JPWO2019093494A1 - 複合銅箔 - Google Patents
複合銅箔 Download PDFInfo
- Publication number
- JPWO2019093494A1 JPWO2019093494A1 JP2019552410A JP2019552410A JPWO2019093494A1 JP WO2019093494 A1 JPWO2019093494 A1 JP WO2019093494A1 JP 2019552410 A JP2019552410 A JP 2019552410A JP 2019552410 A JP2019552410 A JP 2019552410A JP WO2019093494 A1 JPWO2019093494 A1 JP WO2019093494A1
- Authority
- JP
- Japan
- Prior art keywords
- copper foil
- composite copper
- composite
- convex portion
- plating
- 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.)
- Granted
Links
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims abstract description 114
- 239000011889 copper foil Substances 0.000 title claims abstract description 93
- 239000002131 composite material Substances 0.000 title claims abstract description 49
- 239000010949 copper Substances 0.000 claims abstract description 35
- 229910052751 metal Inorganic materials 0.000 claims abstract description 32
- 239000002184 metal Substances 0.000 claims abstract description 32
- 229910052802 copper Inorganic materials 0.000 claims abstract description 20
- 238000011282 treatment Methods 0.000 claims description 36
- 238000007747 plating Methods 0.000 claims description 26
- 238000000034 method Methods 0.000 claims description 18
- 238000004519 manufacturing process Methods 0.000 claims description 11
- 239000007864 aqueous solution Substances 0.000 claims description 9
- 229910052759 nickel Inorganic materials 0.000 claims description 9
- 239000003054 catalyst Substances 0.000 claims description 5
- 238000009713 electroplating Methods 0.000 claims description 5
- 229910052763 palladium Inorganic materials 0.000 claims description 5
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- 238000007772 electroless plating Methods 0.000 claims description 4
- 229910052737 gold Inorganic materials 0.000 claims description 4
- 229910052742 iron Inorganic materials 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 4
- 229910052697 platinum Inorganic materials 0.000 claims description 4
- 229910052709 silver Inorganic materials 0.000 claims description 4
- 229910052718 tin Inorganic materials 0.000 claims description 4
- 229910052719 titanium Inorganic materials 0.000 claims description 4
- 229910052725 zinc Inorganic materials 0.000 claims description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 230000001590 oxidative effect Effects 0.000 claims description 3
- 229910052760 oxygen Inorganic materials 0.000 claims description 3
- 239000001301 oxygen Substances 0.000 claims description 3
- 238000010586 diagram Methods 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 16
- 238000007254 oxidation reaction Methods 0.000 description 15
- 230000003647 oxidation Effects 0.000 description 14
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 13
- 230000000052 comparative effect Effects 0.000 description 11
- 238000005259 measurement Methods 0.000 description 11
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 description 10
- 239000005751 Copper oxide Substances 0.000 description 9
- 229910000431 copper oxide Inorganic materials 0.000 description 9
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 8
- 150000004032 porphyrins Chemical class 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 239000000243 solution Substances 0.000 description 6
- 230000003746 surface roughness Effects 0.000 description 6
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 5
- 239000002253 acid Substances 0.000 description 5
- 239000007800 oxidant agent Substances 0.000 description 5
- KDLHZDBZIXYQEI-UHFFFAOYSA-N palladium Substances [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 239000012790 adhesive layer Substances 0.000 description 4
- 230000006866 deterioration Effects 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 239000011734 sodium Substances 0.000 description 4
- 239000003638 chemical reducing agent Substances 0.000 description 3
- 239000008151 electrolyte solution Substances 0.000 description 3
- 239000010931 gold Substances 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Substances [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 238000007788 roughening Methods 0.000 description 3
- 229910052708 sodium Inorganic materials 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 239000011135 tin Substances 0.000 description 3
- 239000011701 zinc Substances 0.000 description 3
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 2
- 239000006087 Silane Coupling Agent Substances 0.000 description 2
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 description 2
- 238000004833 X-ray photoelectron spectroscopy Methods 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000004840 adhesive resin Substances 0.000 description 2
- 229920006223 adhesive resin Polymers 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 2
- 239000002738 chelating agent Substances 0.000 description 2
- IJOOHPMOJXWVHK-UHFFFAOYSA-N chlorotrimethylsilane Chemical compound C[Si](C)(C)Cl IJOOHPMOJXWVHK-UHFFFAOYSA-N 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000005238 degreasing Methods 0.000 description 2
- 238000005530 etching Methods 0.000 description 2
- 238000010884 ion-beam technique Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000001878 scanning electron micrograph Methods 0.000 description 2
- 229910000077 silane Inorganic materials 0.000 description 2
- UKLNMMHNWFDKNT-UHFFFAOYSA-M sodium chlorite Chemical compound [Na+].[O-]Cl=O UKLNMMHNWFDKNT-UHFFFAOYSA-M 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- BPSIOYPQMFLKFR-UHFFFAOYSA-N trimethoxy-[3-(oxiran-2-ylmethoxy)propyl]silane Chemical compound CO[Si](OC)(OC)CCCOCC1CO1 BPSIOYPQMFLKFR-UHFFFAOYSA-N 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- DCCWEYXHEXDZQW-BYPYZUCNSA-N (2s)-2-[bis(carboxymethyl)amino]butanedioic acid Chemical compound OC(=O)C[C@@H](C(O)=O)N(CC(O)=O)CC(O)=O DCCWEYXHEXDZQW-BYPYZUCNSA-N 0.000 description 1
- VCVKIIDXVWEWSZ-YFKPBYRVSA-N (2s)-2-[bis(carboxymethyl)amino]pentanedioic acid Chemical compound OC(=O)CC[C@@H](C(O)=O)N(CC(O)=O)CC(O)=O VCVKIIDXVWEWSZ-YFKPBYRVSA-N 0.000 description 1
- WYTZZXDRDKSJID-UHFFFAOYSA-N (3-aminopropyl)triethoxysilane Chemical compound CCO[Si](OCC)(OCC)CCCN WYTZZXDRDKSJID-UHFFFAOYSA-N 0.000 description 1
- AEQDJSLRWYMAQI-UHFFFAOYSA-N 2,3,9,10-tetramethoxy-6,8,13,13a-tetrahydro-5H-isoquinolino[2,1-b]isoquinoline Chemical compound C1CN2CC(C(=C(OC)C=C3)OC)=C3CC2C2=C1C=C(OC)C(OC)=C2 AEQDJSLRWYMAQI-UHFFFAOYSA-N 0.000 description 1
- OXYZDRAJMHGSMW-UHFFFAOYSA-N 3-chloropropyl(trimethoxy)silane Chemical compound CO[Si](OC)(OC)CCCCl OXYZDRAJMHGSMW-UHFFFAOYSA-N 0.000 description 1
- SJECZPVISLOESU-UHFFFAOYSA-N 3-trimethoxysilylpropan-1-amine Chemical compound CO[Si](OC)(OC)CCCN SJECZPVISLOESU-UHFFFAOYSA-N 0.000 description 1
- UUEWCQRISZBELL-UHFFFAOYSA-N 3-trimethoxysilylpropane-1-thiol Chemical compound CO[Si](OC)(OC)CCCS UUEWCQRISZBELL-UHFFFAOYSA-N 0.000 description 1
- XDLMVUHYZWKMMD-UHFFFAOYSA-N 3-trimethoxysilylpropyl 2-methylprop-2-enoate Chemical compound CO[Si](OC)(OC)CCCOC(=O)C(C)=C XDLMVUHYZWKMMD-UHFFFAOYSA-N 0.000 description 1
- VXEGSRKPIUDPQT-UHFFFAOYSA-N 4-[4-(4-methoxyphenyl)piperazin-1-yl]aniline Chemical compound C1=CC(OC)=CC=C1N1CCN(C=2C=CC(N)=CC=2)CC1 VXEGSRKPIUDPQT-UHFFFAOYSA-N 0.000 description 1
- KWSLGOVYXMQPPX-UHFFFAOYSA-N 5-[3-(trifluoromethyl)phenyl]-2h-tetrazole Chemical compound FC(F)(F)C1=CC=CC(C2=NNN=N2)=C1 KWSLGOVYXMQPPX-UHFFFAOYSA-N 0.000 description 1
- OMIHGPLIXGGMJB-UHFFFAOYSA-N 7-oxabicyclo[4.1.0]hepta-1,3,5-triene Chemical compound C1=CC=C2OC2=C1 OMIHGPLIXGGMJB-UHFFFAOYSA-N 0.000 description 1
- NVEYHJNJWCDNIJ-UHFFFAOYSA-N CO[Si](CCCNC(=O)N)(OC)OC.CO[Si](CCCNC(=O)N)(OC)OC Chemical compound CO[Si](CCCNC(=O)N)(OC)OC.CO[Si](CCCNC(=O)N)(OC)OC NVEYHJNJWCDNIJ-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 description 1
- 229910016847 F2-WS Inorganic materials 0.000 description 1
- FSVCELGFZIQNCK-UHFFFAOYSA-N N,N-bis(2-hydroxyethyl)glycine Chemical compound OCCN(CCO)CC(O)=O FSVCELGFZIQNCK-UHFFFAOYSA-N 0.000 description 1
- 229910018104 Ni-P Inorganic materials 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 229910018536 Ni—P Inorganic materials 0.000 description 1
- IIFGCAJBLSOVSP-UHFFFAOYSA-N OCCN(CC(=O)O)CC(=O)O.[Na].[Na] Chemical compound OCCN(CC(=O)O)CC(=O)O.[Na].[Na] IIFGCAJBLSOVSP-UHFFFAOYSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 239000002033 PVDF binder Substances 0.000 description 1
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 description 1
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 1
- 239000005708 Sodium hypochlorite Substances 0.000 description 1
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 description 1
- KXJLGCBCRCSXQF-UHFFFAOYSA-N [diacetyloxy(ethyl)silyl] acetate Chemical compound CC(=O)O[Si](CC)(OC(C)=O)OC(C)=O KXJLGCBCRCSXQF-UHFFFAOYSA-N 0.000 description 1
- PDIZYYQQWUOPPK-UHFFFAOYSA-N acetic acid;2-(methylamino)acetic acid Chemical compound CC(O)=O.CC(O)=O.CNCC(O)=O PDIZYYQQWUOPPK-UHFFFAOYSA-N 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 239000011149 active material Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 229950003476 aminothiazole Drugs 0.000 description 1
- -1 aminothiazole compound Chemical class 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 150000001565 benzotriazoles Chemical class 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 229910052797 bismuth Inorganic materials 0.000 description 1
- 239000004327 boric acid Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- JEZFASCUIZYYEV-UHFFFAOYSA-N chloro(triethoxy)silane Chemical compound CCO[Si](Cl)(OCC)OCC JEZFASCUIZYYEV-UHFFFAOYSA-N 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 230000001143 conditioned effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 150000004696 coordination complex Chemical class 0.000 description 1
- LIKFHECYJZWXFJ-UHFFFAOYSA-N dimethyldichlorosilane Chemical compound C[Si](C)(Cl)Cl LIKFHECYJZWXFJ-UHFFFAOYSA-N 0.000 description 1
- AXZAYXJCENRGIM-UHFFFAOYSA-J dipotassium;tetrabromoplatinum(2-) Chemical compound [K+].[K+].[Br-].[Br-].[Br-].[Br-].[Pt+2] AXZAYXJCENRGIM-UHFFFAOYSA-J 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- WOXXJEVNDJOOLV-UHFFFAOYSA-N ethenyl-tris(2-methoxyethoxy)silane Chemical compound COCCO[Si](OCCOC)(OCCOC)C=C WOXXJEVNDJOOLV-UHFFFAOYSA-N 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 238000005246 galvanizing Methods 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- TVZISJTYELEYPI-UHFFFAOYSA-N hypodiphosphoric acid Chemical class OP(O)(=O)P(O)(O)=O TVZISJTYELEYPI-UHFFFAOYSA-N 0.000 description 1
- NBZBKCUXIYYUSX-UHFFFAOYSA-N iminodiacetic acid Chemical compound OC(=O)CNCC(O)=O NBZBKCUXIYYUSX-UHFFFAOYSA-N 0.000 description 1
- 238000009616 inductively coupled plasma Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 229910052741 iridium Inorganic materials 0.000 description 1
- GKOZUEZYRPOHIO-UHFFFAOYSA-N iridium atom Chemical compound [Ir] GKOZUEZYRPOHIO-UHFFFAOYSA-N 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000002923 metal particle Substances 0.000 description 1
- 239000005055 methyl trichlorosilane Substances 0.000 description 1
- JLUFWMXJHAVVNN-UHFFFAOYSA-N methyltrichlorosilane Chemical compound C[Si](Cl)(Cl)Cl JLUFWMXJHAVVNN-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- PHQOGHDTIVQXHL-UHFFFAOYSA-N n'-(3-trimethoxysilylpropyl)ethane-1,2-diamine Chemical compound CO[Si](OC)(OC)CCCNCCN PHQOGHDTIVQXHL-UHFFFAOYSA-N 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- MSRJTTSHWYDFIU-UHFFFAOYSA-N octyltriethoxysilane Chemical compound CCCCCCCC[Si](OCC)(OCC)OCC MSRJTTSHWYDFIU-UHFFFAOYSA-N 0.000 description 1
- 229910052762 osmium Inorganic materials 0.000 description 1
- SYQBFIAQOQZEGI-UHFFFAOYSA-N osmium atom Chemical compound [Os] SYQBFIAQOQZEGI-UHFFFAOYSA-N 0.000 description 1
- PIBWKRNGBLPSSY-UHFFFAOYSA-L palladium(II) chloride Chemical compound Cl[Pd]Cl PIBWKRNGBLPSSY-UHFFFAOYSA-L 0.000 description 1
- 235000021317 phosphate Nutrition 0.000 description 1
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 1
- VKJKEPKFPUWCAS-UHFFFAOYSA-M potassium chlorate Chemical compound [K+].[O-]Cl(=O)=O VKJKEPKFPUWCAS-UHFFFAOYSA-M 0.000 description 1
- 229910001487 potassium perchlorate Inorganic materials 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 229910052703 rhodium Inorganic materials 0.000 description 1
- 239000010948 rhodium Substances 0.000 description 1
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 description 1
- 229910052707 ruthenium Inorganic materials 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 230000001235 sensitizing effect Effects 0.000 description 1
- 239000005049 silicon tetrachloride Substances 0.000 description 1
- 239000010944 silver (metal) Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 229960002218 sodium chlorite Drugs 0.000 description 1
- 239000000176 sodium gluconate Substances 0.000 description 1
- 229940005574 sodium gluconate Drugs 0.000 description 1
- 235000012207 sodium gluconate Nutrition 0.000 description 1
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 description 1
- 229910001379 sodium hypophosphite Inorganic materials 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 235000000346 sugar Nutrition 0.000 description 1
- 150000008163 sugars Chemical class 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- HPGGPRDJHPYFRM-UHFFFAOYSA-J tin(iv) chloride Chemical compound Cl[Sn](Cl)(Cl)Cl HPGGPRDJHPYFRM-UHFFFAOYSA-J 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
- ZNOCGWVLWPVKAO-UHFFFAOYSA-N trimethoxy(phenyl)silane Chemical compound CO[Si](OC)(OC)C1=CC=CC=C1 ZNOCGWVLWPVKAO-UHFFFAOYSA-N 0.000 description 1
- ASTWEMOBIXQPPV-UHFFFAOYSA-K trisodium;phosphate;dodecahydrate Chemical compound O.O.O.O.O.O.O.O.O.O.O.O.[Na+].[Na+].[Na+].[O-]P([O-])([O-])=O ASTWEMOBIXQPPV-UHFFFAOYSA-K 0.000 description 1
- 238000001771 vacuum deposition Methods 0.000 description 1
- 239000002966 varnish Substances 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D7/00—Electroplating characterised by the article coated
- C25D7/06—Wires; Strips; Foils
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
- C23C28/30—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer
- C23C28/34—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one inorganic non-metallic material layer, e.g. metal carbide, nitride, boride, silicide layer and their mixtures, enamels, phosphates and sulphates
- C23C28/345—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one inorganic non-metallic material layer, e.g. metal carbide, nitride, boride, silicide layer and their mixtures, enamels, phosphates and sulphates with at least one oxide layer
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/14—Cleaning or pickling metallic material with solutions or molten salts with alkaline solutions
- C23G1/20—Other heavy metals
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
- C23C18/1601—Process or apparatus
- C23C18/1633—Process of electroless plating
- C23C18/1635—Composition of the substrate
- C23C18/1637—Composition of the substrate metallic substrate
-
- C—CHEMISTRY; METALLURGY
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Abstract
Description
)が開発されている。また、絶縁基板上の銅導体パターンの表面を粗化し、酸化銅層を形成した表面上に、離散的に分布する金属粒子を有するめっき膜を形成する方法(特開2000−151096号公報)が開発されている。
記銅箔表面が溶解剤で溶解されてもよい。第2の工程において、前記めっき処理が触媒を用いた無電解めっきであってもよい。第2の工程において、前記めっき処理が電解めっきであってもよい。
本出願は、2017年11月10日付で出願した日本国特許出願2017−217777及び2018年3月30日付で出願した日本国特許出願2018−069608及びに基づく優先権を主張するものであり、当該基礎出願を引用することにより、本明細書に含めるものとする。
本発明の一実施態様は、銅箔の少なくとも一部の表面に、銅以外の金属層が形成されている複合銅箔である。この複合銅箔には、少なくとも一部の金属層の表面に凸部がある。
量%以上であることがより好ましく、99重量%以上であることがさらに好ましい。また、Cuの原子組成の割合が40%である深さにおけるCu/O比は、0.9以上であることが好ましく、2以上であることがより好ましく、5以上であることがさらに好ましい。所定の深さにおける全金属量に対するCuの割合は、例えば、イオンスパッタリングとX線光電子分光法(XPS)を用いて測定することができる。
本発明の一実施態様は、複合銅箔の製造方法であって、銅箔表面を酸化する第1の工程と、酸化した銅表面にめっき処理する第2の工程と、を含む複合銅箔の製造方法である。
ましく、1〜10分であることがより好ましい。
厚み:18μm)のマット面を用いた。以下に、その工程の詳細を説明する。
1.2g/Lの水酸化ナトリウム水溶液で40℃、1分間、プレコンディショニングを
行った。これは、酸化処理のムラを軽減することを目的とした脱脂洗浄のためである。なお、比較例2については、アルカリ処理を行わなかった。
アルカリ処理を行った銅箔を、酸化処理用水溶液(NaClO2 130g/L-Na
OH 12g/L)で45℃、1分間、酸化処理を行った。なお、比較例2については、酸化処理を行わなかった。これらの処理後、銅箔を水洗した。
酸化処理を行った銅箔に対し、実施例1〜3については、ニッケルめっき用電解液(スルファミン酸ニッケル470g/L−ホウ酸40g/L)を用いて電解めっきを施した。
実施例5については、クロムめっき用電解液(無水クロム酸100g/L−硫酸1g/L)を用いて電解めっきを施した。実施例6については、亜鉛めっき用電解液(酸化亜鉛10g/L−水酸化ナトリウム115g/L−9500A 5ml/L(日本表面化学株式会社製)-9500B 0.5ml/L(日本表面化学株式会社製)−ハイパーソフト10ml/L(日本表面化学株式会社製))を用いて電解めっきを施した。温度、時間、電流密度などの条件については、表1に記載の通りである。比較例1については、めっき処理の工程は一切行わなかった。実施例4については、センシタイジング溶液(1.0g/L塩化スズ、0.5〜3.0mL/L塩酸)で30℃、1分間、アクティベーション溶液(100mg/L塩化パラジウム、0.1mL/L塩酸)で30℃、1分間処理を行った後、Ni−Pめっき溶液(ブルーシューマー、日本カニゼン社)を用いて、90℃、5秒間無電解めっきを施した。
実施例7では、実施例2で得られた銅箔に対し、シランカップリング剤(信越シリコーン製KBM−803)1wt%水溶液に室温で1分間浸漬後、70℃の乾燥機内で1分間乾燥して作成した銅箔を用いた。
実施例1〜6及び比較例1〜2で得られた複合銅箔の凸部の高さ及び数、そして表面粗さを測定した。具体的には、共焦点走査電子顕微鏡コントローラ MC−1000A(レーザーテック株式会社製)を用いて測定した。走査型電子顕微鏡(SEM)画像において、凸部を挟んで隣り合う凹部の極小点を結んだ線分の中点と、凹部の間にある凸部の極大点との距離を凸部の高さとした。5個の独立した場所についてのSEM画像を用い、1画像につき3箇所測定して、その平均値を計算し、凸部の平均の高さとした。次に、5個のSEM画像で、3.8μm当たり、高さが50nm以上の凸部の数を数え、5個の平均値を算出した。表面粗さは、算術平均粗さ(Ra)として算出した。走査電子顕微鏡の観察結果を図1に、各測定結果を表2に示す。なお、Raの値が低いほど、銅箔表面の表面粗さが小さいことを示す。
めっきを施した実施例1〜6の銅箔について、Cu以外の金属量を測定した。具体的には、めっきを施した銅箔とめっきを施していない銅箔を3cm角に切断し、それぞれ12%硝酸水溶液に溶かして、高周波誘導結合プラズマ(ICP)分析法によって銅箔片面あたりの金属量を測定し、その差をCu以外の金属量とした。その結果を表2に示す。
実施例1〜7及び比較例1〜2の各銅箔について、積層後のピール強度及び熱処理後のピール強度を測定した。まず、各銅箔に対し、プリプレグ(R5670KJ(パナソニック株式会社製)を積層し、真空高圧プレス機を用いて真空中で210℃30分間保持することにより、測定試料(Initial)を得た。熱に対する耐性を調べるため、177℃のオーブンに10日間投入し、測定試料(耐熱試験)を得た。これらの測定試料に対して90°剥離試験(日本工業規格(JIS)C5016)によりピール強度(kgf/cm)を求めた。また、実施例8では、実施例2で得られた銅箔に対し、箔とプリプレグとの間に、接着樹脂層としてフェニレンエーテルオリゴマーおよびエラストマーを主成分とする接着フィルム(ナミックス(株)製、NC0207)を挟み、真空高圧プレス機を用いて真空中で210℃30分間保持することにより測定試料(Initial)を得て、さらに、同様の条件で熱処理後のピール強度を測定した。ピール強度が大きいほど、プリプレグと銅箔の密着性が高いことを示す。その結果を表3に示す。
100 − ((耐熱試験後のピール強度 / Initialsのピール強度)× 100)
(7)密着性の測定 II 浸み出しの判定
実施例1〜6及び比較例1〜2の各銅箔について、酸に対する耐性を調べるため、積層後の銅箔をHCl水溶液(4N)に60℃、90分間浸漬し、測定試料を得、90°剥離試験(日本工業規格(JIS)C5016)を行った。この時に、銅箔側の接着面において、染み出しによる色の変化の有無を調べた。その結果を表3に示す。
Claims (13)
- 銅箔の少なくとも一部の表面に、銅以外の金属層が形成されている複合銅箔であって、
少なくとも一部の前記複合銅箔の表面に凸部があり、
前記複合銅箔の断面において、前記凸部の高さが10nm以上1000nm以下である、複合銅箔。 - 深さ6nmにおける全金属量に対するCuの割合が80%以下であり、酸素を含まない深さにおける全金属量に対するCuの割合が90%以上である、請求項1に記載の複合銅箔。
- 前記凸部の高さが50nm以上500nm以下である、請求項1または2に記載の複合銅箔。
- 前記複合銅箔の断面において、高さ50nm以上の凸部が3.8μm当たり平均15個以上100個以下である、請求項1〜3のいずれか1項に記載の複合銅箔。
- 前記凸部の高さが、走査電子顕微鏡による断面の撮影像において、凸部の両側の凹部の極小点を結んだ線分について、その中点と凸部の極大点との距離として測定される、請求項1〜4に記載の物体。
- 前記金属層が、一様で粒子がない、請求項1〜5のいずれか1項に記載の複合銅箔。
- Cuの割合が40atom%である深さにおけるCu/O比が0.9以上である、請求項1〜6のいずれか1項に記載の複合銅箔。
- 前記銅以外の金属が、Sn、Ag、Zn、Al、Ti、Bi、Cr、Fe、Co、Ni、Pd、AuおよびPtからなる群から選ばれた少なくとも一種の金属である、請求項1〜7のいずれか1項に記載の複合銅箔。
- 銅箔表面を酸化する第1の工程と、
酸化した前記銅表面にめっき処理する第2の工程と、
を含む複合銅箔の製造方法。 - 第1の工程の前に、アルカリ水溶液を用いてアルカリ処理が行われる、請求項9に記載の複合銅箔の製造方法。
- 第1の工程において、酸化された前記銅箔表面が溶解剤で溶解される、請求項9または10に記載の複合銅箔の製造方法。
- 第2の工程において、前記めっき処理が触媒を用いた無電解めっきである、請求項9〜11のいずれか1項に記載の複合銅箔の製造方法。
- 第2の工程において、前記めっき処理が電解めっきである、請求項9〜12のいずれか1項に記載の複合銅箔の製造方法。
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