CN104282417A - Inductor and method for manufacturing the same - Google Patents
Inductor and method for manufacturing the same Download PDFInfo
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- CN104282417A CN104282417A CN201410045848.6A CN201410045848A CN104282417A CN 104282417 A CN104282417 A CN 104282417A CN 201410045848 A CN201410045848 A CN 201410045848A CN 104282417 A CN104282417 A CN 104282417A
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- magnetic
- magnetic sheet
- inductor
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- metal
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F10/00—Thin magnetic films, e.g. of one-domain structure
- H01F10/08—Thin magnetic films, e.g. of one-domain structure characterised by magnetic layers
- H01F10/10—Thin magnetic films, e.g. of one-domain structure characterised by magnetic layers characterised by the composition
-
- 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
- H01F1/14—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 metals or alloys
- H01F1/16—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 metals or alloys in the form of sheets
-
- 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
- H01F1/42—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of organic or organo-metallic materials, e.g. graphene
-
- 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
- H01F1/44—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of magnetic liquids, e.g. ferrofluids
- H01F1/442—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of magnetic liquids, e.g. ferrofluids the magnetic component being a metal or alloy, e.g. Fe
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Coils Or Transformers For Communication (AREA)
Abstract
The present invention relates to an inductor and a method for manufacturing the same. Disclosed is a magnetic sheet used for manufacturing a multilayer power inductor, and the magnetic sheet comprises thermocuring resin which is cured at the temperature of 300 DEG C or below and metal magnetic powder.
Description
Quoting of related application
This application claims the foreign priority that the title submitted on July 12nd, 2013 is the korean patent application series number 10-2013-0082213 of " inductor and manufacture method (Inductor and Method for Manufacturing the Same) thereof ", by reference its full content is incorporated in the application.
Technical field
The present invention relates to inductor and manufacture method thereof, and more specifically, relate to and there is excellent DC biasing characteristic can be used in inductor and the manufacture method thereof of heavy current for the electric current applied.
Background technology
Multilayer power inductor (multilayered power inductor) is generally used for power circuit, DC-DC(DC-to-DC in such as mobile electronic equipment) transducer, and, especially, for heavy current, because it suppresses the magnetic saturation of inductor with regard to material or structure.Although multilayer power inductor has shortcoming (because it has the change larger than wirewound power inductor in inductance), because it is less and thinner so it advantageously can respond current trend.
But typical multilayer power inductor use has high permeability and resistance still has the ferrite magnetic oxide material of low magnetic flux metric density for magnetic material, makes it have for magnetically saturated low inductance and low DC biasing characteristic.
[relate art literature]
[patent documentation]
(patent documentation 1) Korean Patent is flat opens publication number 2012-0084657.
Summary of the invention
An object of the present invention is to provide a kind of inductor and the manufacture method thereof that can improve inductance.
Another object of the present invention is to provide and can obtains low-loss characteristic sum for the inductor of heavy current and manufacture method thereof.
According to an illustrative embodiment of the invention, the heat reactive resin solidified under being provided in 300 DEG C or lower temperature and the metal magnetic be distributed on heat reactive resin.
Metal magnetic can comprise the alloy based on iron (Fe).
Metal magnetic can comprise at least one in Fe-Si, Fe-Si-Al, Fe-Si-Cr and Fe-Si-B-Cr.
Heat reactive resin can comprise at least one in epoxy resin, melmac, acrylic resin, phenolic resins and imide resin.
According to another illustrative embodiments of the present invention, provide the inductor comprising the following: the apparatus main body comprising multiple magnetic sheet; The internal electrode that magnetic sheet in apparatus main body is formed; And the outer electrode to be formed in two outer end of apparatus main body is to be electrically connected to internal electrode, wherein, each magnetic sheet is the compound of heat reactive resin and the metal magnetic solidified under 300 DEG C or lower temperature.
Metal magnetic can comprise the alloy based on iron (Fe).
Metal magnetic can comprise at least one in Fe-Si, Fe-Si-Al, Fe-Si-Cr and Fe-Si-B-Cr.
Heat reactive resin can comprise at least one in epoxy resin, melmac, acrylic resin, phenolic resins and imide resin.
According to another illustrative embodiments of the present invention, be provided for the method manufacturing inductor, the method comprises: preparation has the metal-resin compound of heat reactive resin and the metal magnetic solidified under 300 DEG C or lower temperature; Compound is used to manufacture magnetic sheet; Magnetic sheet forms internal electrode; Heap superimposition compacting magnetic sheet is so that manufacturing installation main body; And outer electrode is formed on the surface of apparatus main body, outer electrode is electrically connected to internal electrode.
Metal magnetic can comprise the alloy based on iron (Fe) and heat reactive resin can comprise at least one in epoxy resin, melmac, acrylic resin, phenolic resins and imide resin.
The manufacture of magnetic sheet can comprise use roll forming process or technique makes compound enter in sheet.
The formation of internal electrode can comprise: in magnetic sheet, form through hole; And form metal pattern in through-holes with on the surface of magnetic sheet.
Accompanying drawing explanation
Fig. 1 is the diagram of the inductor illustrated according to an illustrative embodiment of the invention;
Fig. 2 is the diagram that the magnetic sheet shown in Fig. 1 is shown;
Fig. 3 is the flow chart of the method illustrated for the manufacture of inductor according to an illustrative embodiment of the invention;
Fig. 4 is the curve chart illustrating that the fusing point of metal nanoparticle reduces; And
Fig. 5 is the curve chart that the ratio resistance feature experiencing heat treated 5nm nano particle at 200 DEG C of temperature is shown.
Embodiment
With reference to accompanying drawing from the description of following illustrative embodiments, various advantages and features of the present invention and its implementation will become clear.But the present invention can revise with multiple different form and the invention should not be deemed to be limited to the execution mode in this proposition.On the contrary, provide these execution modes to make the disclosure detailed and complete, and scope of the present invention is fully conveyed to those skilled in the art.Run through whole specification, identical reference number represents identical element.
Term as used in this specification is for illustration of execution mode, and unrestricted the present invention.Unless clearly mention in addition, otherwise singulative comprised plural form in this manual.In whole specification, word " comprises " and variant such as " comprises " or " containing " should be understood to imply and comprise described composition, step, operation and/or element, but does not get rid of any other composition, step, operation and/or element.
In addition, the illustrative embodiments described in the description is described with reference to as the sectional view of preferred example figure and/or plane graph.In the accompanying drawings, in order to effective description technique thought, the thickness in film and region is amplified.Therefore, exemplary characteristics can change according to manufacturing technology and/or admissible error.Therefore, illustrative embodiments of the present invention is not limited to special characteristic, but can comprise the change according to manufacture process.Such as, square etching area maybe can be had predetermined bending by sphering.
Hereinafter, inductor according to an illustrative embodiment of the invention and manufacture method thereof is described with reference to the accompanying drawings in detail.
Fig. 1 is the diagram of the inductor illustrated according to an illustrative embodiment of the invention; And Fig. 2 is the plane graph of the magnetic sheet of the inductor shown in Fig. 1.
With reference to figure 1 and Fig. 2, the inductor 100 according to execution mode is power inductors, and the electrode structure 120 that can comprise apparatus main body 110 and be arranged in apparatus main body 110.
Apparatus main body 110 can have the sandwich construction be made up of multiple magnetic sheet 112.By making the resin-metal compound of resin 112a and metal magnetic 112b as sheet to manufacture each magnetic sheet 112.Resin 112a may be heat reactive resin.As an example, resin 112a can be included in the heat reactive resin lower than solidifying under about 300 DEG C or lower temperature, such as epoxy resin or melmac.As another example, resin 112a can be included in acrylic resin, phenolic resins and imide resin lower than solidifying under 300 DEG C or lower temperature.But resin 112a is not limited to above-mentioned resin, any resin lower than solidifying under about 300 DEG C or lower temperature can also be included in.
Metal magnetic 112b can comprise the alloyed powder based on iron (Fe).As an example, metal magnetic 112b can comprise at least one alloy in Fe-Si, Fe-Si-Al, Fe-Si-Cr and Fe-Si-B-Cr.Although be used for metal magnetic 112b based on the alloy of iron (Fe) in this illustrative embodiments, various metal and alloy thereof can be used for metal magnetic 112b.
By the material that the metal magnetic 112b with excellent saturation magnetisation value is used as the apparatus main body 110 of multilayer power inductor, magnetic sheet 112 can be applied to the inductor that can be used for heavy current.
Electrode structure 120 can comprise internal electrode 122 and outer electrode 124.Internal electrode 122 can the magnetic sheet 112 in apparatus main body 110 be formed.Internal electrode 122 can be the circuit pattern be made up of silver (Ag) or other metal materials.Here, internal electrode 122 can be formed by metal paste, and this metal paste obtains conductibility by low-temperature burning.
Outer electrode 124 can be used to inductor 100 to be electrically connected to external electronic device (not shown).Outer electrode 124 can be electrically connected to internal electrode 122 and can be arranged on any one end of apparatus main body 110.Outer electrode 124 can comprise as the metal level of external terminal and electrodeposited coating (described electrodeposited coating is formed by performing electroplating process on the metal layer and is made up of nickel (Ni) or tin (Sn)).
Inductor 100 may not comprise and being arranged between magnetic sheet 112 to block the non-magnetic gap layer (not shown) of magnetic flux.More particularly, when using ferrite magnetic oxide material implement device main body, because the magnetic saturation caused by lower magnetic density reduces inductance, and DC biasing characteristic is reduced.Therefore, in order to prevent this kind of problem, the clearance layer be made up of nonmagnetic substance is set in apparatus main body.But, even if use this kind of clearance layer, due to the internal characteristics of Ferrite Material, be still difficult to the inductor realizing can be used in heavy current.
In addition, when using ferrite, ferrite sheet forming metallic circuit, then on ferrite sheet, carries out sintering process.In this sintering process, ferrite sheet is out of shape.Therefore, in order to obtain inductance or the DC biasing characteristic of higher level, the size (that is, width) of widening ferrite sheet is needed.But if widen ferrite sheet, this ferrite sheet easily deforms, and be therefore difficult to use.Therefore, can reach a conclusion due to various problems, the internal characteristics of such as material and the distortion in sintering process, be difficult to utilize ferrite sheet manufacture to can be used in the inductor of heavy current.
But, according to an illustrative embodiment of the invention, manufacture by the metal magnetic 112b with high saturation magnetization value is used as magnetic material (instead of ferrite magnetic oxide material) inductor that can be used in heavy current.But, when using metal magnetic, because metal inherently may oxidized and crystallization or oxidation under being possible especially in high temperature, so be difficult to the magnetic material (it must experience high-temp combustion process) metal being used as inductor.But, as mentioned above, inductor 100 according to an illustrative embodiment of the invention uses the heat reactive resin that can burn under about 300 DEG C or lower temperature for the resin 112a of magnetic sheet 112, and uses the metal paste material that can sinter at the temperature of about 200 DEG C for internal electrode 122.By doing like this, by carrying out at relatively low temperatures burning and sinter the inductor manufactured according to illustrative embodiments, thus metal magnetic can be used as magnetic material.Therefore, use the metal magnetic with high saturation magnetization value as magnetic material according to the inductor 100 of illustrative embodiments, thus overcoming various problems, the inductance such as caused due to magnetic saturation and low DC biasing characteristic reduces, thus eliminates the needs using non-magnetic gap layer.
As mentioned above, can comprise apparatus main body 110 and electrode structure 120 according to the inductor 100 of illustrative embodiments, wherein, apparatus main body 110 can have the metal magnetic 112b of the saturation magnetisation value higher than ferrite as main magnetic material.By doing like this, use the metal magnetic 112b with the higher saturation flux density value of inductor that Billy manufactures by ferrite magnetic oxide as magnetic sheet, make even can arrange in higher bias current the inductor that can overcome the inductance minimizing caused due to magnetic saturation.Therefore, there is the magnetic material of metal magnetic for the apparatus main body of inductor of higher saturation magnetisation value, make with ferrite magnetic oxide for magnetic material situation compared with, more excellent DC biasing characteristic can be obtained according to the inductor of illustrative embodiments and also may be used for heavy current.
Hereinafter, the method for the manufacture of inductor according to an illustrative embodiment of the invention will be described in detail.At this, can omit or simplify the description repeated with above-mentioned inductor 100.
Fig. 3 is the flow chart of the method illustrated for the manufacture of inductor according to an illustrative embodiment of the invention, and Fig. 4 is the curve chart illustrating that the fusing point of metal nanoparticle reduces.In addition, Fig. 5 is the curve chart that the ratio resistance characteristic experiencing heat treated 5nm nano particle at the temperature of 200 DEG C is shown.
Referring to figs. 1 to Fig. 3, resin-metal compound can be used to produce magnetic sheet 112(S110).Particularly, previously prepared resin-metal compound.Resin-metal compound is prepared by utilizing predetermined solvent heat reactive resin 112a and metal magnetic 112b.At this, heat reactive resin 112a can be the heat reactive resin solidified under lower than about 300 DEG C or lower temperature, such as epoxy resin or melmac.As metal magnetic 112b, the alloy based on iron (Fe) can be used, such as Fe-Si, Fe-Si-Al, Fe-Si-Cr and Fe-Si-B-Cr, preferably can use wherein at least one alloy.
The resin-metal compound produced like this can be made sheet.By performing multiple technologies on the compositions, such as roll forming process or technique, make sheet by resin-metal compound, thus can form the sheet having and expect thickness.By doing like this, can the magnetic sheet 112 shown in shop drawings 2.Multiple magnetic sheet 112 can be produced under substantially identical process conditions.
Then, internal electrode 122 can be formed in each magnetic sheet 112.The formation of internal electrode 122 can be included in magnetic sheet 112 and form through hole, and forms passage (metal paste being used in magnetic sheet 112 grade uses method for printing screen to form passage by filling vias) and metal pattern (described metal pattern is electrically connected to the passage on the surface of magnetic sheet 112).
Preferably, metal paste can be can in the low-temperature burning metal paste of the curing temperature scope combustion of magnetic sheet 112.Usually, high-temp combustion type silver (Ag) paste is for the formation of the material of the internal electrode of inductor.But, fully may not sinter under the temperature of this high-temp combustion type paste between 200 DEG C and 300 DEG C (it is the curing temperature of heat reactive resin), thus be difficult to obtain excellent conductibility.Therefore, in order to prevent because curing process causes the feature of metal paste to reduce, the low temperature incendiary type nanometer paste formed by conductive metal particulate by nano-scale is used for metal paste to form internal electrode, even if thus also can realize excellent conductibility wiring under the curing temperature of resin.
With reference to figure 4, because metallic is nano-scale, fusing point reduces, thus can reduce sintering temperature.Therefore, when using the metallic nanoparticle period of the day from 11 p.m. to 1 a.m of number mm, the ratio resistance of 10u Ω cm or less is obtained by the Low Temperature Heat Treatment of about 200 DEG C.Therefore, can be metal paste and preferably there is the metal paste in several nanometer footpath to form internal electrode 122.
With reference to figure 5, on silver (Ag) nano particle of average 5nm size, carry out one hour heat treated result as at the temperature of about 200 DEG C, the ratio resistance of about 4 to 5u Ω cm can be obtained.Therefore, can find out, assign to increase curing temperature or ratio resistance can be improved further by the adjustment heat treated time cycle by the one-tenth changing heat reactive resin.Therefore, when the Nano silver grain with several nanometer footpath for metal paste to form internal electrode 122 time, can sinter at relatively low temperatures, thus can find out, the ratio resistance of 10u Ω cm or less can be obtained.
Be back to Fig. 1 to Fig. 3, magnetic sheet 112 manufacturing installation main body 110(S130 can be used).The manufacture of apparatus main body 110 can comprise heap superimposition compacting magnetic sheet 112 so that formation sheet is stacking, and cutting blade is stacking to manufacture multiple apparatus main body 110, and solidification equipment main body 110.At this, the solidification of apparatus main body 110 can higher than carry out magnetic sheet 112 curing temperature temperature under carry out.But even if in this case, the solidification carrying out apparatus main body 110 at lower than the temperature of 300 DEG C is desired.
At this, before forming independent apparatus main body, can each magnetic sheet 112 of semi-solid preparation further.The semi-solid preparation of magnetic sheet 112 can carry out at lower than the temperature of carrying out the stacking curing temperature of sheet.That is, the solidification of magnetic sheet 112 can be carried out at the temperature of the first solidification process (about 300 DEG C) stacking lower than cured sheets.In this case, during the semi-solid preparation of magnetic sheet 112, can sintering metal nanometer paste, thus the formation of internal electrode 122 can be completed.
Then, can form outer electrode 124, it is electrically connected to internal electrode 122 in apparatus main body 110.By applying conductive paste on the both ends of apparatus main body 110, then heat-treat, to form outer electrode 124 on the conductive paste of application.As the conductive paste forming outer electrode 124, metal nano paste or curing metal paste can be used.By doing like this, the both ends of apparatus main body 110 being electrically connected to internal electrode 122 form outer electrode 124.
As mentioned above, in the method manufacturing inductor 100 according to an illustrative embodiment of the invention, can utilize and there is the metal magnetic 112b higher than ferritic saturation magnetisation value as magnetic material manufacturing installation main body 110, then apparatus main body 110 experiences low-temperature burning process to form electrode structure 120, thus completes the manufacture of inductor 100.By doing like this, use the metal magnetic 112b with the higher saturation flux density value of inductor that Billy manufactures by ferrite magnetic oxide as magnetic sheet, even if make also can manufacture the inductor that can overcome the inductance minimizing caused due to magnetic saturation in higher bias current.Therefore, in the method for the manufacture of the inductor according to illustrative embodiments, to there is the magnetic material of the apparatus main body being used for inductor compared with the metal magnetic of high saturation value, thus by obtaining and more excellent DC biasing characteristic compared with situation that ferrite magnetic oxide is used for magnetic material, the inductor that can be used in heavy current can be manufactured.In addition, in the method for the manufacture of the inductor according to illustrative embodiments, because sintering and combustion process can be completed at relatively low temperatures, so inductor can be manufactured at low cost, and the feature of not deteriorated metal magnetic.
As mentioned above, to there is the magnetic material of the apparatus main body being used for inductor compared with the metal magnetic of high saturation value, make with ferrite magnetic oxide for magnetic material situation compared with, more excellent DC biasing characteristic can be obtained according to the inductor of illustrative embodiments and also can be used for heavy current.
In addition, in the method for the manufacture of the inductor according to illustrative embodiments, to there is the magnetic material of the apparatus main body being used for inductor compared with the metal magnetic of high saturation value, thus compared with the situation that can be used for magnetic material by acquisition and ferrite magnetic oxide, more excellent DC biasing characteristic manufactures the inductor that can be used in heavy current.
In addition, in the method for the manufacture of the inductor according to illustrative embodiments, because sintering and combustion process can be completed at relatively low temperatures, so inductor can be manufactured at low cost, and the feature of not deteriorated metal magnetic.
Combine the illustrative embodiments being considered to practicality at present and describe the present invention.In addition, foregoing description only illustrates illustrative embodiments of the present invention.Therefore, be to be understood that, when not deviating from scope of the present invention and equivalent thereof disclosed in this specification, those skilled in the art can modify and change.Provide above-mentioned illustrative embodiments, implement best mode of the present invention to describe.Therefore, other inventions (such as the present invention) can be used to implement above-mentioned illustrative embodiments in other modes known in the art, and according to specific application area and usage, various amendment is made to above-mentioned illustrative embodiments.Therefore, should be understood that, the present invention is not limited to disclosed execution mode.In addition, should be understood that, other execution modes are also included within the spirit and scope of claims.
Claims (12)
1., for the manufacture of a magnetic sheet for multilayer power inductor, described magnetic sheet comprises:
Heat reactive resin, it solidifies under 300 DEG C or lower temperature; And
Metal magnetic, is distributed on described heat reactive resin.
2. magnetic sheet according to claim 1, wherein, described metal magnetic comprises the alloy based on iron Fe.
3. magnetic sheet according to claim 1, wherein, described metal magnetic comprises at least one in Fe-Si, Fe-Si-Al, Fe-Si-Cr and Fe-Si-B-Cr.
4. magnetic sheet according to claim 1, wherein, described heat reactive resin comprises at least one in epoxy resin, melmac, acrylic resin, phenolic resins and imide resin.
5. an inductor, comprising:
Apparatus main body, comprises multiple magnetic sheet;
Internal electrode, the described magnetic sheet in described apparatus main body is formed; And
Outer electrode, is formed to be electrically connected to described internal electrode in two outer end of described apparatus main body,
Wherein, each described magnetic sheet is the compound of heat reactive resin and the metal magnetic solidified under 300 DEG C or lower temperature.
6. inductor according to claim 5, wherein, described metal magnetic comprises the alloy based on iron Fe.
7. inductor according to claim 5, wherein, described metal magnetic comprises at least one in Fe-Si, Fe-Si-Al, Fe-Si-Cr and Fe-Si-B-Cr.
8. inductor according to claim 5, wherein, described heat reactive resin comprises at least one in epoxy resin, melmac, acrylic resin, phenolic resins and imide resin.
9., for the manufacture of a method for inductor, described method comprises:
Preparation has the metal-resin compound of heat reactive resin and the metal magnetic solidified under 300 DEG C or lower temperature;
Described compound is used to manufacture magnetic sheet;
Described magnetic sheet forms internal electrode;
Heap superimposition obsession states magnetic sheet so that manufacturing installation main body; And
The surface of described apparatus main body forms outer electrode, and described outer electrode is electrically connected to described internal electrode.
10. method according to claim 9, wherein, described metal magnetic comprises the alloy based on iron Fe, and
Wherein, described heat reactive resin comprises at least one in epoxy resin, melmac, acrylic resin, phenolic resins and imide resin.
11. methods according to claim 9, wherein, the manufacture of described magnetic sheet comprises use roll forming process or technique makes described compound enter in sheet.
12. methods according to claim 9, wherein, the formation of described internal electrode comprises:
Through hole is formed in described magnetic sheet; And
Metal pattern is formed in described through hole and on the surface of described magnetic sheet.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020130082213A KR20150007766A (en) | 2013-07-12 | 2013-07-12 | Inductor and method for manufacturing the same |
| KR10-2013-0082213 | 2013-07-12 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104282417A true CN104282417A (en) | 2015-01-14 |
| CN104282417B CN104282417B (en) | 2018-02-02 |
Family
ID=52257222
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410045848.6A Expired - Fee Related CN104282417B (en) | 2013-07-12 | 2014-02-08 | Inductor and its manufacture method |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR20150007766A (en) |
| CN (1) | CN104282417B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108109807A (en) * | 2016-11-24 | 2018-06-01 | Tdk株式会社 | Electronic unit |
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| JPH1041136A (en) * | 1996-07-18 | 1998-02-13 | Tokin Corp | Multilayer common choke coil device |
| CN1199538A (en) * | 1996-09-05 | 1998-11-18 | 株式会社东金 | Magnetic prepreg, its mfg. method and printed wiring board employing said prepreg |
| CN1518011A (en) * | 2002-12-26 | 2004-08-04 | ������������ʽ���� | Metal powder and compressed powder magnetic core using the metal powder |
| JP2006237506A (en) * | 2005-02-28 | 2006-09-07 | Sumitomo Bakelite Co Ltd | Magnetic material paste, inductor, and multilayer wiring board |
| CN101473388A (en) * | 2006-06-20 | 2009-07-01 | 株式会社村田制作所 | Laminated coil part |
| CN101901668A (en) * | 2009-05-27 | 2010-12-01 | 乾坤科技股份有限公司 | Inducer and production method thereof |
| CN104051145A (en) * | 2013-03-15 | 2014-09-17 | 三星电机株式会社 | Inductor and method for manufacturing the same |
-
2013
- 2013-07-12 KR KR1020130082213A patent/KR20150007766A/en not_active Application Discontinuation
-
2014
- 2014-02-08 CN CN201410045848.6A patent/CN104282417B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1041136A (en) * | 1996-07-18 | 1998-02-13 | Tokin Corp | Multilayer common choke coil device |
| CN1199538A (en) * | 1996-09-05 | 1998-11-18 | 株式会社东金 | Magnetic prepreg, its mfg. method and printed wiring board employing said prepreg |
| CN1518011A (en) * | 2002-12-26 | 2004-08-04 | ������������ʽ���� | Metal powder and compressed powder magnetic core using the metal powder |
| JP2006237506A (en) * | 2005-02-28 | 2006-09-07 | Sumitomo Bakelite Co Ltd | Magnetic material paste, inductor, and multilayer wiring board |
| CN101473388A (en) * | 2006-06-20 | 2009-07-01 | 株式会社村田制作所 | Laminated coil part |
| CN101901668A (en) * | 2009-05-27 | 2010-12-01 | 乾坤科技股份有限公司 | Inducer and production method thereof |
| CN104051145A (en) * | 2013-03-15 | 2014-09-17 | 三星电机株式会社 | Inductor and method for manufacturing the same |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108109807A (en) * | 2016-11-24 | 2018-06-01 | Tdk株式会社 | Electronic unit |
| CN108109807B (en) * | 2016-11-24 | 2021-06-25 | Tdk株式会社 | Electronic component |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104282417B (en) | 2018-02-02 |
| KR20150007766A (en) | 2015-01-21 |
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