JPWO2016114121A1 - セラミック基板の製造方法、セラミック基板及び銀系導体材料 - Google Patents
セラミック基板の製造方法、セラミック基板及び銀系導体材料 Download PDFInfo
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- JPWO2016114121A1 JPWO2016114121A1 JP2016542286A JP2016542286A JPWO2016114121A1 JP WO2016114121 A1 JPWO2016114121 A1 JP WO2016114121A1 JP 2016542286 A JP2016542286 A JP 2016542286A JP 2016542286 A JP2016542286 A JP 2016542286A JP WO2016114121 A1 JPWO2016114121 A1 JP WO2016114121A1
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- Prior art keywords
- silver
- conductor material
- manufacturing
- disilicide
- ceramic substrate
- 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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- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 title claims abstract description 99
- 229910052709 silver Inorganic materials 0.000 title claims abstract description 92
- 239000004332 silver Substances 0.000 title claims abstract description 92
- 239000004020 conductor Substances 0.000 title claims abstract description 87
- 239000000463 material Substances 0.000 title claims abstract description 64
- 239000000919 ceramic Substances 0.000 title claims abstract description 62
- 239000000758 substrate Substances 0.000 title claims abstract description 54
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title claims description 27
- 229910052751 metal Inorganic materials 0.000 claims abstract description 76
- 239000002184 metal Substances 0.000 claims abstract description 76
- 238000010304 firing Methods 0.000 claims abstract description 41
- 229910021332 silicide Inorganic materials 0.000 claims abstract description 38
- FVBUAEGBCNSCDD-UHFFFAOYSA-N silicide(4-) Chemical compound [Si-4] FVBUAEGBCNSCDD-UHFFFAOYSA-N 0.000 claims abstract description 36
- 239000011521 glass Substances 0.000 claims abstract description 11
- 230000008569 process Effects 0.000 claims description 6
- QYEXBYZXHDUPRC-UHFFFAOYSA-N B#[Ti]#B Chemical compound B#[Ti]#B QYEXBYZXHDUPRC-UHFFFAOYSA-N 0.000 claims description 4
- 229910033181 TiB2 Inorganic materials 0.000 claims description 4
- YXTPWUNVHCYOSP-UHFFFAOYSA-N bis($l^{2}-silanylidene)molybdenum Chemical compound [Si]=[Mo]=[Si] YXTPWUNVHCYOSP-UHFFFAOYSA-N 0.000 claims description 4
- DFJQEGUNXWZVAH-UHFFFAOYSA-N bis($l^{2}-silanylidene)titanium Chemical compound [Si]=[Ti]=[Si] DFJQEGUNXWZVAH-UHFFFAOYSA-N 0.000 claims description 4
- JEUVAEBWTRCMTB-UHFFFAOYSA-N boron;tantalum Chemical compound B#[Ta]#B JEUVAEBWTRCMTB-UHFFFAOYSA-N 0.000 claims description 4
- 229910021358 chromium disilicide Inorganic materials 0.000 claims description 4
- 229910052746 lanthanum Inorganic materials 0.000 claims description 4
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 claims description 4
- 229910021343 molybdenum disilicide Inorganic materials 0.000 claims description 4
- ZRBFEDMQRDRUDG-UHFFFAOYSA-N silicon hexaboride Chemical compound B12B3[Si]45B3B2B4B51 ZRBFEDMQRDRUDG-UHFFFAOYSA-N 0.000 claims description 4
- 229910021352 titanium disilicide Inorganic materials 0.000 claims description 4
- MANYRMJQFFSZKJ-UHFFFAOYSA-N bis($l^{2}-silanylidene)tantalum Chemical compound [Si]=[Ta]=[Si] MANYRMJQFFSZKJ-UHFFFAOYSA-N 0.000 claims description 3
- GJIKIPCNQLUSQC-UHFFFAOYSA-N bis($l^{2}-silanylidene)zirconium Chemical compound [Si]=[Zr]=[Si] GJIKIPCNQLUSQC-UHFFFAOYSA-N 0.000 claims description 3
- WQJQOUPTWCFRMM-UHFFFAOYSA-N tungsten disilicide Chemical compound [Si]#[W]#[Si] WQJQOUPTWCFRMM-UHFFFAOYSA-N 0.000 claims description 3
- 229910021353 zirconium disilicide Inorganic materials 0.000 claims description 3
- 239000000654 additive Substances 0.000 description 54
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- 239000010410 layer Substances 0.000 description 35
- 238000009792 diffusion process Methods 0.000 description 29
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- 229910004298 SiO 2 Inorganic materials 0.000 description 8
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- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 7
- 238000001878 scanning electron micrograph Methods 0.000 description 7
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 6
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 6
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- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 3
- 229910019974 CrSi Inorganic materials 0.000 description 3
- 229910008484 TiSi Inorganic materials 0.000 description 3
- 238000002845 discoloration Methods 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 239000003960 organic solvent Substances 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- MQIUGAXCHLFZKX-UHFFFAOYSA-N Di-n-octyl phthalate Natural products CCCCCCCCOC(=O)C1=CC=CC=C1C(=O)OCCCCCCCC MQIUGAXCHLFZKX-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 229910016006 MoSi Inorganic materials 0.000 description 2
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- BJQHLKABXJIVAM-UHFFFAOYSA-N bis(2-ethylhexyl) phthalate Chemical compound CCCCC(CC)COC(=O)C1=CC=CC=C1C(=O)OCC(CC)CCCC BJQHLKABXJIVAM-UHFFFAOYSA-N 0.000 description 2
- 239000005388 borosilicate glass Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 2
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- 230000009477 glass transition Effects 0.000 description 2
- 229910052758 niobium Inorganic materials 0.000 description 2
- 239000010955 niobium Substances 0.000 description 2
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
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- 239000004014 plasticizer Substances 0.000 description 2
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- OFEAOSSMQHGXMM-UHFFFAOYSA-N 12007-10-2 Chemical compound [W].[W]=[B] OFEAOSSMQHGXMM-UHFFFAOYSA-N 0.000 description 1
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- 239000001856 Ethyl cellulose Substances 0.000 description 1
- ZZSNKZQZMQGXPY-UHFFFAOYSA-N Ethyl cellulose Chemical compound CCOCC1OC(OC)C(OCC)C(OCC)C1OC1C(O)C(O)C(OC)C(CO)O1 ZZSNKZQZMQGXPY-UHFFFAOYSA-N 0.000 description 1
- 229910005329 FeSi 2 Inorganic materials 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- TWRSDLOICOIGRH-UHFFFAOYSA-N [Si].[Si].[Hf] Chemical compound [Si].[Si].[Hf] TWRSDLOICOIGRH-UHFFFAOYSA-N 0.000 description 1
- WUOACPNHFRMFPN-UHFFFAOYSA-N alpha-terpineol Chemical compound CC1=CCC(C(C)(C)O)CC1 WUOACPNHFRMFPN-UHFFFAOYSA-N 0.000 description 1
- 150000001462 antimony Chemical class 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- JRACIMOSEUMYIP-UHFFFAOYSA-N bis($l^{2}-silanylidene)iron Chemical compound [Si]=[Fe]=[Si] JRACIMOSEUMYIP-UHFFFAOYSA-N 0.000 description 1
- UHPOHYZTPBGPKO-UHFFFAOYSA-N bis(boranylidyne)chromium Chemical compound B#[Cr]#B UHPOHYZTPBGPKO-UHFFFAOYSA-N 0.000 description 1
- LGLOITKZTDVGOE-UHFFFAOYSA-N boranylidynemolybdenum Chemical compound [Mo]#B LGLOITKZTDVGOE-UHFFFAOYSA-N 0.000 description 1
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000000306 component Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- SQIFACVGCPWBQZ-UHFFFAOYSA-N delta-terpineol Natural products CC(C)(O)C1CCC(=C)CC1 SQIFACVGCPWBQZ-UHFFFAOYSA-N 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004455 differential thermal analysis Methods 0.000 description 1
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 description 1
- 229920001249 ethyl cellulose Polymers 0.000 description 1
- 235000019325 ethyl cellulose Nutrition 0.000 description 1
- MELCCCHYSRGEEL-UHFFFAOYSA-N hafnium diboride Chemical compound [Hf]1B=B1 MELCCCHYSRGEEL-UHFFFAOYSA-N 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229910052863 mullite Inorganic materials 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007650 screen-printing Methods 0.000 description 1
- 239000011863 silicon-based powder Substances 0.000 description 1
- RCKBMGHMPOIFND-UHFFFAOYSA-N sulfanylidene(sulfanylidenegallanylsulfanyl)gallane Chemical compound S=[Ga]S[Ga]=S RCKBMGHMPOIFND-UHFFFAOYSA-N 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
- 229940116411 terpineol Drugs 0.000 description 1
- 238000002411 thermogravimetry Methods 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/10—Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern
- H05K3/12—Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern using thick film techniques, e.g. printing techniques to apply the conductive material or similar techniques for applying conductive paste or ink patterns
- H05K3/1283—After-treatment of the printed patterns, e.g. sintering or curing methods
- H05K3/1291—Firing or sintering at relative high temperatures for patterns on inorganic boards, e.g. co-firing of circuits on green ceramic sheets
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- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/40—Forming printed elements for providing electric connections to or between printed circuits
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
- B32B9/005—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising one layer of ceramic material, e.g. porcelain, ceramic tile
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C10/00—Devitrified glass ceramics, i.e. glass ceramics having a crystalline phase dispersed in a glassy phase and constituting at least 50% by weight of the total composition
- C03C10/0054—Devitrified glass ceramics, i.e. glass ceramics having a crystalline phase dispersed in a glassy phase and constituting at least 50% by weight of the total composition containing PbO, SnO2, B2O3
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- C—CHEMISTRY; METALLURGY
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- C03C4/00—Compositions for glass with special properties
- C03C4/14—Compositions for glass with special properties for electro-conductive glass
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
- C04B35/6303—Inorganic additives
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/12—Mountings, e.g. non-detachable insulating substrates
- H01L23/14—Mountings, e.g. non-detachable insulating substrates characterised by the material or its electrical properties
- H01L23/15—Ceramic or glass substrates
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- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
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- H05K1/02—Details
- H05K1/0296—Conductive pattern lay-out details not covered by sub groups H05K1/02 - H05K1/0295
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- H05K1/02—Details
- H05K1/03—Use of materials for the substrate
- H05K1/0306—Inorganic insulating substrates, e.g. ceramic, glass
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- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/09—Use of materials for the conductive, e.g. metallic pattern
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- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/09—Use of materials for the conductive, e.g. metallic pattern
- H05K1/092—Dispersed materials, e.g. conductive pastes or inks
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- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/10—Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern
- H05K3/12—Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern using thick film techniques, e.g. printing techniques to apply the conductive material or similar techniques for applying conductive paste or ink patterns
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/22—Secondary treatment of printed circuits
- H05K3/28—Applying non-metallic protective coatings
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- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/22—Secondary treatment of printed circuits
- H05K3/28—Applying non-metallic protective coatings
- H05K3/285—Permanent coating compositions
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- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/30—Assembling printed circuits with electric components, e.g. with resistor
- H05K3/32—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits
- H05K3/321—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits by conductive adhesives
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- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/40—Forming printed elements for providing electric connections to or between printed circuits
- H05K3/4038—Through-connections; Vertical interconnect access [VIA] connections
- H05K3/4053—Through-connections; Vertical interconnect access [VIA] connections by thick-film techniques
- H05K3/4061—Through-connections; Vertical interconnect access [VIA] connections by thick-film techniques for via connections in inorganic insulating substrates
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- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/46—Manufacturing multilayer circuits
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- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/46—Manufacturing multilayer circuits
- H05K3/4644—Manufacturing multilayer circuits by building the multilayer layer by layer, i.e. build-up multilayer circuits
- H05K3/4664—Adding a circuit layer by thick film methods, e.g. printing techniques or by other techniques for making conductive patterns by using pastes, inks or powders
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/20—Properties of the layers or laminate having particular electrical or magnetic properties, e.g. piezoelectric
- B32B2307/202—Conductive
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- C—CHEMISTRY; METALLURGY
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- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C2204/00—Glasses, glazes or enamels with special properties
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- C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
- C04B2237/30—Composition of layers of ceramic laminates or of ceramic or metallic articles to be joined by heating, e.g. Si substrates
- C04B2237/40—Metallic
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Abstract
Description
図1は、本発明の一実施形態としてのLTCC基板10の構成を示す概略図である。セラミック基板であるLTCC基板10は、例えば、コンピューターや通信機器等で用いられる電子部品や、高周波モジュール、ICパッケージ、配線基板などに用いられる。LTCC基板10は、複数のセラミック絶縁層11が積層された多層構造を有している。セラミック絶縁層11は、焼成温度が1000℃以下である低温焼成によって生成されるセラミック層である。
サンプルS01〜S03,S05〜S12,S18,T01,T03については、SiO2−B2O3−CaO系のガラスとアルミナ(Al2O3)とを含むグリーンシートを作製した。また、サンプルS13〜S15,S17,T02については、SiO2−CaO−BaO−MgO系のガラスとアルミナ(Al2O3)とを含むグリーンシートを作製した。
(1)シリカ(SiO2)やアルミナ(Al2O3)、ホウ酸(H3BO3)を主成分とするホウケイ酸系ガラス粉末と、アルミナ粉末と、を体積比で60:40、総量で1kg、アルミナ製ポットに投入した。
(2)当該アルミナ製ポットに、さらに、アクリル樹脂を120gと、溶剤であるメチルエチルケトン(MEK)と、可塑剤であるフタル酸ジオクチル(DOP)と、を所望のスラリー粘度やシート強度が確保できるだけの量を投入した。
(3)上記材料を5時間混合してセラミックスラリーを得た。
(4)上記セラミックスラリーを用いて、ドクターブレード法により、厚み0.15mmのグリーンシートを作製した。
(1)サンプルS01〜S17(欠番:S04,S16)用の導体ペースト
以下の無機成分と、ワニス成分と、添加材と、を3本ロールミルを用いて混練して、サンプルS01〜S17用の導体ペーストを作製した。
・無機成分:銀粉末、ホウケイ酸系ガラス粉末
・ワニス成分:エチルセルロース樹脂、ターピネオール溶剤
・添加材:LaB6,SiB6,TiB2,TaB2,ZrSi2,TiSi2,WSi2,CrSi2,MoSi2,TaSi2のうちのいずれか一つ
導体ペーストの無機成分中における添加材の含有率は、サンプルS01〜S03,S05〜S10,S13〜S15用については15体積%とし、サンプルS11,S17用については9体積%とし、サンプルS12用については3体積%とした。なお、表中の酸化温度は、TG−DTA法による測定値である。
(2)サンプルS18用の導体ペースト
無機成分である銀粉末の表面を、添加材であるSiB6によってコーティングした後に、上記の無機成分と、ワニス成分と、を3本ロールミルを用いて混練してサンプルS18用の導体ペーストを作製した。導体ペースト中における添加材の含有率は15体積%とした。
(3)サンプルT01〜T03用の導体ペースト
サンプルT01,T02用の導体ペーストは、添加材を添加しなかった点以外は、上記のサンプルS01〜S17(欠番:S04,S16)用の導体ペーストと同様な方法で作製した。サンプルT03用の導体は、添加材として金属ホウ化物や金属ケイ化物ではなく、SiO2を添加した点以外は、上記のサンプルS01〜S17(欠番:S04,S16)用の導体ペーストと同様な方法で作製した。
(1)グリーンシートにビアを設け、導電ペーストを充填し、グリーンシートの表面に、導体ペーストによって配線パターンを形成した。配線パターンが形成されたグリーンシートを積層して未焼成積層体を作製した。
(2)各サンプルT1〜T8の未焼成積層体を焼成した。SiO2−B2O3−CaO系のグリーンシートを用いているサンプルS01〜S03,S05〜S12,S18,T01,T03については、焼成温度を約850℃とした。また、SiO2−CaO−BaO−MgO系のグリーンシートを用いているサンプルS13〜S15,S17,T02については、焼成温度を約900℃とした。いずれのサンプルS01〜S18(欠番:S04,S16),T01〜T03についても焼成時間は約60分とした。
B1.変形例1:
上記実施形態では、導体ペーストに添加される添加材として、一種類の金属ホウ化物または一種類の金属ケイ化物のいずれかが添加されている。これに対して、導体ペーストには、金属ホウ化物と金属ケイ化物の両方が添加材として添加されても良い。また、複数種類の添加材として金属ホウ化物が組み合わされて添加されても良いし、複数種類の金属ケイ化物が添加材として組み合わされて添加されても良い。あるいは、一種類または複数種類の金属ホウ化物が一種類または複数種類の金属ケイ化物と組み合わされて添加材として添加されても良い。
上記実施形態では、LTCC基板の製造工程において、銀系導体材料である導体ペーストに、金属ホウ化物または金属ケイ化物のうちの少なくとも一つが添加材として添加されている。これに対して、LTCC基板以外のセラミック基板の製造工程において、銀系導体材料に、前記の添加材が添加されても良い。例えば、焼成温度が1000℃以上のセラミック基板の製造工程において前記の添加材が添加されても良い。また、金属ホウ化物または金属ケイ化物のうちの少なくとも一つが添加されている銀系導体材料はペースト状でなくても良く、例えば、粉末状であっても良い。
上記実施形態では、グリーンシートの作製にあたり、無機フィラーとしてアルミナを用いている。これに対して、グリーンシートの作製に用いられる無機フィラーとしては、アルミナ以外の材料が用いられても良い。無機フィラーとしては、例えば、ムライトを用いることが可能である。
11…セラミック絶縁層
12…ビア電極
13…内層電極
14…外部電極
(1)グリーンシートにビアを設け、導電ペーストを充填し、グリーンシートの表面に、導体ペーストによって配線パターンを形成した。配線パターンが形成されたグリーンシートを積層して未焼成積層体を作製した。
(2)各サンプルS01〜S18(欠番:S04,S16),T01〜T03の未焼成積層体を焼成した。SiO2−B2O3−CaO系のグリーンシートを用いているサンプルS01〜S03,S05〜S12,S18,T01,T03については、焼成温度を約850℃とした。また、SiO2−CaO−BaO−MgO系のグリーンシートを用いているサンプルS13〜S15,S17,T02については、焼成温度を約900℃とした。いずれのサンプルS01〜S18(欠番:S04,S16),T01〜T03についても焼成時間は約60分とした。
Claims (7)
- ガラスを含むセラミック基板の製造方法において、
未焼成の銀系導体材料を未焼成のセラミック層に配置して焼成する焼成工程を備え、
前記未焼成の銀系導体材料は、金属ホウ化物または金属ケイ化物のうちの少なくとも一つを含有することを特徴とする、製造方法。 - 請求項1に記載の製造方法において、
前記金属ホウ化物は、六ホウ化ランタン、六ホウ化ケイ素、二ホウ化チタン、二ホウ化タンタル、のうちの少なくとも一つを含む、製造方法。 - 請求項1または請求項2に記載の製造方法において、
前記金属ケイ化物は、二ケイ化チタン、二ケイ化ジルコニウム、二ケイ化タングステン、二ケイ化クロム、二ケイ化モリブデン、二ケイ化タンタル、のうちの少なくとも一つを含む、製造方法。 - 請求項1から請求項3までのいずれか一項に記載の製造方法において、
前記未焼成の銀系導体材料は、前記金属ホウ化物または前記金属ケイ化物を含み、
前記未焼成の銀系導体材料の無機成分中における前記金属ホウ化物または前記金属ケイ化物の含有率は、3体積%より大きく、20体積%より小さい、製造方法。 - 請求項1から請求項4までのいずれか一項に記載の製造方法であって、
前記未焼成の銀系導体材料は、銀粉末を含み、
前記金属ホウ化物または前記金属ケイ化物のうちの少なくとも一つは、前記銀系導体材料において、前記銀粉末の表面に付着している、製造方法。 - セラミック基板であって、
請求項1から請求項5までのいずれか一項に記載の焼成工程を経て形成されたセラミック層と、銀系導体の配線層と、を備える、セラミック基板。 - セラミック基板において配線層を形成し、未焼成のセラミック層と同時に焼成される未焼成の銀系導体材料であって、
金属ホウ化物または金属ケイ化物のうちの少なくとも一つを含有することを特徴とする、銀系導体材料。
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