WO2009136661A1 - 積層インダクタおよびその製造方法 - Google Patents
積層インダクタおよびその製造方法 Download PDFInfo
- Publication number
- WO2009136661A1 WO2009136661A1 PCT/JP2009/058960 JP2009058960W WO2009136661A1 WO 2009136661 A1 WO2009136661 A1 WO 2009136661A1 JP 2009058960 W JP2009058960 W JP 2009058960W WO 2009136661 A1 WO2009136661 A1 WO 2009136661A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- magnetic
- paste
- ferrite
- dielectric
- laminate
- Prior art date
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 15
- 238000000034 method Methods 0.000 title claims abstract description 14
- 229910000859 α-Fe Inorganic materials 0.000 claims abstract description 59
- 229910007565 Zn—Cu Inorganic materials 0.000 claims abstract description 17
- 239000000843 powder Substances 0.000 claims description 32
- 238000007639 printing Methods 0.000 claims description 13
- 238000010304 firing Methods 0.000 claims description 10
- 229910052748 manganese Inorganic materials 0.000 claims description 4
- 238000010030 laminating Methods 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 2
- 238000000576 coating method Methods 0.000 claims description 2
- 238000003825 pressing Methods 0.000 claims 1
- 230000007847 structural defect Effects 0.000 abstract description 2
- 239000007787 solid Substances 0.000 abstract 1
- 239000004020 conductor Substances 0.000 description 22
- 239000011230 binding agent Substances 0.000 description 15
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 10
- 239000000463 material Substances 0.000 description 10
- 239000002904 solvent Substances 0.000 description 9
- TVZPLCNGKSPOJA-UHFFFAOYSA-N copper zinc Chemical compound [Cu].[Zn] TVZPLCNGKSPOJA-UHFFFAOYSA-N 0.000 description 8
- 229920002799 BoPET Polymers 0.000 description 7
- 239000000919 ceramic Substances 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 4
- 239000007791 liquid phase Substances 0.000 description 4
- 239000000696 magnetic material Substances 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 229910052759 nickel Inorganic materials 0.000 description 4
- 238000007650 screen-printing Methods 0.000 description 4
- 229910052718 tin Inorganic materials 0.000 description 4
- 238000001354 calcination Methods 0.000 description 3
- 238000007606 doctor blade method Methods 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 239000007769 metal material Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 230000035699 permeability Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 2
- 239000003989 dielectric material Substances 0.000 description 2
- 238000007598 dipping method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 229910017518 Cu Zn Inorganic materials 0.000 description 1
- 229910017752 Cu-Zn Inorganic materials 0.000 description 1
- 229910017943 Cu—Zn Inorganic materials 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 229910010413 TiO 2 Inorganic materials 0.000 description 1
- 229910001308 Zinc ferrite Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 238000010344 co-firing Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 229910052878 cordierite Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- JSKIRARMQDRGJZ-UHFFFAOYSA-N dimagnesium dioxido-bis[(1-oxido-3-oxo-2,4,6,8,9-pentaoxa-1,3-disila-5,7-dialuminabicyclo[3.3.1]nonan-7-yl)oxy]silane Chemical compound [Mg++].[Mg++].[O-][Si]([O-])(O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2)O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2 JSKIRARMQDRGJZ-UHFFFAOYSA-N 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- WGEATSXPYVGFCC-UHFFFAOYSA-N zinc ferrite Chemical compound O=[Zn].O=[Fe]O[Fe]=O WGEATSXPYVGFCC-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F17/00—Fixed inductances of the signal type
- H01F17/0006—Printed inductances
- H01F17/0013—Printed inductances with stacked layers
-
- 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
- B32B18/00—Layered products essentially comprising ceramics, e.g. refractory products
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/26—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on ferrites
- C04B35/265—Compositions containing one or more ferrites of the group comprising manganese or zinc and one or more ferrites of the group comprising nickel, copper or cobalt
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/46—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on titanium oxides or titanates
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
- H01F1/34—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials non-metallic substances, e.g. ferrites
- H01F1/342—Oxides
- H01F1/344—Ferrites, e.g. having a cubic spinel structure (X2+O)(Y23+O3), e.g. magnetite Fe3O4
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F3/00—Cores, Yokes, or armatures
- H01F3/10—Composite arrangements of magnetic circuits
- H01F3/14—Constrictions; Gaps, e.g. air-gaps
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3231—Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
- C04B2235/3244—Zirconium oxides, zirconates, hafnium oxides, hafnates, or oxide-forming salts thereof
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3262—Manganese oxides, manganates, rhenium oxides or oxide-forming salts thereof, e.g. MnO
- C04B2235/3263—Mn3O4
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/327—Iron group oxides, their mixed metal oxides, or oxide-forming salts thereof
- C04B2235/3279—Nickel oxides, nickalates, or oxide-forming salts thereof
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3281—Copper oxides, cuprates or oxide-forming salts thereof, e.g. CuO or Cu2O
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3284—Zinc oxides, zincates, cadmium oxides, cadmiates, mercury oxides, mercurates or oxide forming salts thereof
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/60—Aspects relating to the preparation, properties or mechanical treatment of green bodies or pre-forms
- C04B2235/602—Making the green bodies or pre-forms by moulding
- C04B2235/6025—Tape casting, e.g. with a doctor blade
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- 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
- C04B2237/32—Ceramic
- C04B2237/34—Oxidic
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- 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
- C04B2237/32—Ceramic
- C04B2237/34—Oxidic
- C04B2237/345—Refractory metal oxides
- C04B2237/346—Titania or titanates
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F17/00—Fixed inductances of the signal type
- H01F17/0006—Printed inductances
- H01F17/0013—Printed inductances with stacked layers
- H01F2017/002—Details of via holes for interconnecting the layers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F17/00—Fixed inductances of the signal type
- H01F17/0006—Printed inductances
- H01F2017/0066—Printed inductances with a magnetic layer
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F3/00—Cores, Yokes, or armatures
- H01F3/10—Composite arrangements of magnetic circuits
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/4902—Electromagnet, transformer or inductor
Definitions
- the present invention relates to a multilayer inductor, and more particularly, to a multilayer single choke coil used in a DCZDC converter.
- Superimposition is an important product characteristic for parchment yoke coils such as DC / DC converters.
- laminated power chokes a method is adopted in which the magnetic saturation is suppressed and the superposition characteristics are improved by forming a nonmagnetic layer at the location where the magnetic flux is concentrated by simultaneous firing with the magnetic layer.
- Patent Documents 1 and 2 describe that the nonmagnetic layer is, for example, a Zn-Cu ferrite close to the Ni-Zn-Cu ferrite whose constituent elements constitute the magnetic layer. It is described.
- Patent Document 3 includes ZnF e 2 O 4 , T i O 2 , W0 2 , Ta 2 0 5 , cordierite ceramics, BaS nN ceramics, and CaMg Si A 1 B ceramics.
- the use of ceramics made of any one of Tas is described as a nonmagnetic layer.
- Patent Document 3 no description about a Mochiiruko the N i-Z n-Cu ferrite as a magnetic layer, as the non-magnetic layer Z nF e 2 0 4 (zinc ferrite) is specifically It is only described, and T i 0 2 is not specifically described.
- Patent Document 4 “T i 0 2 , Z r 0 2 : 0.1 to 10 wt%, CuO: 1.5 to 6.0 wt%, Mn 3 O 4 : 0.2 to 20 w
- Patent document 5 describes "T to i 0 2, Z r O 2 : 0. 1 ⁇ : 1 0w t%, Cu O:. 1. 5 ⁇ 5 0 wt%, Mn 3 O 4: blended 0. 2 ⁇ 1 5. 0w t% However, it is suggested that both are used as the material for the capacitor part of the inductor-capacitor composite component. However, it is not shown to be used as a nonmagnetic layer for multilayer inductors.
- the Zn content of the Zn-Cu ferrite is Ni-Z in the simultaneous firing. It diffuses into n—Cu ferrite, and N i—Z n—Cu ferrite Ni component diffuses into Zn-Cu ferrite and Ni concentration changes in a gradient.
- Ni i Zn-Cu ferrite layer is formed, and the diffusion layer has a different Curie point as the Ni concentration gradient N i—Z n—Cu ferrite, and changes from magnetic material to non-magnetic material from the low Ni concentration with increasing temperature. Therefore, the apparent thickness of the non-magnetic layer changes depending on the temperature, which causes a problem of deteriorating the temperature characteristics of the product.
- T i 0 2 when used as the ceramic constituting the nonmagnetic layer, the sintering temperature of T i 0 2 is higher than the melting point of Ag, and therefore, from Ag.
- Patent Document 1 Japanese Patent Application Laid-Open No. 11-97245
- Patent Document 2 Japanese Patent Laid-Open No. 2001-44037
- Patent Document 3 Japanese Patent Application Laid-Open No. 1-97256
- Patent Document 4 Japanese Patent No. 2977632
- Patent Document 5 Japanese Patent No. 3272740 Disclosure of Invention
- the present invention was created in view of the above circumstances, and improved temperature characteristics of a multilayer inductor using Ni-Zn-Cu ferrite to provide a product free from structural defects, and a multilayer inductor for the same. It aims at providing the manufacturing method of. Means for solving the problem
- a multilayer inductor used as a choke coil for a power supply circuit comprising a plurality of magnetic layers made of Ni—Cu—Zn ferrite, and a plurality of layers formed by being laminated via the magnetic layers.
- a rectangular parallelepiped laminate comprising: a conductive layer; and at least one nonmagnetic layer made of a Ti-Ni-Cu-Mn-Zr-based dielectric formed in contact with the plurality of magnetic layers. And at least one pair of external electrodes provided at the end of the laminate and conductively connected to the end of the coil.
- the Ni- ⁇ -Cu ferrite of the magnetic layer and the Ti-Ni-Cu-Mn-Zr-based dielectric of the nonmagnetic layer are mutually diffused to form a bonding interface.
- the dielectric in terms of oxide, T i 0 2, N i O: 2. 0 ⁇ 15 wt%, C uO:.. L 5 ⁇ 6 0 mass 0/0, Mn 3 0 4 : 0.2 to 20 weight 0/0, and Z r 0 2:. 0 1 to 10 wherein the mass%, the laminated inductor of the sum is one configured so as to be 100 wt% of (3).
- the step of firing the unsintered laminate to obtain a laminate includes the Ni—Z n—Cu ferrite of the magnetic layer formed from the magnetic sheet or the magnetic paste pattern and the nonmagnetic layer.
- FIG. 1 is a longitudinal sectional view showing the internal structure of the laminated inductor according to the present invention.
- FIG. 2 is an exploded perspective view showing the internal structure of the laminated body of the laminated inductor of the present invention.
- Fig. 3 is a photograph based on a photograph taken with a scanning electron microscope (SEM) of a cross section of region A surrounded by a broken line in Fig. 1 of the laminated interface between the magnetic layer and the nonmagnetic layer of the laminated inductor of the present invention.
- SEM scanning electron microscope
- FIG. 4 is a graph showing changes in the temperature characteristics of the inductance in the laminated inductor of the example and the laminated inductor of the comparative example. Explanation of symbols
- Magnetic layer (magnetic sheet)
- Nonmagnetic layer (Nonmagnetic sheet)
- the laminated inductor 10 includes a rectangular parallelepiped laminated body 1 and external electrodes made of a metal material such as Ag provided at both longitudinal ends of the laminated body 1. And 7.
- the laminate 1 has a structure in which a plurality of conductor layers 2 and 2 constituting a coil are laminated via a magnetic layer 3.
- a nonmagnetic layer 4 is interposed so as to replace at least one of the magnetic layer 3.
- the laminate 1 includes a plurality of magnetic layers 3 and 3 made of Ni-Zn-Cu ferrite and a nonmagnetic layer 4 made of a Ti-Ni-Cu-Mn-Zr-based dielectric. including .
- N i-Z n-Cu ferrite a ferrite containing a F e 2 0 3 and N i O and Z nO and CuO.
- the body is a dielectric containing T i 0 2 as a main component and including N i 0, CuO, Mn 3 0 4 , and Z r 0 2 .
- Nonmagnetic layer 4 the T I_ ⁇ 2 as a main component, a N i 0, CuO, dielectric containing M n 3 0 4, and Z r 0 2, the T i O 2, N i O : 2.0 to 1 5 mass%, CuO: 1. 5 ⁇ 6 ⁇ 0 mass%, Mn 3 0 4: 0. 2 ⁇ 20 % by weight, and ⁇ r 0 2: 0.:! a to 1 0 mass% It is preferable that they are blended so that the total amount becomes 100% by mass.
- CuO and Mn 3 0 4 as auxiliary agents to the non-magnetic layer 4, when they are fired, they react with a part of T i 0 2 to form a Cu-Mn-Ti 1 O-based liquid. A phase is formed, and T i 0 2 is densified at a low temperature by this liquid phase formation, and particle growth proceeds rapidly.
- Zr 0 2 has a higher melting point than T i 0 2 , CuO, and Mn 3 0 4 , Zr is added to the liquid phase of the Cu-Mn-T i _0 system, so that the liquid phase As a result, the melting point and the viscosity are increased, and as a result, the speed of grain growth by liquid phase sintering of T i 0 2 particles is adjusted, and the nonmagnetic layer 4 mainly composed of T i 0 2 with few oxygen defects is obtained. .
- T i 0 2 as the main component is preferably at least 50 wt%, 70 to 98 wt% Gayori preferred.
- Ni-Zn-Cu ferrite of magnetic layer 3 and Ti-Ni-Cu-Mn-Zr-based dielectric of nonmagnetic layer 4 mutually diffuse to form a joint interface by simultaneous firing. is doing. It is preferable to form a magnetic gap layer in the N i—Z n — Cu ferrite magnetic layer 3 by diffusing a T i—N i — Cu — Mn—Zr-based dielectric material by 0.5 ⁇ m or more. It is presumed that a magnetic gap layer is formed by generating Fe 2 Ti 0 5 at the junction interface.
- each of the magnetic layers 3 has through-holes 5 and 5 for connecting the upper and lower coil conductor layers via the magnetic layers 3 and 3, respectively. It is formed so that it may overlap with the edge part.
- the through-holes 5 and 5 here refer to holes formed in advance in the magnetic layer and filled with the same material as the coil conductor layer.
- the uppermost magnetic layer and the lowermost magnetic layer are for securing a margin in the upper and lower portions, and no conductor layer for a coin and a rule are formed in the magnetic layer.
- a U-shaped coil conductor layer 2 made of a metal material such as Ag is disposed on the upper side of the nonmagnetic layer 4. Also, in the nonmagnetic layer 4, through-holes 5, 5 for connection via the upper and lower coil conductor layers 2 and the nonmagnetic layer 4 overlap the ends of the coil conductor layers 2, 2. It is formed as follows.
- Coil conductor layers 2 and 2 are connected through through holes 5 and 5 to form a spiral coil.
- the uppermost conductor layer 2 for the coiler and the top The lower coil conductor layer 2 is provided with lead portions 6 and 6, one of the lead portions 6 and 6 is connected to one of the external electrodes, and the other is connected to the other of the external electrodes.
- a magnetic sheet (ferrite sheet) for forming the high permeability magnetic layer 3 made of Ni—Zn_Cu ferrite is prepared. Specifically, F e 2 0 3, N i 0, CuO, the ferrite fine powder after calcination pulverized to a Z n O main material, adding a binder such as a solvent and PV A such as ethanol, mixed After the ferrite paste is obtained, the ferrite paste is coated on a PET film or the like by a doctor blade method or the like to obtain a magnetic sheet (ferrite sheet).
- a nonmagnetic sheet (dielectric sheet) or a nonmagnetic pattern for forming the nonmagnetic layer 4 made of Ti 1 Ni—Cu—Mn—Zr-based dielectric is prepared. Specifically, a solvent and a binder are added to the dielectric powder containing T i 0 2 as the main component and containing N i 0, CuO, Mn 3 0 4 , and Z r 0 2 in the same manner as described above. After mixing to obtain a dielectric paste, this dielectric paste is applied on a PET film or the like by a doctor blade method or slurry build method to form a nonmagnetic sheet (dielectric sheet). Alternatively, a non-magnetic pattern is obtained by printing in a pattern.
- the through holes 5 are formed in a predetermined arrangement on the magnetic sheet and the non-magnetic sheet by a method such as punching with a mold or drilling by laser processing.
- a conductive paste for forming the coil conductor layer 2 is printed in a predetermined pattern on the magnetic sheet and the non-magnetic sheet after the through holes are formed by screen printing or the like.
- the conductive paste here, for example, a metal paste mainly composed of Ag is used.
- the magnetic sheet and the non-magnetic sheet after printing the conductive paste are laminated so that the conductive paste patterns (2) on the upper and lower sheets are connected to each other through the through holes (5) to form a spiral coil.
- the laminate is obtained by pressure bonding.
- the magnetic sheet (3) and the nonmagnetic sheet (4) are laminated in the order in which the layer structure shown in FIG. 2 is obtained.
- seat laminated body is cut
- This unfired laminate is heated in air at about 400 to 500 ° C for 1 to 3 hours to remove the binder component, and the unfired laminate after removal of the binder component is 850 to 920 ° in air. Bake with C for 1-3 hours to obtain a chip-like laminate.
- a conductive paste is applied to both ends of the chip-like laminate by a method such as dipping.
- the conductive paste for example, the same metal pace slag as described above mainly composed of Ag is used.
- Form the external electrode at the end of the laminate by baking the laminate after applying the conductive paste in air at about 500-800 ° C for 0.2-2 hours To do.
- a surface treatment of Ni, Sn, etc. (not shown) is performed on the surface of each external electrode to obtain a laminated inductor 10.
- a magnetic sheet (ferrite sheet) for forming a high permeability magnetic layer made of Ni— ⁇ —Cu ferrite is prepared. Specifically, F e 2 0 3, N i 0, CuO, the ferrite fine powder after calcination pulverized to a ZnO as a main material, solvent and PV A like binder to the accompanying Caro such as ethanol, and mixed After obtaining the ferrite paste, the ferrite paste is coated on a PET film or the like by a doctor blade method or the like to obtain a magnetic sheet (ferrite sheet).
- a conductive paste for forming the coil conductor layer is printed in a predetermined pattern on the magnetic sheet by a method such as screen printing.
- a metal paste containing Ag as a main component is used as the conductive paste here.
- a magnetic pattern (ferrite pattern) for forming a high permeability magnetic layer made of Ni—Z n—Cu ferrite is prepared. Specifically, F e 2 0 3, N i O, CuO, the ferrite fine powder after calcination pulverized to a ZnO as a main material, adding a binder such as a solvent and PV A, such as ethanol Honoré, mixed After obtaining the magnetic paste (ferrite paste), the ferrite paste is printed on the conductor pattern formed as described above so that one end thereof is exposed to obtain a magnetic pattern (ferrite pattern).
- the conductive paste for forming the coil conductor layer is printed in a predetermined pattern on the magnetic pattern so as to be connected to one end of the conductor pattern formed as described above.
- the magnetic material pattern and the conductor pattern are alternately printed by means such as screen printing.
- a non-magnetic pattern for forming a non-magnetic layer made of Ti-Ni-Cu-Mn-Zr-based dielectric is fabricated.
- the magnetic material pattern and the conductor pattern are alternately printed by means such as screen printing.
- the obtained printed laminate is cut into unit dimensions to obtain a chip-like unfired laminate.
- This green laminate is heated in air at about 400-500 ° C for 1-3 hours.
- the binder component is removed, and the unfired laminate after removing the binder component is fired in air at 850 to 920 for 1 to 3 hours to obtain a chip-like laminate.
- a conductive paste is applied to both ends of the chip-like laminate by a method such as dipping.
- a metal paste similar to that described above containing Ag as a main component is used for the conductive pace plate.
- the laminate after applying the conductive paste is baked in air at about 500 to 800 ° C for 0.2 to 2 hours to form external electrodes at the ends of the laminate.
- the surface of each external electrode is treated with Ni, Sn, etc. to obtain a stacked inductor.
- Ethanol (solvent) and PVA binder are added to the Ni i—Z n_Cu ferrite powder with the composition shown in Table 1, mixed, and applied to a PET film. Layer). Further, as shown in Table 1, to minute main component of T i 0 2, N i 0 , CuO, Mn 3 0 4, and Z r 0 2 containing dielectric ( "T i 0 2 low-temperature firing material In the same manner, a solvent and a binder were added to and mixed with the powder, and this was coated on a PET film to obtain a nonmagnetic sheet (nonmagnetic layer).
- Resulting printing electrodes on green sheets was laminated T i 0 2 low-temperature sintered material laminated sheet laminate of the structure of FIG. 2 (N i-Zn- Cu ferrite Example laminates) were prepared, and the obtained sheet laminate was cut into unit dimensions to obtain chip-like unfired laminates.
- the obtained unfired laminate was heated at 500 ° C. for 1 hour to remove the binder component, and fired at 900 ° C. for 1 hour to obtain a laminate. Thereafter, an Ag external electrode was attached to the end of the laminated body, and Ni and Sn plating processes were performed to obtain the chip-shaped laminated inductor of the example.
- Each green sheet obtained was printed and laminated with an electrode (a U-shaped coil conductor layer), and a sheet laminate with the structure shown in Fig. 2 (Ni- ⁇ -Cu ferrite laminated with Zn_Cu ferrite) Laminate) was prepared, and the obtained sheet laminate was cut into unit dimensions to obtain a chip-like unfired laminate.
- the obtained unfired laminate was heated at 500 ° C. for 1 hour to remove the binder component, and fired at 900 ° C. for 1 hour to obtain a laminate. That After that, an Ag external electrode was attached to the end of the laminated body, and Ni and Sn plating processes were performed to obtain a chip-shaped laminated inductor as a comparative example.
- FIG. 3 is a partial enlarged view of the multilayer inductor obtained in the embodiment of the present invention obtained above based on a photograph taken with a scanning electron microscope (SEM) in a region A surrounded by a broken line in FIG. Shown in The magnetic layer 3 made of N i—Z n—C u ferrite and the nonmagnetic layer 4 made of T i 0 2 low-temperature fired material are interdiffused to form a reaction layer R at the bonding interface. Has been. In the figure, S is a void.
- the temperature characteristic change of the inductance of the obtained laminated inductor was measured.
- Figure 4 shows the characteristics together with the characteristics when using Zn—Cu ferrite as the nonmagnetic layer.
- the multilayer inductor using the TiO 2 low-temperature fired material of the present invention for the nonmagnetic layer has a change in inductance due to temperature compared to the multilayer inductor of the comparative example using the Zn—Cu ferrite for the nonmagnetic layer.
- the rate is less than 1/10.
- the multilayer inductor of the present invention has good direct current superposition characteristics and does not cause variations in temperature characteristics.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Power Engineering (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Composite Materials (AREA)
- Dispersion Chemistry (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Coils Or Transformers For Communication (AREA)
- Manufacturing Cores, Coils, And Magnets (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN200980116755.5A CN102017028A (zh) | 2008-05-09 | 2009-05-07 | 叠层电感器和其制造方法 |
US12/991,687 US20110095856A1 (en) | 2008-05-09 | 2009-05-07 | Multi layer inductor and method for manufacturing the same |
JP2010511095A JPWO2009136661A1 (ja) | 2008-05-09 | 2009-05-07 | 積層インダクタおよびその製造方法 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2008-123947 | 2008-05-09 | ||
JP2008123947 | 2008-05-09 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2009136661A1 true WO2009136661A1 (ja) | 2009-11-12 |
Family
ID=41264707
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2009/058960 WO2009136661A1 (ja) | 2008-05-09 | 2009-05-07 | 積層インダクタおよびその製造方法 |
Country Status (5)
Country | Link |
---|---|
US (1) | US20110095856A1 (ja) |
JP (1) | JPWO2009136661A1 (ja) |
KR (1) | KR20100127878A (ja) |
CN (1) | CN102017028A (ja) |
WO (1) | WO2009136661A1 (ja) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102082019A (zh) * | 2010-12-01 | 2011-06-01 | 深圳市麦捷微电子科技股份有限公司 | 一种功率电感及其制造方法 |
US20120119866A1 (en) * | 2010-11-16 | 2012-05-17 | Samsung Electro-Mechanics Co., Ltd. | Non-magnetic material composition for ceramic electronic component, ceramic electronic component manufactured by using the same, and method of manufacturing the ceramic electronic component |
KR20130116024A (ko) * | 2012-04-13 | 2013-10-22 | 도꼬가부시끼가이샤 | 적층형 전자부품 |
US8576040B2 (en) | 2011-04-25 | 2013-11-05 | Samsung Electro-Mechanics Co., Ltd. | Multilayer type power inductor |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5703751B2 (ja) * | 2010-12-28 | 2015-04-22 | Tdk株式会社 | 積層インダクタ及び積層インダクタの製造方法 |
CN103597558B (zh) * | 2011-06-15 | 2017-05-03 | 株式会社村田制作所 | 层叠线圈部件 |
KR20130001984A (ko) * | 2011-06-28 | 2013-01-07 | 삼성전기주식회사 | 적층형 파워 인덕터의 갭층 조성물 및 상기 갭층을 포함하는 적층형 파워 인덕터 |
JP5761609B2 (ja) | 2011-09-02 | 2015-08-12 | 株式会社村田製作所 | セラミック電子部品、及びセラミック電子部品の製造方法 |
CN102982965B (zh) * | 2011-09-02 | 2015-08-19 | 株式会社村田制作所 | 共模扼流线圈及其制造方法 |
KR101332100B1 (ko) | 2011-12-28 | 2013-11-21 | 삼성전기주식회사 | 적층형 인덕터 |
KR101396656B1 (ko) * | 2012-09-21 | 2014-05-16 | 삼성전기주식회사 | 적층형 파워 인덕터 및 이의 제조방법 |
KR101983135B1 (ko) | 2012-12-27 | 2019-05-28 | 삼성전기주식회사 | 인덕터 및 그의 갭층 제조를 위한 조성물 |
JP6205149B2 (ja) * | 2013-03-19 | 2017-09-27 | Fdk株式会社 | 非磁性材料および非磁性磁器組成物の製造方法 |
KR101946493B1 (ko) * | 2013-07-16 | 2019-02-11 | 삼성전기 주식회사 | 칩 전자부품 |
JP6569451B2 (ja) * | 2015-10-08 | 2019-09-04 | Tdk株式会社 | 積層コイル部品 |
CN108781510B (zh) * | 2016-01-20 | 2021-08-17 | 杰凯特技术集团股份公司 | 用于传感元件和传感器装置的制造方法 |
JP2020061410A (ja) * | 2018-10-05 | 2020-04-16 | 株式会社村田製作所 | 積層型電子部品 |
JP6919641B2 (ja) | 2018-10-05 | 2021-08-18 | 株式会社村田製作所 | 積層型電子部品 |
KR102064106B1 (ko) * | 2019-01-31 | 2020-01-08 | 삼성전기주식회사 | 칩 전자부품 |
KR102161540B1 (ko) * | 2019-06-20 | 2020-10-05 | 임욱 | 복합 재료를 이용한 성능 강화형 하이브리드 인덕터 및 이를 갖는 전자부품 |
US12009320B2 (en) * | 2019-10-08 | 2024-06-11 | Intel Corporation | Interconnect loss of high density package with magnetic material |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04284612A (ja) * | 1991-03-13 | 1992-10-09 | Tdk Corp | 複合積層部品 |
JPH08124746A (ja) * | 1994-10-26 | 1996-05-17 | Tokin Corp | 積層インダクタ |
JP2977632B2 (ja) * | 1991-03-27 | 1999-11-15 | 太陽誘電株式会社 | 誘電体磁器組成物 |
JP2006351954A (ja) * | 2005-06-17 | 2006-12-28 | Tdk Corp | 積層型コモンモードフィルタ |
-
2009
- 2009-05-07 KR KR1020107024647A patent/KR20100127878A/ko not_active Application Discontinuation
- 2009-05-07 US US12/991,687 patent/US20110095856A1/en not_active Abandoned
- 2009-05-07 CN CN200980116755.5A patent/CN102017028A/zh active Pending
- 2009-05-07 JP JP2010511095A patent/JPWO2009136661A1/ja active Pending
- 2009-05-07 WO PCT/JP2009/058960 patent/WO2009136661A1/ja active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04284612A (ja) * | 1991-03-13 | 1992-10-09 | Tdk Corp | 複合積層部品 |
JP2977632B2 (ja) * | 1991-03-27 | 1999-11-15 | 太陽誘電株式会社 | 誘電体磁器組成物 |
JPH08124746A (ja) * | 1994-10-26 | 1996-05-17 | Tokin Corp | 積層インダクタ |
JP2006351954A (ja) * | 2005-06-17 | 2006-12-28 | Tdk Corp | 積層型コモンモードフィルタ |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20120119866A1 (en) * | 2010-11-16 | 2012-05-17 | Samsung Electro-Mechanics Co., Ltd. | Non-magnetic material composition for ceramic electronic component, ceramic electronic component manufactured by using the same, and method of manufacturing the ceramic electronic component |
CN102082019A (zh) * | 2010-12-01 | 2011-06-01 | 深圳市麦捷微电子科技股份有限公司 | 一种功率电感及其制造方法 |
US8576040B2 (en) | 2011-04-25 | 2013-11-05 | Samsung Electro-Mechanics Co., Ltd. | Multilayer type power inductor |
KR20130116024A (ko) * | 2012-04-13 | 2013-10-22 | 도꼬가부시끼가이샤 | 적층형 전자부품 |
JP2013236050A (ja) * | 2012-04-13 | 2013-11-21 | Toko Inc | 積層型電子部品 |
KR101866439B1 (ko) * | 2012-04-13 | 2018-06-11 | 가부시키가이샤 무라타 세이사쿠쇼 | 적층형 전자부품 |
Also Published As
Publication number | Publication date |
---|---|
CN102017028A (zh) | 2011-04-13 |
JPWO2009136661A1 (ja) | 2011-09-08 |
US20110095856A1 (en) | 2011-04-28 |
KR20100127878A (ko) | 2010-12-06 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2009136661A1 (ja) | 積層インダクタおよびその製造方法 | |
JP5281090B2 (ja) | 積層インダクタ、その製造方法、及び積層チョークコイル | |
JP4100459B2 (ja) | 積層コイル部品及びその製造方法 | |
JP4906972B1 (ja) | 磁性材料およびそれを用いたコイル部品 | |
JP5881992B2 (ja) | 積層インダクタ及びその製造方法 | |
JP5048155B1 (ja) | 積層インダクタ | |
US11972885B2 (en) | Magnetic material and coil component | |
JP5626834B2 (ja) | 開磁路型積層コイル部品の製造方法 | |
JP2012238840A (ja) | 積層インダクタ | |
JP5940465B2 (ja) | 積層型電子部品およびその製造方法 | |
JP5598452B2 (ja) | 電子部品及びその製造方法 | |
TW201929001A (zh) | 層疊線圈型電子部件 | |
CN107403678A (zh) | 层叠线圈部件 | |
JP2015079931A (ja) | 積層型電子部品 | |
JP2012238841A (ja) | 磁性材料及びコイル部品 | |
JP2012164959A (ja) | コイル部品 | |
JP2012164958A (ja) | コイル部品 | |
JP2005038904A (ja) | 積層セラミック電子部品およびその製造方法 | |
KR102217286B1 (ko) | 하이브리드 인덕터 및 그 제조방법 | |
WO2009130935A1 (ja) | 電子部品 | |
JPH0620014B2 (ja) | 積層チップインダクタとその製造方法 | |
JP2005209404A (ja) | 積層セラミック電子部品の内部電極用導電ペースト及びそれを用いた積層セラミック電子部品の製造方法 | |
JP2014082280A (ja) | 積層コイル部品 | |
TWI236686B (en) | Method for manufacturing multilayer ceramic electronic component | |
JP5108162B1 (ja) | 積層インダクタ |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 200980116755.5 Country of ref document: CN |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 09742785 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2010511095 Country of ref document: JP |
|
ENP | Entry into the national phase |
Ref document number: 20107024647 Country of ref document: KR Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: 12991687 Country of ref document: US |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 09742785 Country of ref document: EP Kind code of ref document: A1 |