stress) during back grinding, and the chip cracks due to the collision between the chips. Found out that it has occurred. Such chip cracks are more prominent because the kerf width is small in LDBG.
- the present invention has been made in view of the above-described prior art, and even when used for DBG, especially LDBG, it is possible to suppress chip cracks, and when a pressure sensitive adhesive tape is applied to an uneven wafer surface, the wafer surface
- An object of the present invention is to provide a semiconductor processing pressure-sensitive adhesive tape that can sufficiently bring the unevenness of the pressure-sensitive adhesive layer into contact with the pressure-sensitive adhesive layer and can appropriately exhibit the adhesiveness of the pressure-sensitive adhesive layer.
- the gist of the present invention aimed at solving such problems is as follows.
- An adhesive tape having a base material having a Young's modulus at 23 ° C. of 1000 MPa or more and an adhesive layer, When the thickness of the pressure-sensitive adhesive layer is (N) [ ⁇ m] and the creep amount is (C) [ ⁇ m], the product (N) ⁇ (C) of (N) and (C) is 30 ° C.
- a pressure-sensitive adhesive tape for semiconductor processing which is 500 or more and 9000 or less at 60 ° C.
- the semiconductor wafer having the adhesive tape attached to the surface and having the groove or the modified region formed thereon is ground from the back side, and separated into a plurality of chips starting from the groove or the modified region. Process, Peeling the adhesive tape from the plurality of chips;
- a method for manufacturing a semiconductor device comprising:
- the semiconductor processing pressure-sensitive adhesive tape according to the present invention is not easily deformed by stress during back grinding, and moderates the stress moderately. Therefore, the vibration or movement of the chips during back grinding can be suppressed, and collision between the chips can be prevented. As a result, the occurrence of cracks in the semiconductor chip can be reduced. Moreover, when sticking an adhesive tape on the wafer surface with an unevenness
- Form semiconductor processing means that it can be used in each process such as transport of a semiconductor wafer, back surface grinding, dicing, and picking up a semiconductor chip.
- the “front surface” of the semiconductor wafer refers to the surface on which the circuit is formed, and the “back surface” refers to the surface on which the circuit is not formed.
- Dividing the semiconductor wafer into pieces means dividing the semiconductor wafer into circuits to obtain semiconductor chips.
- DBG refers to a method in which after a groove having a predetermined depth is formed on the front surface side of the wafer, grinding is performed from the back surface side of the wafer, and the wafer is separated into pieces by grinding.
- the groove formed on the front surface side of the wafer is formed by a method such as blade dicing, laser dicing or plasma dicing.
- LDBG is a modification of DBG, and refers to a method in which a modified region is provided inside a wafer with a laser, and the wafer is singulated with stress during grinding of the wafer back surface.
- each member of the adhesive tape for semiconductor processing according to the present invention will be described in more detail.
- the characteristic of the buffer layer in the adhesive tape containing a base material, the buffer layer provided in the at least one surface side of the base material, and the adhesive layer provided in the other surface side of the base material This will be explained with a focus on.
- description will be made by paying attention to the characteristics of an adhesive layer in an adhesive tape including a base material and an adhesive layer provided on at least one surface side of the base material.
- the adhesive tape for semiconductor processing according to the present invention may be simply referred to as “adhesive tape”.
- the gist of the first embodiment of the present invention is as follows. [1] A base material having a Young's modulus at 23 ° C. of 1000 MPa or more, a buffer layer provided on at least one surface side of the base material, and an adhesive layer provided on the other surface side of the base material An adhesive tape comprising: The buffer layer has a tensile storage modulus (E 23 ) at 23 ° C. of 100 to 2000 MPa, A pressure-sensitive adhesive tape for semiconductor processing, wherein the buffer layer has a tensile storage modulus (E 60 ) at 60 ° C. of 20 to 1000 MPa.
- E 23 tensile storage modulus
- E 60 tensile storage modulus
- [8] A step of attaching the adhesive tape for semiconductor processing according to any one of [1] to [7] to the surface of a semiconductor wafer; Forming a modified region in the semiconductor wafer from the front or back surface of the semiconductor wafer; Grinding the semiconductor wafer on which the adhesive tape is affixed to the front surface and the modified region is formed from the back side, and dividing into a plurality of chips starting from the modified region; and Peeling the adhesive tape from the plurality of chips;
- a method for manufacturing a semiconductor device comprising:
- the adhesive tape includes a base material, a buffer layer provided on at least one surface side of the base material, and an adhesive layer provided on the other surface side of the base material.
- Means a laminate comprising it does not prevent including other structural layers other than these.
- a primer layer may be formed on the surface of the base material on the pressure-sensitive adhesive layer side, and a release sheet for protecting the pressure-sensitive adhesive layer may be laminated on the surface of the pressure-sensitive adhesive layer until use.
- the substrate may be a single layer or a multilayer. The same applies to the buffer layer and the adhesive layer.
- the configuration of each member of the adhesive tape for semiconductor processing according to the first embodiment will be described in more detail.
- the base material has a Young's modulus at 23 ° C. of 1000 MPa or more. If a base material with a Young's modulus of less than 1000 MPa is used, the holding performance of the adhesive tape on the semiconductor wafer or semiconductor chip will be reduced, vibrations during back grinding cannot be suppressed, and chipping or breakage of the semiconductor chip will occur. It becomes easy. On the other hand, by setting the Young's modulus at 23 ° C. of the base material to 1000 MPa or more, the holding performance of the adhesive tape to the semiconductor wafer or semiconductor chip is enhanced, and vibration during back surface grinding is suppressed to prevent chipping or breakage of the semiconductor chip. it can.
- the Young's modulus at 23 ° C. of the base material is preferably 1800 to 30000 MPa, more preferably 2500 to 6000 MPa.
- the thickness of the substrate is not particularly limited, but is preferably 110 ⁇ m or less, more preferably 15 to 110 ⁇ m, and further preferably 20 to 105 ⁇ m.
- the thickness of the base material 110 ⁇ m or less it becomes easy to control the peeling force of the adhesive tape.
- the material of the substrate is not particularly limited as long as it satisfies the above physical properties, and various resin films can be used.
- a base material having a Young's modulus at 23 ° C. of 1000 MPa or more for example, polyesters such as polyethylene terephthalate, polyethylene naphthalate, polybutylene terephthalate, wholly aromatic polyester, polyimide, polyamide, polycarbonate, polyacetal, modified polyphenylene oxide, polyphenylene sulfide , Resin films such as polysulfone, polyetherketone, and biaxially stretched polypropylene.
- a film containing at least one selected from a polyester film, a polyamide film, a polyimide film, and a biaxially stretched polypropylene film is preferable, a polyester film is more preferable, and a polyethylene terephthalate film is further preferable.
- the base material may contain a plasticizer, a lubricant, an infrared absorber, an ultraviolet absorber, a filler, a colorant, an antistatic agent, an antioxidant, a catalyst and the like as long as the effects of the present invention are not impaired.
- the substrate may be transparent or opaque, and may be colored or vapor-deposited as desired.
- at least one surface of the substrate may be subjected to an adhesion treatment such as a corona treatment in order to improve adhesion with at least one of the buffer layer and the pressure-sensitive adhesive layer.
- the base material may have the above-described resin film and an easy-adhesion layer coated on at least one surface of the resin film.
- the composition containing a polyester-type resin, a urethane-type resin, a polyester urethane-type resin, an acrylic resin etc. is mentioned.
- the easy-adhesion layer forming composition may contain a crosslinking agent, a photopolymerization initiator, an antioxidant, a softening agent (plasticizer), a filler, an antirust agent, a pigment, a dye, and the like, if necessary. Good.
- the thickness of the easy adhesion layer is preferably 0.01 to 10 ⁇ m, more preferably 0.03 to 5 ⁇ m.
- the thickness of the easily bonding layer in an Example of this application is small with respect to the thickness of a base material, the thickness of the resin film which has an easily bonding layer, and the thickness of a base material are substantially the same. Further, since the material of the easy-adhesion layer is soft, the influence on the Young's modulus is small, and the Young's modulus of the base material is substantially the same as the Young's modulus of the resin film even when the easy-adhesion layer is provided.
- the Young's modulus of the substrate can be controlled by selection of the resin composition, addition of a plasticizer, stretching conditions during resin film production, and the like. Specifically, when a polyethylene terephthalate film is used as the substrate, the Young's modulus of the substrate tends to decrease as the content of the ethylene component in the copolymer component increases. Moreover, when the compounding quantity of a plasticizer increases with respect to the resin composition which comprises a base material, there exists a tendency for the Young's modulus of a base material to fall.
- the buffer layer is a soft layer as compared with the base material, and relaxes the stress at the time of grinding the back surface of the semiconductor wafer to prevent the semiconductor wafer from being cracked or chipped.
- the semiconductor wafer with the adhesive tape attached is placed on the vacuum table via the adhesive tape during backside grinding.
- the semiconductor wafer is easily held on the vacuum table. Become.
- the tensile storage elastic modulus (E 23 ) at 23 ° C. of the buffer layer is 100 to 2000 MPa, and the tensile storage elastic modulus at 60 ° C. is 20 to 1000 MPa.
- the adhesive tape may be affixed to the semiconductor wafer near normal temperature (23 ° C.). Further, the adhesive tape may be heated from around 23 ° C. to about 60 to 90 ° C. by frictional heat during back grinding. If the tensile storage elastic modulus (E 23 ) at room temperature (23 ° C.) of the buffer layer is less than 100 MPa, or the tensile storage elastic modulus (E 60 ) at 60 ° C. is less than 20 MPa, the pressure-sensitive adhesive tape is caused by the stress during back grinding.
- the adhesive tape can be prevented from being deformed due to stress at the time of back grinding, and the buffer performance can be appropriately maintained. Cracks can be suppressed.
- the tensile storage modulus (E 23) within the above range improves the adhesion between the adhesive tape and the vacuum table can suppress vibrations at the time of back grinding. Furthermore, it becomes easy to peel the adhesive tape after the back surface grinding.
- the tensile storage elastic modulus (E 23 ) at 23 ° C. of the buffer layer is preferably 100 to 2000 MPa, more preferably 150 to 1000 MPa, and further preferably 200 to 700 MPa.
- the tensile storage modulus (E 60 ) at 60 ° C. of the buffer layer is preferably 20 to 1000 MPa, more preferably 30 to 300 MPa, and still more preferably 40 to 200 MPa.
- the tensile storage modulus (E 90 ) of the buffer layer at 90 ° C. is preferably 0.1 to 300 MPa, more preferably 5 to 100 MPa, and still more preferably 10 to 50 MPa.
- the tensile storage elastic modulus (E 23 ) of the buffer layer at 23 ° C. and the tensile storage elastic modulus (E 60 ) of the buffer layer at 60 ° C. satisfy the relationship of (E 23 ) / (E 60 ) ⁇ 90. .
- the tensile storage modulus at 23 ° C. of the buffer layer (E 23) and tensile storage modulus at 90 ° C. of the buffer layer (E 90) satisfies the relationship (E 23) / (E 90 ) ⁇ 90 Is preferred.
- the ratio of the tensile storage modulus (E 23 ) to the tensile storage modulus (E 60 ) [(E 23 ) / (E 60 )] is an indicator of the change in tensile storage modulus from 23 ° C. to 60 ° C.
- the ratio of the tensile storage modulus (E 23 ) to the tensile storage modulus (E 90 ) [(E 23 ) / (E 90 )] is the change in the tensile storage modulus from 23 ° C. to 90 ° C. It is an indicator.
- the tensile storage elastic modulus of the buffer layer decreases as the temperature rises, but the fact that (E 23 ) / (E 60 ) and (E 23 ) / (E 90 ) are small indicates that the temperature dependence of the tensile storage elastic modulus. Means small.
- the ratio between the tensile storage modulus (E 23 ) and the tensile storage modulus (E 60 ), the tensile storage modulus (E 23 ) and the ratio of the tensile storage modulus (E 90 ) within the above range can reduce the change in physical properties of the buffer layer with respect to the temperature change due to frictional heat during back grinding. As a result, it is possible to prevent deformation of the adhesive tape due to stress during back surface grinding in the above temperature range, maintain moderate buffer performance, and suppress the occurrence of chip cracks. From the above viewpoint, (E 23 ) / (E 60 ) ⁇ 33 is more preferable, and 1 ⁇ (E 23 ) / (E 60 ) ⁇ 18 is even more preferable. Further, (E 23 ) / (E 90 ) ⁇ 70 is more preferable, and 4 ⁇ (E 23 ) / (E 90 ) ⁇ 50 is further preferable.
- the maximum value of tan ⁇ of dynamic viscoelasticity at ⁇ 5 to 120 ° C. of the buffer layer is preferably 1.0 or less.
- the maximum value of tan ⁇ of the buffer layer exceeds 1.0, the deformation of the buffer layer due to stress during back grinding increases, and the chips held on the adhesive tape are displaced, so that the chips collide with each other and the chips Cracks may occur.
- the maximum value of tan ⁇ of the buffer layer is more preferably 0.5 or less, and further preferably 0.05 to 0.5.
- Tan ⁇ is called loss tangent, defined as “tensile loss elastic modulus / tensile storage elastic modulus”, and is measured by a response to stress such as tensile stress and torsional stress applied to the object by a dynamic viscoelasticity measuring device. Value.
- the gel fraction of the buffer layer is preferably 70 to 99%, more preferably 90 to 99%. By setting the gel fraction of the buffer layer within the above range, deformation of the buffer layer due to stress during back grinding can be suppressed.
- the buffer layer is formed from a composition for forming a buffer layer containing an energy beam polymerizable compound, either the gel fraction before energy beam curing or the gel fraction after energy beam curing is within the above range. If it is in.
- the gel fraction of the buffer layer can be measured by the following method.
- a buffer layer having a thickness of 20 ⁇ m is cut into a size of 50 mm ⁇ 100 mm to obtain a measurement sample.
- the measurement sample is wrapped in a 100 mm ⁇ 150 mm nylon mesh (mesh size 200), the mass of the measurement sample and the nylon mesh are weighed with a precision balance, and the mass of the nylon mesh measured in advance from the weighed mass. Is obtained, the mass of only the sample for measurement is obtained. The mass at this time is M1.
- the measurement sample wrapped in the nylon mesh is immersed in 100 mL of ethyl acetate at 25 ° C. for 24 hours. Then, the measurement sample is taken out, dried at 120 ° C.
- the thickness of the buffer layer is preferably 1 to 100 ⁇ m, more preferably 5 to 80 ⁇ m, and even more preferably 10 to 60 ⁇ m. By setting the thickness of the buffer layer within the above range, the buffer layer can appropriately relieve the stress during back surface grinding.
- a buffer layer is a layer formed from the composition for buffer layer formation containing an energy-beam polymeric compound, or a layer containing a polyolefin resin film.
- a buffer layer is a layer formed from the composition for buffer layer formation containing an energy-beam polymeric compound, or a layer containing a polyolefin resin film.
- the composition for forming a buffer layer containing an energy ray polymerizable compound can be cured by irradiation with energy rays.
- Energy rays refer to ultraviolet rays, electron beams, and the like, and preferably ultraviolet rays are used.
- the composition for buffer layer formation containing an energy-beam polymeric compound contains urethane (meth) acrylate (a1) and a polyfunctional polymerizable compound (a2) more specifically.
- the buffer layer-forming composition is a polymerizable compound (a3) having an alicyclic group or heterocyclic group having 6 to 20 ring-forming atoms in addition to the components (a1) and (a2). And / or a polymerizable compound (a4) having a functional group is more preferable.
- the buffer layer-forming composition preferably further contains a photopolymerization initiator, and other additives or additives within the range not impairing the effects of the present invention.
- a resin component may be contained.
- each component contained in the composition for buffer layer formation containing an energy-beam polymeric compound is demonstrated in detail.
- the urethane (meth) acrylate (a1) is a compound having at least a (meth) acryloyl group and a urethane bond, and has a property of being polymerized and cured by irradiation with energy rays.
- Urethane (meth) acrylate (a1) is an oligomer or a polymer.
- the weight average molecular weight (Mw) of the component (a1) is preferably 1,000 to 100,000, more preferably 2,000 to 60,000, still more preferably 3,000 to 20,000. Further, the number of (meth) acryloyl groups (hereinafter also referred to as “number of functional groups”) in the component (a1) may be monofunctional, bifunctional, or trifunctional or more, but is preferably monofunctional or bifunctional. .
- the component (a1) can be obtained, for example, by reacting a (meth) acrylate having a hydroxyl group with a terminal isocyanate urethane prepolymer obtained by reacting a polyol compound and a polyvalent isocyanate compound. In addition, you may use a component (a1) individually or in combination of 2 or more types.
- the polyol compound used as a raw material for the component (a1) is not particularly limited as long as it is a compound having two or more hydroxy groups.
- Specific examples of the polyol compound include alkylene diol, polyether type polyol, polyester type polyol, and polycarbonate type polyol. Among these, a polyester type polyol or a polycarbonate type polyol is preferable.
- the polyol compound may be a bifunctional diol, a trifunctional triol, or a tetrafunctional or higher polyol, but is preferably a bifunctional diol, more preferably a polyester type diol or a polycarbonate type diol.
- polyvalent isocyanate compound examples include aliphatic polyisocyanates such as tetramethylene diisocyanate, hexamethylene diisocyanate, and trimethylhexamethylene diisocyanate; isophorone diisocyanate, norbornane diisocyanate, dicyclohexylmethane-4,4′-diisocyanate, dicyclohexylmethane-2 , 4'-diisocyanate, ⁇ , ⁇ '-diisocyanate dimethylcyclohexane, etc .; 4,4'-diphenylmethane diisocyanate, tolylene diisocyanate, xylylene diisocyanate, tolidine diisocyanate, tetramethylene xylylene diisocyanate, naphthalene- And aromatic diisocyanates such as 1,5-diisocyanate.
- a urethane (meth) acrylate (a1) can be obtained by reacting a (meth) acrylate having a hydroxy group with a terminal isocyanate urethane prepolymer obtained by reacting the above-described polyol compound with a polyvalent isocyanate compound.
- the (meth) acrylate having a hydroxy group is not particularly limited as long as it is a compound having a hydroxy group and a (meth) acryloyl group in at least one molecule.
- the (meth) acrylate having a hydroxy group examples include 2-hydroxyethyl (meth) acrylate, 2-hydroxypropyl (meth) acrylate, 4-hydroxybutyl (meth) acrylate, and 4-hydroxycyclohexyl (meth).
- Acrylate 5-hydroxycyclooctyl (meth) acrylate, 2-hydroxy-3-phenyloxypropyl (meth) acrylate, pentaerythritol tri (meth) acrylate, polyethylene glycol mono (meth) acrylate, polypropylene glycol mono (meth) acrylate, etc.
- Hydroxy-alkyl (meth) acrylates hydroxy-group-containing (meth) acrylamides such as N-methylol (meth) acrylamide; vinyl alcohol, vinyl phenol, bisphenol The reaction product obtained by the diglycidyl ester of Nord A (meth) acrylic acid by reacting; and the like.
- hydroxyalkyl (meth) acrylate is preferable, and 2-hydroxyethyl (meth) acrylate is more preferable.
- the conditions for reacting the terminal isocyanate urethane prepolymer and the (meth) acrylate having a hydroxy group are preferably the conditions of reacting at 60 to 100 ° C. for 1 to 4 hours in the presence of a solvent and a catalyst added as necessary.
- the content of the component (a1) in the buffer layer forming composition is preferably 10 to 70% by weight, more preferably 20 to 60% by weight, based on the total amount (100% by weight) of the buffer layer forming composition. More preferably, it is 25 to 55% by mass, particularly preferably 30 to 50% by mass.
- a polyfunctional polymerizable compound refers to a compound having two or more photopolymerizable unsaturated groups.
- the photopolymerizable unsaturated group is a functional group containing a carbon-carbon double bond, and examples thereof include a (meth) acryloyl group, a vinyl group, an allyl group, and a vinylbenzyl group. Two or more photopolymerizable unsaturated groups may be combined.
- a three-dimensional network structure (crosslinked structure) is formed.
- the cross-linked structure formed by irradiation with energy rays is increased compared to the case where a compound containing only one photopolymerizable unsaturated group is used. Viscoelasticity is exhibited, and it becomes easy to control the maximum values of the tensile storage elastic modulus (E 23 , E 60 , E 90 ) and tan ⁇ within the above range.
- a component (a2) and the definition of the component (a3) and component (a4) mentioned later have an overlapping part
- an overlapping part is contained in a component (a2).
- a compound having an alicyclic group or heterocyclic group having 6 to 20 ring atoms and having two or more (meth) acryloyl groups is included in the definitions of both component (a2) and component (a3).
- the said compound shall be contained in a component (a2).
- a compound containing a functional group such as a hydroxyl group, an epoxy group, an amide group or an amino group and having two or more (meth) acryloyl groups is included in the definitions of both the component (a2) and the component (a4).
- the compound is included in the component (a2).
- the number of photopolymerizable unsaturated groups (the number of functional groups) in the polyfunctional polymerizable compound is preferably 2 to 10, and more preferably 3 to 6.
- the weight average molecular weight of the component (a2) is preferably 30 to 40,000, more preferably 100 to 10,000, and still more preferably 200 to 1,000.
- Specific components (a2) include, for example, diethylene glycol di (meth) acrylate, ethylene glycol di (meth) acrylate, tetraethylene glycol di (meth) acrylate, neopentyl glycol di (meth) acrylate, and 1,6-hexane.
- the content of the component (a2) in the buffer layer forming composition is preferably 2 to 40% by weight, more preferably 3 to 20% by weight, based on the total amount (100% by weight) of the buffer layer forming composition. More preferably, it is 5 to 15% by mass.
- Component (a3) is a polymerizable compound having an alicyclic group or heterocyclic group having 6 to 20 ring atoms, and more preferably a compound having at least one (meth) acryloyl group, A compound having one (meth) acryloyl group is preferred.
- a component (a3) and the definition of the component (a4) mentioned later have an overlapping part
- an overlapping part is contained in a component (a4).
- a compound having at least one (meth) acryloyl group, an alicyclic group having 6 to 20 ring-forming atoms or a heterocyclic group, and a functional group such as a hydroxyl group, an epoxy group, an amide group, or an amino group Although included in the definitions of both (a3) and component (a4), in the present invention, the compound is included in component (a4).
- the number of ring-forming atoms of the alicyclic group or heterocyclic group contained in the component (a3) is preferably 6 to 20, more preferably 6 to 18, still more preferably 6 to 16, particularly preferably 7 to 12. is there.
- Examples of the atoms forming the ring structure of the heterocyclic group include a carbon atom, a nitrogen atom, an oxygen atom, and a sulfur atom.
- the number of ring-forming atoms means the number of atoms constituting the ring itself of a compound having a structure in which atoms are bonded in a ring, and atoms that do not form a ring (for example, hydrogen atoms bonded to atoms forming the ring)
- an atom included in a substituent when the ring is substituted with a substituent is not included in the number of ring-forming atoms.
- component (a3) examples include, for example, isobornyl (meth) acrylate, dicyclopentenyl (meth) acrylate, dicyclopentanyl (meth) acrylate, dicyclopentenyloxy (meth) acrylate, cyclohexyl (meth) acrylate, And alicyclic group-containing (meth) acrylates such as adamantane (meth) acrylate; heterocyclic group-containing (meth) acrylates such as tetrahydrofurfuryl (meth) acrylate and morpholine (meth) acrylate; In addition, you may use a component (a3) individually or in combination of 2 or more types.
- alicyclic group-containing (meth) acrylates isobornyl (meth) acrylate is preferable, and among the heterocyclic group-containing (meth) acrylates, tetrahydrofurfuryl (meth) acrylate is preferable.
- the content of the component (a3) in the buffer layer forming composition is preferably 10 to 70% by weight, more preferably 20 to 60% by weight, based on the total amount (100% by weight) of the buffer layer forming composition. More preferably, it is 25 to 55% by mass. Further, the content ratio [(a2) / (a3)] of the component (a2) and the component (a3) in the composition for forming a buffer layer is preferably 0.1 to 3.0, more preferably 0.00. It is 15 to 2.0, more preferably 0.18 to 1.0, and particularly preferably 0.2 to 0.5.
- Component (a4) is a polymerizable compound containing a functional group such as a hydroxyl group, an epoxy group, an amide group, an amino group, and more preferably a compound having at least one (meth) acryloyl group, A compound having one (meth) acryloyl group is preferred.
- the component (a4) has good compatibility with the component (a1), and the viscosity of the composition for forming a buffer layer can be easily adjusted to an appropriate range. Moreover, it becomes easy to make the maximum value of the tensile storage elastic modulus (E 23 , E 60 , E 90 ) and tan ⁇ of the buffer layer formed from the composition within the above-described range. Will be better.
- Examples of the component (a4) include a hydroxyl group-containing (meth) acrylate, an epoxy group-containing compound, an amide group-containing compound, and an amino group-containing (meth) acrylate.
- Examples of the hydroxyl group-containing (meth) acrylate include 2-hydroxyethyl (meth) acrylate, 2-hydroxypropyl (meth) acrylate, 3-hydroxypropyl (meth) acrylate, 2-hydroxybutyl (meth) acrylate, and 3-hydroxy Examples include butyl (meth) acrylate, 4-hydroxybutyl (meth) acrylate, phenylhydroxypropyl (meth) acrylate, and 2-hydroxy-3-phenoxypropyl acrylate.
- Examples of the epoxy group-containing compound include glycidyl (meth) acrylate, methyl glycidyl (meth) acrylate, and allyl glycidyl ether.
- epoxy such as glycidyl (meth) acrylate and methyl glycidyl (meth) acrylate is used.
- Group-containing (meth) acrylates are preferred.
- amide group-containing compounds include (meth) acrylamide, N, N-dimethyl (meth) acrylamide, N-butyl (meth) acrylamide, N-methylol (meth) acrylamide, N-methylolpropane (meth) acrylamide, N -Methoxymethyl (meth) acrylamide, N-butoxymethyl (meth) acrylamide and the like.
- Examples of amino group-containing (meth) acrylates include primary amino group-containing (meth) acrylates, secondary amino group-containing (meth) acrylates, and tertiary amino group-containing (meth) acrylates.
- a hydroxyl group-containing (meth) acrylate is preferable, and a hydroxyl group-containing (meth) acrylate having an aromatic ring such as phenylhydroxypropyl (meth) acrylate is more preferable.
- the content of the component (a4) in the composition for forming a buffer layer makes it easy to make the maximum values of the tensile storage modulus (E 23 , E 60 , E 90 ) and tan ⁇ of the buffer layer within the above-mentioned ranges, and the buffer.
- it is preferably 5 to 40% by mass, more preferably 7 to 35% by mass, and more preferably 7 to 35% by mass, based on the total amount (100% by mass) of the buffer layer forming composition.
- the amount is preferably 10 to 30% by mass, particularly preferably 13 to 25% by mass.
- the content ratio [(a3) / (a4)] of the component (a3) to the component (a4) in the buffer layer forming composition is preferably 0.5 to 3.0, more preferably 1. It is 0 to 3.0, more preferably 1.3 to 3.0, and particularly preferably 1.5 to 2.8.
- the composition for forming a buffer layer may contain other polymerizable compound (a5) other than the components (a1) to (a4) as long as the effects of the present invention are not impaired.
- the component (a5) include alkyl (meth) acrylates having an alkyl group having 1 to 20 carbon atoms; styrene, hydroxyethyl vinyl ether, hydroxybutyl vinyl ether, N-vinylformamide, N-vinylpyrrolidone, N-vinylcaprolactam, etc. Vinyl compounds: and the like.
- the content of the component (a5) in the composition for forming a buffer layer is preferably 0 to 20% by mass, more preferably 0 to 10% by mass, further preferably 0 to 5% by mass, and particularly preferably 0 to 2% by mass. %.
- the composition for forming a buffer layer preferably further contains a photopolymerization initiator from the viewpoint of shortening the polymerization time by light irradiation and reducing the amount of light irradiation.
- a photopolymerization initiator include benzoin compounds, acetophenone compounds, acylphosphinoxide compounds, titanocene compounds, thioxanthone compounds, peroxide compounds, and photosensitizers such as amines and quinones.
- 1-hydroxycyclohexyl phenyl ketone 2-hydroxy-2-methyl-1-phenyl-propan-1-one
- benzoin benzoin methyl ether
- benzoin ethyl ether benzoin isopropyl ether
- benzyl phenyl sulfide Tetramethylthiuram monosulfide
- azobisisobutyronitrile dibenzyl, diacetyl, 8-chloroanthraquinone, bis (2,4,6-trimethylbenzoyl) phenylphosphine oxide, etc.
- These photopolymerization initiators can be used alone or in combination of two or more.
- the content of the photopolymerization initiator in the composition for forming a buffer layer is preferably 0.05 to 15 parts by mass, more preferably 0.1 to 10 parts per 100 parts by mass of the total amount of the energy beam polymerizable compound. Part by mass, more preferably 0.3 to 5 parts by mass.
- the composition for forming a buffer layer may contain other additives as long as the effects of the present invention are not impaired.
- other additives include antistatic agents, antioxidants, softeners (plasticizers), fillers, rust inhibitors, pigments, and dyes.
- the content of each additive in the composition for forming a buffer layer is preferably 0.01 to 6 parts by mass with respect to 100 parts by mass of the total amount of the energy beam polymerizable compound, More preferably, it is 0.1 to 3 parts by mass.
- the composition for forming a buffer layer may contain a resin component as long as the effects of the present invention are not impaired.
- the resin component include polyene / thiol resins, polyolefin resins such as polybutene, polybutadiene, and polymethylpentene, and thermoplastic resins such as styrene copolymers.
- the content of these resin components in the composition for forming a buffer layer is preferably 0 to 20% by mass, more preferably 0 to 10% by mass, further preferably 0 to 5% by mass, and particularly preferably 0 to 2% by mass. %.
- the buffer layer formed from the composition for forming a buffer layer containing the energy beam polymerizable compound is obtained by polymerizing and curing the composition for forming a buffer layer having the above composition by irradiation with energy rays. That is, the buffer layer is a cured product of the buffer layer forming composition. Therefore, the said buffer layer contains the polymerization unit derived from a component (a1) and the polymerization unit derived from a component (a2). Moreover, it is preferable that the said buffer layer contains the polymerization unit derived from a component (a3) and / or the polymerization unit derived from a component (a4), and may contain the polymerization unit derived from a component (a5).
- the content ratio of each polymerization unit in the buffer layer usually matches the ratio (preparation ratio) of each component constituting the composition for forming a buffer layer.
- the buffer layer is added to the component (a1). 10 to 70% by mass of derived polymer units are contained.
- the buffer layer is added to the component (a2). 2 to 40% by mass of derived polymer units are contained. The same applies to the components (a3) to (a5).
- the buffer layer By forming the buffer layer with a layer containing a polyolefin resin film, the tensile storage modulus (E 23 , E 60 , E 90 ) and the maximum value of tan ⁇ of the buffer layer can be easily set within the above-described ranges.
- the stress relaxation property may be lower than when the buffer layer is a layer formed from a composition for forming a buffer layer containing an energy beam polymerizable compound.
- the pressure-sensitive adhesive tape having a buffer layer formed by a layer containing a polyolefin resin film on one surface side of the substrate may be warped.
- the buffer layer formed by the layer containing the polyolefin resin film may be provided on at least one surface side of the base material. From the viewpoint of preventing such problems, the buffer layer formed by the layer containing the polyolefin resin film Is preferably provided on both sides of the substrate.
- the polyolefin resin is not particularly limited, for example, ultra low density polyethylene (VLDPE, density: 880 kg / m 3 or more and less than 910 kg / m 3), low density polyethylene (LDPE, density: 910 kg / m 3 or more, 930 kg / m 3 below), medium density polyethylene (MDPE, density: 930 kg / m 3 or more and less than 942kg / m 3), high density polyethylene (HDPE, density: 942kg / m 3 or higher) such as polyethylene resin, polypropylene resin, polyethylene - polypropylene co Polymer, olefin elastomer (TPO), cycloolefin resin, ethylene-vinyl acetate copolymer (EVA), ethylene-vinyl acetate-maleic anhydride copolymer, ethylene- (meth) acrylic acid copolymer, ethylene- (Meth) acrylic acid ester copolymer, D Examples include tylene
- a polyethylene resin is preferable and a low density polyethylene is more preferable from the viewpoint of obtaining a buffer layer having specific physical properties.
- the buffer layer described above may contain a plasticizer, a lubricant, an infrared absorber, an ultraviolet absorber, a filler, a colorant, an antistatic agent, an antioxidant, a catalyst, and the like as long as the effects of the present invention are not impaired. Good.
- the buffer layer described above may be transparent or opaque, and may be colored or vapor-deposited as desired.
- the tensile storage elastic modulus (E 23 , E 60 , E 90 ), (E 23 ) / (E 60 ) or (E 23 ) / (E 90 ) of the buffer layer is the composition of the component (a1), the component ( It can be controlled by the weight average molecular weight of a1) and the blending amounts of components (a2) to (a3).
- the tensile storage elastic modulus of the buffer layer tends to decrease.
- diol or triol is selected as the polyol compound, the tensile storage modulus of the buffer layer tends to decrease.
- the tensile storage elastic modulus of the buffer layer tends to decrease.
- the content of the component (a2) is increased, the tensile storage elastic modulus of the buffer layer tends to increase.
- the content of the component (a3) is increased, the tensile storage elastic modulus of the buffer layer tends to slightly decrease.
- the content of the component (a4) is increased, the tensile storage elastic modulus of the buffer layer tends to slightly decrease.
- the maximum value of tan ⁇ of the buffer layer tends to increase as the content of the component (a1) is increased.
- the maximum value of tan ⁇ of the buffer layer tends to decrease.
- the gel fraction of the buffer layer tends to decrease when the content of components (a2) to (a4) is small. In particular, when the content of the component (a2) is small, the gel fraction of the buffer layer may be greatly reduced.
- the pressure-sensitive adhesive layer is not particularly limited as long as it has an appropriate pressure-sensitive adhesive property at room temperature, but preferably has a shear storage modulus at 23 ° C. of 0.05 to 0.50 MPa.
- a circuit or the like is formed on the surface of the semiconductor wafer and is usually uneven.
- the adhesive storage layer has a shear storage elastic modulus within the above range, the adhesive surface of the wafer surface is sufficiently brought into contact with the adhesive layer when the adhesive tape is applied to the uneven wafer surface. It becomes possible to exhibit adhesiveness appropriately. Therefore, it becomes possible to securely fix the adhesive tape to the semiconductor wafer and to appropriately protect the wafer surface during back grinding.
- the shear storage modulus of the pressure-sensitive adhesive layer is more preferably 0.12 to 0.35 MPa.
- the shear storage elastic modulus of an adhesive layer means the shear storage elastic modulus before hardening by energy ray irradiation, when an adhesive layer is formed from an energy ray-curable adhesive.
- the shear storage modulus can be measured by the following method.
- a measurement sample is obtained by punching a pressure-sensitive adhesive layer having a thickness of about 0.5 to 1 mm into a circle having a diameter of 7.9 mm.
- the elastic modulus of the measurement sample is measured when the temperature is changed at a rate of 3 ° C./min in a temperature range of ⁇ 30 ° C. to 150 ° C. with a frequency of 1 Hz. .
- the elastic modulus at the measurement temperature of 23 ° C. is defined as the shear storage elastic modulus at 23 ° C.
- the thickness of the pressure-sensitive adhesive layer is preferably less than 100 ⁇ m, more preferably 5 to 80 ⁇ m, and even more preferably 10 to 70 ⁇ m.
- the ratio of the low-rigidity portion of the pressure-sensitive adhesive tape can be reduced, so that it becomes easier to prevent chipping of the semiconductor chip that occurs during back surface grinding.
- the pressure-sensitive adhesive layer is formed of, for example, an acrylic pressure-sensitive adhesive, a urethane-based pressure-sensitive adhesive, a rubber-based pressure-sensitive adhesive, a silicone-based pressure-sensitive adhesive, etc., and an acrylic pressure-sensitive adhesive is preferable. Moreover, it is preferable that an adhesive layer is formed from an energy-beam curable adhesive.
- the pressure-sensitive adhesive layer is formed from an energy-ray curable pressure-sensitive adhesive, so that the shear storage elastic modulus at 23 ° C. is set in the above range before curing by energy beam irradiation, and the peeling force after curing is 1000 mN. / 50 mm or less can be easily set.
- the adhesive layer in this invention should not be limitedly limited to these.
- the energy ray curable adhesive include an energy ray curable adhesive containing an energy ray curable compound other than an adhesive resin in addition to a non-energy ray curable adhesive resin (also referred to as “adhesive resin I”).
- An agent composition (hereinafter also referred to as “X-type pressure-sensitive adhesive composition”) can be used.
- an energy ray curable adhesive an energy ray curable adhesive resin having an unsaturated group introduced into the side chain of a non-energy ray curable adhesive resin (hereinafter also referred to as “adhesive resin II”).
- An adhesive composition that is contained as a main component and does not contain an energy ray curable compound other than an adhesive resin hereinafter also referred to as “Y-type adhesive composition”).
- an X ray and Y type combined type that is, an energy ray curable compound containing an energy ray curable compound other than the adhesive resin in addition to the energy ray curable adhesive resin II.
- An adhesive composition (hereinafter, also referred to as “XY-type adhesive composition”) may be used.
- XY-type adhesive composition it is preferable to use an XY type pressure-sensitive adhesive composition.
- the pressure-sensitive adhesive may be formed from a non-energy ray-curable pressure-sensitive adhesive composition that does not cure even when irradiated with energy rays.
- the non-energy ray curable adhesive composition contains at least the non-energy ray curable adhesive resin I, but does not contain the energy ray curable adhesive resin II and the energy ray curable compound described above. is there.
- adhesive resin is used as a term indicating one or both of the above-described adhesive resin I and adhesive resin II.
- Specific examples of the adhesive resin include acrylic resins, urethane resins, rubber resins, and silicone resins. Acrylic resins are preferable.
- acrylic adhesive in which an acrylic resin is used as the adhesive resin will be described in more detail.
- the acrylic polymer (b) is used for the acrylic resin.
- the acrylic polymer (b) is obtained by polymerizing a monomer containing at least an alkyl (meth) acrylate, and includes a structural unit derived from an alkyl (meth) acrylate.
- Examples of the alkyl (meth) acrylate include those having 1 to 20 carbon atoms in the alkyl group, and the alkyl group may be linear or branched.
- alkyl (meth) acrylate examples include methyl (meth) acrylate, ethyl (meth) acrylate, isopropyl (meth) acrylate, n-propyl (meth) acrylate, n-butyl (meth) acrylate, 2-ethylhexyl (meth) ) Acrylate, n-octyl (meth) acrylate, isooctyl (meth) acrylate, nonyl (meth) acrylate, decyl (meth) acrylate, undecyl (meth) acrylate, dodecyl (meth) acrylate and the like.
- Alkyl (meth) acrylates may be used alone or in combination of two or more.
- the acrylic polymer (b) preferably contains a structural unit derived from an alkyl (meth) acrylate having an alkyl group with 4 or more carbon atoms from the viewpoint of improving the adhesive strength of the pressure-sensitive adhesive layer.
- the alkyl (meth) acrylate preferably has 4 to 12 carbon atoms, more preferably 4 to 6 carbon atoms.
- the alkyl (meth) acrylate whose carbon number of an alkyl group is 4 or more is an alkyl acrylate.
- the alkyl (meth) acrylate having an alkyl group having 4 or more carbon atoms is based on the total amount of monomers constituting the acrylic polymer (b) (hereinafter also simply referred to as “monomer total amount”). Thus, it is preferably 40 to 98% by mass, more preferably 45 to 95% by mass, and still more preferably 50 to 90% by mass.
- the acrylic polymer (b) A copolymer containing a structural unit derived from an alkyl (meth) acrylate having 1 to 3 carbon atoms is preferred.
- the alkyl (meth) acrylate is preferably an alkyl (meth) acrylate having 1 or 2 carbon atoms, more preferably methyl (meth) acrylate, and most preferably methyl methacrylate.
- the alkyl (meth) acrylate having an alkyl group having 1 to 3 carbon atoms is preferably 1 to 30% by mass, more preferably 3 to 26% by mass, based on the total amount of monomers. More preferably, it is 6 to 22% by mass.
- the acrylic polymer (b) preferably has a structural unit derived from a functional group-containing monomer in addition to the structural unit derived from the alkyl (meth) acrylate.
- the functional group of the functional group-containing monomer include a hydroxyl group, a carboxy group, an amino group, and an epoxy group.
- the functional group-containing monomer reacts with a crosslinking agent described later to become a crosslinking starting point, or reacts with an unsaturated group-containing compound to introduce an unsaturated group into the side chain of the acrylic polymer (b). Is possible.
- Examples of the functional group-containing monomer include a hydroxyl group-containing monomer, a carboxy group-containing monomer, an amino group-containing monomer, and an epoxy group-containing monomer. These monomers may be used alone or in combination of two or more. Among these, a hydroxyl group-containing monomer and a carboxy group-containing monomer are preferable, and a hydroxyl group-containing monomer is more preferable.
- hydroxyl group-containing monomer examples include 2-hydroxyethyl (meth) acrylate, 2-hydroxypropyl (meth) acrylate, 3-hydroxypropyl (meth) acrylate, 2-hydroxybutyl (meth) acrylate, and 3-hydroxybutyl (meth) ) Acrylates, hydroxyalkyl (meth) acrylates such as 4-hydroxybutyl (meth) acrylate, and unsaturated alcohols such as vinyl alcohol and allyl alcohol.
- carboxy group-containing monomer examples include ethylenically unsaturated monocarboxylic acids such as (meth) acrylic acid and crotonic acid; ethylenically unsaturated dicarboxylic acids such as fumaric acid, itaconic acid, maleic acid and citraconic acid, and anhydrides thereof. , 2-carboxyethyl methacrylate and the like.
- the functional group monomer is preferably 1 to 35% by mass, more preferably 3 to 32% by mass, and still more preferably 6 to 30% by mass with respect to the total amount of monomers constituting the acrylic polymer (b).
- the acrylic polymer (b) is derived from a monomer copolymerizable with the above acrylic monomers such as styrene, ⁇ -methylstyrene, vinyl toluene, vinyl formate, vinyl acetate, acrylonitrile, acrylamide and the like.
- a structural unit may be included.
- the acrylic polymer (b) can be used as a non-energy ray curable adhesive resin I (acrylic resin).
- a resin obtained by reacting a functional group of the acrylic polymer (b) with a compound having a photopolymerizable unsaturated group also referred to as an unsaturated group-containing compound. Can be mentioned.
- An unsaturated group containing compound is a compound which has both the substituent which can be couple
- the photopolymerizable unsaturated group include a (meth) acryloyl group, a vinyl group, an allyl group, and a vinylbenzyl group, and a (meth) acryloyl group is preferable.
- the substituent that the unsaturated group-containing compound can bind to the functional group include an isocyanate group and a glycidyl group.
- examples of the unsaturated group-containing compound include (meth) acryloyloxyethyl isocyanate, (meth) acryloyl isocyanate, glycidyl (meth) acrylate, and the like.
- the unsaturated group-containing compound preferably reacts with a part of the functional group of the acrylic polymer (b), specifically, 50 to 98 mol of the functional group of the acrylic polymer (b).
- % Is preferably reacted with an unsaturated group-containing compound, more preferably 55 to 93 mol%.
- Mw weight average molecular weight of the acrylic resin is preferably 300,000 to 1,600,000, more preferably 400,000 to 1,400,000, still more preferably 500,000 to 1,200,000.
- the energy ray-curable compound contained in the X-type or XY-type pressure-sensitive adhesive composition is preferably a monomer or oligomer having an unsaturated group in the molecule and capable of being polymerized and cured by irradiation with energy rays.
- energy ray curable compounds include trimethylolpropane tri (meth) acrylate, pentaerythritol (meth) acrylate, pentaerythritol tetra (meth) acrylate, dipentaerythritol hexa (meth) acrylate, 1,4- Polyvalent (meth) acrylate monomers such as butylene glycol di (meth) acrylate, 1,6-hexanediol (meth) acrylate, urethane (meth) acrylate, polyester (meth) acrylate, polyether (meth) acrylate, epoxy ( And oligomers such as (meth) acrylate.
- trimethylolpropane tri (meth) acrylate pentaerythritol (meth) acrylate, pentaerythritol tetra (meth) acrylate, dipentaerythritol hexa (meth) acrylate
- urethane (meth) acrylate oligomers are preferable from the viewpoint of relatively high molecular weight and difficulty in reducing the shear storage modulus of the pressure-sensitive adhesive layer.
- the molecular weight of the energy ray curable compound (weight average molecular weight in the case of an oligomer) is preferably 100 to 12000, more preferably 200 to 10,000, still more preferably 400 to 8000, and particularly preferably 600 to 6000.
- the content of the energy ray-curable compound in the X-type pressure-sensitive adhesive composition is preferably 40 to 200 parts by mass, more preferably 50 to 150 parts by mass, and still more preferably 60 to 100 parts by mass with respect to 100 parts by mass of the adhesive resin. 90 parts by mass.
- the content of the energy ray-curable compound in the XY type pressure-sensitive adhesive composition is preferably 1 to 30 parts by mass, more preferably 2 to 20 parts by mass, and still more preferably with respect to 100 parts by mass of the adhesive resin. Is 3 to 15 parts by mass.
- the adhesive resin is energy ray curable, so even if the content of the energy ray curable compound is small, it is possible to sufficiently reduce the peeling force after irradiation with energy rays. It is.
- the pressure-sensitive adhesive composition preferably further contains a crosslinking agent.
- a crosslinking agent reacts with the functional group derived from the functional group monomer which adhesive resin has, for example, and bridge
- the crosslinking agent include: tolylene diisocyanate, hexamethylene diisocyanate, and the like, and isocyanate-based crosslinking agents such as adducts thereof; epoxy-based crosslinking agents such as ethylene glycol glycidyl ether; hexa [1- (2-methyl) -aziridinyl ] Aziridine type crosslinking agents such as triphosphatriazine; Chelate type crosslinking agents such as aluminum chelate; These crosslinking agents may be used alone or in combination of two or more.
- an isocyanate-based crosslinking agent is preferable from the viewpoints of increasing cohesive force and improving adhesive force, and availability.
- the blending amount of the crosslinking agent is preferably 0.01 to 10 parts by weight, more preferably 0.03 to 7 parts by weight, and still more preferably 0 with respect to 100 parts by weight of the adhesive resin from the viewpoint of promoting the crosslinking reaction. .05 to 4 parts by mass.
- an adhesive composition when an adhesive composition is energy-beam curable, it is preferable that an adhesive composition contains a photoinitiator further.
- the curing reaction of the pressure-sensitive adhesive composition can sufficiently proceed even with relatively low energy energy rays such as ultraviolet rays.
- photopolymerization initiator examples include benzoin compounds, acetophenone compounds, acylphosphinoxide compounds, titanocene compounds, thioxanthone compounds, peroxide compounds, and photosensitizers such as amines and quinones.
- 1-hydroxycyclohexyl phenyl ketone 2-hydroxy-2-methyl-1-phenyl-propan-1-one
- benzoin benzoin methyl ether
- benzoin ethyl ether benzoin isopropyl ether
- benzylphenyl Such as sulfide, tetramethylthiuram monosulfide, azobisisobutyronitrile, dibenzyl, diacetyl, 8-chloroanthraquinone, bis (2,4,6-trimethylbenzoyl) phenylphosphine oxide, etc. It is below.
- photopolymerization initiators may be used alone or in combination of two or more.
- the blending amount of the photopolymerization initiator is preferably 0.01 to 10 parts by mass, more preferably 0.03 to 5 parts by mass, and further preferably 0.05 to 5 parts by mass with respect to 100 parts by mass of the adhesive resin. It is.
- the pressure-sensitive adhesive composition may contain other additives as long as the effects of the present invention are not impaired.
- additives include antistatic agents, antioxidants, softeners (plasticizers), fillers, rust inhibitors, pigments, and dyes.
- the amount of the additives is preferably 0.01 to 6 parts by mass with respect to 100 parts by mass of the adhesive resin.
- the adhesive composition may be further diluted with an organic solvent from the viewpoint of improving the applicability to the base material, the buffer layer and the release sheet, and may be in the form of a solution of the adhesive composition.
- organic solvent include methyl ethyl ketone, acetone, ethyl acetate, tetrahydrofuran, dioxane, cyclohexane, n-hexane, toluene, xylene, n-propanol, isopropanol and the like.
- the organic solvent used at the time of the synthesis of the adhesive resin may be used as it is, or other than the organic solvent used at the time of synthesis so that the solution of the pressure-sensitive adhesive composition can be uniformly applied.
- One or more organic solvents may be added.
- a release sheet may be attached to the surface of the adhesive tape. Specifically, the release sheet is attached to the surface of the pressure-sensitive adhesive layer of the pressure-sensitive adhesive tape. The release sheet is attached to the surface of the pressure-sensitive adhesive layer to protect the pressure-sensitive adhesive layer during transportation and storage. The release sheet is detachably attached to the adhesive tape, and is peeled off from the adhesive tape and removed before the adhesive tape is used (that is, before attaching the wafer). As the release sheet, a release sheet having at least one surface subjected to a release treatment is used, and specifically, a release sheet coated on the surface of the release sheet substrate may be used.
- a resin film is preferable, and examples of the resin constituting the resin film include polyester resin films such as polyethylene terephthalate resin, polybutylene terephthalate resin, and polyethylene naphthalate resin, polypropylene resin, polyethylene resin, and the like. Polyolefin resin and the like.
- the release agent include rubber elastomers such as silicone resins, olefin resins, isoprene resins, and butadiene resins, long chain alkyl resins, alkyd resins, and fluorine resins.
- the thickness of the release sheet is not particularly limited, but is preferably 10 to 200 ⁇ m, more preferably 20 to 150 ⁇ m.
- the manufacturing method of the adhesive tape which has a base material, the buffer layer provided in the one surface side of the said base material, and the adhesive layer provided in the other surface side of the said base material is as follows. is there.
- the buffer layer is formed from a composition for forming a buffer layer containing an energy beam polymerizable compound
- a buffer layer provided by coating and curing the composition for forming a buffer layer on a release sheet, and a base material are laminated together, and the release sheet is removed to obtain a laminate of the buffer layer and the substrate.
- a buffer layer is a layer containing a polyolefin resin film
- the laminated body of a buffer layer and a base material is obtained by bonding a buffer layer and a base material.
- the pressure-sensitive adhesive layer provided on the release sheet is bonded to the base material side of the laminate, and the pressure-sensitive adhesive tape having the release sheet attached to the surface of the pressure-sensitive adhesive layer can be produced.
- the release sheet attached to the surface of the pressure-sensitive adhesive layer may be appropriately peeled and removed before using the pressure-sensitive adhesive tape.
- a composition for forming a buffer layer is directly applied on the release sheet by a known application method to form a coating film, and this coating film is irradiated with energy rays.
- a buffer layer can be formed.
- the buffer layer may be formed by directly applying the buffer layer forming composition on one side of the substrate and irradiating the coating film with energy rays.
- Examples of the method for applying the buffer layer forming composition include spin coating, spray coating, bar coating, knife coating, roll coating, blade coating, die coating, and gravure coating. Moreover, in order to improve applicability
- the composition for forming a buffer layer contains an energy ray polymerizable compound
- the buffer layer may be cured by a single curing process, or may be performed in multiple steps.
- the coating film on the release sheet may be completely cured to form a buffer layer, and then bonded to the base material.
- a semi-cured buffer layer forming film is formed without completely curing the coating film.
- the buffer layer may be formed by irradiating energy rays again to be completely cured.
- an ultraviolet-ray is preferable.
- the coating film of the composition for forming a buffer layer may be exposed, but the coating film is covered with a release sheet or a substrate, and an energy ray is irradiated in a state where the coating film is not exposed. It is preferable to cure.
- the buffer layer is a layer containing a polyolefin resin film
- the buffer layer and the substrate may be bonded together by extrusion lamination. Specifically, using a T-die film forming machine or the like, the polyolefin resin constituting the buffer layer is melted and kneaded, and while moving the base material at a constant speed, on one surface side of the base material, The molten polyolefin resin is extruded and laminated.
- the buffer layer may be directly laminated on the base material by heat sealing or the like. Furthermore, it may be laminated via an easy adhesion layer by a method such as a dry lamination method.
- the pressure-sensitive adhesive (pressure-sensitive adhesive composition) is directly applied on the release sheet by a known application method, and the coating film is heated and dried, whereby the pressure-sensitive adhesive is obtained.
- a layer can be formed.
- an adhesive may be directly applied to one side of the substrate to form an adhesive layer.
- the method for applying the pressure-sensitive adhesive include the spray coating method, bar coating method, knife coating method, roll coating method, blade coating method, die coating method, and gravure coating method described in the buffer layer manufacturing method.
- the manufacturing method of the adhesive tape with which the buffer layer was provided on both surfaces of the base material obtained the laminated body by which the buffer layer, the base material, and the buffer layer were laminated
- the pressure-sensitive adhesive tape according to the present invention is preferably used when DBG is applied to the surface of a semiconductor wafer and backside grinding of the wafer is performed in DBG.
- the pressure-sensitive adhesive tape according to the present invention is preferably used for an LDBG from which a chip group having a small kerf width can be obtained when a semiconductor wafer is separated.
- the “chip group” refers to a plurality of wafer-shaped semiconductor chips held on the adhesive tape according to the present invention.
- a method for manufacturing a semiconductor device will be described more specifically below.
- the semiconductor device manufacturing method includes at least the following steps 1 to 4.
- Step 1 Step of applying the above-mentioned adhesive tape to the surface of the semiconductor wafer
- Step 2 Step of forming a groove from the front surface side of the semiconductor wafer or forming a modified region inside the semiconductor wafer from the front surface or the back surface of the semiconductor wafer
- Step 3 A semiconductor wafer having an adhesive tape attached to the surface and having the groove or the modified region formed thereon is ground from the back side, and separated into a plurality of chips starting from the groove or the modified region.
- Step 4 Step of peeling the adhesive tape from the singulated semiconductor wafer (that is, a plurality of semiconductor chips)
- step 1 the pressure-sensitive adhesive tape of the present invention is attached to the surface of a semiconductor wafer via a pressure-sensitive adhesive layer.
- This step may be performed before step 2 described later, but may be performed after step 2.
- step 1 when forming a modified region in a semiconductor wafer, it is preferable to perform step 1 before step 2.
- step 1 is performed after step 2. That is, the pressure-sensitive adhesive tape is affixed in step 1 to the surface of the wafer having the grooves formed in step 2 described later.
- the semiconductor wafer used in this manufacturing method may be a silicon wafer, or may be a wafer such as gallium arsenide, silicon carbide, lithium tantalate, lithium niobate, gallium nitride, indium phosphide, or a glass wafer. .
- the thickness of the semiconductor wafer before grinding is not particularly limited, but is usually about 500 to 1000 ⁇ m.
- a semiconductor wafer usually has a circuit formed on the surface thereof. Formation of the circuit on the wafer surface can be performed by various methods including conventionally used methods such as an etching method and a lift-off method.
- a groove is formed from the front surface side of the semiconductor wafer, or a modified region is formed in the semiconductor wafer from the front surface or the back surface of the semiconductor wafer.
- the groove formed in this step is a groove having a depth shallower than the thickness of the semiconductor wafer.
- the groove can be formed by dicing using a conventionally known wafer dicing apparatus or the like. Further, the semiconductor wafer is divided into a plurality of semiconductor chips along the groove in step 3 to be described later.
- the modified region is a brittle portion of the semiconductor wafer, and the semiconductor wafer is destroyed by thinning the semiconductor wafer or applying grinding force due to grinding in the grinding process.
- This is a region that is a starting point for singulation. That is, in step 2, the groove and the modified region are formed along a dividing line when the semiconductor wafer is divided into semiconductor chips in step 3 to be described later.
- the modified region is formed by laser irradiation focused on the inside of the semiconductor wafer, and the modified region is formed inside the semiconductor wafer. Laser irradiation may be performed from the front side or the back side of the semiconductor wafer.
- the semiconductor wafer is irradiated with the laser through the adhesive tape.
- the semiconductor wafer to which the adhesive tape is applied and the groove or the modified region is formed is placed on the chuck table and is sucked and held by the chuck table. At this time, the surface of the semiconductor wafer is adsorbed by being arranged on the table side.
- step 3 the back surface of the semiconductor wafer on the chuck table is ground to divide the semiconductor wafer into a plurality of semiconductor chips.
- the back surface grinding is performed so that the semiconductor wafer is thinned at least to a position reaching the bottom of the groove.
- the groove becomes a notch penetrating the wafer, and the semiconductor wafer is divided by the notch and separated into individual semiconductor chips.
- the grinding surface may reach the modified region by grinding, but may not reach the modified region strictly.
- the semiconductor wafer may be ground to a position close to the modified region so that the semiconductor wafer is broken and separated into semiconductor chips starting from the modified region.
- the actual separation of the semiconductor chip may be performed by attaching a pickup tape described later and then stretching the pickup tape.
- dry polishing may be performed prior to chip pickup.
- the shape of the separated semiconductor chip may be a square or may be an elongated shape such as a rectangle.
- the thickness of the individual semiconductor chip is not particularly limited, but is preferably about 5 to 100 ⁇ m, more preferably 10 to 45 ⁇ m.
- LDBG a modified region is provided inside the wafer with a laser, and the wafer is separated into pieces by stress at the time of wafer back grinding.
- the thickness of the separated semiconductor chip is 50 ⁇ m or less, more preferably 10 ⁇ m. It becomes easy to set it to ⁇ 45 ⁇ m.
- the size of the individual semiconductor chip is not particularly limited, but the chip size is preferably less than 600 mm 2 , more preferably less than 400 mm 2 , and even more preferably less than 300 mm 2 .
- the pressure-sensitive adhesive tape for semiconductor processing is peeled from the separated semiconductor wafer (that is, a plurality of semiconductor chips).
- This step is performed, for example, by the following method.
- a pick-up tape is affixed to the back side of the separated semiconductor wafer, and the position and orientation are adjusted so that pick-up is possible.
- the ring frame disposed on the outer peripheral side of the wafer is also bonded to the pick-up tape, and the outer peripheral edge of the pickup tape is fixed to the ring frame.
- a wafer and a ring frame may be bonded to the pickup tape at the same time, or may be bonded at different timings.
- the adhesive tape is peeled from the plurality of semiconductor chips held on the pickup tape.
- a pickup tape is not specifically limited, For example, it is comprised by the adhesive sheet provided with the adhesive layer provided in the one surface of the base material and the base material.
- an adhesive tape can be used instead of the pickup tape.
- the adhesive tape is a laminate of a film adhesive and a release sheet, a laminate of a dicing tape and a film adhesive, and an adhesive layer and a release sheet having the functions of both a dicing tape and a die bonding tape.
- the dicing die-bonding tape etc. which become.
- a film adhesive may be bonded to the back side of the separated semiconductor wafer before the pickup tape is applied. When using a film adhesive, the film adhesive may have the same shape as the wafer.
- the adhesive tape according to the present invention can be used when a semiconductor wafer is separated into pieces. It can be preferably used for an LDBG from which a chip group having a smaller width and a thinner thickness can be obtained.
- the pressure-sensitive adhesive tape according to the present invention can be used for ordinary back surface grinding, and can also be used for temporarily holding a workpiece during processing of glass, ceramic, or the like. It can also be used as various re-peeling adhesive tapes.
- the pressure-sensitive adhesive tape means a laminate including a base material and a pressure-sensitive adhesive layer provided on at least one surface side of the base material.
- it does not prevent including other structural layers other than these.
- you may include the adhesive layer provided in the at least one surface side of the base material, and the buffer layer provided in the other surface side of the base material.
- the primer layer may be formed in the base-material surface at the side of an adhesive layer, and the peeling sheet for protecting an adhesive layer until the time of use may be laminated
- the substrate may be a single layer or a multilayer. The same applies to the pressure-sensitive adhesive layer.
- the gist of the second embodiment of the present invention is as follows.
- a pressure-sensitive adhesive tape for semiconductor processing which is 500 or more and 9000 or less at 60 ° C.
- the semiconductor wafer having the adhesive tape attached to the surface and having the groove or the modified region formed thereon is ground from the back side, and separated into a plurality of chips starting from the groove or the modified region. Process, Peeling the adhesive tape from the plurality of chips;
- a method for manufacturing a semiconductor device comprising:
- the pressure-sensitive adhesive layer may be a single layer or a multilayer.
- the pressure-sensitive adhesive layer refers to a layer interposed between the base material and the wafer when the pressure-sensitive adhesive sheet is attached to the semiconductor wafer.
- the plurality of layers are regarded as one pressure-sensitive adhesive layer. Therefore, the characteristics such as the creep amount, thickness, and shear storage modulus of the pressure-sensitive adhesive layer described in detail below are the same as those when a single pressure-sensitive adhesive layer exists between the substrate and the wafer. Yes, when there are a plurality of layers between the substrate and the wafer, this is a characteristic when the plurality of layers are regarded as one adhesive layer.
- the numerical range for each property should be satisfied by a single adhesive layer when there is a single adhesive layer between the substrate and the wafer.
- the plurality of layers should be satisfied as one pressure-sensitive adhesive layer.
- a base material consists of a several layer, if the Young's modulus in 23 degreeC in these several layers is 1000 Mpa or more, it will be considered as one base material.
- the Young's modulus at 23 ° C. of the base material provided with the easy adhesion layer is 1000 MPa or more, the base material and the easy adhesion layer are regarded as one base material, and the easy adhesion layer is not included in the pressure-sensitive adhesive layer.
- the product (N) ⁇ (C) of (N) and (C) when the thickness of the pressure-sensitive adhesive layer is (N) ⁇ m and the creep amount is (C) ⁇ m is 30 ° C. 500 or more and 9000 or less at 60 ° C.
- a circuit or the like is formed on the surface of the semiconductor wafer and is usually uneven.
- the product (N) ⁇ (C) of (N) and (C) at 30 ° C. of the pressure-sensitive adhesive layer is preferably 500 to 8000, more preferably 1000 to 7000.
- the product (N) ⁇ (C) of (N) and (C) at 60 ° C. of the pressure-sensitive adhesive layer is preferably 0 to 8000, more preferably 1000 to 7000.
- the thickness (N) of the pressure-sensitive adhesive layer is preferably less than 100 ⁇ m, more preferably 5 to 80 ⁇ m, and even more preferably 10 to 70 ⁇ m.
- the creep amount (C) of the pressure-sensitive adhesive layer is not particularly limited as long as the product (N) ⁇ (C) of (N) and (C) is in the above range, but the creep amount at 30 ° C. is more than 5 ⁇ m. It is preferably 50 ⁇ m or more.
- the creep amount at 60 ° C. is preferably 210 ⁇ m or less, more preferably 115 ⁇ m or less.
- the pressure-sensitive adhesive layer has a creep amount at 30 ° C. of 5 ⁇ m or less, the unevenness on the wafer surface and the pressure-sensitive adhesive layer may not be sufficiently contacted when the adhesive tape is applied to the uneven wafer surface.
- the creep amount at 60 ° C. exceeds 210 ⁇ m, when the temperature of the semiconductor wafer rises to about 60 ° C. due to friction with a grinder or the like during back surface grinding, the chip position is displaced and die shift occurs. There is a fear.
- the amount of creep of the pressure-sensitive adhesive layer is determined by combining the adhesive tape cut into a width of 25 mm and a length of 150 mm with the mark of the adherend for holding force test (SUS304). Pasting (2kg roll, 5 reciprocations) so that the pasting area is 25mm wide x 25mm long to make a test sample, then using a holding force tester, load with 1kg weight under 30 ° C and 60 ° C environment ( 9.8 N) to measure the holding force. The test time is 10,000 seconds, and the amount of deviation at that time is the creep amount (C) [ ⁇ m].
- the pressure-sensitive adhesive layer is not particularly limited as long as it has an appropriate pressure-sensitive adhesive property at room temperature, but the shear storage modulus at 30 ° C. is preferably 0.03 MPa or more, and the shear storage modulus at 60 ° C. It is preferably 0.20 MPa or less.
- the shear storage modulus at 30 ° C. is preferably 0.03 MPa or more, the adhesive surface of the wafer surface is sufficiently brought into contact with the adhesive layer when the adhesive tape is applied to the uneven wafer surface, and the adhesive layer It becomes possible to exhibit adhesiveness appropriately.
- the shear storage elastic modulus at 60 ° C.
- the shear storage elastic modulus of an adhesive layer means the shear storage elastic modulus before hardening by energy ray irradiation, when an adhesive layer is formed from an energy ray-curable adhesive.
- the shear storage modulus of the pressure-sensitive adhesive layer at 30 ° C. is more preferably 0.05 to 0.18 MPa, still more preferably 0.10 to 0.15 MPa. Further, the shear storage modulus at 60 ° C. of the pressure-sensitive adhesive layer is more preferably 0.01 to 0.15 MPa, and further preferably 0.03 to 0.10 MPa.
- the shear storage modulus can be measured by the following method.
- a measurement sample is obtained by punching a pressure-sensitive adhesive layer having a thickness of about 0.5 to 1 mm into a circle having a diameter of 7.9 mm.
- ARES manufactured by Rheometric Co. the elastic modulus of the measurement sample is measured when the temperature is changed at a temperature rise rate of 3 ° C./min in a temperature range of ⁇ 30 ° C. to 150 ° C. at a frequency of 1 Hz. .
- the elastic modulus at a measurement temperature of 30 ° C. is defined as a shear storage elastic modulus at 30 ° C.
- the elastic modulus at a measurement temperature of 60 ° C. is defined as a shear storage elastic modulus at 60 ° C.
- the adhesive layer in this embodiment should not be interpreted limitedly to these.
- the pressure-sensitive adhesive layer may be a single layer or a multilayer as long as the above properties are satisfied.
- the pressure-sensitive adhesive layer is formed of, for example, an acrylic pressure-sensitive adhesive, a urethane-based pressure-sensitive adhesive, a rubber-based pressure-sensitive adhesive, a silicone-based pressure-sensitive adhesive, etc., and an acrylic pressure-sensitive adhesive is preferable. Moreover, it is preferable that an adhesive layer is formed from an energy-beam curable adhesive.
- the pressure-sensitive adhesive layer is formed from an energy-ray curable pressure-sensitive adhesive, so that the shear storage elastic modulus at 30 ° C. is set within the above range before curing by irradiation with energy rays, and the peeling force after curing is 1000 mN. / 50 mm or less can be easily set.
- the same pressure-sensitive adhesive as in the first embodiment can be used.
- an energy ray curable adhesive composition (X-type adhesive composition) containing an energy ray curable compound other than an adhesive resin. It can be used.
- an energy ray curable adhesive an energy ray curable adhesive resin (adhesive resin II) having an unsaturated group introduced in the side chain of a non-energy ray curable adhesive resin as a main component
- a pressure-sensitive adhesive composition (Y-type pressure-sensitive adhesive composition) that does not contain an energy ray-curable compound other than the adhesive resin may also be used.
- an X ray and Y type combined type that is, an energy ray curable compound containing an energy ray curable compound other than the adhesive resin in addition to the energy ray curable adhesive resin II.
- You may use an adhesive composition (XY type adhesive composition).
- XY type adhesive composition it is preferable to use an XY type pressure-sensitive adhesive composition.
- the pressure-sensitive adhesive may be formed from a non-energy ray-curable pressure-sensitive adhesive composition that does not cure even when irradiated with energy rays.
- the non-energy ray curable adhesive composition contains at least the non-energy ray curable adhesive resin I, but does not contain the energy ray curable adhesive resin II and the energy ray curable compound described above. is there.
- adhesive resin is used as a term indicating one or both of the above-described adhesive resin I and adhesive resin II.
- Specific examples of the adhesive resin include acrylic resins, urethane resins, rubber resins, and silicone resins. Acrylic resins are preferable.
- acrylic adhesive in which an acrylic resin is used as the adhesive resin will be described in more detail.
- the acrylic polymer (b) is used for the acrylic resin.
- the acrylic polymer (b) is obtained by polymerizing a monomer containing at least an alkyl (meth) acrylate, and includes a structural unit derived from an alkyl (meth) acrylate.
- Examples of the alkyl (meth) acrylate include those having 1 to 20 carbon atoms in the alkyl group, and the alkyl group may be linear or branched.
- alkyl (meth) acrylate examples include methyl (meth) acrylate, ethyl (meth) acrylate, isopropyl (meth) acrylate, n-propyl (meth) acrylate, n-butyl (meth) acrylate, 2-ethylhexyl (meth) ) Acrylate, n-octyl (meth) acrylate, isooctyl (meth) acrylate, nonyl (meth) acrylate, decyl (meth) acrylate, undecyl (meth) acrylate, dodecyl (meth) acrylate and the like.
- Alkyl (meth) acrylates may be used alone or in combination of two or more.
- the acrylic polymer (b) preferably contains a structural unit derived from an alkyl (meth) acrylate having an alkyl group with 4 or more carbon atoms from the viewpoint of improving the adhesive strength of the pressure-sensitive adhesive layer.
- the alkyl (meth) acrylate preferably has 4 to 12 carbon atoms, more preferably 4 to 6 carbon atoms.
- the alkyl (meth) acrylate whose carbon number of an alkyl group is 4 or more is an alkyl acrylate.
- the alkyl (meth) acrylate having an alkyl group having 4 or more carbon atoms is based on the total amount of monomers constituting the acrylic polymer (b) (hereinafter also simply referred to as “monomer total amount”). Thus, it is preferably 40 to 98% by mass, more preferably 45 to 95% by mass, and still more preferably 50 to 90% by mass.
- the acrylic polymer (b) A copolymer containing a structural unit derived from an alkyl (meth) acrylate having 1 to 3 carbon atoms is preferred.
- the alkyl (meth) acrylate is preferably an alkyl (meth) acrylate having 1 or 2 carbon atoms, more preferably methyl (meth) acrylate, and most preferably methyl methacrylate.
- the alkyl (meth) acrylate having an alkyl group having 1 to 3 carbon atoms is preferably 1 to 50% by mass, more preferably 20 to 50% by mass, based on the total amount of monomers. More preferably, it is 30 to 50% by mass.
- the acrylic polymer (b) preferably has a structural unit derived from a functional group-containing monomer in addition to the structural unit derived from the alkyl (meth) acrylate.
- the functional group of the functional group-containing monomer include a hydroxyl group, a carboxy group, an amino group, and an epoxy group.
- the functional group-containing monomer reacts with a crosslinking agent described later to become a crosslinking starting point, or reacts with an unsaturated group-containing compound to introduce an unsaturated group into the side chain of the acrylic polymer (b). Is possible.
- Examples of the functional group-containing monomer include a hydroxyl group-containing monomer, a carboxy group-containing monomer, an amino group-containing monomer, and an epoxy group-containing monomer. These monomers may be used alone or in combination of two or more. Among these, a hydroxyl group-containing monomer and a carboxy group-containing monomer are preferable, and a hydroxyl group-containing monomer is more preferable.
- hydroxyl group-containing monomer examples include 2-hydroxyethyl (meth) acrylate, 2-hydroxypropyl (meth) acrylate, 3-hydroxypropyl (meth) acrylate, 2-hydroxybutyl (meth) acrylate, and 3-hydroxybutyl (meth) ) Acrylates, hydroxyalkyl (meth) acrylates such as 4-hydroxybutyl (meth) acrylate, and unsaturated alcohols such as vinyl alcohol and allyl alcohol.
- carboxy group-containing monomer examples include ethylenically unsaturated monocarboxylic acids such as (meth) acrylic acid and crotonic acid; ethylenically unsaturated dicarboxylic acids such as fumaric acid, itaconic acid, maleic acid and citraconic acid, and anhydrides thereof. , 2-carboxyethyl methacrylate and the like.
- the functional group monomer is preferably 1 to 35% by mass, more preferably 3 to 32% by mass, and still more preferably 6 to 30% by mass with respect to the total amount of monomers constituting the acrylic polymer (b).
- the acrylic polymer (b) is derived from a monomer copolymerizable with the above acrylic monomers such as styrene, ⁇ -methylstyrene, vinyl toluene, vinyl formate, vinyl acetate, acrylonitrile, acrylamide and the like.
- a structural unit may be included.
- the acrylic polymer (b) can be used as a non-energy ray curable adhesive resin I (acrylic resin).
- a resin obtained by reacting a functional group of the acrylic polymer (b) with a compound having a photopolymerizable unsaturated group also referred to as an unsaturated group-containing compound. Can be mentioned.
- An unsaturated group containing compound is a compound which has both the substituent which can be couple
- the photopolymerizable unsaturated group include a (meth) acryloyl group, a vinyl group, an allyl group, and a vinylbenzyl group, and a (meth) acryloyl group is preferable.
- the substituent that the unsaturated group-containing compound can bind to the functional group include an isocyanate group and a glycidyl group.
- examples of the unsaturated group-containing compound include (meth) acryloyloxyethyl isocyanate, (meth) acryloyl isocyanate, glycidyl (meth) acrylate, and the like.
- the unsaturated group-containing compound preferably reacts with a part of the functional group of the acrylic polymer (b), specifically, 50 to 98 mol of the functional group of the acrylic polymer (b).
- % Is preferably reacted with an unsaturated group-containing compound, more preferably 55 to 93 mol%.
- Mw weight average molecular weight of the acrylic resin is preferably 300,000 to 1,600,000, more preferably 400,000 to 1,400,000, still more preferably 500,000 to 1,200,000.
- the creep amount of the pressure-sensitive adhesive layer can be increased or decreased by adjusting the shear storage modulus by the type and amount of the crosslinking agent and the type and amount of the monomer.
- the energy ray-curable compound, the crosslinking agent, the photopolymerization initiator, and other additives in the pressure-sensitive adhesive layer of the second embodiment can be the same as those of the first embodiment.
- the manufacturing method of the base material, the buffer layer, the release sheet, and the semiconductor device in the second embodiment can be the same as that in the first embodiment.
- the manufacturing method of an adhesive tape it can be the same as that of 1st Embodiment except not having provided a buffer layer.
- Examples 1 to 6 and Comparative Example 1 The measurement methods and evaluation methods in Examples 1 to 6 and Comparative Example 1 are as follows.
- the Young's modulus of the substrate was calculated from a tensile strength and elongation chart obtained by conducting a tensile test using a tensile tester. Specifically, a measurement film having a width of 15 mm, a length of 150 mm, and a thickness of 50 ⁇ m made of the same material as the film or sheet constituting the substrate was prepared. It was installed in a tensile / compression tester (manufactured by A & D, product name “Tensilon”) so that the stretchable portion of the film for measurement was 100 mm. And it measured at 23 degreeC and the test speed of 200 mm / min, and calculated the Young's modulus from the inclination in the origin of the obtained chart.
- a buffer layer forming film having a thickness of 0.2 mm made of the buffer layer forming composition used in Examples 1 to 4 and Comparative Example 1 was formed on the first release sheet, and further on the buffer layer forming film The 2nd peeling sheet was bonded together.
- the first and second release sheets used were polyethylene terephthalate films (trade name “SP-PET 381031”, thickness: 38 ⁇ m, manufactured by Lintec Co., Ltd.) subjected to silicone release treatment. And the ultraviolet-ray was irradiated again from the 1st peeling sheet side, the said buffer layer formation film was hardened
- the above ultraviolet irradiation uses a belt conveyor type ultraviolet irradiation device (product name “ECS-401GX” manufactured by Eye Graphics Co., Ltd.) and a high pressure mercury lamp (device name “H04-L41” manufactured by Eye Graphics Co., Ltd.).
- the measurement was performed under irradiation conditions of a lamp height of 150 mm, a lamp output of 3 kW (converted output of 120 mW / cm), an illuminance of 160 mW / cm 2 with a light wavelength of 365 nm, and an irradiation amount of 500 mJ / cm 2 .
- an automatic dynamic viscoelasticity tester product name “Rheobibron DDV, manufactured by Orientec Co., Ltd.” was used using a test piece cut to a width of 4 mm ⁇ a length of 50 mm. -0.1FP "), the tensile storage elastic modulus and tensile loss elastic modulus were measured for 10 test pieces in the temperature range of -5 to 120 ° C at a measurement frequency of 1 Hz and a heating rate of 3 ° C / min.
- the buffer layer (LDPE having a thickness of 27.5 ⁇ m) used in Examples 5 and 6 was laminated, and the test buffer layer having a thickness of 0.1 mm was used as described above. Similar measurements were made.
- the average value of “tensile loss elastic modulus / tensile storage elastic modulus” at each temperature is calculated as tan ⁇ of the temperature, and the maximum value of tan ⁇ in the range of ⁇ 5 to 120 ° C. is determined as “maximum tan ⁇ of the buffer layer”. Values are shown in Table 1.
- the average value of the tensile storage modulus at 23 ° C. was E 23
- the average value of the tensile storage modulus at 60 ° C. was E 60
- the average value of the tensile storage modulus at 90 ° C. was E 90 .
- Example 1 Substrate A PET film with a double-sided easy-adhesion layer (Cosmo Shine A4300 manufactured by Toyobo Co., Ltd., thickness: 50 ⁇ m, Young's modulus at 23 ° C .: 2550 MPa) was prepared as a substrate.
- a double-sided easy-adhesion layer Cosmo Shine A4300 manufactured by Toyobo Co., Ltd., thickness: 50 ⁇ m, Young's modulus at 23 ° C .: 2550 MPa
- Buffer layer Synthesis of urethane acrylate oligomer
- Urethane acrylate oligomer Urethane acrylate oligomer (UA-1) having a weight average molecular weight (Mw) of about 5000 by reacting 2-hydroxyethyl acrylate with a terminal isocyanate urethane prepolymer obtained by reacting polycarbonate diol and isophorone diisocyanate.
- buffer layer forming composition 50 parts by mass of urethane acrylate oligomer (UA-1) synthesized above, 30 parts by mass of isobornyl acrylate (IBXA), 40 parts by mass of tetrahydrofurfuryl acrylate (THFA), and dipentaerythritol hexaacrylate (DPHA) 15 Formulated with 1 part by mass, and further with 1.0 part by mass of 2-hydroxy-2-methyl-1-phenyl-propan-1-one (product name “Irgacure 1173” manufactured by BASF Japan Ltd.) as a photopolymerization initiator Then, a composition for forming a buffer layer was prepared.
- IBXA isobornyl acrylate
- THFA tetrahydrofurfuryl acrylate
- DPHA dipentaerythritol hexaacrylate
- a buffer layer-forming composition was applied to the release-treated surface of another release sheet (trade name “SP-PET 381031” manufactured by Lintec Corporation) to form a coating film.
- the coating film was irradiated with ultraviolet rays, and the coating film was semi-cured to form a buffer layer forming film having a thickness of 53 ⁇ m.
- the above-mentioned ultraviolet irradiation uses a belt conveyor type ultraviolet irradiation device (manufactured by Eye Graphics, device name “US2-0801”) and a high-pressure mercury lamp (manufactured by Eye Graphics, device name “H08-L41”).
- the measurement was performed under irradiation conditions of a lamp height of 230 mm, an output of 80 mW / cm, a light wavelength of 365 nm, an illuminance of 90 mW / cm 2 , and an irradiation amount of 50 mJ / cm 2 .
- the surface of the formed buffer layer forming film and the base material are bonded together, and ultraviolet rays are irradiated again from the release sheet side on the buffer layer forming film to completely cure the buffer layer forming film, and the thickness is 53 ⁇ m.
- the buffer layer was formed.
- the above ultraviolet irradiation using the ultraviolet irradiation apparatus and a high-pressure mercury lamp described above, the lamp height 220 mm, in terms of output 120 mW / cm, the light wavelength 365nm illumination 160 mW / cm 2, irradiation dose 350 mJ / cm 2 Performed under conditions.
- an adhesive layer was bonded to the surface opposite to the surface on which the buffer layer of the base material was formed, to produce an adhesive tape for semiconductor processing.
- Example 2 In the preparation of the buffer layer forming composition, an adhesive tape was obtained in the same manner as in Example 1 except that the DPHA content was changed to 20 parts by mass.
- Example 3 In preparing the buffer layer forming composition, instead of DPHA, 20 parts by mass of pentaerythritol triacrylate (PETA, triester 57%, manufactured by Shin-Nakamura Chemical Co., Ltd., product name “A-TMM-3LM-N”) The adhesive tape was obtained like Example 1 except having used it.
- PETA pentaerythritol triacrylate
- Example 4 An adhesive tape was obtained in the same manner as in Example 1 except that the following buffer layer forming composition was used as the buffer layer forming composition.
- Urethane acrylate oligomer Urethane acrylate oligomer (UA-2) having a weight average molecular weight (Mw) of about 5000 by reacting 2-hydroxyethyl acrylate with a terminal isocyanate urethane prepolymer obtained by reacting polyester diol with isophorone diisocyanate.
- Example 5 A low density polyethylene film (thickness: 27.5 ⁇ m) was prepared as a buffer layer. Using the same base material as in Example 1, the buffer layer was laminated on both sides of the base material by a dry laminating method to obtain a laminate of the base material and the buffer layer laminated in the order of LDPE / PET / LDPE. .
- the pressure-sensitive adhesive layer was bonded to the obtained laminate in the same manner as in Example 1 to obtain a pressure-sensitive adhesive tape for semiconductor processing.
- An adhesive tape was obtained in the same manner as in Example 5 except that the thickness of the adhesive layer was 60 ⁇ m.
- Example 1 An adhesive tape was obtained in the same manner as in Example 1 except that the following buffer layer forming composition was used as the buffer layer forming composition.
- buffer layer forming composition 50 parts by mass of urethane acrylate oligomer (UA-2), 40 parts by mass of isobornyl acrylate (IBXA), and 20 parts by mass of 2-hydroxy-3-phenoxypropyl acrylate (HPPA) are blended, and further a photopolymerization initiator.
- 2-hydroxy-2-methyl-1-phenyl-propan-1-one product name “Irgacure 1173” manufactured by BASF Japan Ltd.
- the occurrence of cracks can be reduced with the adhesive tape for semiconductor processing according to the present invention.
- the pressure-sensitive adhesive sheet for semiconductor processing according to the present invention can reduce the number of large cracks and medium cracks.
- a chip having a large crack or a medium crack is highly likely to break due to the progress of the crack in the manufacturing process of the semiconductor device. Therefore, it can be seen that when the adhesive tape according to the present invention is used, the productivity of the semiconductor device is excellent.
- Examples 7 to 17 and Comparative Examples 2 to 6 The measurement methods and evaluation methods in Examples 7 to 17 and Comparative Examples 2 to 6 are as follows.
- Shear storage modulus G ′ The shear storage modulus G ′ of the buffer layer was formed from the solutions of the pressure-sensitive adhesive compositions used in Examples 7 to 17 and Comparative Examples 2 to 6 using a viscoelasticity measuring device (DYNAMIC ANALYZER RDA ⁇ manufactured by Rheometrics). A sample in which the single-layer pressure-sensitive adhesive was laminated was measured under the following conditions. ⁇ Sample size: 8mm diameter x 3mm thickness Measurement temperature: 30 ° C and 60 ° C ⁇ Measurement frequency: 1Hz
- the thickness of the base material was measured according to JISK7130 using a constant pressure thickness measuring instrument (product name “PG-02” manufactured by Teclock Co., Ltd.).
- the thickness (N) of the pressure-sensitive adhesive layer is determined by measuring the thickness of the surface protective sheet with the PET film subjected to the silicone release treatment, and subtracting the thickness of the base material and the PET film after the silicone release treatment from the thickness. Value [ ⁇ m].
- a silicon wafer having a diameter of 12 inches and a thickness of 775 ⁇ m was pasted with a semiconductor processing adhesive sheet manufactured in Examples and Comparative Examples using RAD-3510F / 12 manufactured by Lintec, and stealthed to a chip size of 11 mm ⁇ 8 mm using DFL 7361 manufactured by Disco Corporation. Dicing. Next, grinding (dry polishing) was performed using DGP8761 manufactured by Disco Corporation until the thickness reached 20 ⁇ m.
- the average value of A ave , B ave , C ave , D ave at the outer peripheral part [(A ave + B ave + C ave + D ave ) / 4] is ⁇ , and ⁇ / ⁇ when E ave at the central part is ⁇ Based on the values, the size of the die shift was evaluated according to the following criteria. ⁇ : ⁇ / ⁇ ⁇ 3.0 ⁇ : 3.0 ⁇ / ⁇ 5.0 ⁇ : 5.0 ⁇ / ⁇
- Example 7 Substrate A PET film with a double-sided easy-adhesion layer (Cosmo Shine A4300, manufactured by Toyobo Co., Ltd., thickness: 50 ⁇ m, Young's modulus at 23 ° C .: 2550 MPa, breaking strength: 55.3 MJ / m 3 ) was prepared as a substrate.
- a double-sided easy-adhesion layer Cosmo Shine A4300, manufactured by Toyobo Co., Ltd., thickness: 50 ⁇ m, Young's modulus at 23 ° C .: 2550 MPa, breaking strength: 55.3 MJ / m 3
- Laminate base material and buffer layer
- a low density polyethylene film (thickness: 27.5 ⁇ m) was prepared as a buffer layer.
- the buffer layer was laminated on both surfaces of the base material by a dry laminating method to obtain a laminate (A1) of the base material and the buffer layer laminated in the order of LDPE / PET / LDPE.
- Pressure-sensitive adhesive layer (Preparation of pressure-sensitive adhesive composition B1) An acrylic polymer (b1) obtained by copolymerizing 40 parts by mass of n-butyl acrylate (BA), 30 parts by mass of methyl methacrylate (MMA) and 28 parts by mass of 2-hydroxyethyl acrylate (2HEA) By reacting 2-methacryloyloxyethyl isocyanate (MOI) so as to add to 90 mol% of the total hydroxyl groups of the polymer (b1), an energy ray curable acrylic resin (Mw: 500,000) is obtained. Obtained.
- BA n-butyl acrylate
- MMA methyl methacrylate
- 2HEA 2-hydroxyethyl acrylate
- MOI 2-methacryloyloxyethyl isocyanate
- this energy ray curable acrylic resin 100 parts by mass of this energy ray curable acrylic resin, 6 parts by mass of polyfunctional urethane acrylate which is an energy ray curable compound, and 1 part by mass of an isocyanate crosslinking agent (product name “Coronate L” manufactured by Tosoh Corporation) 1 part by weight of bis (2,4,6-trimethylbenzoyl) phenylphosphine oxide as a photopolymerization initiator, diluted with methyl ethyl ketone and coated with a pressure-sensitive adhesive composition having a solid content of 35% by weight (B1 ) Was prepared.
- an isocyanate crosslinking agent product name “Coronate L” manufactured by Tosoh Corporation
- Example 8 A semiconductor processing pressure-sensitive adhesive tape was obtained in the same manner as in Example 7 except that the thickness of the pressure-sensitive adhesive layer was changed to 20 ⁇ m.
- Example 9 Except having changed the thickness of the adhesive layer into 60 micrometers, it carried out similarly to Example 7, and obtained the adhesive tape for semiconductor processing.
- Example 10 An adhesive tape for semiconductor processing was obtained in the same manner as in Example 7 except that the adhesive composition was changed to B2 below and the thickness of the adhesive layer was changed to 30 ⁇ m.
- this energy ray curable acrylic resin 100 parts by mass of this energy ray curable acrylic resin, 6 parts by mass of polyfunctional urethane acrylate which is an energy ray curable compound, and 1 part by mass of an isocyanate crosslinking agent (product name “Coronate L” manufactured by Tosoh Corporation) And 1 part by weight of bis (2,4,6-trimethylbenzoyl) phenylphosphine oxide as a photopolymerization initiator, diluted with methyl ethyl ketone, and coated with a pressure-sensitive adhesive composition (B2) having a solid content concentration of 32% by weight A liquid was prepared.
- an isocyanate crosslinking agent product name “Coronate L” manufactured by Tosoh Corporation
- Example 11 A semiconductor processing pressure-sensitive adhesive tape was obtained in the same manner as in Example 10 except that the thickness of the pressure-sensitive adhesive layer was changed to 40 ⁇ m.
- Example 12 A pressure-sensitive adhesive composition for semiconductor processing was obtained in the same manner as in Example 7 except that the pressure-sensitive adhesive composition was changed to B3 below and the thickness of the pressure-sensitive adhesive layer was changed to 30 ⁇ m.
- Example 13 Except having changed the adhesive composition into following B4, it carried out similarly to Example 7, and obtained the adhesive tape for semiconductor processing.
- this energy ray curable acrylic resin 100 parts by mass of this energy ray curable acrylic resin, 6 parts by mass of polyfunctional urethane acrylate which is an energy ray curable compound, and 1 part by mass of an isocyanate crosslinking agent (product name “Coronate L” manufactured by Tosoh Corporation) 1 part by weight of bis (2,4,6-trimethylbenzoyl) phenylphosphine oxide as a photopolymerization initiator, diluted with methyl ethyl ketone, and coated with a pressure-sensitive adhesive composition having a solid content concentration of 35% by weight (B4 ) Was prepared.
- an isocyanate crosslinking agent product name “Coronate L” manufactured by Tosoh Corporation
- Example 14 The adhesive tape for semiconductor processing was obtained like Example 7 except having changed the laminated body into A2 below.
- Substrate A PET film with a double-sided easy-adhesion layer (Cosmo Shine A4300, manufactured by Toyobo Co., Ltd., thickness: 50 ⁇ m, Young's modulus at 23 ° C .: 2550 MPa, breaking strength: 55.3 MJ / m 3 ) was prepared as a substrate.
- Buffer layer Synthesis of urethane acrylate oligomer
- Urethane acrylate oligomer Urethane acrylate oligomer (UA-1) having a weight average molecular weight (Mw) of about 5000 by reacting 2-hydroxyethyl acrylate with a terminal isocyanate urethane prepolymer obtained by reacting polycarbonate diol and isophorone diisocyanate.
- buffer layer forming composition 50 parts by mass of the urethane acrylate oligomer (UA-1) synthesized above, 30 parts by mass of isobornyl acrylate (IBXA), 40 parts by mass of tetrahydrofurfuryl acrylate (THFA), and 15 of dipentaerythritol hexaacrylate (DPHA) Formulated with 1 part by mass, and further with 1.0 part by mass of 2-hydroxy-2-methyl-1-phenyl-propan-1-one (product name “Irgacure 1173” manufactured by BASF Japan Ltd.) as a photopolymerization initiator
- a buffer layer forming composition (a2) was prepared.
- the buffer layer-forming composition (a2) was applied to the release-treated surface of another release sheet (trade name “SP-PET 381031”, manufactured by Lintec Corporation) to form a coating film.
- the coating film was irradiated with ultraviolet rays, and the coating film was semi-cured to form a buffer layer forming film having a thickness of 53 ⁇ m.
- the above-mentioned ultraviolet irradiation uses a belt conveyor type ultraviolet irradiation device (manufactured by Eye Graphics, device name “US2-0801”) and a high-pressure mercury lamp (manufactured by Eye Graphics, device name “H08-L41”).
- the measurement was performed under irradiation conditions of a lamp height of 230 mm, an output of 80 mW / cm, a light wavelength of 365 nm, an illuminance of 90 mW / cm 2 , and an irradiation amount of 50 mJ / cm 2 .
- a buffer layer was formed to obtain a laminate (A2).
- the above ultraviolet irradiation using the ultraviolet irradiation apparatus and a high-pressure mercury lamp described above, the lamp height 220 mm, in terms of output 120 mW / cm, the light wavelength 365nm illumination 160 mW / cm 2, irradiation dose 350 mJ / cm 2 Performed under conditions.
- Example 15 A semiconductor processing pressure-sensitive adhesive tape was obtained in the same manner as in Example 14 except that the pressure-sensitive adhesive composition was changed to B2.
- Example 16 A pressure-sensitive adhesive composition for semiconductor processing was obtained in the same manner as in Example 14 except that the pressure-sensitive adhesive composition was changed to B5 below and the thickness of the pressure-sensitive adhesive layer was changed to 30 ⁇ m.
- this energy ray curable acrylic resin 100 parts by mass of this energy ray curable acrylic resin, 6 parts by mass of polyfunctional urethane acrylate which is an energy ray curable compound, and 1 part by mass of an isocyanate crosslinking agent (product name “Coronate L” manufactured by Tosoh Corporation) 1 part by weight of bis (2,4,6-trimethylbenzoyl) phenylphosphine oxide as a photopolymerization initiator, diluted with methyl ethyl ketone, and a coating solution of a pressure-sensitive adhesive composition having a solid content concentration of 32% by weight (B5 ) was prepared.
- an isocyanate crosslinking agent product name “Coronate L” manufactured by Tosoh Corporation
- Example 17 Except having changed the adhesive composition into following B6, it carried out similarly to Example 7, and obtained the adhesive tape for semiconductor processing.
- Example 2 A semiconductor processing pressure-sensitive adhesive tape was obtained in the same manner as in Example 7 except that the thickness of the pressure-sensitive adhesive layer was changed to 80 ⁇ m.
- Example 3 A semiconductor processing pressure-sensitive adhesive tape was obtained in the same manner as in Example 10 except that the thickness of the pressure-sensitive adhesive layer was changed to 60 ⁇ m.
- Example 4 A semiconductor processing adhesive tape was obtained in the same manner as in Example 12 except that the thickness of the adhesive layer was changed to 45 ⁇ m.
- Example 6 A semiconductor processing pressure-sensitive adhesive tape was obtained in the same manner as in Example 14 except that the thickness of the pressure-sensitive adhesive layer was changed to 80 ⁇ m.
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Polymers & Plastics (AREA)
- Medicinal Chemistry (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- General Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Physics & Mathematics (AREA)
- Mechanical Treatment Of Semiconductor (AREA)
- Adhesive Tapes (AREA)
- Laminated Bodies (AREA)
- Dicing (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Container, Conveyance, Adherence, Positioning, Of Wafer (AREA)
- Die Bonding (AREA)
Abstract
Description
〔1〕23℃におけるヤング率が1000MPa以上の基材と、粘着剤層とを有する粘着テープであって、
前記粘着剤層の厚みを(N)[μm]、クリープ量を(C)[μm]としたときの、(N)と(C)との積(N)×(C)が、30℃において500以上、かつ、60℃において9000以下である、半導体加工用粘着テープ。
前記半導体ウエハの表面側から溝を形成し、又は前記半導体ウエハの表面若しくは裏面から半導体ウエハ内部に改質領域を形成する工程と、
前記粘着テープが表面に貼付され、かつ前記溝又は前記改質領域が形成された半導体ウエハを、裏面側から研削して、前記溝又は前記改質領域を起点として複数のチップに個片化させる工程と、
前記複数のチップから前記粘着テープを剥離する工程と、
を備える半導体装置の製造方法。
本明細書において、例えば「(メタ)アクリレート」とは、「アクリレート」及び「メタクリレート」の双方を示す語として用いており、他の類似用語についても同様である。
半導体ウエハの「表面」とは回路が形成された面を指し、「裏面」とは回路が形成されていない面を指す。
半導体ウエハの個片化とは、半導体ウエハを回路毎に分割し、半導体チップを得ることを言う。
本発明の第1実施形態の要旨は以下の通りである。
〔1〕23℃におけるヤング率が1000MPa以上の基材と、当該基材の少なくとも一方の面側に設けられた緩衝層と、当該基材の他方の面側に設けられた粘着剤層とを有する粘着テープであって、
前記緩衝層の23℃における引張貯蔵弾性率(E23)が100~2000MPaであり、
前記緩衝層の60℃における引張貯蔵弾性率(E60)が20~1000MPaである、半導体加工用粘着テープ。
前記半導体ウエハの表面若しくは裏面から半導体ウエハ内部に改質領域を形成する工程と、
前記粘着テープが表面に貼付され、かつ前記改質領域が形成された半導体ウエハを、裏面側から研削して、前記改質領域を起点として複数のチップに個片化させる工程と、
前記複数のチップから前記粘着テープを剥離する工程と、
を備える半導体装置の製造方法。
以下に、第1実施形態に係る半導体加工用粘着テープの各部材の構成をさらに詳細に説明する。
基材は、23℃におけるヤング率が1000MPa以上である。ヤング率が1000MPa未満の基材を使用すると、粘着テープによる半導体ウエハ又は半導体チップに対する保持性能が低下し、裏面研削時の振動等を抑制することができず、半導体チップの欠けや破損が発生しやすくなる。一方、基材の23℃におけるヤング率を1000MPa以上とすることで、粘着テープによる半導体ウエハ又は半導体チップに対する保持性能が高まり、裏面研削時の振動等を抑制し、半導体チップの欠けや破損を防止できる。また、粘着テープを半導体チップから剥離する際の応力を小さくすることが可能になり、テープ剥離時に生じるチップ欠けや破損を防止できる。さらに、粘着テープを半導体ウエハに貼付する際の作業性も良好にすることが可能である。このような観点から、基材の23℃におけるヤング率は、好ましくは1800~30000MPa、より好ましくは2500~6000MPaである。
これら樹脂フィルムの中でも、ポリエステルフィルム、ポリアミドフィルム、ポリイミドフィルム、二軸延伸ポリプロピレンフィルムから選ばれる1種以上を含むフィルムが好ましく、ポリエステルフィルムを含むことがより好ましく、ポリエチレンテレフタレートフィルムを含むことがさらに好ましい。
また、基材の少なくとも一方の表面には、緩衝層及び粘着剤層の少なくとも一方との密着性を向上させるために、コロナ処理等の接着処理を施してもよい。また、基材は、上記した樹脂フィルムと、樹脂フィルムの少なくとも一方の表面に被膜された易接着層とを有しているものでもよい。
易接着層の厚さとしては、好ましくは0.01~10μm、より好ましくは0.03~5μmである。なお、本願実施例における易接着層の厚さは、基材の厚さに対して小さいため、易接着層を有する樹脂フィルムの厚みと基材の厚みとは実質的に同一である。また、易接着層の材質は柔らかいため、ヤング率に与える影響は小さく、基材のヤング率は、易接着層を有する場合でも、樹脂フィルムのヤング率と実質的に同一である。
緩衝層は、基材と比較して軟質の層であり、半導体ウエハの裏面研削時の応力を緩和して、半導体ウエハに割れ及び欠けが生じることを防止する。また、粘着テープを貼付した半導体ウエハは、裏面研削時に、粘着テープを介して真空テーブル上に配置されるが、粘着テープの構成層として緩衝層を有することで、真空テーブルに適切に保持されやすくなる。
上記の観点から、緩衝層の23℃における引張貯蔵弾性率(E23)は、好ましくは100~2000MPa、より好ましくは150~1000MPa、さらに好ましくは200~700MPaである。また、緩衝層の60℃における引張貯蔵弾性率(E60)は、好ましくは20~1000MPa、より好ましくは30~300MPa、さらに好ましくは40~200MPaである。さらに、緩衝層の90℃における引張貯蔵弾性率(E90)は好ましくは0.1~300MPa、より好ましくは5~100MPa、さらに好ましくは10~50MPaである。
引張貯蔵弾性率(E23)と引張貯蔵弾性率(E60)との比〔(E23)/(E60)〕は、23℃から60℃までの引張貯蔵弾性率の変化の指標であり、また、引張貯蔵弾性率(E23)と引張貯蔵弾性率(E90)との比〔(E23)/(E90)〕は、23℃から90℃までの引張貯蔵弾性率の変化の指標である。一般に、温度が上がると緩衝層の引張貯蔵弾性率は小さくなるが、(E23)/(E60)や(E23)/(E90)が小さいことは、引張貯蔵弾性率の温度依存性が小さいことを意味する。
23)と引張貯蔵弾性率(E90)との比を上記範囲とすることで、裏面研削時の摩擦熱
による温度変化に対する緩衝層の物性変化を小さくすることができる。その結果、上記温度領域において裏面研削時の応力による粘着テープの変形を防止すると共に、緩衝性能が適度に保たれ、チップクラックの発生を抑制できる。
上記の観点から、(E23)/(E60)≦33であることがより好ましく、1≦(E23)/(E60)≦18であることがさらに好ましい。また、(E23)/(E90)≦70であることがより好ましく、4≦(E23)/(E90)≦50であることがさらに好ましい。
なお、tanδは損失正接と呼ばれ、「引張損失弾性率/引張貯蔵弾性率」で定義され、動的粘弾性測定装置により対象物に与えた引張り応力やねじり応力等の応力に対する応答によって測定される値である。
なお、緩衝層がエネルギー線重合性化合物を含む緩衝層形成用組成物から形成される場合には、エネルギー線硬化前のゲル分率とエネルギー線硬化後のゲル分率のいずれかが上記範囲内にあればよい。
厚さ20μmの緩衝層を50mm×100mmのサイズに裁断して測定用サンプルとする。測定用サンプルを100mm×150mmサイズのナイロンメッシュ(メッシュサイズ200)に包み、測定用サンプル及びナイロンメッシュの質量を精密天秤にて秤量し、秤量した質量から、あらかじめ測定しておいたナイロンメッシュの質量を減じることで、測定用サンプルのみの質量を得る。このときの質量をM1とする。
次に、上記ナイロンメッシュに包まれた測定用サンプルを、25℃の酢酸エチル100mLに24時間浸漬させる。そして、測定用サンプルを取り出し、120℃で1時間乾燥させ、次いで、温度23℃、相対湿度50%の条件下に1時間放置して調湿を行う。その後の測定用サンプル及びナイロンメッシュの質量を精密天秤にて秤量し、秤量した質量から、あらかじめ測定しておいたナイロンメッシュの質量を減じることで、測定用サンプルのみの質量を得る。このときの質量をM2とする。ゲル分率(%)は以下の式により算出できる。
ゲル分率(%)=(M2/M1)×100
以下、エネルギー線重合性化合物を含む緩衝層形成用組成物から形成される層に含まれる各成分、ポリオレフィン樹脂フィルムを含む層に含まれる各成分の順に説明する。
エネルギー線重合性化合物を含む緩衝層形成用組成物は、エネルギー線が照射されることで硬化することが可能になる。なお、「エネルギー線」とは、紫外線、電子線等を指し、好ましくは紫外線を使用する。
また、エネルギー線重合性化合物を含む緩衝層形成用組成物は、より具体的には、ウレタン(メタ)アクリレート(a1)と多官能重合性化合物(a2)とを含むことが好ましい。緩衝層形成用組成物は、これら2成分を含有することで、緩衝層の引張貯蔵弾性率(E23、E60、E90)、及びtanδの最大値を上記した範囲内としやすくなる。また、緩衝層形成用組成物は、これらの観点から、上記(a1)及び(a2)成分に加えて、環形成原子数6~20の脂環基又は複素環基を有する重合性化合物(a3)及び/又は官能基を有する重合性化合物(a4)を含有することがより好ましい。また、緩衝層形成用組成物は、上記(a1)~(a4)成分に加えて、光重合開始剤を含有することがさらに好ましく、本発明の効果を損なわない範囲において、その他の添加剤や樹脂成分を含有してもよい。
以下、エネルギー線重合性化合物を含む緩衝層形成用組成物中に含まれる各成分について詳細に説明する。
ウレタン(メタ)アクリレート(a1)とは、少なくとも(メタ)アクリロイル基及びウレタン結合を有する化合物であり、エネルギー線照射により重合硬化する性質を有するものである。ウレタン(メタ)アクリレート(a1)は、オリゴマーまたはポリマーである。
成分(a1)は、例えば、ポリオール化合物と、多価イソシアネート化合物とを反応させて得られる末端イソシアネートウレタンプレポリマーに、ヒドロキシル基を有する(メタ)アクリレートを反応させて得ることができる。なお、成分(a1)は、単独で又は2種以上を組み合わせて用いてもよい。
なお、ポリオール化合物としては、2官能のジオール、3官能のトリオール、4官能以上のポリオールのいずれであってもよいが、2官能のジオールが好ましく、ポリエステル型ジオールまたはポリカーボネート型ジオールがより好ましい。
これらの中でも、イソホロンジイソシアネート、ヘキサメチレンジイソシアネート、キシリレンジイソシアネートが好ましい。
これらの中でも、ヒドロキシアルキル(メタ)アクリレートが好ましく、2-ヒドロキシエチル(メタ)アクリレートがより好ましい。
緩衝層形成用組成物中の成分(a1)の含有量は、緩衝層形成用組成物の全量(100質量%)に対して、好ましくは10~70質量%、より好ましくは20~60質量%、さらに好ましくは25~55質量%、特に好ましくは30~50質量%である。
多官能重合性化合物とは、光重合性不飽和基を2つ以上有する化合物をいう。光重合性不飽和基は、炭素-炭素二重結合を含む官能基であり、例えば、(メタ)アクリロイル基、ビニル基、アリル基、ビニルベンジル基等が挙げられる。光重合性不飽和基は2種以上を組み合わせてもよい。多官能重合性化合物中の光重合性不飽和基と成分(a1)中の(メタ)アクリロイル基とが反応したり、成分(a2)中の光重合性不飽和基同士が反応することで、三次元網目構造(架橋構造)が形成される。多官能重合性化合物を使用すると、光重合性不飽和基を1つしか含まない化合物を使用した場合と比較して、エネルギー線照射により形成される架橋構造が増加するため、緩衝層が特異な粘弾性を示し、引張貯蔵弾性率(E23、E60、E90)やtanδの最大値を上記範囲に制御することが容易になる。
なお、成分(a2)は、単独で又は2種以上を組み合わせて用いてもよい。
これらの中でも、ジペンタエリスリトールヘキサ(メタ)アクリレートが好ましい。
成分(a3)は、環形成原子数6~20の脂環基又は複素環基を有する重合性化合物であり、さらには、少なくとも1つの(メタ)アクリロイル基を有する化合物であることが好ましく、より好ましくは1つの(メタ)アクリロイル基を有する化合物である。成分(a3)を用いることで、得られる緩衝層形成用組成物の成膜性を向上させることができる。
なお、環形成原子数とは、原子が環状に結合した構造の化合物の当該環自体を構成する原子の数を表し、環を構成しない原子(例えば、環を構成する原子に結合した水素原子)や、当該環が置換基によって置換される場合の置換基に含まれる原子は環形成原子数には含まない。
なお、成分(a3)は、単独で又は2種以上を組み合わせて用いてもよい。
脂環基含有(メタ)アクリレートの中ではイソボルニル(メタ)アクリレートが好ましく、複素環基含有(メタ)アクリレートの中ではテトラヒドロフルフリル(メタ)アクリレートが好ましい。
また、緩衝層形成用組成物中の成分(a2)と成分(a3)との含有量比〔(a2)/(a3)〕は、好ましくは0.1~3.0、より好ましくは0.15~2.0、さらに好ましくは0.18~1.0、特に好ましくは0.2~0.5である。
成分(a4)は、水酸基、エポキシ基、アミド基、アミノ基等の官能基を含有する重合性化合物であり、さらには、少なくとも1つの(メタ)アクリロイル基を有する化合物であることが好ましく、より好ましくは1つの(メタ)アクリロイル基を有する化合物である。
成分(a4)は、成分(a1)との相溶性が良好であり、緩衝層形成用組成物の粘度を適度な範囲に調整しやすくなる。また、当該組成物から形成される緩衝層の引張貯蔵弾性率(E23、E60、E90)やtanδの最大値を上記した範囲としやすくなり、緩衝層を比較的薄くしても緩衝性能が良好になる。
成分(a4)としては、例えば、水酸基含有(メタ)アクリレート、エポキシ基含有化合物、アミド基含有化合物、アミノ基含有(メタ)アクリレート等が挙げられる。
エポキシ基含有化合物としては、例えば、グリシジル(メタ)アクリレート、メチルグリシジル(メタ)アクリレート、アリルグリシジルエーテル等が挙げられ、これらの中では、グリシジル(メタ)アクリレート、メチルグリシジル(メタ)アクリレート等のエポキシ基含有(メタ)アクリレートが好ましい。
アミド基含有化合物としては、例えば、(メタ)アクリルアミド、N,N-ジメチル(メタ)アクリルアミド、N-ブチル(メタ)アクリルアミド、N-メチロール(メタ)アクリルアミド、N-メチロールプロパン(メタ)アクリルアミド、N-メトキシメチル(メタ)アクリルアミド、N-ブトキシメチル(メタ)アクリルアミド等が挙げられる。
アミノ基含有(メタ)アクリレートとしては、例えば、第1級アミノ基含有(メタ)アクリレート、第2級アミノ基含有(メタ)アクリレート、第3級アミノ基含有(メタ)アクリレート等が挙げられる。
なお、成分(a4)は、単独で又は2種以上を組み合わせて用いてもよい。
また、緩衝層形成用組成物中の成分(a3)と成分(a4)との含有量比〔(a3)/(a4)〕は、好ましくは0.5~3.0、より好ましくは1.0~3.0、さらに好ましくは1.3~3.0、特に好ましくは1.5~2.8である。
緩衝層形成用組成物には、本発明の効果を損なわない範囲において、上記の成分(a1)~(a4)以外のその他の重合性化合物(a5)を含有してもよい。
成分(a5)としては、例えば、炭素数1~20のアルキル基を有するアルキル(メタ)アクリレート;スチレン、ヒドロキシエチルビニルエーテル、ヒドロキシブチルビニルエーテル、N-ビニルホルムアミド、N-ビニルピロリドン、N-ビニルカプロラクタム等のビニル化合物:等が挙げられる。なお、成分(a5)は、単独で又は2種以上を組み合わせて用いてもよい。
緩衝層形成用組成物には、緩衝層を形成する際、光照射による重合時間を短縮させ、また、光照射量を低減させる観点から、さらに光重合開始剤を含有することが好ましい。
光重合開始剤としては、例えば、ベンゾイン化合物、アセトフェノン化合物、アシルフォスフィノキサイド化合物、チタノセン化合物、チオキサントン化合物、パーオキサイド化合物、さらには、アミンやキノン等の光増感剤等が挙げられ、より具体的には、例えば、1-ヒドロキシシクロヘキシルフェニルケトン、2-ヒドロキシ-2-メチル-1-フェニル-プロパン-1-オン、ベンゾイン、ベンゾインメチルエーテル、ベンゾインエチルエーテル、ベンゾインイソプロピルエーテル、ベンジルフェニルサルファイド、テトラメチルチウラムモノサルファイド、アゾビスイソブチロルニトリル、ジベンジル、ジアセチル、8-クロールアンスラキノン、ビス(2,4,6-トリメチルベンゾイル)フェニルフォスフィンオキシド等が挙げられる。
これらの光重合開始剤は、単独で又は2種以上を組み合わせて用いることができる。
緩衝層形成用組成物中の光重合開始剤の含有量は、エネルギー線重合性化合物の合計量100質量部に対して、好ましくは0.05~15質量部、より好ましくは0.1~10質量部、さらに好ましくは0.3~5質量部である。
緩衝層形成用組成物には、本発明の効果を損なわない範囲において、その他の添加剤を含有してもよい。その他の添加剤としては、例えば、帯電防止剤、酸化防止剤、軟化剤(可塑剤)、充填剤、防錆剤、顔料、染料等が挙げられる。これらの添加剤を配合する場合、緩衝層形成用組成物中の各添加剤の含有量は、エネルギー線重合性化合物の合計量100質量部に対して、好ましくは0.01~6質量部、より好ましくは0.1~3質量部である。
緩衝層形成用組成物には、本発明の効果を損なわない範囲において、樹脂成分を含有してもよい。樹脂成分としては、例えば、ポリエン・チオール系樹脂や、ポリブテン、ポリブタジエン、ポリメチルペンテン等のポリオレフィン系樹脂、及びスチレン系共重合体等の熱可塑性樹脂等が挙げられる。
緩衝層形成用組成物中のこれらの樹脂成分の含有量は、好ましくは0~20質量%、より好ましくは0~10質量%、さらに好ましくは0~5質量%、特に好ましくは0~2質量%である。
したがって、当該緩衝層は、成分(a1)由来の重合単位及び成分(a2)由来の重合単位を含む。また、当該緩衝層は、成分(a3)由来の重合単位及び/又は成分(a4)由来の重合単位を含有することが好ましく、成分(a5)由来の重合単位を含有していてもよい。緩衝層における各重合単位の含有割合は、通常、緩衝層形成用組成物を構成する各成分の比率(仕込み比)に一致する。例えば、緩衝層形成用組成物中の成分(a1)の含有量が緩衝層形成用組成物の全量(100質量%)に対して10~70質量%の場合、緩衝層は成分(a1)に由来する重合単位を10~70質量%含有する。また、緩衝層形成用組成物中の成分(a2)の含有量が緩衝層形成用組成物の全量(100質量%)に対して2~40質量%の場合、緩衝層は成分(a2)に由来する重合単位を2~40質量%含有する。成分(a3)~(a5)についても同様である。
緩衝層を、ポリオレフィン樹脂フィルムを含む層により形成することで、緩衝層の引張貯蔵弾性率(E23、E60、E90)、及びtanδの最大値を上記した範囲内としやすくなる。
これらのポリオレフィン樹脂は、単独で又は2種以上を組み合わせて用いることができる。
粘着剤層は、常温において適度な感圧接着性を有する限り特に限定はされないが、23℃におけるせん断貯蔵弾性率が0.05~0.50MPaであるものが好ましい。半導体ウエハの表面には、回路等が形成され通常凹凸がある。粘着剤層のせん断貯蔵弾性率が上記範囲内となることで、凹凸があるウエハ表面に粘着テープを貼付する際、ウエハ表面の凹凸と粘着剤層とを十分に接触させ、かつ粘着剤層の接着性を適切に発揮させることが可能になる。そのため、粘着テープの半導体ウエハへの固定を確実に行い、かつ裏面研削時にウエハ表面を適切に保護することが可能になる。これらの観点から、粘着剤層のせん断貯蔵弾性率は、0.12~0.35MPaであることがより好ましい。なお、粘着剤層のせん断貯蔵弾性率とは、粘着剤層がエネルギー線硬化性粘着剤から形成される場合には、エネルギー線照射による硬化前のせん断貯蔵弾性率を意味する。
また、粘着剤層は、エネルギー線硬化性粘着剤から形成されることが好ましい。粘着剤層は、エネルギー線硬化性粘着剤から形成されることで、エネルギー線照射による硬化前には、23℃におけるせん断貯蔵弾性率を上記範囲に設定しつつ、硬化後においては剥離力を1000mN/50mm以下に容易に設定することが可能になる。
エネルギー線硬化性粘着剤としては、例えば、非エネルギー線硬化性の粘着性樹脂(「粘着性樹脂I」ともいう)に加え、粘着性樹脂以外のエネルギー線硬化性化合物を含むエネルギー線硬化性粘着剤組成物(以下、「X型の粘着剤組成物」ともいう)が使用可能である。また、エネルギー線硬化性粘着剤として、非エネルギー線硬化性の粘着性樹脂の側鎖に不飽和基を導入したエネルギー線硬化性の粘着性樹脂(以下、「粘着性樹脂II」ともいう)を主成分として含み、粘着性樹脂以外のエネルギー線硬化性化合物を含まない粘着剤組成物(以下、「Y型の粘着剤組成物」ともいう)も使用してもよい。
これらの中では、XY型の粘着剤組成物を使用することが好ましい。XY型のものを使用することで、硬化前においては十分な粘着特性を有する一方で、硬化後においては、半導体ウエハに対する剥離力を十分に低くすることが可能である。
以下、粘着性樹脂として、アクリル系樹脂が使用されるアクリル系粘着剤についてより詳述に説明する。
また、アクリル系重合体(b)は、上記以外にも、スチレン、α-メチルスチレン、ビニルトルエン、蟻酸ビニル、酢酸ビニル、アクリロニトリル、アクリルアミド等の上記のアクリル系モノマーと共重合可能なモノマー由来の構成単位を含んでもよい。
また、不飽和基含有化合物が有する、官能基と結合可能な置換基としては、イソシアネート基やグリシジル基等が挙げられる。したがって、不飽和基含有化合物としては、例えば、(メタ)アクリロイルオキシエチルイソシアネート、(メタ)アクリロイルイソシアネート、グリシジル(メタ)アクリレート等が挙げられる。
なお、アクリル系樹脂の重量平均分子量(Mw)は、好ましくは30万~160万、より好ましくは40万~140万、さらに好ましくは50万~120万である。
X型又はXY型の粘着剤組成物に含有されるエネルギー線硬化性化合物としては、分子内に不飽和基を有し、エネルギー線照射により重合硬化可能なモノマー又はオリゴマーが好ましい。
このようなエネルギー線硬化性化合物としては、例えば、トリメチロールプロパントリ(メタ)アクリレート、ペンタエリスリトール(メタ)アクリレート、ペンタエリスリトールテトラ(メタ)アクリレート、ジペンタエリスリトールヘキサ(メタ)アクリレート、1,4-ブチレングリコールジ(メタ)アクリレート、1,6-へキサンジオール(メタ)アクリレート等の多価(メタ)アクリレートモノマー、ウレタン(メタ)アクリレート、ポリエステル(メタ)アクリレート,ポリエーテル(メタ)アクリレート、エポキシ(メタ)アクリレート等のオリゴマーが挙げられる。
エネルギー線硬化性化合物の分子量(オリゴマーの場合は重量平均分子量)は、好ましくは100~12000、より好ましくは200~10000、さらに好ましくは400~8000、特に好ましくは600~6000である。
一方で、XY型の粘着剤組成物におけるエネルギー線硬化性化合物の含有量は、粘着性樹脂100質量部に対して、好ましくは1~30質量部、より好ましくは2~20質量部、さらに好ましくは3~15質量部である。XY型の粘着剤組成物では、粘着性樹脂が、エネルギー線硬化性であるため、エネルギー線硬化性化合物の含有量が少なくても、エネルギー線照射後、十分に剥離力を低下させることが可能である。
粘着剤組成物は、さらに架橋剤を含有することが好ましい。架橋剤は、例えば粘着性樹脂が有する官能基モノマー由来の官能基に反応して、粘着性樹脂同士を架橋するものである。架橋剤としては、例えば、トリレンジイソシアネート、ヘキサメチレンジイソシアネート等、及びそれらのアダクト体等のイソシアネート系架橋剤;エチレングリコールグリシジルエーテル等のエポキシ系架橋剤;ヘキサ〔1-(2-メチル)-アジリジニル〕トリフオスファトリアジン等のアジリジン系架橋剤;アルミニウムキレート等のキレート系架橋剤;等が挙げられる。これらの架橋剤は、単独で又は2種以上を組み合わせて用いてもよい。
架橋剤の配合量は、架橋反応を促進させる観点から、粘着性樹脂100質量部に対して、好ましくは0.01~10質量部、より好ましくは0.03~7質量部、さらに好ましくは0.05~4質量部である。
また、粘着剤組成物がエネルギー線硬化性である場合には、粘着剤組成物は、さらに光重合開始剤を含有することが好ましい。光重合開始剤を含有することで、紫外線等の比較的低エネルギーのエネルギー線でも、粘着剤組成物の硬化反応を十分に進行させることができる。
光重合開始剤の配合量は、粘着性樹脂100質量部に対して、好ましくは0.01~10質量部、より好ましくは0.03~5質量部、さらに好ましくは0.05~5質量部である。
粘着性組成物は、本発明の効果を損なわない範囲において、その他の添加剤を含有してもよい。その他の添加剤としては、例えば、帯電防止剤、酸化防止剤、軟化剤(可塑剤)、充填剤、防錆剤、顔料、染料等が挙げられる。これらの添加剤を配合する場合、添加剤の配合量は、粘着性樹脂100質量部に対して、好ましくは0.01~6質量部である。
有機溶媒としては、例えば、メチルエチルケトン、アセトン、酢酸エチル、テトラヒドロフラン、ジオキサン、シクロヘキサン、n-ヘキサン、トルエン、キシレン、n-プロパノール、イソプロパノール等が挙げられる。
なお、これらの有機溶媒は、粘着性樹脂の合成時に使用された有機溶媒をそのまま用いてもよいし、該粘着剤組成物の溶液を均一に塗布できるように、合成時に使用された有機溶媒以外の1種以上の有機溶媒を加えてもよい。
粘着テープの表面には、剥離シートが貼付されていてもよい。剥離シートは、具体的には、粘着テープの粘着剤層の表面に貼付される。剥離シートは、粘着剤層表面に貼付されることで輸送時、保管時に粘着剤層を保護する。剥離シートは、剥離可能に粘着テープに貼付されており、粘着テープが使用される前(すなわち、ウエハ貼付前)には、粘着テープから剥離されて取り除かれる。
剥離シートは、少なくとも一方の面が剥離処理をされた剥離シートが用いられ、具体的には、剥離シート用基材の表面上に剥離剤を塗布したもの等が挙げられる。
剥離シートの厚さは、特に制限ないが、好ましくは10~200μm、より好ましくは20~150μmである。
本発明の粘着テープの製造方法としては、特に制限はなく、公知の方法により製造することができる。
例えば、基材と、当該基材の一方の面側に設けられた緩衝層と、当該基材の他方の面側に設けられた粘着剤層とを有する粘着テープの製造方法は以下のとおりである。
本発明に係る粘着テープは、DBGにおいて、半導体ウエハの表面に貼付してウエハの裏面研削が行われる際に好ましく使用される。特に、本発明に係る粘着テープは、半導体ウエハを個片化した際に、カーフ幅の小さいチップ群が得られるLDBGに好ましく使用される。なお、「チップ群」とは、本発明に係る粘着テープ上に保持された、ウエハ形状の複数の半導体チップをいう。
粘着テープの非限定的な使用例として、以下に半導体装置の製造方法をさらに具体的に説明する。
工程1:上記の粘着テープを、半導体ウエハの表面に貼付する工程
工程2:半導体ウエハの表面側から溝を形成し、又は半導体ウエハの表面若しくは裏面から半導体ウエハ内部に改質領域を形成する工程
工程3:粘着テープが表面に貼付され、かつ上記溝又は改質領域が形成された半導体ウエハを、裏面側から研削して、溝又は改質領域を起点として、複数のチップに個片化させる工程
工程4:個片化された半導体ウエハ(すなわち、複数の半導体チップ)から、粘着テープを剥離する工程
(工程1)
工程1では、半導体ウエハ表面に、本発明の粘着テープを粘着剤層を介して貼付する。本工程は、後述する工程2の前に行われてもよいが、工程2の後に行ってもよい。例えば、半導体ウエハに改質領域を形成する場合には、工程1を工程2の前に行うことが好ましい。一方で、半導体ウエハ表面に、ダイシング等により溝を形成する場合には、工程2の後に工程1を行う。すなわち、後述する工程2で形成した溝を有するウエハの表面に、本工程1にて粘着テープを貼付することになる。
工程2では、半導体ウエハの表面側から溝を形成し、又は半導体ウエハの表面又は裏面から半導体ウエハの内部に改質領域を形成する。
本工程で形成される溝は、半導体ウエハの厚さより浅い深さの溝である。溝の形成は、従来公知のウエハダイシング装置等を用いてダイシングにより行うことが可能である。また、半導体ウエハは、後述する工程3において、溝に沿って複数の半導体チップに分割される。
粘着テープが貼付され、かつ溝又は改質領域を形成した半導体ウエハは、チャックテーブル上に載せられ、チャックテーブルに吸着されて保持される。この際、半導体ウエハは、表面側がテーブル側に配置されて吸着される。
工程1及び工程2の後、チャックテーブル上の半導体ウエハの裏面を研削して、半導体ウエハを複数の半導体チップに個片化する。
ここで、裏面研削は、半導体ウエハに溝が形成される場合には、少なくとも溝の底部に至る位置まで半導体ウエハを薄くするように行う。この裏面研削により、溝は、ウエハを貫通する切り込みとなり、半導体ウエハは切り込みにより分割されて、個々の半導体チップに個片化される。
次に、個片化された半導体ウエハ(すなわち、複数の半導体チップ)から、半導体加工用粘着テープを剥離する。本工程は、例えば、以下の方法により行う。
まず、粘着テープの粘着剤層が、エネルギー線硬化性粘着剤から形成される場合には、エネルギー線を照射して粘着剤層を硬化する。次いで、個片化された半導体ウエハの裏面側に、ピックアップテープを貼付し、ピックアップが可能なように位置及び方向合わせを行う。この際、ウエハの外周側に配置したリングフレームもピックアープテープに貼り合わせ、ピックアップテープの外周縁部をリングフレームに固定する。ピックアップテープには、ウエハとリングフレームを同時に貼り合わせてもよいし、別々のタイミングで貼り合わせてもよい。次いで、ピックアップテープ上に保持された複数の半導体チップから粘着テープを剥離する。
なお、ピックアップテープは、特に限定されないが、例えば、基材と、基材の一方の面に設けられた粘着剤層を備える粘着シートによって構成される。
本発明に係る第2実施形態では、粘着テープとは、基材と、基材の少なくとも一方の面側に設けられた粘着剤層とを含む積層体を意味する。なお、これら以外の他の構成層を含むことを妨げない。例えば、基材の少なくとも一方の面側に設けられた粘着剤層と、基材の他方の面側に設けられた緩衝層とを含んでもよい。また、粘着剤層側の基材表面にはプライマー層が形成されていてもよく、粘着剤層の表面には、使用時まで粘着剤層を保護するための剥離シートが積層されていてもよい。また、基材は単層であってもよく、多層であってもよい。粘着剤層も同様である。
以下に、第2実施形態に係る半導体加工用粘着テープの各部材の構成をさらに詳細に説明する。
〔1〕23℃におけるヤング率が1000MPa以上の基材と、粘着剤層とを有する粘着テープであって、
前記粘着剤層の厚みを(N)[μm]、クリープ量を(C)[μm]としたときの、(N)と(C)との積(N)×(C)が、30℃において500以上、かつ、60℃において9000以下である、半導体加工用粘着テープ。
前記半導体ウエハの表面側から溝を形成し、又は前記半導体ウエハの表面若しくは裏面から半導体ウエハ内部に改質領域を形成する工程と、
前記粘着テープが表面に貼付され、かつ前記溝又は前記改質領域が形成された半導体ウエハを、裏面側から研削して、前記溝又は前記改質領域を起点として複数のチップに個片化させる工程と、
前記複数のチップから前記粘着テープを剥離する工程と、
を備える半導体装置の製造方法。
粘着剤層は単層であってもよく、多層であってもよい。第2実施形態では、粘着剤層とは、粘着シートを半導体ウエハに貼り付けたとき、基材とウエハとの間に介在する層をいう。基材とウエハとの間に複数の層が存在する場合には、それら複数の層を1つの粘着剤層とみなす。したがって、以下に詳述する粘着剤層のクリープ量、厚さ、せん断貯蔵弾性率といった特性は、基材とウエハとの間に単一の粘着剤層が存在する場合には、そのものの特性であり、基材とウエハとの間に複数の層が存在する場合には、それら複数の層を1つの粘着剤層とみなしたときの特性である。すなわち、各特性における数値範囲は、基材とウエハとの間に単一の粘着剤層が存在する場合には、その単一の粘着剤層により満足されるべきであり、基材とウエハとの間に複数の層が存在する場合には、それら複数の層を1つの粘着剤層として満足すべきである。なお、基材が複数の層からなる場合には、それら複数の層での23℃におけるヤング率が1000MPa以上であれば1つの基材とみなす。例えば、易接着層を設けた基材の23℃におけるヤング率が1000MPa以上の場合、基材および易接着層を1つの基材とみなし、易接着層は粘着剤層に含めない。
また、粘着剤層は、エネルギー線硬化性粘着剤から形成されることが好ましい。粘着剤層は、エネルギー線硬化性粘着剤から形成されることで、エネルギー線照射による硬化前には、30℃におけるせん断貯蔵弾性率を上記範囲に設定しつつ、硬化後においては剥離力を1000mN/50mm以下に容易に設定することが可能になる。
これらの中では、XY型の粘着剤組成物を使用することが好ましい。XY型のものを使用することで、硬化前においては十分な粘着特性を有する一方で、硬化後においては、半導体ウエハに対する剥離力を十分に低くすることが可能である。
以下、粘着性樹脂として、アクリル系樹脂が使用されるアクリル系粘着剤についてより詳述に説明する。
また、アクリル系重合体(b)は、上記以外にも、スチレン、α-メチルスチレン、ビニルトルエン、蟻酸ビニル、酢酸ビニル、アクリロニトリル、アクリルアミド等の上記のアクリル系モノマーと共重合可能なモノマー由来の構成単位を含んでもよい。
また、不飽和基含有化合物が有する、官能基と結合可能な置換基としては、イソシアネート基やグリシジル基等が挙げられる。したがって、不飽和基含有化合物としては、例えば、(メタ)アクリロイルオキシエチルイソシアネート、(メタ)アクリロイルイソシアネート、グリシジル(メタ)アクリレート等が挙げられる。
なお、アクリル系樹脂の重量平均分子量(Mw)は、好ましくは30万~160万、より好ましくは40万~140万、さらに好ましくは50万~120万である。
粘着テープの製造方法については、緩衝層を設けても設けなくてもよいとする他は、第1実施形態と同様とすることができる。
実施例1~6および比較例1における測定方法、評価方法は以下のとおりである。
[ヤング率]
基材のヤング率は、引張試験機を用いて引張試験を行い、得られた引張強度と伸びのチャートから算出した。具体的には、基材を構成するフィルムまたはシートと同一の材質からなる幅15mm×長さ150mm×厚み50μmの測定用フィルムを準備した。測定用フィルムの延伸可能部が100mmになるように引張・圧縮試験機(エー・アンド・デイ社製、製品名「テンシロン」)に設置した。そして、23℃、試験スピード200mm/分で測定を行い、得られたチャートの原点における傾きからヤング率を算出した。
実施例1~4及び比較例1で用いた緩衝層形成用組成物からなる、厚さ0.2mmの緩衝層形成膜を第1の剥離シート上に形成し、さらに、当該緩衝層形成膜上に、第2の剥離シートを貼り合わせた。なお、第1、第2の剥離シートは、シリコーン剥離処理を行ったポリエチレンテレフタレートフィルム(リンテック社製、商品名「SP-PET381031」、厚さ:38μm)を使用した。
そして、第1の剥離シート側から再度紫外線を照射して、上記緩衝層形成膜を完全に硬化させ、厚さ0.2mmの試験用緩衝層を形成した。なお、上記の紫外線照射は、ベルトコンベア式紫外線照射装置(アイグラフィックス社製、装置名「ECS-401GX」)及び高圧水銀ランプ(アイグラフィックス社製、装置名「H04-L41」)を使用し、ランプ高さ150mm、ランプ出力3kW(換算出力120mW/cm)、光線波長365nmの照度160mW/cm2、照射量500mJ/cm2の照射条件にて行った。
作製した試験用緩衝層上の両面の剥離シートを除去した後、幅4mm×長さ50mmに切断した試験片を用いて、自動動的粘弾性試験機(オリエンテック社製、製品名「Rheovibron DDV-0.1FP」)により、測定周波数1Hz、昇温速度3℃/分で、温度範囲-5~120℃における、引張貯蔵弾性率及び引張損失弾性率を10個の試験片について測定した。なお、実施例5,6に関しては、実施例5,6で用いた緩衝層(厚み27.5μmのLDPE)を積層し、厚さ0.1mmの試験用緩衝層を用いたこと以外は上記と同様の測定を行った。
また、23℃における引張貯蔵弾性率の平均値をE23、60℃における引張貯蔵弾性率の平均値をE60、90℃における引張貯蔵弾性率の平均値をE90とした。
直径12インチ、厚み775μmのシリコンウエハに、実施例および比較例で製造した半導体加工用粘着テープを、バックグラインド用テープラミネーター(リンテック社製、装置名「RAD-3510F/12」)を用いて貼付した。レーザーソー(ディスコ社製、装置名「DFL7361」)を用い、ウエハに格子状の改質領域を形成した。なお、格子サイズは11mm×8mmとした。
大クラック:クラックのサイズが50μm超
中クラック:クラックのサイズが20μm以上50μm以下
小クラック:クラックのサイズが20μm未満
クラック発生率(%)=クラックが発生したチップ数/全チップ数×100
(1)基材
基材として、両面易接着層付PETフィルム(東洋紡社製 コスモシャイン A4300、厚み:50μm、23℃におけるヤング率:2550MPa)を準備した。
(ウレタンアクリレート系オリゴマーの合成)
ポリカーボネートジオールと、イソホロンジイソシアネートとを反応させて得られた末端イソシアネートウレタンプレポリマーに、2-ヒドロキシエチルアクリレートを反応させて、重量平均分子量(Mw)が約5000のウレタンアクリレート系オリゴマー(UA-1)を得た。
上記で合成したウレタンアクリレート系オリゴマー(UA-1)50質量部、イソボルニルアクリレート(IBXA)30質量部、テトラヒドロフルフリルアクリレート(THFA)40質量部、及び、ジペンタエリスリトールヘキサアクリレート(DPHA)15質量部を配合し、さらに光重合開始剤としての2-ヒドロキシ-2-メチル-1-フェニル-プロパン-1-オン(BASFジャパン社製、製品名「イルガキュア1173」)1.0質量部を配合し、緩衝層形成用組成物を調製した。
(粘着剤組成物の調製)
n-ブチルアクリレート(BA)52質量部、メチルメタクリレート(MMA)20質量部、及び2-ヒドロキシエチルアクリレート(2HEA)28質量部を共重合して得たアクリル系重合体(b)に、アクリル系重合体(b)の全水酸基のうち90モル%の水酸基に付加するように、2-メタクリロイルオキシエチルイソシアネート(MOI)を反応させて、エネルギー線硬化性のアクリル系樹脂(Mw:50万)を得た。
剥離シート(リンテック社製、商品名「SP-PET381031」)の剥離処理面に、上記で得た粘着剤組成物の塗工液を塗工し、加熱乾燥させて、剥離シート上に厚さが30μmの粘着剤層を形成した。
なお、上記の紫外線照射は、ベルトコンベア式紫外線照射装置(アイグラフィックス社製、装置名「US2-0801」) 及び高圧水銀ランプ(アイグラフィックス社製、装置名「H08-L41」) を使用し、ランプ高さ230mm、出力80mW/cm、光線波長365nmの照度90mW/cm2、照射量50mJ/cm2の照射条件下にて行った。
緩衝層形成用組成物の調製において、DPHAの配合量を20質量部に変更した他は、実施例1と同様にして粘着テープを得た。
緩衝層形成用組成物の調製において、DPHAに代えて、ペンタエリスリトールトリアクリレート(PETA、トリエステル57%、新中村化学工業社製、製品名「A-TMM-3LM-N」)20質量部を用いた他は、実施例1と同様にして粘着テープを得た。
緩衝層形成用組成物として、以下の緩衝層形成用組成物を用いた他は、実施例1と同様にして粘着テープを得た。
(ウレタンアクリレート系オリゴマーの合成)
ポリエステルジオールと、イソホロンジイソシアネートとを反応させて得られた末端イソシアネートウレタンプレポリマーに、2-ヒドロキシエチルアクリレートを反応させて、重量平均分子量(Mw)が約5000のウレタンアクリレート系オリゴマー(UA-2)を得た。
ウレタンアクリレート系オリゴマー(UA-2)50質量部、イソボルニルアクリレート(IBXA)40質量部、2-ヒドロキシ-3-フェノキシプロピルアクリレート(HPPA)20質量部、及び、ペンタエリスリトールトリアクリレート(PETA)10質量部を配合し、さらに光重合開始剤としての2-ヒドロキシ-2-メチル-1-フェニル-プロパン-1-オン(BASFジャパン社製、製品名「イルガキュア1173」)1.0質量部を配合し、緩衝層形成用組成物を調製した。
[実施例5]
緩衝層として低密度ポリエチレンフィルム(厚み:27.5μm)を準備した。
実施例1と同様の基材を用い、当該基材の両面に当該緩衝層をドライラミネート法により積層し、LDPE/PET/LDPEの順に積層された基材と緩衝層との積層体を得た。
[実施例6]
粘着剤層の厚みを60μmとした他は、実施例5と同様にして粘着テープを得た。
緩衝層形成用組成物として、以下の緩衝層形成用組成物を用いた他は、実施例1と同様にして粘着テープを得た。
(緩衝層形成用組成物の調製)
ウレタンアクリレート系オリゴマー(UA-2)50質量部、イソボルニルアクリレート(IBXA)40質量部、及び、2-ヒドロキシ-3-フェノキシプロピルアクリレート(HPPA)20質量部を配合し、さらに光重合開始剤としての2-ヒドロキシ-2-メチル-1-フェニル-プロパン-1-オン(BASFジャパン社製、製品名「イルガキュア1173」)1.0質量部を配合し、緩衝層形成用組成物を調製した。
実施例7~17および比較例2~6における測定方法、評価方法は以下のとおりである。
[せん断貯蔵弾性率G’]
緩衝層のせん断貯蔵弾性率G’は、粘弾性測定装置(Rheometorics社製 DYNAMIC ANALYZER RDA■)を用いて、実施例7~17及び比較例2~6で用いた粘着剤組成物の溶液から形成された単層の粘着剤を積層させたサンプルを下記の条件下で測定した。
・サンプルサイズ:直径8mm×厚さ3mm
・測定温度:30℃及び60℃
・測定周波数:1Hz
JISZ0237(2009)に準拠して、幅25mm×長さ150mmに切り出した粘着テープを保持力試験用の被着体(SUS304)の標線に併せて、貼付面積が幅25mm×長さ25mmとなるように貼付(2kgロール、5往復)して試験サンプルとし、その後、保持力試験機を用い、30℃及び60℃環境下、1kgの錘で荷重(9.8N)をかけて保持力を測定した。なお、試験時間は10000秒とし、その際のズレ量をクリープ量(C)[μm]とした。
基材(基材を構成する樹脂フィルム)の厚みは、JISK7130に準じて、定圧厚さ測定器(テクロック社製、製品名「PG-02」)を用いて測定した。粘着剤層の厚み(N)は、シリコーン剥離処理を行ったPETフィルムが付いた状態の表面保護シートの厚みを測定し、その厚みから基材及びシリコーン剥離処理を行ったPETフィルムの厚みを減じた値[μm]である。
粘着剤層の厚み(N)と上記クリープ試験により得られた粘着剤層のクリープ量(C)との積(N)×(C)を算出した。
直径12インチ、厚み775μmのシリコンウエハに実施例および比較例で製造した半導体加工用粘着シートをリンテック製 RAD-3510F/12にて貼付し、ディスコ社製 DFL7361を用い、チップサイズ11mm×8mmにステルスダイシングした。次いで、ディスコ社製DGP8761を用いて、厚さ20μmになるまで研削(ドライポリッシュ)を行った。次いで、リンテック社製RAD-2700F/12を用い、エネルギー線(紫外線)照射を行い、半導体加工用粘着シートの貼付面の反対面にダイシングテープ(Adwill D-821HS、リンテック社製)を貼付後、半導体加工用粘着シートを剥離した。その後、分割されたチップをデジタル顕微鏡(キーエンス社製 VHX-1000)で観察し、下記のとおりダイシフトの大きさおよびクラック発生率を評価した。
図1に示すように、デジタル顕微鏡にて、半導体ウエハ10の外周部4点(A~D)および中心部1点(E)を観察した。点Aにおいて、隣り合う4つのチップ11のカーフ幅L1~L4を測定し、その平均値Aave[(L1+L2+L3+L4)/4]を算出した。同様に、B、C、D、Eの各点におけるカーフ幅L1~L4の平均値Bave、Cave、Dave、Eaveをそれぞれ算出した。外周部のAave、Bave、Cave、Daveの平均値[(Aave+Bave+Cave+Dave)/4]をα、中心部のEaveをβとしたときの、α/βの値に基づき、下記の基準でダイシフトの大きさを評価した。
○:α/β≦3.0
△:3.0<α/β≦5.0
×:5.0<α/β
個片化されたチップをデジタル顕微鏡で観察し、クラックの発生したチップを数え、下式によりクラック発生率を算出し、下記の基準で評価した。
クラック発生率(%)=クラックが発生したチップ数/全チップ数×100
○:クラック発生率≦2.0%
△:2.0%<クラック発生率≦3.0%
×:3.0%<クラック発生率
(1)基材
基材として、両面易接着層付PETフィルム(東洋紡社製 コスモシャイン A4300、厚み:50μm、23℃におけるヤング率:2550MPa、破断強度:55.3MJ/m3)を準備した。
緩衝層として低密度ポリエチレンフィルム(厚み:27.5μm)を準備した。
基材の両面に当該緩衝層をドライラミネート法により積層し、LDPE/PET/LDPEの順に積層された基材と緩衝層との積層体(A1)を得た。
(粘着剤組成物B1の調製)
n-ブチルアクリレート(BA)40質量部、メチルメタクリレート(MMA)30質量部、及び2-ヒドロキシエチルアクリレート(2HEA)28質量部を共重合して得たアクリル系重合体(b1)に、アクリル系重合体(b1)の全水酸基のうち90モル%の水酸基に付加するように、2-メタクリロイルオキシエチルイソシアネート(MOI)を反応させて、エネルギー線硬化性のアクリル系樹脂(Mw:50万)を得た。
剥離シート(リンテック社製、商品名「SP-PET381031」)の剥離処理面に、上記で得た粘着剤組成物の塗工液を塗工し、加熱乾燥させて、剥離シート上に厚さが40μmの粘着剤層を形成した。
その後、積層体(A1)と粘着剤層を貼り合わせ、半導体加工用粘着テープを作製した。
粘着剤層の厚みを20μmに変更した他は、実施例7と同様にして半導体加工用粘着テープを得た。
粘着剤層の厚みを60μmに変更した他は、実施例7と同様にして半導体加工用粘着テープを得た。
粘着剤組成物を下記B2に変更し、粘着剤層の厚みを30μmに変更した他は、実施例7と同様にして半導体加工用粘着テープを得た。
n-ブチルアクリレート(BA)73質量部、ジメチルメタクリレート(DMMA)10質量部、及び2-ヒドロキシエチルアクリレート(2HEA)17質量部を共重合して得たアクリル系重合体(b2)に、アクリル系重合体(b2)の全水酸基のうち83モル%の水酸基に付加するように、2-メタクリロイルオキシエチルイソシアネート(MOI)を反応させて、エネルギー線硬化性のアクリル系樹脂(Mw:50万)を得た。
粘着剤層の厚みを40μmに変更した他は、実施例10と同様にして半導体加工用粘着テープを得た。
粘着剤組成物を下記B3に変更し、粘着剤層の厚みを30μmに変更した他は、実施例7と同様にして半導体加工用粘着テープを得た。
n-ブチルアクリレート(BA)73質量部、メチルメタクリレート(MMA)8質量部、アクリル酸(AA)3重量部、及び2-ヒドロキシエチルアクリレート(2HEA)5質量部を共重合しアクリル系樹脂(Mw:50万)を得た。
粘着剤組成物を下記B4に変更した他は、実施例7と同様にして半導体加工用粘着テープを得た。
n-ブチルアクリレート(BA)32質量部、メチルメタクリレート(MMA)40質量部、及び2-ヒドロキシエチルアクリレート(2HEA)28質量部を共重合して得たアクリル系重合体(b1)に、アクリル系重合体(b1)の全水酸基のうち90モル%の水酸基に付加するように、2-メタクリロイルオキシエチルイソシアネート(MOI)を反応させて、エネルギー線硬化性のアクリル系樹脂(Mw:50万)を得た。
積層体を下記A2に変更した他は、実施例7と同様にして半導体加工用粘着テープを得た。
基材として、両面易接着層付PETフィルム(東洋紡社製 コスモシャイン A4300、厚み:50μm、23℃におけるヤング率:2550MPa、破断強度:55.3MJ/m3)を準備した。
(2)緩衝層
(ウレタンアクリレート系オリゴマーの合成)
ポリカーボネートジオールと、イソホロンジイソシアネートとを反応させて得られた末端イソシアネートウレタンプレポリマーに、2-ヒドロキシエチルアクリレートを反応させて、重量平均分子量(Mw)が約5000のウレタンアクリレート系オリゴマー(UA-1)を得た。
上記で合成したウレタンアクリレート系オリゴマー(UA-1)50質量部、イソボルニルアクリレート(IBXA)30質量部、テトラヒドロフルフリルアクリレート(THFA)40質量部、及び、ジペンタエリスリトールヘキサアクリレート(DPHA)15質量部を配合し、さらに光重合開始剤としての2-ヒドロキシ-2-メチル-1-フェニル-プロパン-1-オン(BASFジャパン社製、製品名「イルガキュア1173」)1.0質量部を配合し、緩衝層形成用組成物(a2)を調製した。
粘着剤組成物をB2に変更した他は、実施例14と同様にして半導体加工用粘着テープを得た。
粘着剤組成物を下記B5に変更し、粘着剤層の厚みを30μmに変更した他は、実施例14と同様にして半導体加工用粘着テープを得た。
n-ブチルアクリレート(BA)52質量部、メチルメタクリレート(MMA)20質量部、及び2-ヒドロキシエチルアクリレート(2HEA)28質量部を共重合して得たアクリル系重合体(b)に、アクリル系重合体(b)の全水酸基のうち90モル%の水酸基に付加するように、2-メタクリロイルオキシエチルイソシアネート(MOI)を反応させて、エネルギー線硬化性のアクリル系樹脂(Mw:50万)を得た。
粘着剤組成物を下記B6に変更した他は、実施例7と同様にして半導体加工用粘着テープを得た。
n-ブチルアクリレート(BA)74質量部、メチルメタクリレート(MMA)20質量部、及び2-ヒドロキシエチルアクリレート(2HEA)6質量部を共重合して得たアクリル系重合体(b1)に、アクリル系重合体(b1)の全水酸基のうち50モル%の水酸基に付加するように、2-メタクリロイルオキシエチルイソシアネート(MOI)を反応させて、エネルギー線硬化性のアクリル系樹脂(Mw:50万)を得た。
粘着剤層の厚みを80μmに変更した他は、実施例7と同様にして半導体加工用粘着テープを得た。
粘着剤層の厚みを60μmに変更した他は、実施例10と同様にして半導体加工用粘着テープを得た。
粘着剤層の厚みを45μmに変更した他は、実施例12と同様にして半導体加工用粘着テープを得た。
粘着剤層の厚みを60μmに変更した他は、実施例12と同様にして半導体加工用粘着テープを得た。
粘着剤層の厚みを80μmに変更した他は、実施例14と同様にして半導体加工用粘着テープを得た。
11 チップ
Claims (4)
- 23℃におけるヤング率が1000MPa以上の基材と、基材の少なくとも一方の面側に設けられた粘着剤層とを有する粘着テープであって、
前記粘着剤層の厚みを(N)[μm]、クリープ量を(C)[μm]としたときの、(N)と(C)との積(N)×(C)が、30℃において500以上、かつ、60℃において9000以下である、半導体加工用粘着テープ。 - 前記粘着剤層の30℃におけるせん断貯蔵弾性率が0.03MPa以上であり、60℃におけるせん断貯蔵弾性率が0.20MPa以下である、請求項1に記載の半導体加工用粘着テープ。
- 前記粘着剤層の厚さが100μm以下である、請求項1または2に記載の半導体加工用粘着テープ。
- 請求項1~3のいずれかに記載の半導体加工用粘着テープを、半導体ウエハの表面に貼付する工程と、
前記半導体ウエハの表面側から溝を形成し、又は前記半導体ウエハの表面若しくは裏面から半導体ウエハ内部に改質領域を形成する工程と、
前記粘着テープが表面に貼付され、かつ前記溝又は前記改質領域が形成された半導体ウエハを、裏面側から研削して、前記溝又は前記改質領域を起点として複数のチップに個片化させる工程と、
前記複数のチップから前記粘着テープを剥離する工程と、
を備える半導体装置の製造方法。
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US16/338,524 US10854495B2 (en) | 2016-10-03 | 2017-09-29 | Adhesive tape for semiconductor processing, and semiconductor device manufacturing method |
SG11201902926YA SG11201902926YA (en) | 2016-10-03 | 2017-09-29 | Adhesive tape for semiconductor processing, and semiconductor device manufacturing method |
KR1020197008904A KR102363998B1 (ko) | 2016-10-03 | 2017-09-29 | 반도체 가공용 점착 테이프 및 반도체 장치의 제조 방법 |
JP2018543875A JP6475901B2 (ja) | 2016-10-03 | 2017-09-29 | 半導体加工用粘着テープおよび半導体装置の製造方法 |
CN201780055585.9A CN109743881B (zh) | 2016-10-03 | 2017-09-29 | 半导体加工用粘着胶带以及半导体装置的制造方法 |
TW107103251A TWI744468B (zh) | 2016-08-12 | 2018-01-30 | 半導體加工用黏著帶以及半導體裝置的製造方法 |
US17/083,462 US11322385B2 (en) | 2016-10-03 | 2020-10-29 | Adhesive tape for semiconductor processing, and semiconductor device manufacturing method |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2016-195996 | 2016-10-03 | ||
JP2016195996 | 2016-10-03 |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US16/338,524 A-371-Of-International US10854495B2 (en) | 2016-10-03 | 2017-09-29 | Adhesive tape for semiconductor processing, and semiconductor device manufacturing method |
US17/083,462 Continuation US11322385B2 (en) | 2016-10-03 | 2020-10-29 | Adhesive tape for semiconductor processing, and semiconductor device manufacturing method |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2018066480A1 true WO2018066480A1 (ja) | 2018-04-12 |
Family
ID=61830962
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2017/034691 WO2018066408A1 (ja) | 2016-10-03 | 2017-09-26 | 半導体加工用粘着テープおよび半導体装置の製造方法 |
PCT/JP2017/035599 WO2018066480A1 (ja) | 2016-08-12 | 2017-09-29 | 半導体加工用粘着テープおよび半導体装置の製造方法 |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2017/034691 WO2018066408A1 (ja) | 2016-10-03 | 2017-09-26 | 半導体加工用粘着テープおよび半導体装置の製造方法 |
Country Status (7)
Country | Link |
---|---|
US (3) | US11183416B2 (ja) |
JP (2) | JP6386696B1 (ja) |
KR (2) | KR102441629B1 (ja) |
CN (2) | CN109743877B (ja) |
SG (2) | SG11201902922WA (ja) |
TW (1) | TWI754674B (ja) |
WO (2) | WO2018066408A1 (ja) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6616558B1 (ja) * | 2018-06-26 | 2019-12-04 | リンテック株式会社 | 半導体加工用粘着テープおよび半導体装置の製造方法 |
WO2020003919A1 (ja) * | 2018-06-26 | 2020-01-02 | リンテック株式会社 | 半導体加工用粘着テープおよび半導体装置の製造方法 |
CN113396057A (zh) * | 2019-03-15 | 2021-09-14 | 琳得科株式会社 | 保护膜形成用片及基板装置的制造方法 |
US11183416B2 (en) | 2016-10-03 | 2021-11-23 | Lintec Corporation | Adhesive tape for semiconductor processing, and semiconductor device manufacturing method |
WO2022209118A1 (ja) * | 2021-03-30 | 2022-10-06 | リンテック株式会社 | 半導体加工用粘着テープおよび半導体装置の製造方法 |
US11466178B2 (en) * | 2018-03-23 | 2022-10-11 | Lg Chem, Ltd. | Back-grinding tape |
TWI830764B (zh) * | 2018-08-08 | 2024-02-01 | 日商琳得科股份有限公司 | 端子保護用膠帶以及附電磁波屏蔽膜之半導體裝置的製造方法 |
US11942353B2 (en) | 2018-06-26 | 2024-03-26 | Lintec Corporation | Adhesive tape for semiconductor processing and method for producing semiconductor device |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2018115332A (ja) * | 2018-03-20 | 2018-07-26 | リンテック株式会社 | 粘着テープおよび半導体装置の製造方法 |
CN115053327A (zh) * | 2020-02-05 | 2022-09-13 | 三井化学东赛璐株式会社 | 吸附辅助膜及半导体晶片的吸附方法 |
JP7488678B2 (ja) | 2020-03-30 | 2024-05-22 | リンテック株式会社 | 半導体加工用保護シートおよび半導体装置の製造方法 |
JP2021187985A (ja) * | 2020-06-02 | 2021-12-13 | 日東電工株式会社 | 半導体加工用粘着シート |
JPWO2022097420A1 (ja) * | 2020-11-06 | 2022-05-12 | ||
KR20230098594A (ko) * | 2020-11-09 | 2023-07-04 | 덴카 주식회사 | 점착 테이프 및 가공 방법 |
KR20230155438A (ko) * | 2021-03-05 | 2023-11-10 | 린텍 가부시키가이샤 | 반도체 가공용 점착 시트 및 반도체 장치의 제조 방법 |
KR102660802B1 (ko) * | 2021-08-11 | 2024-04-26 | (주)이녹스첨단소재 | 웨이퍼 처리용 점착 필름 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008214386A (ja) * | 2007-02-28 | 2008-09-18 | Lintec Corp | 粘着シート |
WO2014203792A1 (ja) * | 2013-06-19 | 2014-12-24 | 綜研化学株式会社 | 偏光板用粘着剤組成物、偏光板用粘着シート、粘着剤層付き偏光板、積層体及びフラットパネルディスプレイ |
JP2015183008A (ja) * | 2014-03-20 | 2015-10-22 | リンテック株式会社 | 粘着シート |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI310230B (en) * | 2003-01-22 | 2009-05-21 | Lintec Corp | Adhesive sheet, method for protecting surface of semiconductor wafer and method for processing work |
JP4574234B2 (ja) * | 2004-06-02 | 2010-11-04 | リンテック株式会社 | 半導体加工用粘着シートおよび半導体チップの製造方法 |
US7935424B2 (en) | 2006-04-06 | 2011-05-03 | Lintec Corporation | Adhesive sheet |
JP4717052B2 (ja) * | 2007-11-08 | 2011-07-06 | 日東電工株式会社 | ダイシング・ダイボンドフィルム |
JP2009275060A (ja) * | 2008-05-12 | 2009-11-26 | Nitto Denko Corp | 粘着シート、その粘着シートを使用した被着体の加工方法、及び粘着シート剥離装置 |
JP5419226B2 (ja) * | 2010-07-29 | 2014-02-19 | 日東電工株式会社 | フリップチップ型半導体裏面用フィルム及びその用途 |
JP5762781B2 (ja) | 2011-03-22 | 2015-08-12 | リンテック株式会社 | 基材フィルムおよび該基材フィルムを備えた粘着シート |
JP6068438B2 (ja) * | 2012-03-12 | 2017-01-25 | リンテック株式会社 | バックグラインドシート用基材および粘着シート、当該基材およびシートの製造方法、ならびにワークの製造方法 |
JP5117629B1 (ja) * | 2012-06-28 | 2013-01-16 | 古河電気工業株式会社 | ウェハ加工用粘着テープ |
KR101637862B1 (ko) * | 2013-03-15 | 2016-07-07 | 닛토덴코 가부시키가이샤 | 점착 시트 |
JP6207192B2 (ja) | 2013-03-25 | 2017-10-04 | リンテック株式会社 | 半導体加工用粘着シート |
JP2015082563A (ja) * | 2013-10-22 | 2015-04-27 | 日東電工株式会社 | 半導体装置の製造方法、シート状樹脂組成物及びダイシングテープ一体型シート状樹脂組成物 |
JP6230422B2 (ja) | 2014-01-15 | 2017-11-15 | 株式会社ディスコ | ウエーハの加工方法 |
US10388556B2 (en) | 2014-04-11 | 2019-08-20 | Lintec Corporation | Base for back grind tapes, and back grind tape |
JP6692599B2 (ja) * | 2014-09-19 | 2020-05-13 | 日東電工株式会社 | 粘着剤層付き偏光板 |
KR102324298B1 (ko) | 2016-03-03 | 2021-11-09 | 린텍 가부시키가이샤 | 반도체 가공용 점착 테이프, 및 반도체 장치의 제조 방법 |
US11183416B2 (en) | 2016-10-03 | 2021-11-23 | Lintec Corporation | Adhesive tape for semiconductor processing, and semiconductor device manufacturing method |
-
2017
- 2017-09-26 US US16/338,505 patent/US11183416B2/en active Active
- 2017-09-26 JP JP2018530176A patent/JP6386696B1/ja active Active
- 2017-09-26 WO PCT/JP2017/034691 patent/WO2018066408A1/ja active Application Filing
- 2017-09-26 CN CN201780055647.6A patent/CN109743877B/zh active Active
- 2017-09-26 KR KR1020197008903A patent/KR102441629B1/ko active IP Right Grant
- 2017-09-26 SG SG11201902922WA patent/SG11201902922WA/en unknown
- 2017-09-28 TW TW106133353A patent/TWI754674B/zh active
- 2017-09-29 KR KR1020197008904A patent/KR102363998B1/ko active IP Right Grant
- 2017-09-29 CN CN201780055585.9A patent/CN109743881B/zh active Active
- 2017-09-29 JP JP2018543875A patent/JP6475901B2/ja active Active
- 2017-09-29 SG SG11201902926YA patent/SG11201902926YA/en unknown
- 2017-09-29 US US16/338,524 patent/US10854495B2/en active Active
- 2017-09-29 WO PCT/JP2017/035599 patent/WO2018066480A1/ja active Application Filing
-
2020
- 2020-10-29 US US17/083,462 patent/US11322385B2/en active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008214386A (ja) * | 2007-02-28 | 2008-09-18 | Lintec Corp | 粘着シート |
WO2014203792A1 (ja) * | 2013-06-19 | 2014-12-24 | 綜研化学株式会社 | 偏光板用粘着剤組成物、偏光板用粘着シート、粘着剤層付き偏光板、積層体及びフラットパネルディスプレイ |
JP2015183008A (ja) * | 2014-03-20 | 2015-10-22 | リンテック株式会社 | 粘着シート |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11183416B2 (en) | 2016-10-03 | 2021-11-23 | Lintec Corporation | Adhesive tape for semiconductor processing, and semiconductor device manufacturing method |
US11322385B2 (en) | 2016-10-03 | 2022-05-03 | Lintec Corporation | Adhesive tape for semiconductor processing, and semiconductor device manufacturing method |
US11466178B2 (en) * | 2018-03-23 | 2022-10-11 | Lg Chem, Ltd. | Back-grinding tape |
US11842916B2 (en) | 2018-06-26 | 2023-12-12 | Lintec Corporation | Semiconductor processing adhesive tape and method of manufacturing semiconductor device |
WO2020003919A1 (ja) * | 2018-06-26 | 2020-01-02 | リンテック株式会社 | 半導体加工用粘着テープおよび半導体装置の製造方法 |
KR20210023870A (ko) * | 2018-06-26 | 2021-03-04 | 린텍 가부시키가이샤 | 반도체 가공용 점착 테이프 및 반도체 장치의 제조 방법 |
JP6616558B1 (ja) * | 2018-06-26 | 2019-12-04 | リンテック株式会社 | 半導体加工用粘着テープおよび半導体装置の製造方法 |
US11942353B2 (en) | 2018-06-26 | 2024-03-26 | Lintec Corporation | Adhesive tape for semiconductor processing and method for producing semiconductor device |
KR102603367B1 (ko) | 2018-06-26 | 2023-11-16 | 린텍 가부시키가이샤 | 반도체 가공용 점착 테이프 및 반도체 장치의 제조 방법 |
TWI830764B (zh) * | 2018-08-08 | 2024-02-01 | 日商琳得科股份有限公司 | 端子保護用膠帶以及附電磁波屏蔽膜之半導體裝置的製造方法 |
CN113396057A (zh) * | 2019-03-15 | 2021-09-14 | 琳得科株式会社 | 保护膜形成用片及基板装置的制造方法 |
CN113396057B (zh) * | 2019-03-15 | 2022-11-04 | 琳得科株式会社 | 保护膜形成用片及基板装置的制造方法 |
WO2022209118A1 (ja) * | 2021-03-30 | 2022-10-06 | リンテック株式会社 | 半導体加工用粘着テープおよび半導体装置の製造方法 |
Also Published As
Publication number | Publication date |
---|---|
CN109743881A (zh) | 2019-05-10 |
US10854495B2 (en) | 2020-12-01 |
US11183416B2 (en) | 2021-11-23 |
TW201829708A (zh) | 2018-08-16 |
JPWO2018066408A1 (ja) | 2018-10-04 |
CN109743881B (zh) | 2023-05-23 |
TWI754674B (zh) | 2022-02-11 |
US20210043492A1 (en) | 2021-02-11 |
CN109743877A (zh) | 2019-05-10 |
SG11201902926YA (en) | 2019-05-30 |
US20190382633A1 (en) | 2019-12-19 |
KR102441629B1 (ko) | 2022-09-07 |
US20200040227A1 (en) | 2020-02-06 |
JPWO2018066480A1 (ja) | 2019-03-14 |
KR102363998B1 (ko) | 2022-02-16 |
SG11201902922WA (en) | 2019-05-30 |
WO2018066408A1 (ja) | 2018-04-12 |
CN109743877B (zh) | 2022-06-10 |
JP6475901B2 (ja) | 2019-02-27 |
KR20190059907A (ko) | 2019-05-31 |
JP6386696B1 (ja) | 2018-09-05 |
US11322385B2 (en) | 2022-05-03 |
KR20190059908A (ko) | 2019-05-31 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP6475901B2 (ja) | 半導体加工用粘着テープおよび半導体装置の製造方法 | |
JP7207778B2 (ja) | 半導体加工用粘着テープ、及び半導体装置の製造方法 | |
US11942353B2 (en) | Adhesive tape for semiconductor processing and method for producing semiconductor device | |
US11842916B2 (en) | Semiconductor processing adhesive tape and method of manufacturing semiconductor device | |
WO2017150675A1 (ja) | 半導体加工用粘着テープ、及び半導体装置の製造方法 | |
WO2019181730A1 (ja) | 粘着テープおよび半導体装置の製造方法 | |
WO2019181732A1 (ja) | 粘着テープおよび半導体装置の製造方法 | |
TWI744468B (zh) | 半導體加工用黏著帶以及半導體裝置的製造方法 | |
WO2018168403A1 (ja) | バックグラインドテープ用基材 | |
JP6616558B1 (ja) | 半導体加工用粘着テープおよび半導体装置の製造方法 | |
WO2023188272A1 (ja) | 半導体加工用粘着テープ | |
JP2023118530A (ja) | ワーク加工用保護シートおよびワーク個片化物の製造方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ENP | Entry into the national phase |
Ref document number: 2018543875 Country of ref document: JP Kind code of ref document: A |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 17858318 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 20197008904 Country of ref document: KR Kind code of ref document: A |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 17858318 Country of ref document: EP Kind code of ref document: A1 |