CN117438381A - Sealing film, method for manufacturing electronic component device, and electronic component device - Google Patents
Sealing film, method for manufacturing electronic component device, and electronic component device Download PDFInfo
- Publication number
- CN117438381A CN117438381A CN202311384098.0A CN202311384098A CN117438381A CN 117438381 A CN117438381 A CN 117438381A CN 202311384098 A CN202311384098 A CN 202311384098A CN 117438381 A CN117438381 A CN 117438381A
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- CN
- China
- Prior art keywords
- resin layer
- sealing
- electronic component
- resin
- film
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000000034 method Methods 0.000 title claims abstract description 31
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 22
- 239000011347 resin Substances 0.000 claims abstract description 320
- 229920005989 resin Polymers 0.000 claims abstract description 319
- 229920001187 thermosetting polymer Polymers 0.000 claims abstract description 47
- 239000011256 inorganic filler Substances 0.000 claims abstract description 38
- 229910003475 inorganic filler Inorganic materials 0.000 claims abstract description 38
- 239000004065 semiconductor Substances 0.000 claims description 67
- 239000003822 epoxy resin Substances 0.000 claims description 58
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- 238000003825 pressing Methods 0.000 claims description 4
- 239000010410 layer Substances 0.000 description 241
- 238000001035 drying Methods 0.000 description 85
- 238000001723 curing Methods 0.000 description 78
- 239000011248 coating agent Substances 0.000 description 72
- 238000000576 coating method Methods 0.000 description 72
- 239000011342 resin composition Substances 0.000 description 38
- -1 1, 3-bis [2- (4-hydroxyphenyl) -2-propyl ] benzenediglycidyl ether Chemical compound 0.000 description 33
- 239000000047 product Substances 0.000 description 33
- 239000003795 chemical substances by application Substances 0.000 description 23
- 235000012431 wafers Nutrition 0.000 description 21
- 239000006185 dispersion Substances 0.000 description 20
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- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 16
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- 239000010703 silicon Substances 0.000 description 16
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- 230000000052 comparative effect Effects 0.000 description 9
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- 239000000463 material Substances 0.000 description 8
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- 125000004203 4-hydroxyphenyl group Chemical group [H]OC1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 3
- JFDZBHWFFUWGJE-UHFFFAOYSA-N benzonitrile Chemical compound N#CC1=CC=CC=C1 JFDZBHWFFUWGJE-UHFFFAOYSA-N 0.000 description 3
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- JWAZRIHNYRIHIV-UHFFFAOYSA-N 2-naphthol Chemical compound C1=CC=CC2=CC(O)=CC=C21 JWAZRIHNYRIHIV-UHFFFAOYSA-N 0.000 description 2
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- BATCUENAARTUKW-UHFFFAOYSA-N 4-[(4-hydroxyphenyl)-diphenylmethyl]phenol Chemical compound C1=CC(O)=CC=C1C(C=1C=CC(O)=CC=1)(C=1C=CC=CC=1)C1=CC=CC=C1 BATCUENAARTUKW-UHFFFAOYSA-N 0.000 description 2
- IJWIRZQYWANBMP-UHFFFAOYSA-N 4-[2-(4-hydroxy-3-propan-2-ylphenyl)propan-2-yl]-2-propan-2-ylphenol Chemical compound C1=C(O)C(C(C)C)=CC(C(C)(C)C=2C=C(C(O)=CC=2)C(C)C)=C1 IJWIRZQYWANBMP-UHFFFAOYSA-N 0.000 description 2
- 229930185605 Bisphenol Natural products 0.000 description 2
- VOWWYDCFAISREI-UHFFFAOYSA-N Bisphenol AP Chemical compound C=1C=C(O)C=CC=1C(C=1C=CC(O)=CC=1)(C)C1=CC=CC=C1 VOWWYDCFAISREI-UHFFFAOYSA-N 0.000 description 2
- SDDLEVPIDBLVHC-UHFFFAOYSA-N Bisphenol Z Chemical compound C1=CC(O)=CC=C1C1(C=2C=CC(O)=CC=2)CCCCC1 SDDLEVPIDBLVHC-UHFFFAOYSA-N 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 2
- 229920000877 Melamine resin Polymers 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- NBBJYMSMWIIQGU-UHFFFAOYSA-N Propionic aldehyde Chemical compound CCC=O NBBJYMSMWIIQGU-UHFFFAOYSA-N 0.000 description 2
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 2
- 150000001412 amines Chemical class 0.000 description 2
- 150000003934 aromatic aldehydes Chemical class 0.000 description 2
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 2
- HUMNYLRZRPPJDN-UHFFFAOYSA-N benzaldehyde Chemical compound O=CC1=CC=CC=C1 HUMNYLRZRPPJDN-UHFFFAOYSA-N 0.000 description 2
- ZFVMWEVVKGLCIJ-UHFFFAOYSA-N bisphenol AF Chemical compound C1=CC(O)=CC=C1C(C(F)(F)F)(C(F)(F)F)C1=CC=C(O)C=C1 ZFVMWEVVKGLCIJ-UHFFFAOYSA-N 0.000 description 2
- 239000004202 carbamide Substances 0.000 description 2
- YCIMNLLNPGFGHC-UHFFFAOYSA-N catechol Chemical compound OC1=CC=CC=C1O YCIMNLLNPGFGHC-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- IJOOHPMOJXWVHK-UHFFFAOYSA-N chlorotrimethylsilane Chemical compound C[Si](C)(C)Cl IJOOHPMOJXWVHK-UHFFFAOYSA-N 0.000 description 2
- ZSWFCLXCOIISFI-UHFFFAOYSA-N cyclopentadiene Chemical compound C1C=CC=C1 ZSWFCLXCOIISFI-UHFFFAOYSA-N 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
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- GHMLBKRAJCXXBS-UHFFFAOYSA-N resorcinol Chemical compound OC1=CC=CC(O)=C1 GHMLBKRAJCXXBS-UHFFFAOYSA-N 0.000 description 2
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- 125000002256 xylenyl group Chemical class C1(C(C=CC=C1)C)(C)* 0.000 description 2
- OWEYKIWAZBBXJK-UHFFFAOYSA-N 1,1-Dichloro-2,2-bis(4-hydroxyphenyl)ethylene Chemical compound C1=CC(O)=CC=C1C(=C(Cl)Cl)C1=CC=C(O)C=C1 OWEYKIWAZBBXJK-UHFFFAOYSA-N 0.000 description 1
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- DWDFDMDOTINFJD-UHFFFAOYSA-N benzene-1,3-dicarboxamide;benzene-1,4-dicarboxamide Chemical compound NC(=O)C1=CC=C(C(N)=O)C=C1.NC(=O)C1=CC=CC(C(N)=O)=C1 DWDFDMDOTINFJD-UHFFFAOYSA-N 0.000 description 1
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- ZTQSAGDEMFDKMZ-UHFFFAOYSA-N butyric aldehyde Natural products CCCC=O ZTQSAGDEMFDKMZ-UHFFFAOYSA-N 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 229920002301 cellulose acetate Polymers 0.000 description 1
- DBKNGKYVNBJWHL-UHFFFAOYSA-N chloro-dimethyl-octylsilane Chemical compound CCCCCCCC[Si](C)(C)Cl DBKNGKYVNBJWHL-UHFFFAOYSA-N 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 229910052570 clay Inorganic materials 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000011889 copper foil Substances 0.000 description 1
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 229930003836 cresol Natural products 0.000 description 1
- 229910002026 crystalline silica Inorganic materials 0.000 description 1
- XLJMAIOERFSOGZ-UHFFFAOYSA-M cyanate Chemical compound [O-]C#N XLJMAIOERFSOGZ-UHFFFAOYSA-M 0.000 description 1
- SJJCABYOVIHNPZ-UHFFFAOYSA-N cyclohexyl-dimethoxy-methylsilane Chemical compound CO[Si](C)(OC)C1CCCCC1 SJJCABYOVIHNPZ-UHFFFAOYSA-N 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000113 differential scanning calorimetry Methods 0.000 description 1
- JJQZDUKDJDQPMQ-UHFFFAOYSA-N dimethoxy(dimethyl)silane Chemical compound CO[Si](C)(C)OC JJQZDUKDJDQPMQ-UHFFFAOYSA-N 0.000 description 1
- AHUXYBVKTIBBJW-UHFFFAOYSA-N dimethoxy(diphenyl)silane Chemical compound C=1C=CC=CC=1[Si](OC)(OC)C1=CC=CC=C1 AHUXYBVKTIBBJW-UHFFFAOYSA-N 0.000 description 1
- NHYFIJRXGOQNFS-UHFFFAOYSA-N dimethoxy-bis(2-methylpropyl)silane Chemical compound CC(C)C[Si](OC)(CC(C)C)OC NHYFIJRXGOQNFS-UHFFFAOYSA-N 0.000 description 1
- VHPUZTHRFWIGAW-UHFFFAOYSA-N dimethoxy-di(propan-2-yl)silane Chemical compound CO[Si](OC)(C(C)C)C(C)C VHPUZTHRFWIGAW-UHFFFAOYSA-N 0.000 description 1
- ZDSFBVVBFMKMRF-UHFFFAOYSA-N dimethyl-bis(prop-2-enyl)silane Chemical compound C=CC[Si](C)(C)CC=C ZDSFBVVBFMKMRF-UHFFFAOYSA-N 0.000 description 1
- LIKFHECYJZWXFJ-UHFFFAOYSA-N dimethyldichlorosilane Chemical compound C[Si](C)(Cl)Cl LIKFHECYJZWXFJ-UHFFFAOYSA-N 0.000 description 1
- QBNKDNRLUFTYIN-UHFFFAOYSA-N dodecyl(methoxy)silane Chemical compound CCCCCCCCCCCC[SiH2]OC QBNKDNRLUFTYIN-UHFFFAOYSA-N 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 239000008393 encapsulating agent Substances 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- MABAWBWRUSBLKQ-UHFFFAOYSA-N ethenyl-tri(propan-2-yloxy)silane Chemical compound CC(C)O[Si](OC(C)C)(OC(C)C)C=C MABAWBWRUSBLKQ-UHFFFAOYSA-N 0.000 description 1
- SBRXLTRZCJVAPH-UHFFFAOYSA-N ethyl(trimethoxy)silane Chemical compound CC[Si](OC)(OC)OC SBRXLTRZCJVAPH-UHFFFAOYSA-N 0.000 description 1
- XXOYNJXVWVNOOJ-UHFFFAOYSA-N fenuron Chemical compound CN(C)C(=O)NC1=CC=CC=C1 XXOYNJXVWVNOOJ-UHFFFAOYSA-N 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 239000005350 fused silica glass Substances 0.000 description 1
- LKGYNSULFSODJP-UHFFFAOYSA-N hexane-1,1-diol;phenol Chemical compound OC1=CC=CC=C1.OC1=CC=CC=C1.CCCCCC(O)O LKGYNSULFSODJP-UHFFFAOYSA-N 0.000 description 1
- CZWLNMOIEMTDJY-UHFFFAOYSA-N hexyl(trimethoxy)silane Chemical compound CCCCCC[Si](OC)(OC)OC CZWLNMOIEMTDJY-UHFFFAOYSA-N 0.000 description 1
- 150000002460 imidazoles Chemical class 0.000 description 1
- 150000003949 imides Chemical class 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000012948 isocyanate Substances 0.000 description 1
- 150000002513 isocyanates Chemical class 0.000 description 1
- 238000007561 laser diffraction method Methods 0.000 description 1
- 150000002632 lipids Chemical class 0.000 description 1
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 1
- 239000001095 magnesium carbonate Substances 0.000 description 1
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 1
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 description 1
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 1
- POPACFLNWGUDSR-UHFFFAOYSA-N methoxy(trimethyl)silane Chemical compound CO[Si](C)(C)C POPACFLNWGUDSR-UHFFFAOYSA-N 0.000 description 1
- 239000005055 methyl trichlorosilane Substances 0.000 description 1
- DRXHEPWCWBIQFJ-UHFFFAOYSA-N methyl(triphenoxy)silane Chemical compound C=1C=CC=CC=1O[Si](OC=1C=CC=CC=1)(C)OC1=CC=CC=C1 DRXHEPWCWBIQFJ-UHFFFAOYSA-N 0.000 description 1
- JLUFWMXJHAVVNN-UHFFFAOYSA-N methyltrichlorosilane Chemical compound C[Si](Cl)(Cl)Cl JLUFWMXJHAVVNN-UHFFFAOYSA-N 0.000 description 1
- BFXIKLCIZHOAAZ-UHFFFAOYSA-N methyltrimethoxysilane Chemical compound CO[Si](C)(OC)OC BFXIKLCIZHOAAZ-UHFFFAOYSA-N 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000006082 mold release agent Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- MQWFLKHKWJMCEN-UHFFFAOYSA-N n'-[3-[dimethoxy(methyl)silyl]propyl]ethane-1,2-diamine Chemical compound CO[Si](C)(OC)CCCNCCN MQWFLKHKWJMCEN-UHFFFAOYSA-N 0.000 description 1
- KBJFYLLAMSZSOG-UHFFFAOYSA-N n-(3-trimethoxysilylpropyl)aniline Chemical compound CO[Si](OC)(OC)CCCNC1=CC=CC=C1 KBJFYLLAMSZSOG-UHFFFAOYSA-N 0.000 description 1
- GLTDLAUASUFHNK-UHFFFAOYSA-N n-silylaniline Chemical compound [SiH3]NC1=CC=CC=C1 GLTDLAUASUFHNK-UHFFFAOYSA-N 0.000 description 1
- NXPPAOGUKPJVDI-UHFFFAOYSA-N naphthalene-1,2-diol Chemical compound C1=CC=CC2=C(O)C(O)=CC=C21 NXPPAOGUKPJVDI-UHFFFAOYSA-N 0.000 description 1
- MSRJTTSHWYDFIU-UHFFFAOYSA-N octyltriethoxysilane Chemical compound CCCCCCCC[Si](OCC)(OCC)OCC MSRJTTSHWYDFIU-UHFFFAOYSA-N 0.000 description 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 1
- AHHWIHXENZJRFG-UHFFFAOYSA-N oxetane Chemical compound C1COC1 AHHWIHXENZJRFG-UHFFFAOYSA-N 0.000 description 1
- QNGNSVIICDLXHT-UHFFFAOYSA-N para-ethylbenzaldehyde Natural products CCC1=CC=C(C=O)C=C1 QNGNSVIICDLXHT-UHFFFAOYSA-N 0.000 description 1
- NAYYNDKKHOIIOD-UHFFFAOYSA-N phthalamide Chemical compound NC(=O)C1=CC=CC=C1C(N)=O NAYYNDKKHOIIOD-UHFFFAOYSA-N 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 229920003210 poly(4-hydroxy benzoic acid) Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920006289 polycarbonate film Polymers 0.000 description 1
- 125000003367 polycyclic group Chemical group 0.000 description 1
- 229920006267 polyester film Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- WGYKZJWCGVVSQN-UHFFFAOYSA-N propylamine Chemical group CCCN WGYKZJWCGVVSQN-UHFFFAOYSA-N 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 230000007261 regionalization Effects 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 229920002050 silicone resin Polymers 0.000 description 1
- FGEJJBGRIFKJTB-UHFFFAOYSA-N silylsulfanylsilane Chemical compound [SiH3]S[SiH3] FGEJJBGRIFKJTB-UHFFFAOYSA-N 0.000 description 1
- TXDNPSYEJHXKMK-UHFFFAOYSA-N sulfanylsilane Chemical class S[SiH3] TXDNPSYEJHXKMK-UHFFFAOYSA-N 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- MHSKRLJMQQNJNC-UHFFFAOYSA-N terephthalamide Chemical compound NC(=O)C1=CC=C(C(N)=O)C=C1 MHSKRLJMQQNJNC-UHFFFAOYSA-N 0.000 description 1
- 150000003505 terpenes Chemical class 0.000 description 1
- 235000007586 terpenes Nutrition 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
- 238000001029 thermal curing Methods 0.000 description 1
- 230000003685 thermal hair damage Effects 0.000 description 1
- ALVYUZIFSCKIFP-UHFFFAOYSA-N triethoxy(2-methylpropyl)silane Chemical compound CCO[Si](CC(C)C)(OCC)OCC ALVYUZIFSCKIFP-UHFFFAOYSA-N 0.000 description 1
- WUMSTCDLAYQDNO-UHFFFAOYSA-N triethoxy(hexyl)silane Chemical compound CCCCCC[Si](OCC)(OCC)OCC WUMSTCDLAYQDNO-UHFFFAOYSA-N 0.000 description 1
- CPUDPFPXCZDNGI-UHFFFAOYSA-N triethoxy(methyl)silane Chemical compound CCO[Si](C)(OCC)OCC CPUDPFPXCZDNGI-UHFFFAOYSA-N 0.000 description 1
- XYJRNCYWTVGEEG-UHFFFAOYSA-N trimethoxy(2-methylpropyl)silane Chemical compound CO[Si](OC)(OC)CC(C)C XYJRNCYWTVGEEG-UHFFFAOYSA-N 0.000 description 1
- ZNOCGWVLWPVKAO-UHFFFAOYSA-N trimethoxy(phenyl)silane Chemical compound CO[Si](OC)(OC)C1=CC=CC=C1 ZNOCGWVLWPVKAO-UHFFFAOYSA-N 0.000 description 1
- LFRDHGNFBLIJIY-UHFFFAOYSA-N trimethoxy(prop-2-enyl)silane Chemical compound CO[Si](OC)(OC)CC=C LFRDHGNFBLIJIY-UHFFFAOYSA-N 0.000 description 1
- HQYALQRYBUJWDH-UHFFFAOYSA-N trimethoxy(propyl)silane Chemical compound CCC[Si](OC)(OC)OC HQYALQRYBUJWDH-UHFFFAOYSA-N 0.000 description 1
- 239000005051 trimethylchlorosilane Substances 0.000 description 1
- NLSXASIDNWDYMI-UHFFFAOYSA-N triphenylsilanol Chemical compound C=1C=CC=CC=1[Si](C=1C=CC=CC=1)(O)C1=CC=CC=C1 NLSXASIDNWDYMI-UHFFFAOYSA-N 0.000 description 1
- 229920006337 unsaturated polyester resin Polymers 0.000 description 1
- 239000002966 varnish Substances 0.000 description 1
- UKRDPEFKFJNXQM-UHFFFAOYSA-N vinylsilane Chemical class [SiH3]C=C UKRDPEFKFJNXQM-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/28—Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection
- H01L23/29—Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection characterised by the material, e.g. carbon
- H01L23/293—Organic, e.g. plastic
- H01L23/295—Organic, e.g. plastic containing a filler
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/28—Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection
- H01L23/29—Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection characterised by the material, e.g. carbon
-
- 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
- H01L21/50—Assembly of semiconductor devices using processes or apparatus not provided for in a single one of the subgroups H01L21/06 - H01L21/326, e.g. sealing of a cap to a base of a container
- H01L21/56—Encapsulations, e.g. encapsulation layers, coatings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/28—Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection
- H01L23/31—Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection characterised by the arrangement or shape
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/28—Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection
- H01L23/31—Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection characterised by the arrangement or shape
- H01L23/3107—Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection characterised by the arrangement or shape the device being completely enclosed
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/93—Batch processes
- H01L2224/95—Batch processes at chip-level, i.e. with connecting carried out on a plurality of singulated devices, i.e. on diced chips
- H01L2224/96—Batch processes at chip-level, i.e. with connecting carried out on a plurality of singulated devices, i.e. on diced chips the devices being encapsulated in a common layer, e.g. neo-wafer or pseudo-wafer, said common layer being separable into individual assemblies after connecting
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Structures Or Materials For Encapsulating Or Coating Semiconductor Devices Or Solid State Devices (AREA)
- Encapsulation Of And Coatings For Semiconductor Or Solid State Devices (AREA)
Abstract
The invention discloses a sealing film, a method for manufacturing an electronic component device, and the electronic component device. The sealing film is used for sealing an electronic component, and comprises a sealing resin layer, wherein the sealing resin layer comprises a first resin layer and a second resin layer, the first resin layer comprises a first thermosetting resin and a first inorganic filler, and the second resin layer comprises a second thermosetting resin and a second inorganic filler. The second resin layer has a sealing surface facing the electronic component side when sealing the electronic component, and has a curing shrinkage rate larger than that of the first resin layer.
Description
The present application is a divisional application of the invention patent application having application number 201880020294.0, application date 2018, 3 and 29, and the invention name "sealing film, method of manufacturing electronic component device, and electronic component device".
Technical Field
The present invention relates to a sealing film, and more particularly, to a sealing film used for sealing a semiconductor device such as a semiconductor chip, embedding an electronic component disposed on a printed wiring board, and the like, a method for manufacturing an electronic component device such as a semiconductor device using the sealing film, and an electronic component device.
Background
Along with the miniaturization of electronic devices, miniaturization and thinning of semiconductor devices are advancing. A mounting form of a semiconductor device having substantially the same size as a semiconductor chip or a mounting form of stacking semiconductor devices (package on package (Package on Package)) on a semiconductor device is also actively adopted. Miniaturization and thinning of semiconductor devices are expected to advance further in the future.
As miniaturization of semiconductor chips progresses, the number of terminals increases, and it becomes difficult to provide all external connection terminals on the semiconductor chips. For example, in the case where a large number of external connection terminals are provided, the pitch between the terminals is narrowed, and the terminal height is reduced, so that it is difficult to ensure connection reliability after mounting the semiconductor device. Accordingly, in order to achieve miniaturization and thinning of semiconductor devices, many new mounting methods have been proposed.
For example, there have been proposed a mounting method in which singulated semiconductor chips made of semiconductor wafers are rearranged at appropriate intervals, then sealed with a solid or liquid sealing resin, and external connection terminals are further provided in the sealing resin portion of the resulting sealing molded product, and a semiconductor device manufactured by using the mounting method (for example, refer to patent documents 1 to 4).
Encapsulation of the reconfigured semiconductor chip is typically performed by molding using a liquid or solid resin encapsulant. In the above-described mounting method, the steps of forming the wiring for disposing the external connection terminal, forming the external connection terminal, and the like are performed on the seal molded product produced by sealing.
Since the step of forming the wiring and the external terminal is performed on the sealing molded product, the more semiconductor chips that are rearranged, the more semiconductor devices that can be manufactured in one step. Therefore, the enlargement of the seal molded product has been studied. For example, in order to cope with the use of a semiconductor manufacturing apparatus at the time of wiring formation, a wafer-shaped sealing molded article may be molded. In this case, the wafer is made larger in diameter to simplify the manufacturing process and reduce the cost (for example, refer to patent documents 5 and 6). On the other hand, the sealing molded product has been studied to be made into a panel so that the sealing molded product can be made larger in size and a printed wiring board manufacturing apparatus or the like which is cheaper than the semiconductor manufacturing apparatus can be used.
Prior art literature
Patent literature
Patent document 1: japanese patent No. 3616615
Patent document 2: japanese patent laid-open No. 2001-244372
Patent document 3: japanese patent laid-open No. 2001-127095
Patent document 4: U.S. patent application publication No. 2007/205513 specification
Patent document 5: japanese patent No. 5385247
Patent document 6: japanese patent application laid-open No. 2012-224062
Disclosure of Invention
Problems to be solved by the invention
However, if the sealing molded article is enlarged, there is a tendency that the problem of warpage of the sealing molded article, which occurs when the thermally cured sealing resin is cooled to room temperature, becomes remarkable. Warpage generated in the sealing molded product may cause positional displacement in the dicing step and the rewiring step, and may reduce the reliability of the package. Further, if the warpage is large, there is a possibility that it is difficult to form an insulating resin layer for rewiring, for example, when the insulating resin for rewiring is a liquid material, there is a problem that the seal molded product cannot be fixed to a coater chuck for applying the liquid material.
The present invention has been made in view of the above circumstances, and an object thereof is to provide a sealing film capable of sufficiently suppressing warpage of a sealing molded article, a method for manufacturing an electronic component device using the sealing film, and an electronic component device.
Means for solving the problems
An aspect of the present invention provides a sealing film for sealing an electronic component, which is provided with a sealing resin layer having a first resin layer containing a first thermosetting resin and a first inorganic filler and a second resin layer containing a second thermosetting resin and a second inorganic filler. The second resin layer has a sealing surface facing the electronic component side when sealing the electronic component, and the second resin layer and the first resin layer are laminated in this order from the sealing surface side. The cure shrinkage in the second resin layer is greater than the cure shrinkage in the first resin layer.
The sealing film according to an aspect of the present invention has the above-described configuration, and thus can sufficiently suppress warpage of the sealing molded article.
The ratio of the cure shrinkage of the second resin layer to the cure shrinkage of the first resin layer may be more than 1 and less than 10.
The first thermosetting resin and the second thermosetting resin may be the same or different epoxy resins from each other.
Another aspect of the present invention provides a method of manufacturing an electronic component device, including: pressing the sealing resin layer of the sealing film according to the above-described one aspect of the present invention and the electronic component disposed opposite to the sealing surface under heating, thereby embedding the electronic component in the sealing resin layer; and curing the sealing resin layer to form a sealing layer which is a cured product of the sealing resin layer and seals the electronic component.
Still another aspect of the present invention provides an electronic component device including an electronic component and a sealing portion for sealing the electronic component. The sealing portion may be a cured product of the sealing resin layer of the sealing film according to the present invention. The electronic component may be surrounded by the cured product of the second resin layer in the sealing portion.
In the electronic component device and the method of manufacturing the same, the electronic component may include a semiconductor chip. In this case, the electronic component device is typically a semiconductor device.
ADVANTAGEOUS EFFECTS OF INVENTION
According to one aspect of the present invention, a sealing film capable of sufficiently suppressing warpage of a sealing molded article can be provided. Further, a method for manufacturing an electronic component device such as a semiconductor device using the sealing film and an electronic component device such as a semiconductor device can be provided.
Drawings
Fig. 1 is a schematic cross-sectional view showing a sealing film according to an embodiment.
Fig. 2 (a) is a schematic cross-sectional view of a sealing molded product obtained when a semiconductor chip is sealed with a single-layer sealing film in the related art, and (b) is a schematic cross-sectional view of a sealing molded product obtained when a semiconductor chip is sealed with a sealing film according to one embodiment having a different cure shrinkage ratio.
Fig. 3 is a schematic cross-sectional view for explaining an embodiment of a method of manufacturing a semiconductor device.
Fig. 4 is a schematic cross-sectional view for explaining an embodiment of a method of manufacturing a semiconductor device.
Detailed Description
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. However, the present invention is not limited by the following embodiments.
Fig. 1 is a schematic cross-sectional view showing a sealing film according to an embodiment. The sealing film according to the present embodiment is a sealing film for sealing an electronic component, and includes a sealing resin layer 10 having 2 layers, wherein the sealing resin layer 10 includes a first resin layer 1 and a second resin layer 2, the first resin layer 1 includes a first thermosetting resin and a first inorganic filler, and the second resin layer 2 includes a second thermosetting resin and a second inorganic filler. The main surface on the second resin layer 2 side is a sealing surface 2S facing the electronic component side when the electronic component is sealed.
The curing shrinkage of the second resin layer 2 is larger than that of the first resin layer 1. By sealing the electronic component using such a sealing film, even in the case of a large-sized sealing molded article, warpage of the sealing molded article when the sealing film is returned to room temperature after heat curing can be suppressed. Further, the electronic component can be sealed with good embeddability.
The reason for obtaining such effects is not particularly limited, and the present inventors consider as follows. First, in general, when sealing with a resin sealing material, the coefficient of linear expansion of an object to be sealed such as a semiconductor chip differs from that of the resin sealing material, and therefore, when the resin sealing material is thermally cured and then returns to room temperature, there is a large difference between the shrinkage of the resin sealing material and the shrinkage of the object to be sealed. For example, in the case of using a silicon wafer as a semiconductor chip and using an epoxy resin sealing material for producing a seal molded article, the linear expansion coefficient of the silicon wafer is 3.4ppm/°c, whereas the linear expansion coefficient of the epoxy resin sealing material is about 6ppm/°c even when the inorganic filler is filled in a high ratio, and the thermal shrinkage amounts of the silicon wafer and the epoxy resin sealing material are different depending on the difference in the linear expansion coefficients. Therefore, for example, as shown in fig. 2 (a), in the sealing molded product 100 obtained by sealing the semiconductor chip 20 with the single-layer sealing film 3, warpage is generally generated in such a direction that the cured product 3a side of the resin sealing material (i.e., the side where the semiconductor chip 20 having a small shrinkage is not embedded) becomes concave.
In contrast, in the case of the sealing film according to the present embodiment, as shown in fig. 2 (b), when the semiconductor chip 20 is embedded in the second resin layer 2 side, the amount of heat shrinkage of the second resin layer 2 is larger than that of the first resin layer 1, and therefore the total amount of heat shrinkage of the second resin layer 2 and the semiconductor chip 20 becomes a value close to that of the first resin layer 1. After the heat curing, it is considered that the warpage generated by the heat shrinkage of the cured product 1a of the first resin layer and the warpage generated by the heat shrinkage of the cured product 2a of the second resin layer cancel each other, and as a result, the warpage of the sealing molded product 100 formed by the sealing portion 10a of the cured product as the sealing film and the semiconductor chip 20 sealed therein can be suppressed.
In addition, in the sealing film according to the present embodiment, the second resin layer having a high cure shrinkage rate tends to have relatively high fluidity during curing by heating, as compared with the first resin layer having a low cure shrinkage rate. Therefore, by embedding the electronic component in the second resin layer, the electronic component can be sealed with a good embedding property in which occurrence of unfilling is suppressed.
Further, in the case of the sealing film according to the present embodiment, since the elastic modulus of the first resin layer and the second resin layer is not limited, a material having a high elastic modulus can be applied as the thermosetting resin. Therefore, the sealing film according to the present embodiment is excellent in operability, and is also excellent in that it is less likely to cause a problem of positional displacement of electronic components such as semiconductor chips, and is less likely to cause warpage due to stress of the rewiring layer after the rewiring layer is provided.
The cure shrinkage rates of the first resin layer and the second resin layer can be determined by, for example, the following method based on the change in specific gravity of each resin layer before and after heat curing. The specific gravity of the resin layer at 23℃before heat curing was d 0 And the specific gravity of the resin layer cooled to 23 ℃ after heating and solidifying is d 1 In this case, the expression can be represented by: cure shrinkage (%) = { (d) 1 -d 0 )/d 1 Cure shrinkage was determined as } ×100. The heat curing is performed under a predetermined pressure (for example, 3 MPa). The heating conditions for the heat curing are adjusted so that the resin layer is sufficiently cured and substantially no volume change occurs due to the curing. In addition, it is also possible to use treesThe shrinkage of the cured layer was determined from the change in volume before and after the thermal curing of the lipid layer. Specifically, the difference between the volume changes before and after the heat curing can be determined based on the ratio of the volume before the heat curing of each resin layer. For example, the cure shrinkage (shrinkage) can be determined from the volume change of the sample of the resin layer filled in the mold with respect to temperature using a PVT tester. In this case, the cure shrinkage can be determined by holding the sample at the curing temperature until the sample does not substantially change in volume. The curing shrinkage may include not only shrinkage caused by the curing reaction of the thermosetting resin but also shrinkage caused by reduction of the constituent material caused by the curing treatment due to volatilization of the solvent or the like.
The ratio of the cure shrinkage rate of the second resin layer to the cure shrinkage rate of the first resin layer is not particularly limited as long as it is greater than 1, and may be greater than or equal to 1.05, greater than or equal to 1.10, or greater than or equal to 1.15 from the viewpoint of more effectively suppressing warpage of the seal molded article. The upper limit of the ratio of the cure shrinkage rate of the second resin layer to the cure shrinkage rate of the first resin layer is not particularly limited, and is, for example, less than 10.
From the viewpoints of suppression of warpage and dimensional stability of a molded article, the curing shrinkage of the first resin layer may be, for example, 0.4% or less, 0.3% or less, or 0.2% or less.
The curing shrinkage rate of the second resin layer may be, for example, 0.2% or more, 0.3% or more, or 0.4% or more from the viewpoint of more effectively correcting warpage by utilizing curing shrinkage. The curing shrinkage of the second resin layer may be, for example, less than or equal to 2.0%, less than or equal to 1.5%, or less than or equal to 1.0% from the viewpoint of dimensional stability of the molded article.
The method of adjusting the cure shrinkage rates of the first resin layer and the second resin layer is not particularly limited. For example, the cure shrinkage rates of the first resin layer and the second resin layer may be adjusted by 1 or more methods selected from the following methods: a method of selecting different types of resins as the first thermosetting resin contained in the first resin layer and the second thermosetting resin contained in the second resin layer; a method of changing the kind and/or content of the curing agent or the curing catalyst; and a method of adjusting the curing rate by changing the degree of thermal history in the formation of the first resin layer and the second resin layer.
In the case of a method using thermal history, the curing rate can be improved by increasing the thermal history during the film formation of the resin layer. In general, if the cure rate increases, there is a tendency that the cure shrinkage rate due to heat curing from this state decreases. The magnitude of the thermal history can be adjusted by, for example, the drying temperature and the drying time for forming the first resin layer and the second resin layer. The varnish-like resin composition for forming the second resin layer may be coated on the first resin layer, and the coated varnish-like resin composition may be heated together with the first resin layer, so that the first resin layer may be subjected to a thermal history greater than that of the second resin layer, thereby relatively increasing the curing rate of the first resin layer. The curing rate can be evaluated based on the amount of heat generated by curing, which is measured by differential scanning calorimetry, for example. The curing rate can be determined from the ratio of the amount of heat generated by curing in the resin layer to the reference (curing rate 0%) by taking the amount of heat generated by curing in the resin composition (without solvent or varnish) used for forming the resin layer as the reference.
The thickness of the first resin layer and the second resin layer is not particularly limited, and may be, for example, 30 to 800 μm,50 to 500 μm, or 80 to 300 μm, respectively. If the thickness is 30 μm or more, good embeddability of the electronic component is particularly easy to obtain. If the thickness is less than or equal to 800 μm, the effect of the present invention can be obtained at a higher level. The thicknesses of the first resin layer and the second resin layer may be substantially the same or different, and in different cases, the thickness of the first resin layer may be smaller than the thickness of the second resin layer from the viewpoints of suppression of warpage and thinning of the electronic component. The total thickness of the first resin layer and the second resin layer (thickness of the sealing resin layer) is not particularly limited, and may be 50 to 1000 μm.
The first resin layer contains a first thermosetting resin and a first inorganic filler, and the second resin layer contains a second thermosetting resin and a second inorganic filler. The first thermosetting resin and the second thermosetting resin may be the same as or different from each other, and combining the thermosetting resins different from each other may become a method for making the curing shrinkage rates of the first resin layer and the second resin layer different. The first thermosetting resin and the second thermosetting resin may each be a thermosetting resin described below. Here, "identical" means that the structures of the compounds as thermosetting resins are substantially identical.
The thermosetting resin may be any compound capable of forming a crosslinked structure by a thermosetting reaction, and examples thereof include epoxy resins, phenolic resins, unsaturated imide resins, cyanate resins, isocyanate resins, and benzonitrile resinsOxazine resins, oxetane resins, amino resins, unsaturated polyester resins, allyl resins, dicyclopentadiene resins, silicone resins, triazine resins and melamine resins. The number of these may be 1 alone or 2 or more. These thermosetting resins can be combined with a curing agent and/or a curing catalyst as needed. From the viewpoint of excellent fluidity and suitability for embedding of electronic components, epoxy resins can be used.
The epoxy resin is not particularly limited, and may be a compound having 2 or more epoxy groups (or glycidyl groups) in 1 molecule. Examples of the epoxy resin include bisphenol A type epoxy resin, bisphenol AP type epoxy resin (1, 1-bis (4-hydroxyphenyl) -1-phenylethane diglycidyl ether), bisphenol AF type epoxy resin (2, 2-bis (4-hydroxyphenyl) hexafluoropropane diglycidyl ether), bisphenol B type epoxy resin (2, 2-bis (4-hydroxyphenyl) butanediglycidyl ether), bisphenol BP type epoxy resin (bis (4-hydroxyphenyl) diphenylmethane diglycidyl ether), bisphenol C type epoxy resin (2, 2-bis (3-methyl-4-hydroxyphenyl) propane diglycidyl ether), bisphenol E type epoxy resin (1, 1-bis (4-hydroxyphenyl) ethane diglycidyl ether), bisphenol F type epoxy resin, bisphenol G type epoxy resin (2, 2-bis (4-hydroxy-3-isopropylphenyl) propane diglycidyl ether), bisphenol M type epoxy resin (1, 3-bis [2- (4-hydroxyphenyl) -2-propyl ] benzenediglycidyl ether), bisphenol P type epoxy resin (1, 2-bis (4-hydroxyphenyl) -2-diglycidyl ether), bisphenol PH type epoxy resin (5, 5'- (1-methylethylidene) -bis [1,1' - (bisphenol) -2-ol ] propane diglycidyl ether), bisphenol TMC type epoxy resin (1, 1-bis (4-hydroxyphenyl) -3, 5-trimethylcyclohexane diglycidyl ether), bisphenol Z type epoxy resin (bisphenol S type epoxy resin such as 1, 1-bis (4-hydroxyphenyl) cyclohexane diglycidyl ether), bisphenol S type epoxy resin such as hexanediol bisphenol S diglycidyl ether, novolak type epoxy resin (phenol novolak type epoxy resin and the like), biphenyl type epoxy resin, biphenyl aralkyl type epoxy resin, naphthalene type epoxy resin, epoxy resin of condensate of phenols with aromatic aldehyde having phenolic hydroxyl group, dicyclopentadiene type epoxy resin, dicyclopentadiene aralkyl type epoxy resin, bixylenol type epoxy resin such as xylenol diglycidyl ether, hydrogenated bisphenol A type epoxy resin such as hydrogenated bisphenol A diglycidyl ether, diacid modified diglycidyl ether type epoxy resin, tris (2, 3-epoxypropyl) and aliphatic isocyanurate epoxy resin thereof.
As the epoxy resin, commercially available ones can be used. As the Epoxy resin to be used in the market, examples thereof include naphthalene type Epoxy resins such as EXA4700 (4-functional naphthalene type Epoxy resin) manufactured by DIC Co., ltd., NC-7000 (multifunctional solid Epoxy resin containing a naphthalene skeleton) manufactured by Japanese chemical Co., ltd., epoxy compounds of phenols such as EPPN-502H (triphenol Epoxy resin) manufactured by Japanese chemical Co., ltd., and aromatic aldehydes having phenolic hydroxyl groups, dicyclopentadiene aralkyl type Epoxy resins such as Epiclon HP-7200H (multifunctional solid Epoxy resin containing a dicyclopentadiene skeleton) manufactured by DIC Co., ltd., biphenyl aralkyl type Epoxy resins such as NC-3000H (multifunctional solid Epoxy resin containing a biphenyl skeleton) manufactured by Japanese chemical Co., ltd., epiclon N660 and Epiclon N690 manufactured by DIC Co., ltd., EOCN-104S manufactured by Japanese chemical Co., ltd., and novolac type Epoxy resins such as EOCN-104S, epoxy resins Tri (2, 3-epoxypropyl) isocyanurate such as TEPIC manufactured by Nissan chemical Co., ltd., epiclon 860 manufactured by DIC Co., ltd., epiclon 900-IM, epiclon EXA-4816 and Epiclon EXA-4812 manufactured by Asahi Chiba Co., ltd., araldite AER280 manufactured by Tokyo chemical Co., ltd., epotohto YD-134 manufactured by Mitsubishi chemical Co., ltd., JER and JER872 manufactured by Mitsubishi chemical Co., ltd., ELA-134 manufactured by Sumitomo chemical Co., ltd., ELA-134 Epikote 807, 815, 825, 827, 828, 834, 1001, 1004, 1007 and 1009 manufactured by Yuka Shell Epoxy Co., ltd., DER-330, 301 and 361 manufactured by Dow chemical Co., ltd., bisphenol A type Epoxy resins such as YD8125 and YDF8170 manufactured by Tokyo chemical Co., ltd., JER and other bisphenol F type Epoxy resins manufactured by Mitsubishi chemical Co., ltd., epiclon HP-4032 manufactured by DIC Co., ltd, naphthalene type epoxy resins such as epilon HP-4032, DIC, phenol novolac type epoxy resins such as epilon N-740, nagase ChemteX, denacol DLC301, etc. These epoxy resins may be used alone or in combination of 1 kind or 2 or more kinds.
The content of the first thermosetting resin in the first resin layer may be 5% by mass or more, 10% by mass or more, or 15% by mass or more based on the total amount of the first resin layer from the viewpoint of sufficiently securing film formability even in the presence of an inorganic filler to be described later. From the viewpoint of further reducing the curing shrinkage, the content of the first thermosetting resin in the first resin layer may be 40% by mass or less, 30% by mass or less, or 20% by mass or less, based on the total amount of the first resin layer.
The content of the second thermosetting resin in the second resin layer may be 10% by mass or more, 15% by mass or more, or 20% by mass or more based on the total amount of the second resin layer from the viewpoint of more effective correction of warpage by curing shrinkage. The content of the second thermosetting resin in the second resin layer may be 45 mass% or less, 35 mass% or less, or 30 mass% or less based on the total amount of the second resin layer from the viewpoint of dimensional stability of the seal molded article.
The curing agent capable of being combined with the thermosetting resin is not particularly limited, and for example, in the case of using an epoxy resin as the thermosetting resin, the curing agent may be a compound having 2 or more groups reactive with an epoxy group (glycidyl group) in 1 molecule. The curing agent may be used alone or in combination of at least 2 kinds.
Examples of the curing agent include phenolic resins, acid anhydrides, imidazole compounds, aliphatic amines, and alicyclic amines.
The phenolic resin is not particularly limited as long as it is a compound having 2 or more phenolic hydroxyl groups in 1 molecule. Examples of the phenol resin include phenol compounds such as phenol, cresol, xylenol, resorcinol, catechol, bisphenol a and bisphenol F, or phenol compounds such as α -naphthol, β -naphthol and dihydroxynaphthalene, and aldehyde compounds such as formaldehyde, acetaldehyde, propionaldehyde, benzaldehyde and salicylaldehyde, which are condensed or co-condensed with an acidic catalyst, biphenyl skeleton type phenol resins, terephthalamide type phenol resins, isophthalamide-terephthalamide type phenol resins, melamine type phenol resins, terpene type phenol resins, dicyclopentadiene type phenol resins, cyclopentadiene type phenol resins, polycyclic aromatic ring type phenol resins, and phthalamide type phenol resins.
As the phenolic resin, a commercially available product can be used. Examples of the commercially available phenolic resins include Phenolite LF2882, phenolite LF2822, phenolite TD-2090, phenolite TD-2149, phenolite VH-4150 and Phenolite VH4170, PAPS-PN2, XU.S. Pat. No. 4L, XLC-LL and XLC-4L, SN-100, SN-180, SN-300, SN-395 and SN-400, trisP-HAP, trisP-PA, triP-PHBA, cyRS-PRD4 and MTPC, and AIR WATER, and SK Resin HE910-10.
The content of the curing agent is not particularly limited. For example, in the case of using an epoxy resin as the thermosetting resin and a phenolic resin as the curing agent, the equivalent ratio of the epoxy group to the phenolic hydroxyl group (epoxy group/phenolic hydroxyl group) may be 0.5 to 3.0 or 1.0 to 1.5. In the case of other curing agents, the equivalent ratio of epoxy groups to groups reactive with epoxy groups (epoxy groups/groups reactive with epoxy groups) may be 0.5 to 3.0 or 1.0 to 1.5.
The curing catalyst that can be combined with the epoxy resin is not particularly limited, but is preferably an amine-based, imidazole-based, urea-based or phosphorus-based curing catalyst. Examples of the amine-based curing catalyst include 1, 8-diazabicyclo [5.4.0] undec-7-ene and 1, 5-diazabicyclo [4.3.0] non-5-ene. Examples of the imidazole-based curing catalyst include 2-ethyl-4-methylimidazole and 1-cyanoethyl-2-ethyl-4-methylimidazole. Examples of the urea-based curing catalyst include 3-phenyl-1, 1-dimethylurea and the like. Examples of the phosphorus-based curing catalyst include triphenylphosphine and its addition reactant, (4-hydroxyphenyl) diphenylphosphine, bis (4-hydroxyphenyl) phenylphosphine, and tris (4-hydroxyphenyl) phosphine. Among them, imidazole-based curing accelerators are abundant in derivatives, and a desired activation temperature can be easily obtained. Examples of the commercially available imidazole-based curing accelerator include 2PHZ-PW and 2P4MZ manufactured by Kagaku Kogyo Co., ltd.
The content of the curing catalyst is not particularly limited, and may be, for example, 0.05 to 1.0 parts by mass, or 0.1 to 0.5 parts by mass, relative to 100 parts by mass of the total amount of the thermosetting resins.
The first inorganic filler and the second inorganic filler may be the same type or different types.
Examples of the inorganic filler include particles of barium sulfate, barium titanate, amorphous silica, crystalline silica, fused silica, spherical silica, talc, clay, magnesium carbonate, calcium carbonate, alumina, aluminum hydroxide, silicon nitride, aluminum nitride, and the like. From the viewpoint of easily obtaining desired cured film characteristics due to having a small thermal expansion coefficient, silica particles are preferable as the inorganic filler. The inorganic filler may be used alone or in combination of 2 or more. The shape of the inorganic filler is not limited to the spherical shape, and may be a flake (plate) shape or a fiber shape. The second inorganic filler contained in the second resin layer may be a spherical inorganic filler which is easy to obtain fluidity from the viewpoint of embedding property of the electronic component.
The inorganic filler may be surface-modified. The method of surface modification is not particularly limited, and a method using a silane coupling agent is simple and convenient, and a silane coupling agent having a variety of functional groups can be used and desired properties can be easily imparted thereto. Examples of the silane coupling agent include alkylsilanes, alkoxysilanes, vinylsilanes, epoxysilanes, aminosilanes, acryloylsilanes, methacryloylsilanes, mercaptosilanes, thioether silanes, isocyanate silanes, sulfur silanes, styrylsilanes, and alkylchlorosilanes.
Specific examples of the silane coupling agent include methyltrimethoxysilane, dimethyldimethoxysilane, trimethylmethoxysilane, methyltriethoxysilane, methyltriphenoxysilane, ethyltrimethoxysilane, n-propyltrimethoxysilane, diisopropyldimethoxysilane, isobutyltrimethoxysilane, diisobutyldimethoxysilane, isobutyltriethoxysilane, n-hexyltrimethoxysilane, n-hexyltriethoxysilane, cyclohexylmethyldimethoxysilane, n-octyltriethoxysilane, n-dodecylmethoxysilane, phenyltrimethoxysilane, diphenyldimethoxysilane, triphenylsilanol, methyltrichlorosilane, dimethyldichlorosilane, trimethylchlorosilane, n-octyldimethylchlorosilane, tetraethoxysilane, 3-aminopropyltrimethoxysilane, 3- (2-aminoethyl) aminopropylmethyldimethoxysilane, 3-phenylaminopropyltrimethoxysilane, 3-epoxypropoxypropyltrimethoxysilane, 3-epoxypropoxypropylmethyldimethoxysilane, 3-epoxypropoxypropyltriethoxysilane, 3- (3-epoxypropyltriethoxysilane), 3- (triethoxysilyl) triethoxysilane, and (triethoxysilane) bis- (3-aminopropyl) silyl sulfide, and (triethoxysilane), vinyl triisopropoxysilane, allyl trimethoxysilane, diallyl dimethyl silane, 3-methacryloxypropyl trimethoxysilane, 3-methacryloxypropyl methyl dimethoxy silane, 3-methacryloxypropyl triethoxysilane, 3-mercaptopropyl trimethoxysilane, 3-mercaptopropyl methyl dimethoxy silane, 3-mercaptopropyl triethoxysilane, N- (1, 3-dimethylbutyloxy) -3-aminopropyl triethoxysilane, and aminosilanes. The number of these may be 1 alone or 2 or more.
The average particle diameter of the inorganic filler is not particularly limited, and may be, for example, 0.01 to 50. Mu.m. The average particle diameter of the inorganic filler can be measured by, for example, a laser diffraction method.
From the viewpoint of reduction in the heat shrinkage amount, the content of the first inorganic filler in the first resin layer may be 60 mass% or more, 70 mass% or more, or 80 mass% or more based on the total amount of the first resin layer. From the viewpoint of sufficiently securing film formability, the content of the first inorganic filler in the first resin layer may be 95 mass% or less, 90 mass% or less, or 85 mass% or less based on the total amount of the first resin layer.
The content of the second inorganic filler in the second resin layer may be 55 mass% or more, 65 mass% or more, or 70 mass% or more based on the total amount of the second resin layer from the viewpoint of dimensional stability of the seal molded article. From the viewpoint of sufficiently securing film formability, the content of the second inorganic filler in the second resin layer may be 95 mass% or less, 90 mass% or less, or 85 mass% or less based on the total amount of the second resin layer.
The first resin layer and the second resin layer may contain components other than the above. Such a component may be a component commonly used in sealing films. Examples thereof include antioxidants, flame retardants, ion capturing agents, pigments, dyes, silane coupling agents, and elastomers.
The sealing film may further include a film-like support. In this case, a first resin layer and a second resin layer are generally provided in order from the support body side. The support is not particularly limited as long as it can be removed after sealing, and may be, for example, a polymer film or a metal foil.
Examples of the polymer film that can be used as the support include polyolefin films such as polyethylene films and polypropylene films, polyester films such as polyethylene terephthalate films, polyvinyl chloride films, polycarbonate films, acetyl cellulose films, polyimide films, polyamide films, and tetrafluoroethylene films. Examples of the metal foil that can be used as the support include copper foil and aluminum foil.
For the film-like support, a mold release treatment may be performed to make it easy to peel. As a method of the mold release treatment, for example, a method of applying a mold release agent to the surface of a support and drying the same is mentioned. Examples of the release agent include silicone-based, fluorine-based, and olefin-based release agents. The surface of the metal foil may be etched with an acid or the like.
The thickness of the film-like support is not particularly limited, and may be 2 to 200 μm from the viewpoint of handleability and drying property when the resin layer is formed by coating. If the thickness of the support is 2 μm or more, there is little concern that the support will be broken or deformed by the weight of the varnish-like resin composition when the varnish-like resin composition is applied in order to form the resin layer. If the thickness of the support is 200 μm or less, drying (removal of the organic solvent) of the varnish-like resin composition can be effectively performed even in the case of using a dryer in which drying is performed by blowing hot air mainly from both surfaces of the coated surface and the back surface.
The sealing film may further include a protective layer (e.g., a protective film) that covers a main surface of the sealing resin layer (or the second resin layer) opposite to the support for the purpose of protecting the first resin layer and the second resin layer. By providing the protective layer, the operability of the sealing film is improved, and the problem that the resin layer adheres to the back surface of the support body can be avoided even when the sealing film is wound.
The protective layer is not particularly limited, and for example, the same protective layer as that exemplified as the film-like support can be used.
The thickness of the protective layer is not particularly limited, and may be, for example, 12 to 100 μm from the viewpoints of sufficient protective effect and reduction in thickness when the sealing film is wound into a roll.
The sealing film according to the present embodiment can be produced by, for example, forming a first resin layer and a second resin layer separately and bonding them together, or sequentially forming the first resin layer and the second resin layer on a film-like support.
The first resin layer and the second resin layer can be formed by mixing the components constituting the first resin layer and the second resin layer, and forming a film of the obtained resin composition. An organic solvent may be added to the resin composition to be formed to prepare a varnish-like resin composition, which is applied to a support, and the coating film is dried to form a first resin layer and a second resin layer. The varnish-like resin composition may be applied to the support and the coating film may be dried continuously, for example, while the support is wound off from a roll of the support. The cure shrinkage rates of the first resin layer and the second resin layer may be adjusted according to the drying conditions at this time.
Warpage of a seal molded article obtained by using a seal film can be evaluated by, for example, producing a wafer level package or an evaluation substrate simulating a wafer level package. At this time, the embedding property of the semiconductor chip can be evaluated at the same time.
Next, a method for manufacturing an electronic component device using the sealing film according to the present embodiment will be described. Hereinafter, a method for manufacturing a semiconductor device including a semiconductor chip as a representative example of an electronic component will be described in detail.
Fig. 3 and 4 are schematic cross-sectional views showing an embodiment of a method of manufacturing a semiconductor device. The method according to the present embodiment includes the steps of: a step of adhering a temporary fixing material 40 to the substrate 30, and temporarily fixing the plurality of semiconductor chips 20 to the temporary fixing material 40 (fig. 3 (a)); the step (b) and (c) of embedding the semiconductor chip 20 in the sealing resin layer 10 by overlapping the temporarily fixed semiconductor chip 20 and the sealing film (sealing resin layer) 10 having the first resin layer 1 and the second resin layer 2 provided on the first resin layer 1 in the direction in which the semiconductor chip 20 is arranged opposite to the sealing surface 2S of the sealing resin layer 10 (the direction in which the sealing surface 2S of the second resin layer 2 contacts the semiconductor chip), and pressing them under heating in this state; and a step of curing the sealing film 10 in which the semiconductor chip 20 is embedded (fig. 3 (c)). By curing, a sealing portion 10a for sealing the semiconductor chip 20, which is formed of the cured product 1a of the first resin layer and the cured product 2a of the second resin layer, is formed. In the sealing portion 10a, the boundary between the cured product 1a of the first resin layer and the cured product 2a of the second resin layer is not necessarily clear.
In the method of the present embodiment, a lamination method may be used or compression molding may be used to press the sealing film.
The laminator used in the lamination method is not particularly limited, and examples thereof include roll type and balloon type laminators. Among them, from the viewpoint of further improving the embeddability, a balloon type that can be pressurized under vacuum can be used.
The temperature (for example, lamination temperature) for embedding the semiconductor chip is adjusted so that the sealing resin layer 10 (particularly, the second resin layer 2) flows to embed the semiconductor chip. The temperature is set to be less than or equal to the softening point of the support when the support is present. Further, the temperature may be a temperature at or near which the second resin layer exhibits the lowest melt viscosity. The pressure for embedding the semiconductor chip varies depending on the size and density of the semiconductor chip (or electronic component), and may be, for example, 0.2 to 1.5MPa, or 0.3 to 1.0MPa. The pressing time is not particularly limited and may be 20 to 600 seconds, 30 to 300 seconds, or 40 to 120 seconds.
The curing of the sealing resin layers (the first resin layer and the second resin layer) can be performed, for example, under the atmosphere or under an inert gas. The curing temperature is not particularly limited and may be 80 to 280 ℃,100 to 240 ℃, or 120 to 200 ℃. If the curing temperature is 80℃or higher, the curing of the sealing film proceeds sufficiently, and occurrence of defects can be suppressed particularly effectively. In the case where the curing temperature is 280 ℃ or less, occurrence of thermal damage to other materials can be suppressed. The curing time is not particularly limited and may be 30 to 600 minutes, 45 to 300 minutes, or 60 to 240 minutes. If the curing time is within these ranges, the curing of the sealing resin layer proceeds sufficiently, and good production efficiency can be obtained. The curing conditions may also be a combination of conditions that differ in temperature and/or time.
The step of embedding the electronic component (semiconductor chip 20) in the sealing resin layer 10 and the step of curing the sealing resin layer 10 to form the sealing portion 10a may be separate steps or may be performed simultaneously or sequentially. For example, the sealing resin layer and the electronic component may be pressed while being heated, so that the electronic component is embedded in the sealing resin layer, and the sealing resin layer is cured to form a sealing portion for sealing the electronic component.
In this embodiment, a semiconductor device can be obtained through the following steps of insulating layer formation, wiring pattern formation, ball mounting (Ball Mount), and dicing. In order to effectively perform these steps with high accuracy, it is desirable that the warpage of the seal molded article 100 be small.
First, the temporary fixing material 40 is peeled off together with the substrate 30, and a sealing molded article 100 formed of the semiconductor chip 20 and the sealing portion 10a sealing the semiconductor chip 20 is obtained (fig. 4 (a)). The semiconductor chip 20 is exposed in one main surface of the sealing molded article 100. An insulating layer 50 is provided on the main surface of the sealing molded product on the side where the semiconductor chip 20 is exposed (fig. 4 (b)). Next, the insulating layer 50 is patterned to form wiring 54, and balls 56 are implanted on the patterned insulating layer 52 (fig. 4 (c)).
Next, the seal molded product is singulated by the dicing saw 60 ((d) and (e) of fig. 4). Thus, the semiconductor device 200 including the semiconductor chip 20 and the sealing portion 10a of the cured product of the sealing resin layer as the sealing film according to the present embodiment is obtained. In the semiconductor device 200, the semiconductor chip 20 is embedded in the sealing portion 10a so as to be surrounded by the cured product 2a of the second resin layer in the sealing portion 10 a.
While the preferred embodiments of the sealing film, the semiconductor device, and the method for manufacturing the electronic component device according to the present invention have been described above, the present invention is not necessarily limited to the above embodiments, and may be appropriately modified within a range not departing from the gist thereof.
Examples
Hereinafter, the present invention will be described more specifically with reference to examples, but the present invention is not limited to these examples.
Production of sealing film
As components constituting the sealing film, the following materials were prepared.
[ thermosetting resin ]
A1: bisphenol F type epoxy resin (Mitsubishi chemical Co., ltd., JER/806/epoxy equivalent: 160)
[ curing agent ]
B1: phenol novolak resin (PAPS-PN 2/hydroxyl equivalent: 104, manufactured by Asahi organic materials Co., ltd.)
B2: trimethane type phenol resin (TrisP-HAP/hydroxyl equivalent: 102, manufactured by Benzhou chemical industry Co., ltd.)
[ inorganic filler ]
C1: silica (manufactured by Admatechs, inc., SX-E2, phenylaminosilane treatment/average particle diameter 5.8 μm)
[ curing catalyst ]
D1: imidazole (manufactured by four kingdoms chemical industry Co., ltd., 2 PHZ-PW)
[ organic solvent ]
E1: methyl ethyl ketone
Example 1
497.5g of an organic solvent E1 was added to a 10L plastic container, 3500g of an inorganic filler C1 was added thereto, and the inorganic filler C1 was dispersed in the organic solvent by a stirring blade. To this dispersion was added 300g of thermosetting resin A1 and 460g of curing agent B1, and the dispersion was stirred. After the thermosetting resin A1 and the curing agent B1 were visually confirmed to be dissolved, 2.5g of the curing catalyst D1 was added, and the dispersion was further stirred for 1 hour. The dispersion was filtered through a nylon #200 mesh (75 μm open) to obtain a filtrate as a varnish-like resin composition.
The varnish-like resin composition thus obtained was applied to a film-like support (38 μm thick polyethylene terephthalate) using a coater, and the support and the coating film were passed through a drying oven at a predetermined drying rate, whereby the coating film was dried, and a first resin layer or a second resin layer (thickness 100 μm) was formed on the support, respectively. The coating and drying speeds mean the moving speed of the support. The temperature and the oven length of the drying conditions mean the temperature in the drying oven and the moving distance of the support in the drying oven, respectively. They are the same even in other examples and comparative examples.
(first resin layer)
The coating head mode: angle wheel (comma)
Coating and drying speed: 2 m/min
Drying conditions (temperature/oven length): 110 ℃/3.3m,130 ℃/3.3m,140 ℃/3.3m
(second resin layer)
The coating head mode: angle wheel
Coating and drying speed: 3 m/min
Drying conditions (temperature/oven length): 90 ℃/3.3m,110 ℃/3.3m,120 ℃/3.3m
The first resin layer and the second resin layer were bonded by vacuum lamination, and a sealing film having a sealing resin layer composed of 2 layers including the first resin layer and the second resin layer was obtained.
Example 2
A varnish-like resin composition was produced in the same manner as in example 1, except that the amount of the curing catalyst D1 was changed from 2.5g to 7.5 g. The varnish-like resin composition thus obtained was applied to a film-like support (38 μm thick polyethylene terephthalate) using a coater, and the support and the coating film were passed through a drying oven at a predetermined drying rate, whereby the coating film was dried, and a first resin layer (thickness 100 μm) was formed on the support.
The coating head mode: angle wheel
Coating and drying speed: 2 m/min
Drying conditions (temperature/oven length): 110 ℃/3.3m,130 ℃/3.3m,140 ℃/3.3m
A varnish-like resin composition was produced in the same manner as in example 1. The varnish-like resin composition thus obtained was applied to a film-like support (38 μm thick polyethylene terephthalate) using a coater, and the support and the coating film were passed through a drying oven at a predetermined drying rate, whereby the coating film was dried, and a second resin layer (thickness 100 μm) was formed on the support.
The coating head mode: angle wheel
Coating and drying speed: 2 m/min
Drying conditions (temperature/oven length): 90 ℃/3.3m,110 ℃/3.3m,120 ℃/3.3m
The first resin layer and the second resin layer were bonded by vacuum lamination, and a sealing film having a sealing resin layer composed of 2 layers including the first resin layer and the second resin layer was obtained.
Example 3
A varnish-like resin composition was produced in the same manner as in example 1, except that the amount of the curing catalyst D1 was changed from 2.5g to 7.5 g. The varnish-like resin composition thus obtained was applied to a film-like support (38 μm thick polyethylene terephthalate) using a coater, and the support and the coating film were passed through a drying oven at a predetermined drying rate, whereby the coating film was dried, and a first resin layer (thickness 100 μm) was formed on the support.
The coating head mode: angle wheel
Coating and drying speed: 3 m/min
Drying conditions (temperature/oven length): 110 ℃/3.3m,130 ℃/3.3m,140 ℃/3.3m
A varnish-like resin composition was produced in the same manner as in example 1. The resulting film was applied to a film-like support (38 μm thick polyethylene terephthalate) using a coater, and the support and the film were passed through a drying oven at a predetermined drying rate, whereby the film was dried, and a second resin layer (thickness 100 μm) was formed on the support.
The coating head mode: angle wheel
Coating and drying speed: 2 m/min
Drying conditions (temperature/oven length): 90 ℃/3.3m,110 ℃/3.3m,120 ℃/3.3m
The first resin layer and the second resin layer were bonded by vacuum lamination, and a sealing film having a sealing resin layer composed of 2 layers including the first resin layer and the second resin layer was obtained.
Example 4
A varnish-like resin composition was produced in the same manner as in example 1. The resulting film was applied to a film-like support (38 μm thick polyethylene terephthalate) using a coater under the following conditions, and the coating film was dried to form a first resin layer (thickness 100 μm) on the support.
The coating head mode: angle wheel
Coating and drying speed: 2 m/min
Drying conditions (temperature/oven length): 90 ℃/3.3m,110 ℃/3.3m,120 ℃/3.3m
A varnish-like resin composition was produced in the same manner as in example 1. The resulting film was applied to a film-like support (38 μm thick polyethylene terephthalate) using a coater, and the support and the film were passed through a drying oven at a predetermined drying rate, whereby the film was dried, and a second resin layer (thickness 100 μm) was formed on the support.
The coating head mode: angle wheel
Coating and drying speed: 2.5 m/min
Drying conditions (temperature/oven length): 90 ℃/3.3m,110 ℃/3.3m,120 ℃/3.3m
Example 5
A varnish-like resin composition was produced in the same manner as in example 1. The resulting film was applied to a film-like support (38 μm thick polyethylene terephthalate) using a coater, and the support and the film were passed through a drying oven at a predetermined drying rate, whereby the film was dried, and a first resin layer (thickness 100 μm) was formed on the support.
The coating head mode: angle wheel
Coating and drying speed: 2 m/min
Drying conditions (temperature/oven length): 90 ℃/3.3m,110 ℃/3.3m,120 ℃/3.3m
497.5g of an organic solvent E1 was added to a 10L plastic container, 3500g of an inorganic filler C1 was added thereto, and the inorganic filler C1 was dispersed in the organic solvent by a stirring blade. To this dispersion was added 296g of thermosetting resin A1 and 464g of curing agent B2, and the dispersion was stirred. After the thermosetting resin A1 and the curing agent B2 were visually confirmed to be dissolved, 2.5g of the curing catalyst D1 was added, and the dispersion was further stirred for 1 hour. The dispersion was filtered through a nylon #200 mesh (75 μm open) to obtain a filtrate as a varnish-like resin composition.
The varnish-like resin composition thus obtained was applied to a film-like support (38 μm thick polyethylene terephthalate) using a coater, and the support and the coating film were passed through a drying oven at a predetermined drying rate, whereby the coating film was dried, and a second resin layer (thickness 100 μm) was formed on the support.
The coating head mode: angle wheel
Coating and drying speed: 3 m/min
Drying conditions (temperature/oven length): 90 ℃/3.3m,110 ℃/3.3m,120 ℃/3.3m
Example 6
497.5g of an organic solvent E1 was added to a 10L plastic container, 3350g of an inorganic filler C1 was added thereto, and the inorganic filler C1 was dispersed in the organic solvent by a stirring blade. To this dispersion was added 360g of thermosetting resin A1 and 550g of curing agent B1, and the dispersion was stirred. After the thermosetting resin A1 and the curing agent B1 were visually confirmed to be dissolved, 3.0g of the curing catalyst D1 was added, and the dispersion was further stirred for 1 hour. The dispersion was filtered through a nylon #200 mesh (75 μm open) to obtain a filtrate as a varnish-like resin composition.
The varnish-like resin composition thus obtained was applied to a film-like support (38 μm thick polyethylene terephthalate) using a coater, and the support and the coating film were passed through a drying oven at a predetermined drying rate, whereby the coating film was dried, and a first resin layer (thickness 100 μm) was formed on the support.
The coating head mode: angle wheel
Coating and drying speed: 3 m/min
Drying conditions (temperature/oven length): 90 ℃/3.3m,110 ℃/3.3m,120 ℃/3.3m
497.5g of an organic solvent E1 was added to a 10L plastic container, 3200g of an inorganic filler C1 was added thereto, and the inorganic filler C1 was dispersed in the organic solvent by using a stirring blade. To this dispersion was added 419g of thermosetting resin A1 and 641g of curing agent B1, and the dispersion was stirred. After the thermosetting resin A1 and the curing agent B1 were visually confirmed to be dissolved, 3.5g of the curing catalyst D1 was added, and the dispersion was further stirred for 1 hour. The dispersion was filtered through a nylon #200 mesh (75 μm open) to obtain a filtrate as a varnish-like resin composition.
The varnish-like resin composition thus obtained was applied to a film-like support (38 μm thick polyethylene terephthalate) using a coater, and the support and the coating film were passed through a drying oven at a predetermined drying rate, whereby the coating film was dried, and a second resin layer (thickness 100 μm) was formed on the support.
The coating head mode: angle wheel
Coating and drying speed: 3 m/min
Drying conditions (temperature/oven length): 90 ℃/3.3m,110 ℃/3.3m,120 ℃/3.3m
Comparative example 1
A varnish-like resin composition similar to that of example 1 was applied to a film-like support (38 μm thick polyethylene terephthalate) using a coater, and the support and the coating film were passed through a drying oven at a predetermined drying rate, whereby the coating film was dried, and a first resin layer and a second resin layer (thickness 100 μm) were formed on the support, respectively.
(first resin layer)
The coating head mode: angle wheel
Coating and drying speed: 3 m/min
Drying conditions (temperature/oven length): 90 ℃/3.3m,110 ℃/3.3m,120 ℃/3.3m
(second resin layer)
The coating head mode: angle wheel
Coating and drying speed: 2 m/min
Drying conditions (temperature/oven length): 110 ℃/3.3m,130 ℃/3.3m,140 ℃/3.3m
The first resin layer and the second resin layer were bonded by vacuum lamination, and a sealing film having a sealing resin layer composed of 2 layers including the first resin layer and the second resin layer was obtained.
Comparative example 2
A varnish-like resin composition similar to that of example 1 was applied to a film-like support (38 μm thick polyethylene terephthalate) using a coater, and the support and the coating film were passed through a drying oven at a predetermined drying rate, whereby the coating film was dried, and a first resin layer (thickness 100 μm) was formed on the support.
The coating head mode: angle wheel
Coating and drying speed: 2 m/min
Drying conditions (temperature/oven length): 90 ℃/3.3m,110 ℃/3.3m,120 ℃/3.3m
A varnish-like resin composition was produced in the same manner as in example 1, except that the amount of the curing catalyst D1 was changed from 2.5g to 7.5 g. The varnish-like resin composition thus obtained was applied to a film-like support (38 μm thick polyethylene terephthalate) using a coater, and the support and the coating film were passed through a drying oven at a predetermined drying rate, whereby the coating film was dried, and a second resin layer (thickness 100 μm) was formed on the support.
The coating head mode: angle wheel
Coating and drying speed: 2 m/min
Drying conditions (temperature/oven length): 110 ℃/3.3m,130 ℃/3.3m,140 ℃/3.3m
The first resin layer and the second resin layer were bonded by vacuum lamination, and a sealing film having a sealing resin layer composed of 2 layers including the first resin layer and the second resin layer was obtained.
Comparative example 3
A varnish-like resin composition similar to that of example 1 was applied to a film-like support (38 μm thick polyethylene terephthalate) using a coater, and the support and the coating film were passed through a drying oven at a predetermined drying rate, whereby the coating film was dried, and a first resin layer (thickness 100 μm) was formed on the support.
The coating head mode: angle wheel
Coating and drying speed: 2 m/min
Drying conditions (temperature/oven length): 90 ℃/3.3m,110 ℃/3.3m,120 ℃/3.3m
A varnish-like resin composition similar to that of example 1 was applied to a film-like support (38 μm thick polyethylene terephthalate) using a coater, and the support and the coating film were passed through a drying oven at a predetermined drying rate, whereby the coating film was dried, and a second resin layer (thickness 100 μm) was formed on the support.
The coating head mode: angle wheel
Coating and drying speed: 1.5 m/min
Drying conditions (temperature/oven length): 90 ℃/3.3m,110 ℃/3.3m,120 ℃/3.3m
The first resin layer and the second resin layer were bonded by vacuum lamination, and a sealing film having a sealing resin layer composed of 2 layers including the first resin layer and the second resin layer was obtained.
Comparative example 4
A varnish-like resin composition similar to that of example 1 was applied to a film-like support (38 μm thick polyethylene terephthalate) using a coater, and the support and the coating film were passed through a drying oven at a predetermined drying rate, whereby the coating film was dried, and a resin layer (thickness 100 μm) was formed on the support.
The coating head mode: angle wheel
Coating and drying speed: 2 m/min
Drying conditions (temperature/oven length): 90 ℃/3.3m,110 ℃/3.3m,120 ℃/3.3m
The two obtained resin layers were bonded by vacuum lamination to obtain a sealing film having a sealing resin layer composed of 1 layer having a thickness of 200 μm.
Comparative example 5
497.5g of an organic solvent E1 was added to a 10L plastic container, 3500g of an inorganic filler C1 was added thereto, and the inorganic filler C1 was dispersed in the organic solvent by a stirring blade. To this dispersion was added 296g of thermosetting resin A1 and 464g of curing agent B2, and the dispersion was stirred. After the thermosetting resin A1 and the curing agent B2 were visually confirmed to be dissolved, 2.5g of the curing catalyst D1 was added, and the dispersion was further stirred for 1 hour. The dispersion was filtered through a nylon #200 mesh (75 μm open) to obtain a filtrate as a varnish-like resin composition.
The varnish-like resin composition thus obtained was applied to a film-like support (38 μm thick polyethylene terephthalate) using a coater, and the coating film was dried to form a resin layer (thickness 100 μm) on the support.
The coating head mode: angle wheel
Coating and drying speed: 3 m/min
Drying conditions (temperature/oven length): 90 ℃/3.3m,110 ℃/3.3m,120 ℃/3.3m
The two obtained resin layers were bonded by vacuum lamination to obtain a sealing film having a sealing resin layer composed of 1 layer having a thickness of 200 μm.
The blending amount, thickness, drying speed, drying conditions and curing shrinkage of the resin compositions in each example are summarized in Table 1.
TABLE 1
Evaluation test
(Cure shrinkage)
The support of the sealing film produced in each of the examples and comparative examples was peeled off to obtain an evaluation sample for measuring the cure shrinkage. The cure shrinkage (%) was measured using a PVT tester (manufactured by Toyo Seiki Seisakusho Co., ltd.) under the following conditions. The results are shown in tables 1 and 2.
Evaluating sample quality: 8g
Heating conditions: raising the temperature from 40 ℃ to 140 ℃, keeping the temperature at 140 ℃ for 2 hours, and cooling to room temperature (23 ℃)
Pressure: 3MPa of
Barrel diameter: 11.284mm (area: 1.0 cm) 2 )
(warpage and chip-embedding Property)
As a support, SUS plates having a diameter of 220mm and a thickness of 1.5mm were prepared. The temporary fixing film was attached to one side of the SUS plate using a laminator. The temporary fixing film protruding from the SUS plate was cut with a cutter blade.
Next, silicon wafers having a thickness of 150 μm and a thickness of 7.3mm×7.3mm were arranged in a lattice shape on the temporary fixing film, and an evaluation substrate was obtained. The number of silicon wafers to be mounted was 193, and the intervals (pitch) between the silicon wafers were set to 9.6mm in both the longitudinal and transverse directions. A wafer sorter (CAP 3500, canon machines Co., ltd.) was used for the arrangement of the silicon wafers. The charge reset at the time of configuration was 1kgf per 1 silicon wafer.
The sealing resin layers of the sealing films produced in examples and comparative examples were stacked on the produced evaluation substrate in such a manner that the second resin layer was located on the silicon wafer side, and the sealing resin layers and the silicon wafer were pressed while heating the substrate in this state by using a vacuum laminator, whereby the silicon wafer was embedded in the sealing resin layers, and the sealing resin layers were thermally cured to form a sealing portion for sealing the silicon wafer. The temporary fixing film was peeled off from the obtained seal molded article with the silicon wafer side facing downward, and the orientation of the warpage of the seal molded article and the amount of warpage from the bottom surface to the portion where the warpage was maximum were measured by a ruler. "convex" in the direction of warpage means that warpage occurs in accordance with the direction in which the sealing portion side becomes convex.
The surface of the sealing molded article on the silicon wafer side after peeling from the temporary fixing film was visually checked, and the chip embedding property was determined based on whether or not the space between the silicon wafers was filled with resin. The case where there is no unfilled portion is determined as "good". In comparative example 1, since there was a problem in the embeddability, no evaluation of warpage was performed.
TABLE 2
TABLE 3
The evaluation results are shown in tables 2 and 3. According to the sealing film of the embodiment in which the curing shrinkage ratio of the second resin layer is larger than that of the first resin layer, the silicon wafer can be sealed with good embeddability while warpage of the sealing molded article is sufficiently suppressed.
Symbol description
1 … first resin layer, 1a … cured product of the first resin layer, 2 … second resin layer, 2a … cured product of the second resin layer, 3 … resin sealing material, 3a … cured product of the resin sealing material, 10 … sealing film (sealing resin layer), 10a … cured product of the sealing resin layer, 20 … semiconductor chip, 30 … substrate, 40 … temporary fixing material, 50 … insulating layer, 52 … patterned insulating layer, 54 … wiring, 56 … balls, 60 … dicing cutter, 100 … sealing molded product, 200 … semiconductor device.
Claims (8)
1. A sealing film for sealing an electronic component, comprising a sealing resin layer having a first resin layer and a second resin layer, wherein the first resin layer contains a first thermosetting resin and a first inorganic filler, and the second resin layer contains a second thermosetting resin and a second inorganic filler,
the second resin layer has a sealing surface facing the electronic component side when sealing the electronic component, the second resin layer and the first resin layer are laminated in this order from the sealing surface side,
The curing rate of the first resin layer is relatively increased as compared to the curing rate of the second resin layer so that the curing shrinkage rate of the second resin layer is greater than the curing shrinkage rate of the first resin layer.
2. The sealing film according to claim 1, wherein a ratio of a cure shrinkage rate of the second resin layer to a cure shrinkage rate of the first resin layer exceeds 1 and is less than 10.
3. The sealing film according to claim 1 or 2, wherein the first thermosetting resin and the second thermosetting resin are epoxy resins that are the same as or different from each other.
4. A method of manufacturing an electronic component device, comprising:
pressing under heat the sealing resin layer of the sealing film according to any one of claims 1 to 3 and an electronic component disposed opposite to a sealing surface of the sealing resin layer, thereby embedding the electronic component in the sealing resin layer; and
and curing the sealing resin layer to form a sealing portion as a cured product of the sealing resin layer for sealing the electronic component.
5. The method of claim 4, the electronic component comprising a semiconductor chip.
6. An electronic component device, comprising:
an electronic component and a sealing part for sealing the electronic component,
The sealing portion is a cured product of the sealing resin layer of the sealing film according to any one of claims 1 to 3.
7. The electronic component device according to claim 6, the electronic component comprising a semiconductor chip.
8. The electronic component device according to claim 6, wherein the electronic component is surrounded by a cured product of the second resin layer in the sealing portion.
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| PCT/JP2018/013344 WO2018181761A1 (en) | 2017-03-31 | 2018-03-29 | Sealing film, method for manufacturing electronic component device, and electronic component device |
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