WO2005032226A1 - 多層積層回路基板 - Google Patents
多層積層回路基板 Download PDFInfo
- Publication number
- WO2005032226A1 WO2005032226A1 PCT/JP2003/012431 JP0312431W WO2005032226A1 WO 2005032226 A1 WO2005032226 A1 WO 2005032226A1 JP 0312431 W JP0312431 W JP 0312431W WO 2005032226 A1 WO2005032226 A1 WO 2005032226A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- magnetic
- sheet
- winding
- dielectric
- laminated
- Prior art date
Links
- 238000004804 winding Methods 0.000 claims description 393
- 239000002131 composite material Substances 0.000 claims description 21
- 239000000696 magnetic material Substances 0.000 claims description 20
- 238000010030 laminating Methods 0.000 claims description 5
- 238000003475 lamination Methods 0.000 abstract description 24
- 238000009413 insulation Methods 0.000 description 35
- 230000004907 flux Effects 0.000 description 28
- 230000002093 peripheral effect Effects 0.000 description 28
- 230000008878 coupling Effects 0.000 description 14
- 238000010168 coupling process Methods 0.000 description 14
- 238000005859 coupling reaction Methods 0.000 description 14
- 238000004519 manufacturing process Methods 0.000 description 9
- 239000004020 conductor Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 238000007650 screen-printing Methods 0.000 description 5
- 229920002799 BoPET Polymers 0.000 description 4
- 239000002002 slurry Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 229920000139 polyethylene terephthalate Polymers 0.000 description 3
- 239000005020 polyethylene terephthalate Substances 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 238000007606 doctor blade method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 241000287828 Gallus gallus Species 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 244000309466 calf Species 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000012811 non-conductive material Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 235000011837 pasties Nutrition 0.000 description 1
- -1 polyethylene terephthalate Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/2804—Printed windings
-
- 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
-
- 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
- H05K1/00—Printed circuits
- H05K1/16—Printed circuits incorporating printed electric components, e.g. printed resistor, capacitor, inductor
- H05K1/165—Printed circuits incorporating printed electric components, e.g. printed resistor, capacitor, inductor incorporating printed inductors
-
- 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
- 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
- H05K3/46—Manufacturing multilayer circuits
- H05K3/4611—Manufacturing multilayer circuits by laminating two or more circuit boards
-
- 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
- H05K3/46—Manufacturing multilayer circuits
- H05K3/4688—Composite multilayer circuits, i.e. comprising insulating layers having different properties
Definitions
- the present invention relates to a multilayer laminated circuit board in the field of semiconductor technology, and more particularly, to a multilayer laminated circuit board having a laminated transformer formed by laminating sheets having electromagnetic characteristics to form a coil and a core.
- FIG. 13 is an exploded perspective view showing a conventional laminated transformer.
- FIG. 14 is a vertical sectional view taken along line XIV-XIV in FIG. 13 after lamination.
- the conventional laminated transformer 80 includes a primary winding magnetic sheet 82b, 82d having primary windings 81a, 81c formed thereon, and secondary windings 81b, 81d. And magnetic sheets 82a and 82g for sandwiching the magnetic sheets 82b to 82e, respectively. .
- a magnetic sheet 82 f for improving magnetic saturation characteristics is interposed between the magnetic sheet 82 e and the magnetic sheet 82 g.
- the magnetic sheets 82a to 82e are connected to the through-holes 90, 91, 92 connecting the primary windings 81a, 81c and the secondary windings 81b, 81d. Through holes 93, 94, 95 are provided.
- External electrodes 96 and 97 for the primary winding and external electrodes 98 and 99 for the secondary winding are provided on the lower surface of the magnetic sheet 82a.
- c magnetic sheets 82a to 82g filled with a conductor are cores of the laminated transformer 80.
- FIGS. 13 and 14 are schematic diagrams, strictly speaking, the number of turns of the primary windings 8 1 a and 8 1 c and the secondary windings 8 1 b and 8 1 d ⁇ through hole 9 0
- the positions of ⁇ 96 do not correspond between Fig. 13 and Fig. 14.
- the external electrode 96 in the order of the external electrode 96 ⁇ through hole 92 ⁇ primary winding 81 c ⁇ through hole 91 ⁇ primary winding 81 a ⁇ through hole 90 ⁇ external electrode 97 Alternatively, the current flows in the reverse order.
- the external electrode 99 on the secondary side of the laminated transformer 80, the external electrode 99 ⁇ through hole 95 ⁇ secondary winding 81 d ⁇ through hole 94 ⁇ secondary winding 81 b ⁇ through hole 93 ⁇ external electrode 9.
- the current flows in the order of 8, and vice versa.
- the current flowing through the primary windings 81a and 81c generates a magnetic flux 85 (Fig. 14) on the magnetic sheets 82a to 82g.
- the magnetic flux 85 generates an electromotive force corresponding to the turn ratio in the secondary windings 8 1 b and 8 1 d.
- the laminated transformer 80 operates.
- the self-inductance of the primary windings 81a and 81c is L1
- the self-inductance of the secondary windings 81b and 81d is L2
- the primary windings 81a and 81c is M
- the electromagnetic coupling coefficient k is defined by the following equation.
- the magnetic coupling coefficient k is one of the indicators of transformer performance. The larger the value, the smaller the leakage magnetic flux (leakage inductance), and the higher the power conversion efficiency.
- the multilayer transformer 80 has been mounted on a printed wiring board, for example, as an individual component. However, it is becoming difficult for such conventional technologies to meet the demand for further miniaturization of electronic devices.
- the magnetic layer (magnetic sheets 82c to 82e) is provided between the primary windings S1a and 81c and the secondary windings 81b and 81d.
- leakage magnetic flux 86 (Fig. 14) was generated, and a sufficient electromagnetic coupling coefficient k could not be obtained.
- a dielectric layer (not shown) is formed on the primary windings' 81a, 81c and on the secondary windings 81b, 81d by screen printing or pasting. ) To reduce the magnetic permeability of the magnetic layer by the substance diffusing from this dielectric layer Once ". ) Is considered.
- the dielectric windings applied on the primary windings 8 1a and 8 1c and on the secondary windings 8 lb and 81 d are added to the primary windings 8 1a and 8 1d.
- the conductive material eg, Ag particles
- the insulation between the windings 81b and between the secondary windings 81d may be reduced.
- the paste is in a liquid state by, for example, an organic solvent, so that the substance is easily diffused.
- the distance between the primary windings 81a and 81c and the secondary windings 81b and 81d is determined as "magnetic layer + dielectric layer". It becomes wider. This makes it easier for the leakage magnetic flux to enter the space, and conversely acts in the direction of reducing the electromagnetic coupling coefficient k. Therefore, it was extremely difficult to increase the electromagnetic coupling coefficient k in the conventional multilayer transformer.
- a main object of the present invention is to provide a technology for realizing further miniaturization of an electronic device by making full use of the advantages of the laminated transformer being light and small.
- Another object of the present invention is to provide a laminated transformer capable of increasing the electromagnetic coupling coefficient while maintaining the insulation between the windings. Disclosure of the invention
- the multilayer laminated circuit board according to the present invention incorporates a laminated transformer formed by laminating a magnetic sheet, a primary winding and a secondary winding, and a dielectric sheet made of a non-conductive material, and has a circuit pattern formed therein. It is equipped with a wiring sheet.) Further, in a preferred embodiment, the wiring sheet may be laminated above or below the laminated transformer, or a laminated transformer may be provided on a part of the wiring sheet. Furthermore, the laminated component sheet on which the laminated component is formed is further It may be provided, or a thick film and a chip passive element and a chip active element are mounted on the surface. At this time, the thick film or chip passive element or chip active element may be mounted on the surface.
- non-magnetic material as used herein means a substance having a magnetic permeability smaller than that of a magnetic sheet.
- Dielectric sheet means a sheet having at least a higher resistivity than a magnetic sheet, and may be called a dielectric sheet or an insulating sheet.
- multilayer transformers were mounted on printed wiring boards as individual components.However, the size of the multilayer transformer package and the reduction in wiring between the multilayer transformer and other components have reached their limits. I was Therefore, in the present invention, the laminated transformer is built in the multilayer laminated circuit board. As a result, since the multilayer laminated circuit board is packaged, the package of the multilayer transformer is omitted. Moreover, since wiring can be performed in the stacking direction, the area occupied by the wiring is reduced, and wiring between the multilayer transformer and other components is also minimized.
- a laminated transformer incorporated in a multilayer laminated circuit board has the following laminated body.
- the laminate comprises a first magnetic sheet, a first dielectric sheet laminated on the first magnetic sheet and made of a non-magnetic material having a through hole formed in the center, and a first dielectric sheet.
- a first winding which is located around the upper through hole and is made up of one or both of a primary winding and a secondary winding; and a first winding laminated on the first winding and having a first dielectric sheet.
- a plurality of the laminates are further laminated, and A magnetic sheet is also used as a first magnetic sheet in the laminated body thereon, and a through-hole connecting each of the plurality of primary windings and each of the plurality of secondary windings is provided on the magnetic sheet and the dielectric sheet. It may be.
- the dielectric sheet has the following advantages over a dielectric layer formed by applying a dielectric paste on the windings. 1. Since it is a solid sheet, it is not a paste, so the film thickness is uniform regardless of the presence or absence of windings. C Therefore, a sufficient film thickness can be ensured even in the parts with windings . 2. Since it is not pasty, there is very little diffusion material from the winding. Therefore, the insulation between the primary windings and the secondary windings does not deteriorate.
- a through hole is provided in the center of the dielectric sheet, and the size of the dielectric sheet is made smaller than that of the magnetic sheet. Accordingly, when the dielectric sheet is sandwiched between the pair of magnetic sheets, the magnetic sheets come into contact with each other at the center and the periphery of the dielectric sheet, so that the core of the magnetic sheet is formed. Since a dielectric sheet is interposed between the primary winding and the secondary winding, the insulation is excellent.
- the laminated transformer incorporated in the multilayer laminated circuit board according to a preferred embodiment of the present invention includes a dielectric sheet made of a non-magnetic material having a through hole formed in the center, and a dielectric sheet formed on one surface of the dielectric sheet and having a through hole.
- a first winding consisting of one or both of the primary winding and the secondary winding and a primary winding and a secondary winding which are located on the other surface of the dielectric sheet and around the through hole;
- a second winding consisting of one or both of the following windings, and a pair of dielectric sheets, the first winding and the second winding sandwiched therebetween and in contact with each other at the periphery of the dielectric sheet and through holes.
- a magnetic sheet may be a single sheet or a plurality of stacked sheets.
- the primary winding and the secondary winding face each other across the dielectric sheet, the primary winding and the secondary winding are alternately arranged on one surface of the dielectric sheet, and the primary winding is arranged on the other surface. Wires and secondary windings may be arranged alternately.
- a plurality of primary windings and secondary windings can be provided with these dielectric sheets interposed therebetween. At this time, a through-hole may be provided in the dielectric sheet for interconnecting the primary windings and the secondary windings.
- the magnetic layer is formed between the primary winding and the secondary winding, so the leakage magnetic flux is generated in this magnetic layer, and the electromagnetic coupling coefficient is reduced. .
- a nonmagnetic layer (dielectric sheet) is provided between the primary winding and the secondary winding. Since a core cannot be formed by only this, a core is formed by providing a through hole in the center of the dielectric sheet and bringing the pair of magnetic sheets into contact with the through hole and the peripheral edge of the dielectric sheet. Therefore, since the non-magnetic layer (dielectric sheet) is provided between the primary winding and the secondary winding in the laminated transformer of the present invention, the leakage magnetic flux can be suppressed. In addition, unlike conventional multilayer transformers, there is no need to apply a dielectric paste on the primary winding and the secondary winding to form a dielectric layer. The insulation between the primary winding and the secondary winding does not increase.
- the magnetic sheet further includes a magnetic frame housed in a peripheral edge of the dielectric sheet and a magnetic core housed in the through hole, and a pair of magnetic sheets sandwich the dielectric sheet and form a magnetic frame and a magnetic core. And may be in contact with each other through. Also in this case, the number of dielectric sheets may be one or plural (lamination). When there are a plurality of dielectric sheets, a plurality of primary windings and a plurality of secondary windings are provided with these dielectric sheets interposed therebetween. At this time, through holes for connecting the primary windings and the secondary windings may be provided in the dielectric sheet.
- a dielectric sheet is sandwiched between the first magnetic sheet and the second magnetic sheet, and a primary winding and a secondary winding are respectively formed on both surfaces of the dielectric sheet. positioned.
- the magnetic frame is accommodated in the periphery of the dielectric sheet, and the magnetic core is accommodated in the central through hole of the dielectric sheet. Therefore, the pair of magnetic sheets has few depressions at the periphery and the center of the dielectric sheet. Therefore, the pair of magnetic sheets does not need to be bent so much, so that the production is easy.
- the magnetic saturation characteristics are also improved. This effect becomes more noticeable as the number of laminated dielectric sheets increases.
- the thickness of the magnetic frame (total for multiple sheets), the thickness of the magnetic core (total for multiple sheets), and the thickness of the dielectric sheet (total for multiple sheets) match, an extremely flat laminated transformer can be obtained. Can be Therefore, even if the wiring sheet is stacked on the multilayer transformer, the distortion of the wiring sheet is suppressed, and the reliability of the wiring sheet is improved.
- the magnetic frame and the magnetic core may be made of a magnetic sheet connected to each other via a support.
- the magnetic frame and core can simultaneously formed, moreover laminated transformer incorporated in a multilayer laminated circuit board in preferred embodiments of the c the present invention capable of positioning at the time of stacking at the same time, the magnetic pattern center ⁇ Pi periphery A composite sheet in which a part other than the center and the periphery is made of a dielectric pattern made of a non-magnetic material; and one of a primary winding and a secondary winding located on one surface of the dielectric pattern and around the center.
- a second winding which is located on the other surface of the dielectric pattern and around the center and which is comprised of one or both of the primary winding and the secondary winding, It comprises a hybrid sheet, a pair of magnetic sheets sandwiching the first winding and the second winding and being in contact with each other via a magnetic pattern.
- the hybrid sheet may be a single sheet or a plurality of laminated sheets. If the primary winding and the secondary winding face each other across the dielectric pattern of the hybrid sheet, the primary winding and the secondary winding are alternately arranged on one surface of the hybrid sheet, and the other surface is formed on the other surface. The primary winding and the secondary winding may be alternately arranged. When there are a plurality of hybrid sheets, a plurality of primary windings and secondary windings can be formed with these hybrid sheets interposed. At this time, through holes for connecting the primary windings and the secondary windings may be provided in the hybrid sheet.
- the magnetic layer is formed between the primary winding and the secondary winding, a leakage magnetic flux is generated in the magnetic layer, so that the electromagnetic coupling coefficient is reduced. Therefore, in the laminated transformer according to the present invention, a space between the primary winding and the secondary winding is formed as a nonmagnetic layer (dielectric pattern). Since a core cannot be formed by this alone, the center and the periphery of the hybrid sheet were formed into a magnetic pattern, and the core was formed by bringing a pair of magnetic sheets into contact with this magnetic pattern. Therefore, in the laminated transformer according to the present invention, since the non-magnetic layer (dielectric pattern) is provided between the primary winding and the secondary winding, the leakage magnetic flux can be suppressed. -In addition, unlike conventional multilayer transformers, there is no need to apply a dielectric paste on the primary winding and the secondary winding to form a dielectric layer. The insulation between the primary winding and the secondary winding is not widened.
- the above-described hybrid sheet may be interposed between the first winding or the second winding and the magnetic sheet. This hybrid sheet serves to enhance the insulation of the primary or secondary winding.
- the hybrid sheet may have a thickness of the magnetic pattern equal to the thickness of the dielectric pattern.
- the film thickness of the hybrid sheet becomes constant everywhere, the pair of magnetic sheets sandwiching the hybrid sheet also becomes flat. Therefore, even if the wiring sheet is laminated on the multilayer transformer, the wiring and the distortion of the wiring sheet are suppressed, and the reliability of the wiring sheet is improved.
- the package of the laminated transformer can be omitted and the wiring between the laminated transformer and other components can be minimized. Therefore, the advantages of the laminated transformer being light, small and thin can be fully utilized, and further downsizing of the electronic device can be realized.
- the windings are arranged on the dielectric sheet, so that the thickness of the dielectric layer can be sufficiently ensured even in the portion where the windings exist.
- the dielectric sheet is solid and not in a paste form, the amount of diffusing material from the windings to the dielectric sheet is extremely small, which may degrade the insulation between the primary windings and the secondary windings. Absent. Therefore, the insulation between the windings can be greatly improved.
- the core made of the magnetic sheet can be formed by a simple configuration and a simple method.
- a dielectric sheet is provided between the primary winding and the secondary winding, and a through hole is provided in the center of the dielectric sheet.
- the distance between the primary winding and the secondary winding does not increase. Therefore, the electromagnetic coupling coefficient can be increased while maintaining the mutual insulation of the windings. Further, the insulation between the primary winding and the secondary winding can be improved by interposing the dielectric sheet in place of the conventional magnetic sheet.
- the pair of magnetic sheets sandwiching the dielectric sheet are in contact with each other at the peripheral edge of the dielectric sheet and the through hole, so that the magnetic sheet itself is formed. Functions as a magnetic core and a magnetic frame, so that the number of parts can be reduced.
- the magnetic frame is housed in the periphery of the dielectric sheet
- the magnetic core is housed in the through hole at the center of the dielectric sheet, and these are held by a pair of magnetic sheets.
- the bending of the magnetic sheet at the periphery and center of the dielectric sheet can be reduced. Therefore, the magnetic sheet does not need to be bent so much or at all, and thus the manufacturing can be facilitated.
- the cross-sectional area of the magnetic path can be sufficiently obtained, the magnetic saturation characteristics can be improved.
- the magnetic frame and the magnetic core are composed of the magnetic sheets connected via the support, so that the magnetic frame and the magnetic core can be formed simultaneously, and At the time of lamination Since alignment can be performed at the same time, manufacturing can be simplified.
- a laminated transformer in a multilayer laminated circuit board there is provided a laminated transformer in a multilayer laminated circuit board.
- a dielectric pattern of a hybrid sheet is provided between a primary winding and a secondary winding, and a center and a peripheral edge of the hybrid sheet are magnetic patterns.
- the conventional laminated transformer there is no need to apply a dielectric paste on the primary winding and the secondary winding to form a dielectric layer, so that the insulation between the primary windings and between the secondary windings is eliminated.
- the space between the primary winding and the secondary winding is not widened without deterioration of performance. Therefore, the electromagnetic coupling coefficient can be increased while maintaining the insulation between the winding cores.
- the insulating property between the primary winding and the secondary winding can be improved by interposing the dielectric pattern in place of the conventional magnetic individual sheet.
- both the dielectric pattern and the magnetic pattern are formed into a single composite sheet, the same structure is formed by laminating a dielectric sheet consisting of only a dielectric and a magnetic sheet consisting of only a magnetic substance. Compared with the case of forming, the number of sheets can be reduced and the lamination method can be simplified.
- the same hybrid sheet as described above is interposed between the primary winding or the secondary winding and the magnetic sheet.
- the primary winding or the secondary winding can be electrically protected, so that the insulation can be improved.
- the film thickness of the magnetic pattern is equal to the film thickness of the dielectric pattern
- the film thickness of the hybrid sheet becomes constant everywhere.
- the pair of magnetic sheets that hold the hybrid sheet 1 can be flattened. Therefore, a round pattern or the like can be formed on the magnetic sheet with high accuracy.
- FIG. 1 is an exploded perspective view showing a first embodiment of a multilayer laminated circuit board according to the present invention.
- FIG. 2 is a longitudinal sectional view taken along the line II-II in FIG. 1 after lamination.
- FIG. 3 is a partial cross-sectional view showing a second embodiment of the multilayer laminated circuit board according to the present invention, and
- FIG. 4 is a process chart showing a method for manufacturing the multilayer laminated circuit board of FIG.
- FIG. 5 is an exploded perspective view showing a third embodiment of a multilayer laminated circuit board according to the present invention
- FIG. 6 is a longitudinal sectional view taken along line VII-VII in FIG. 5 after lamination.
- FIG. 7 is an exploded perspective view showing a fourth embodiment of the multilayer laminated circuit board according to the present invention
- FIG. 8 is a longitudinal sectional view taken along line VIII-VIII in FIG. 7 after lamination.
- FIG. 9 is an exploded perspective view showing a fifth embodiment of the multilayer laminated circuit board according to the present invention
- FIG. 10 is a vertical cross-sectional view taken along line XX in FIG. 9 after lamination.
- FIG. 11 is an exploded perspective view showing a sixth embodiment of the multilayer laminated circuit board according to the present invention
- FIG. 12 is a vertical sectional view taken along line XII-XII in FIG. 11 after lamination.
- FIG. 13 is an exploded perspective view showing a conventional laminated transformer
- FIG. 14 is a longitudinal sectional view taken along line XIV-XIV in FIG. 13 after lamination.
- FIG. 1 is an exploded perspective view showing a first embodiment of a multilayer laminated circuit board according to the present invention.
- FIG. 2 is a vertical sectional view taken along the line II-II in FIG. 1 after lamination.
- description will be made based on these drawings.
- the multilayer laminated circuit board 1OA includes a laminated transformer 10, a laminated component sheet 30 on which laminated components are formed, and a wiring sheet 50 on which a circuit pattern is formed, which are laminated in this order. It is a thing.
- the package of the multilayer transformer 10 is omitted and the wiring between the multilayer transformer 10 and other components is minimized.
- the multilayer laminated circuit board 1 OA This is because the body is packaged, so that the package of the multilayer transformer 10 becomes unnecessary.
- the laminated transformer 10 may be provided in a part of the rooster line sheet as in a third embodiment described later.
- the lamination transformer 10 has a lamination body 15a.
- the laminated body 15a is made up of a magnetic sheet 11a and a dielectric for a primary winding made of a nonmagnetic material laminated on the magnetic sheet 11a and having a through hole 12a formed in the center.
- the sheet 13a, the primary winding 14a located around the through hole 12a on the dielectric sheet 13a, and the dielectric sheet 13 laminated on the primary winding 14a a magnetic sheet 11b in contact with the magnetic sheet 11a at the periphery and through hole 12a of a, and a nonmagnetic material laminated on the magnetic sheet 11b and having a through hole 12 formed in the center
- the magnetic sheet 11c in contact with the magnetic sheet 11b at the periphery of the dielectric sheet 13b and the through hole 12b.
- the magnetic sheets 11a and lib and the dielectric sheets 13a and 13b are provided with through holes 15 and 16 and the secondary winding 14b connecting the primary winding 14a. Through holes 17 and 18 for connection are provided. On the upper surface of the wiring sheet 50, external electrodes 19 and 20 for the primary winding and external electrodes 21 and 22 for the secondary winding are provided. The through holes 15 to 18 are filled with a conductor.
- the magnetic sheets 11 a to 11 c are the core of the laminated transformer 10.
- the laminated component sheet 30 is an example of a low-pass filter for blocking high-frequency noise at the secondary winding 14b.
- Reference numeral 30 denotes a dielectric sheet 13 c for improving electrical and magnetic insulation with the multilayer transformer 10, and a multilayer inductor 3 2 composed of magnetic sheets 11 d and lie and coil windings 31. And high dielectric constant dielectric sheet 13d and parallel flat
- a multilayer capacitor 34 composed of plate electrodes 33 a and 3 ′′ 3 b.
- the current flowing through the coil winding 31 generates a magnetic flux 35 (FIG. 2) in the magnetic sheets 11 d and 11 e.
- the voltage applied between the parallel plate electrodes 33a and 33b causes the parallel plate electrodes 33a and 33b to accumulate charges.
- the wiring sheet 50 has the external electrodes 19 to 22 of the multilayer transformer 10, the wiring line 51, the component lands 52, the multilayer resistor 53, etc., on the upper surface of the dielectric sheet 13e as an insulating substrate. It was formed. On the component land 52, a chip component 54 (FIG. 2) and the like are mounted.
- FIGS. 1 and 2 are schematic diagrams, strictly speaking, the number of turns of the primary winding 14a, the secondary winding 14b and the coil winding 31 and the wiring line 5 1.
- the positions of the component lands 52, the multilayer resistor 53, etc. do not correspond to those in Fig. 1 and Fig. 2.
- the film thickness direction vertical direction
- the width direction left and right directions).
- a current flows in the order of the external electrode 19 ⁇ the through hole 15 ⁇ the primary winding 14a ⁇ the through hole 16 ⁇ the external electrode 20 or vice versa.
- external electrode 21 ⁇ through hole 17 ⁇ secondary winding 14 b ⁇ through hole 18 ⁇ coil winding 3 1 ⁇ through hole 23 ⁇ external electrode 22
- the current flows in the order of,, or vice versa.
- the current flowing through the primary winding 14a generates a magnetic flux 24 (FIG. 2) in the magnetic sheets 11a to 11c.
- the magnetic flux 24 generates an electromotive force in the secondary winding 14b according to the turn ratio.
- the multilayer transformer 10 operates.
- the magnetic flux 24 does not interfere with the magnetic flux 35 because the dielectric sheet 13c is interposed.
- the exposed sheets 13a to 13b enhance the insulating properties of the primary winding 14a and the secondary winding 14b.
- the dielectric sheet 13a is between the outside and the primary winding 14a
- the dielectric sheet 13b is between the primary winding 14a and the secondary winding 14b. Is increasing.
- the primary winding 14a is arranged on the dielectric sheet 13a, and the secondary winding 14b is arranged on the induction sheet 13b.
- FIG. 2 shows the dielectric sheets 13a and 13 under the primary winding 14a and the secondary winding 14b in a depressed state.
- the thickness of the dielectric sheets 13a and 13b is uniform regardless of the presence or absence of the winding. 2. Since it is not a pace, the diffusion material from the primary winding 14a and the secondary winding 14b is extremely small. Therefore, the insulation between the primary windings 14a and between the secondary windings 14b does not deteriorate.
- the magnetic sheet 11c and the dielectric sheet 13b can be omitted.
- a dielectric sheet may be interposed between the dielectric sheet 13b and the magnetic sheet 11c in order to increase the insulation between the secondary winding 14 and the outside.
- FIG. 3 is a partial cross-sectional view showing a second embodiment of the multilayer laminated circuit board according to the present invention.
- description will be made based on this drawing. However, the same parts as those in FIG. 1 and FIG.
- the laminates 15b,... are further laminated on the laminate 15a.
- the magnetic sheet 11c is shared by both the laminates 15a and 15b.
- the laminate 15b is made up of the magnetic sheets 11c, 11f, llg, the dielectric sheets 13f, 13g, the primary winding 14c and the secondary winding.
- Line 14 d is provided.
- through-holes connecting the primary windings 14a, 14c,... And the secondary windings 14b, 14d,. ... and the dielectric sheets 13a, ... are provided.
- dielectric sheets 13a ... enhance the insulation of the primary windings 14a, 14c and the secondary windings 14b, 14d.
- dielectric sheet 13a is between the outside and primary winding 14a
- dielectric sheet 13b is primary winding 14a and secondary winding 1
- dielectric sheet 13f is between secondary winding 14b and primary winding 14c
- dielectric sheet 13g is primary winding 14c and secondary winding 14d In between, the insulation of each is enhanced.
- the laminated transformer 60 of the present embodiment also has the same operation and effects as the laminated transformer 10 of the first embodiment.
- the magnetic sheets 11a, ... have a film thickness of 80m, a width of 8mm, and a depth of 6mm.
- the dielectric sheets 13a, ... have a film thickness of 40111, a width of 7 mm, and a depth of 5 mm.
- the primary winding, wires 14a, ... and the secondary windings 14b, ... have a film thickness of 12 ⁇ m, a line width of 20 O ⁇ m, and a space between the lines of 150 ⁇ m.
- the practical number of laminated sheets constituting the laminated transformers 10 and 60 is about 10 to 50 sheets.
- FIG. 4 is a process chart showing a method for manufacturing the multilayer laminated circuit board of FIG. The following is a description based on FIGS. 1 and 4.
- a magnetic slurry is prepared (Step 61).
- the magnetic material is, for example, a Ni-C ⁇ -Zn system.
- a magnetic material sheet is formed by placing a magnetic material slurry on a PET (polyethylene terephthalate) film using a doctor blade method (step 62).
- the magnetic sheets are cut to obtain magnetic sheets 11a to lie (step 63).
- a low dielectric constant and a high dielectric constant nonmagnetic slurry are separately prepared (step 64).
- a non-magnetic sheet is formed by placing a non-magnetic slurry on the PET film using the doctor blade method (step 65).
- the nonmagnetic sheet is cut to obtain dielectric sheets 13c to 13e (step 66).
- the dielectric sheets 13c and 13e have a low dielectric constant, and the dielectric sheet 13d has a high dielectric constant.
- create a non-magnetic paste (glass paste) with a low dielectric constant (Step 67).
- the dielectric sheets 13a and 13b are prepared by placing a non-magnetic paste on the PET finolem using a screen printing method (step 68).
- through holes 15 are formed in the dielectric sheets 13a to 13e and the magnetic sheets 11a to 11e by pressing or the like. (Step 69).
- the resistor paste 53 is formed by screen-printing the resistor paste only on the dielectric sheet 13e (step 70).
- the primary winding 14a and the secondary winding 14b, the coil winding 31, the wiring line 51, the component land 52, and the like are formed by screen-printing the Ag-based conductive paste.
- the through holes 15 are filled with a conductor (step 71).
- the magnetic sheets 11 a to lie and the dielectric sheets 13 a to 13 e obtained in step 71 are peeled off from the PET film and laminated, and these are adhered to each other using an isostatic press to form a multilayer laminate.
- Circuit board 1 OA (Step 72).
- the multilayer laminated circuit board 10A is cut into a predetermined size (step 73).
- simultaneous firing is performed at around 900 ° C (Step 74).
- the method of manufacturing a multilayer laminated circuit board in each embodiment described later also conforms to the present embodiment. Therefore, description of the manufacturing method will be omitted in the embodiments described later.
- FIG. 5 is an exploded perspective view showing a third embodiment of the multilayer laminated circuit board according to the present invention.
- FIG. 6 is a vertical sectional view taken along line VI-VI in FIG. 5 after lamination.
- description will be made based on these drawings.
- the multilayer laminated circuit board 100 of the present embodiment has a laminate transformer 110 laminated on a wiring sheet 101 on which a circuit pattern is formed.
- the multilayer transformer circuit board 100 incorporates the multilayer transformer 110, thereby eliminating the package of the multilayer transformer 110 and minimizing the wiring between the multilayer transformer 110 and other components. Is limited.
- the wiring sheet 101 may be stacked on the multilayer transformer 110 as in the first embodiment described above.
- the distribution sheet 101 is formed by laminating a number of dielectric sheets 102a, 102b, 102c,... On the upper surface of the uppermost dielectric sheet 102a, the external electrodes 122 to 125 of the multilayer transformer 110, wiring lines 103, component lands 104, multilayer resistors 105, etc. are formed. ing. On the component land 104, a chip component 106 (FIG. 6) and the like are mounted. Internal dielectric
- FIG. 6 are formed with a wiring line 107, a through wire 108, a multilayer resistor 109, and the like. Note that a multilayer capacitor and a multilayer inductor (not shown) are formed on the wiring sheet 101.
- the laminated transformer 111 has a dielectric sheet 1 for a primary winding made of a non-magnetic material having a through-hole 111a formed in the center and a primary winding 112 formed around the through-hole 111a. 13 and a nonmagnetic material laminated on the dielectric sheet 113 and having a through-hole 111b formed in the center and a secondary winding 114 formed around the through-hole 111b.
- the dielectric sheet 1 15 for the next winding and the dielectric sheets 1 13 and 1 15 are sandwiched and the periphery and the through holes 1 1 1 a and 1 1 1 of the dielectric sheets 1 13 and 1 15 are sandwiched.
- Magnetic sheets 1 16 and 1 17 that are in contact with each other at b.
- the dielectric sheets 113, 114 and the magnetic sheet 111 are connected to the through holes 111, 119 connecting the primary winding 112, and the secondary winding 114, respectively.
- Through holes 12 0 and 12 1 are provided.
- On the lower surface of the magnetic sheet 1 16 are provided external electrodes 122, 123 for the primary winding and external electrodes 124, 125 for the secondary winding.
- a conductor is filled in the through holes 118 to 121.
- the magnetic sheets 1 16 and 1 17 are the core of the laminated transformer 110.
- FIG. 5 and 6 are schematic diagrams. Strictly speaking, the number and positions of the primary windings 112 and the secondary windings 114, as well as the through-holes 118 to 121, The positions of the wiring line 103, the component land 104, the multilayer resistor 105, etc. do not correspond between FIG. 5 and FIG. In FIG. 6, the film thickness direction (up and down directions) is shown larger than the width direction (left and right directions).
- the order of the external electrode 1 2 2 ⁇ through hole 1 1 8 ⁇ the next winding 1 1 2 ⁇ through hole 1 1 9 ⁇ external electrode 1 2 3, or vice versa The current flows in order.
- the order of the external electrode 124 ⁇ through hole 120 ⁇ secondary winding 114 ⁇ through hole 121 ⁇ external electrode 125, or vice versa The current flows in this order.
- the current flowing through the winding 1 12 generates a magnetic flux 1 26 (FIG. 6) in the magnetic sheets 1 16 and 1 17.
- the magnetic flux 126 generates an electromotive force in the secondary winding 114 according to the turn ratio. In this way, the multilayer transformer 110 operates.
- the space between the primary winding 112 and the secondary winding 114 is a nonmagnetic layer (dielectric sheet 115), the leakage magnetic flux can be suppressed.
- the insulation between the secondary windings 114 and the secondary windings 114 does not deteriorate, and the distance between the primary windings 112 and the secondary windings 114 does not increase. Therefore, the electromagnetic coupling coefficient k can be increased while maintaining the insulation between the windings.
- the insulation between the primary winding 112 and the secondary winding 114 is enhanced by the interposition of the dielectric sheet 115.
- the laminated transformer 110 in the present embodiment is suitable when the number of laminated dielectric sheets 113 and 114 is small. This is because if the number of laminated dielectric sheets 113, 114 is small, the curvature force S at the bent portion of the magnetic sheets 116, 117 becomes small, so that the manufacturing is easy, and the center sheet and the peripheral part are not. This is because the thickness of the magnetic layer can be sufficiently obtained.
- FIG. 7 is an exploded perspective view showing a fourth embodiment of the multilayer laminated circuit board according to the present invention.
- FIG. 8 is a vertical sectional view taken along line VIII-VIII in FIG. 7 after lamination.
- the laminated transformer 130 has a primary winding made of a non-magnetic material having a through hole 13 1 a formed in the center and a primary winding 13 2 a formed around the through hole 13 1 a.
- Sheet 1 3 3 and a dielectric sheet 1 for a primary winding made of a non-magnetic material having a through hole 1 3 1 b formed in the center and a primary winding 13 2 b formed around the through hole 1 3 1 b 3 4 and the dielectric sheet 1 3 3 and a through hole 1 3 5 a is formed in the center and a secondary winding 1 is formed around the through hole 1 3 5 a
- a dielectric sheet 13 7 made of a non-magnetic material and having a formed on it is laminated with a dielectric sheet 13 4, and a through hole 1 3 5 b is formed at the center and a through hole 1 3
- the magnetic frames 13 9a and 13 9b that fit in the periphery of 13 8 and the magnetic cores 14 0a that fit in 13 1a, 13 1b, 13 35a, and 13 35b 140 b and the dielectric sheets 13 3, 13 4, 13 7, and 13 8 are sandwiched, and the magnetic frames 13 a, 13 b and the magnetic cores 14 a, 14 0 b And magnetic sheets 14 1 and 14 2 that are in contact with each other through the intermediary.
- the magnetic frame 1339a and the magnetic core 140a are connected via four support portions 144a to form a magnetic sheet 144.
- the magnetic frame 1339b and the magnetic core 140b are connected via four support portions 144b to form a magnetic sheet 145.
- a dielectric sheet 1 having the same size as the dielectric sheet 13 7 and having a through hole 1 46 a formed in the center for protecting the secondary winding 1 4 7 are intervened.
- winding protection means improving the insulation of the winding.
- the dielectric sheets 1 3 3, 1 3 4, 1 3 7, 1 4 7 and the magnetic sheet 1 4 1 have through-holes 1 4 9 and 1 5 to connect the primary windings 13 2 a and 13 2 b. 0 and 15 1 are provided. Dielectric sheet 1 3 3 1 3 4 1 3 7 1
- the through holes 15 2, 15 3 and 15 4 for connecting the secondary windings 13 36 a and 13 36 are provided on 38, 1 47 and the magnetic sheet 14 1.
- On the lower surface of the magnetic sheet 141 external electrodes 155, 156 for the primary winding and external electrodes 157, 158 for the secondary winding are provided.
- the through holes 149 to 154 are filled with a conductor.
- the magnetic sheets 14 1, 14 2, 14 4, and 14 5 are the core of the laminated transformer 130.
- FIGS. 7 and 8 are schematic diagrams, strictly speaking, the primary winding 13
- the dielectric sheets 13 3, 1 3 4, 1 3 4, 1 3 7, 1 3 8, 1 4 7, 1 4 8 have a film thickness of 33 ⁇ m N a width of 7 mm and a depth of 5 mm.
- the primary windings 13 2 a and 13 2 b and the secondary windings 13 36 a and 13 36 b have a film thickness of 15 ⁇ m and a line width of 200 im.
- the practical number of laminated sheets of the laminated transformers 110 and 130 is about 10 to 50 sheets.
- the external electrode 15 6 ⁇ through hole 1 5 1 ⁇ primary winding 13 2 a ⁇ through hole 15 0 ⁇ secondary winding 13 2 b ⁇ Current flows in the order of 9 ⁇ external electrode 1 5 and vice versa.
- the external electrode 157 ⁇ sulfur metal 154 ⁇ secondary winding 136a ⁇ through hole 153 ⁇ secondary winding 136
- the haze flows in the order of b ⁇ through hole 15 2 ⁇ external electrode 15 8, or vice versa.
- the current flowing through the primary windings 13 2a and 13 2 generates a magnetic flux 15 9 (FIG. 8) in the magnetic sheets 14 1, 14 2, 14 4 and 14 45.
- the magnetic flux 159 generates an electromotive force according to the turns ratio in the secondary windings 13 a, 1.
- the multilayer transformer 130 operates.
- the non-magnetic material layer (the dielectric sheets 13 4, 13) is provided between the primary windings 13 2 a, 13 2 b and the secondary windings 13 36 a, 13 36 b. 7, 1
- the leakage magnetic flux can be suppressed.
- a dielectric paste is applied on the primary windings 1332a and 1332b and the secondary windings 1336a and 1336b to form a dielectric layer. Deterioration of insulation of primary windings 1 3 2a, primary windings 13 2b, secondary windings 13 6a, and secondary windings 1 36 b In addition, the distance between the primary windings 1332a and 1332b and the secondary windings 1336a and 1336b does not increase. Therefore, the electromagnetic coupling coefficient k can be increased while maintaining the insulation between the windings. In addition to this, the insulation between the primary windings 1332a and 1332b and the secondary windings 1336a and 1336b is improved by the interposition of the dielectric sheets 1337 and 1338. Increase.
- the laminated transformer 130 of the present embodiment is suitable when the number of laminated dielectric sheets 133,... Is large. This is because even if the number of laminated dielectric sheets 13 3,... Is large, the magnetic frames 13 9 a and 13 9 b fit around the periphery of the dielectric sheets 13 3,. Since the magnetic cores 140a and 140b fit in the magnetic sheet 1401 and 142, the magnetic sheets 141 and 142 hardly bend, so that the manufacturing is easy and the magnetic layers at the center and the outer edge are formed. This is because the thickness can be obtained sufficiently.
- the magnetic frame 1339a and the magnetic core 140a may be separated from each other without being connected by the support portion 144a. The same applies to the magnetic frame 1339b and the magnetic core 140b.
- the dielectric sheets 147 and 148 may be omitted.
- Magnetic sheet 1
- 4 4 and 1 4 5 may be only one of them.
- FIG. 9 is an exploded perspective view showing a fifth embodiment of the multilayer laminated circuit board according to the present invention.
- FIG. 10 is a vertical sectional view taken along line XX in FIG. 1 after lamination.
- description will be made based on these drawings.
- the multilayer laminated circuit board of the present embodiment is the same as the first and third embodiments except for the laminated transformer 210. Therefore, only the multilayer transformer 210 will be described.
- the laminated transformer 210 is composed of a central magnetic z-turn 21a and a peripheral magnetic pattern 2 12a formed at the center and the periphery, respectively, and a nonmagnetic dielectric pattern 2 formed at a portion other than the center and the periphery.
- the composite sheet 2 14a composed of 13a and the central magnetic pattern 2 11b and the peripheral magnetic pattern 2 12b formed on the central and peripheral edges, respectively, are formed on portions other than the central and peripheral edges.
- a composite sheet 2 14 b composed of a nonmagnetic dielectric pattern 2 13 b, a primary winding 2 15 a located on one surface of the dielectric pattern 2 13 a and around the center, and a dielectric Secondary windings 2 15 b located on one side of the pattern 2 13 b and around the center, hybrid sheets 2 14 a and 2 14 b, primary windings 2 15 a and secondary
- the windings 2 15 b are sandwiched and the center magnetic, ⁇ ° turn 2 11 a, 2 1 1 b and the peripheral magnetic patterns 2 1 2 a, 2 1 2 b It is obtained by a pair of magnetic sheet 2 1 6 a, 2 1 6 b in contact. That is, the primary winding 2 15 a is located on the other surface of the dielectric pattern 2 13 b, and the secondary winding 2 15 b is located on one surface of the dielectric pattern 2 13 b.
- the primary winding 2 15 a is located on the other surface of the dielectric pattern 2 13 b
- the composite sheet 2 14 a, 2 14 b and the magnetic sheet 2 16 a have through holes 2 18, 2 19 to connect the primary winding 2 15 a, and the secondary winding. There are provided through holes 220 and 221 that connect the springs 215b. On the lower surface of the magnetic sheet 2 16a, external electrodes 222, 223 for the primary winding and external electrodes 222, 225 for the secondary winding are provided. A conductor is filled in the through holes 218 to 221.
- the center magnetic patterns 2 11 a and 2 11 b, the peripheral magnetic patterns 2 12 a and 2 12 b and the magnetic sheets 2 16 and 2 17 form the core of the multilayer transformer 210. I have.
- FIGS. 9 and 10 are schematic diagrams, strictly speaking, the number of turns of the primary winding 2 15 a and the secondary winding 2 15 b ⁇ the position of the through holes 2 18 to 22 1
- FIG. 9 and FIG. 10 do not correspond.
- the thickness direction vertical direction
- the width direction horizontal direction
- the order of the external electrode 2 2 2 ⁇ through hole 2 18 ⁇ next winding 2 15 a ⁇ through hole 2 1 9 ⁇ external electrode 2 2 3 Alternatively, the current flows in the reverse order.
- the order of the external electrode 2 24 ⁇ through hole 2 20 ⁇ secondary winding 2 15 b ⁇ through hole 2 2 1 ⁇ external electrode 2 25 Alternatively, the current flows in the reverse order.
- the current flowing through the primary winding 2 15a generates a magnetic flux 2 26 (Fig. 10) on the magnetic sheets 2 16a and 2 16b.
- the magnetic flux 2 26 generates an electromotive force in the secondary winding 2 15 b according to the turn ratio.
- the multilayer transformer 210 operates.
- the leakage magnetic flux can be suppressed.
- ⁇ between the primary winding 2 15a and the secondary winding 2 15b is a nonmagnetic layer (dielectric pattern 2 13b)
- the leakage magnetic flux can be suppressed.
- the insulation between the two windings a and the secondary winding .2b is not degraded, and the distance between the primary winding 2a and the secondary winding 2b is not widened. Therefore, the electromagnetic coupling coefficient k can be increased while maintaining the insulation between the windings.
- the interposition of the dielectric pattern 2 13 b increases the insulation '1' between the primary winding 2 15 a and the secondary winding 2 15 b.
- the film thickness of the central magnetic pattern 2 11 a and the peripheral magnet raw pattern 2 12 a is equal to the film thickness of the dielectric pattern 2 13 b.
- the composite sheet 2 14 b the film thickness of the hybrid sheets 2 14 a and 2 14 b is constant everywhere, and a pair of magnetic sheets 2 16 a and 2 16 b sandwiching the hybrid sheets 2 14 a and 2 14 b Also becomes flat.
- the composite sheet 2 14 a is obtained by forming a central magnetic pattern 2 1 a and a peripheral magnetic pattern 2 1 2 a on a single PET film by screen printing, and peeling this from the PET film. .
- the hybrid sheet 2 14 a By forming the primary winding 2 15 a and the secondary winding 2 15 on both sides of the hybrid sheet 2 14 b, the hybrid sheet 2 14 a can be omitted.
- the secondary winding 2 15 b may be formed not on the hybrid sheet 2 14 b but on the magnetic sheet 2 16 b.
- Secondary winding 2 1 5 b and magnetic sheet A composite sheet for improving the insulation of the secondary winding 215b may be interposed between the composite sheet 216 and the contact 216b.
- the dimensions of each component are in accordance with the later described sixth embodiment.
- FIG. 11 is an exploded perspective view showing a sixth embodiment of the multilayer laminated circuit board according to the present invention.
- FIG. 12 is a vertical sectional view taken along the line XII—XII in FIG. 11 after lamination.
- description will be made based on these drawings.
- the multilayer laminated circuit board of the present embodiment is the same as the first and third embodiments except for the laminated transformer 230. Therefore, only the multilayer transformer 230 will be described.
- the laminated transformer 230 includes a central magnetic pattern 23 1 a and a peripheral magnetic pattern 23 2 a formed at the center and a peripheral edge, respectively, and a non-magnetic dielectric pattern 23 formed at a portion other than the central and peripheral edges.
- 3a a composite sheet 234a for forming a primary winding, and a central magnetic pattern 231b and a peripheral magnetic pattern 232b formed on the central and peripheral edges, respectively, and a composite sheet other than the central and peripheral edges.
- a composite sheet for forming a secondary winding composed of a non-magnetic dielectric pattern formed on a portion thereof; and a central magnetic pattern formed on a center and a peripheral edge, respectively.
- a composite sheet for forming a primary winding composed of a peripheral magnetic pattern, a non-magnetic dielectric pattern formed in a portion other than the center and the periphery, and a center and a periphery.
- Center magnetic pattern 23 1d and peripheral magnetic pattern A composite sheet 2 34 d for forming a secondary winding composed of 2 3 2 d and a dielectric pattern 2 33 d of a non-magnetic material formed in portions other than the center and the periphery, and formed on the center and the periphery, respectively.
- the primary winding 235a is located on the other surface of the dielectric pattern 233b
- the secondary winding 235b is located on one surface of the dielectric pattern 233b
- the secondary winding 2 3 5b is located on the other side of the dielectric pattern 2 3 3c
- the primary winding 2 3 5c is located on one side of the dielectric pattern 2 3 3c
- the primary winding 2 In other words, 35 c is located on the other surface of the dielectric pattern 23 3 d
- the secondary winding 23 35 d is located on one surface of the dielectric pattern 23 3 d.
- the composite sheet 2 3 4 a to 2 3 4 c and the magnetic sheet 2 3 6 a have through holes 2 4 0, 2 4 1, 2 4 2 to connect the primary windings 2 3 5 a and 2 3 5 c. S is provided.
- the composite sheet 2 3 4 a to 2 3 4 d and the magnetic sheet 2 3 6 a have through holes 2 4 3, 2 4 4, 2 4 to connect the secondary windings 2 3 5 b and 2 3 5 d. 5 are provided.
- External electrodes 24 6 and 24 7 for the primary winding and external electrodes 24 8 and 24 9 for the secondary winding are provided on the lower surface of the magnetic sheet 2 36 a.
- a conductor is filled in the through holes 240 to 245.
- Center magnetic pattern 2 3 1 a to 2 3 e, peripheral magnetic pattern 2 3 2 a to 2 3 2 e and magnetic sheet 2 3 6 a, 2 3 6 b force Laminated transformer 2 3 0 core and Has become.
- FIGS. 11 and 12 are schematic diagrams, strictly speaking, the number of turns of the primary windings 2 35 a, 2 35 c and the secondary windings 2 35 b, 2 35 d
- the positions of the through holes 240 to 245 do not correspond between FIG. 11 and FIG. In FIG. 12, the film thickness direction (vertical direction) is shown larger than the width direction (horizontal direction).
- the magnetic sheets 2336a and 2336b have a thickness of 100 ⁇ m, a width of 8 mm, and a depth of 6 mm.
- Hybrid sea Each of the specimens 234a to 234e has a thickness of 50 ⁇ m, a width of 8 mm, and a depth of 6 mm.
- the primary windings 2 35 a and 2 35 c and the secondary windings 2 35 b and 2 35 d have a thickness of 15 / zm and a line width of 200 ⁇ m.
- the practical number of laminated sheets of the laminated transformers 210 and 230 is about 10 to 50 sheets.
- the current flowing through the primary windings 2 3 5 a and 2 3 5 c is the central magnetic pattern 2 3 1 a to 2 3 e, the peripheral magnetic pattern 2 3 2 a to 2 3 2 e and the magnetic sheet 2 3 6
- a magnetic flux of 250 (Fig. 12) is generated at a and 236b.
- the magnetic flux 250 generates an electromotive force corresponding to the turns ratio in the secondary windings 2 35 b, 2
- the multilayer transformer 230 operates.
- the nonmagnetic layer (dielectric pattern 2333b to 2333d) is provided between 35b and 2335d, the leakage magnetic flux can be suppressed.
- a dielectric paste is applied on the primary windings 235a, 235c and the secondary windings 235b, 235d to form a dielectric layer. Since there is no need to form, the insulation between the primary windings 2 35 a, between the primary windings 2 35 c, between the secondary windings 2 35 b, and between the secondary windings 2 35 d deteriorates. Neither does the distance between the primary windings 2 35 a and 2 35 c and the secondary windings 2 35 b and 2 35 d increase.
- the electromagnetic coupling coefficient k can be increased while maintaining the insulation between the windings.
- the presence of the dielectric patterns 234b to 234d allows the primary windings 235a and 235c to be connected to the secondary windings 235b and 235d. Insulation also increases.
- the composite sheet 2 34 a is composed of the central magnetic pattern 2
- the thickness of the dielectric pattern 233a is equal to the thickness of the dielectric pattern 233a.
- the hybrid sheets 2 3 4 b to 2 3 4 e As a result, the thickness of the composite sheet 2 3 4 a to 2 3 4 e becomes constant everywhere, so that a pair of magnetic sheets 2 3 6 a and 2 3 6 b sandwiching the composite sheet 2 3 4 a to 2 3 4 e Also becomes flat.
- the present invention is not limited to the first to sixth embodiments.
- the number of sheets, the number of primary windings and the number of secondary windings may be any.
- the shape of the primary winding and the secondary winding is not limited to a spiral shape, but may be a shape in which a number of L-shaped ones are stacked.
- the multilayer laminated circuit board of the present invention it is possible to further reduce the size of an electronic device by fully utilizing the advantages of the laminated transformer being light and small.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Coils Or Transformers For Communication (AREA)
- Parts Printed On Printed Circuit Boards (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005509194A JPWO2005032226A1 (ja) | 2003-09-29 | 2003-09-29 | 多層積層回路基板 |
US10/573,633 US7375609B2 (en) | 2003-09-29 | 2003-09-29 | Multilayer laminated circuit board |
PCT/JP2003/012431 WO2005032226A1 (ja) | 2003-09-29 | 2003-09-29 | 多層積層回路基板 |
AU2003266683A AU2003266683A1 (en) | 2003-09-29 | 2003-09-29 | Multilayer laminated circuit board |
CNA038271850A CN1860833A (zh) | 2003-09-29 | 2003-09-29 | 多层层叠电路基板 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2003/012431 WO2005032226A1 (ja) | 2003-09-29 | 2003-09-29 | 多層積層回路基板 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005032226A1 true WO2005032226A1 (ja) | 2005-04-07 |
Family
ID=34385882
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2003/012431 WO2005032226A1 (ja) | 2003-09-29 | 2003-09-29 | 多層積層回路基板 |
Country Status (5)
Country | Link |
---|---|
US (1) | US7375609B2 (ja) |
JP (1) | JPWO2005032226A1 (ja) |
CN (1) | CN1860833A (ja) |
AU (1) | AU2003266683A1 (ja) |
WO (1) | WO2005032226A1 (ja) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007131884A1 (de) * | 2006-05-16 | 2007-11-22 | Osram Gesellschaft mit beschränkter Haftung | Induktives bauelement und verfahren zum herstellen eines induktiven bauelements |
EP1916677A1 (en) * | 2006-10-25 | 2008-04-30 | Laird Technologies AB | Transformer and method of making a transformer |
US7907044B2 (en) | 2006-01-31 | 2011-03-15 | Hitachi Metals, Ltd. | Laminate device and module comprising same |
JP2013070035A (ja) * | 2011-09-22 | 2013-04-18 | Ibiden Co Ltd | 多層プリント配線板 |
JP2013236046A (ja) * | 2012-04-12 | 2013-11-21 | Shinko Electric Ind Co Ltd | 配線基板、及び、配線基板の製造方法 |
JP2018519758A (ja) * | 2015-06-30 | 2018-07-19 | トゥルンプフ ヒュッティンガー ゲゼルシャフト ミット ベシュレンクテル ハフツング ウント コンパニー コマンディートゲゼルシャフトTRUMPF Huettinger GmbH + Co. KG | 高周波増幅器装置 |
US10660193B2 (en) | 2016-08-03 | 2020-05-19 | Kabushiki Kaisha Toyota Jidoshokki | Multilayer substrate |
US10714313B2 (en) | 2015-06-30 | 2020-07-14 | Trumpf Huettinger Gmbh + Co. Kg | High frequency amplifier apparatuses |
Families Citing this family (60)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7982436B2 (en) * | 2002-12-10 | 2011-07-19 | Pure Energy Solutions, Inc. | Battery cover with contact-type power receiver for electrically powered device |
WO2006035511A1 (ja) * | 2004-09-29 | 2006-04-06 | Tadahiro Ohmi | チップ素子 |
JP4547703B2 (ja) * | 2004-11-19 | 2010-09-22 | ミネベア株式会社 | 高圧トランス |
US7471180B2 (en) * | 2005-04-21 | 2008-12-30 | Pstek Co., Ltd. | Transformer having multi-layered winding structure |
TWI354302B (en) * | 2006-05-26 | 2011-12-11 | Delta Electronics Inc | Transformer |
CN101356599A (zh) * | 2006-08-07 | 2009-01-28 | 株式会社村田制作所 | 层叠线圈元件及其制造方法 |
CN101578670B (zh) * | 2007-01-24 | 2012-05-02 | 株式会社村田制作所 | 层叠线圈元器件及其制造方法 |
JP4859700B2 (ja) * | 2007-02-20 | 2012-01-25 | セイコーエプソン株式会社 | コイルユニットおよび電子機器 |
US20080238602A1 (en) * | 2007-03-30 | 2008-10-02 | Gerhard Schrom | Components with on-die magnetic cores |
JP5118394B2 (ja) * | 2007-06-20 | 2013-01-16 | パナソニック株式会社 | 非接触電力伝送機器 |
TWM335792U (en) * | 2007-08-16 | 2008-07-01 | Aflash Technology Co Ltd | Device structure of IC |
DE102007044602A1 (de) * | 2007-09-19 | 2009-04-23 | Continental Automotive Gmbh | Multilayer-Leiterplatte und Verwendung einer Multilayer-Leiterplatte |
CN101981635B (zh) * | 2008-04-08 | 2013-09-25 | 株式会社村田制作所 | 电子元器件 |
JP4343254B1 (ja) * | 2008-06-02 | 2009-10-14 | 株式会社東芝 | 多層プリント配線基板 |
KR101267857B1 (ko) * | 2008-06-12 | 2013-05-27 | 가부시키가이샤 무라타 세이사쿠쇼 | 전자 부품 |
DE102008049756A1 (de) * | 2008-09-30 | 2010-05-27 | Osram Gesellschaft mit beschränkter Haftung | Schaltungsträger mit Transformator |
US8446243B2 (en) * | 2008-10-31 | 2013-05-21 | Infineon Technologies Austria Ag | Method of constructing inductors and transformers |
KR101609597B1 (ko) * | 2009-02-16 | 2016-04-07 | 삼성디스플레이 주식회사 | 회로기판 및 이를 갖는 표시패널 어셈블리 |
JP5339974B2 (ja) * | 2009-03-11 | 2013-11-13 | 新光電気工業株式会社 | インダクタ装置及びその製造方法 |
EP2242066A1 (en) * | 2009-04-17 | 2010-10-20 | Nxp B.V. | Inductive components for dc/dc converters and methods of manufacture thereof |
JP5168234B2 (ja) * | 2009-05-29 | 2013-03-21 | Tdk株式会社 | 積層型コモンモードフィルタ |
US8513771B2 (en) | 2010-06-07 | 2013-08-20 | Infineon Technologies Ag | Semiconductor package with integrated inductor |
ITTO20110295A1 (it) * | 2011-04-01 | 2012-10-02 | St Microelectronics Srl | Dispositivo ad induttore integrato ad elevato valore di induttanza, in particolare per l'uso come antenna in un sistema di identificazione a radiofrequenza |
CN102833946B (zh) * | 2011-06-16 | 2015-06-24 | 相互股份有限公司 | 具有线圈结构环绕埋入元件的多层电路板及其制造方法 |
KR101850806B1 (ko) * | 2011-07-22 | 2018-04-20 | 히타치 긴조쿠 가부시키가이샤 | 안테나 |
TWI441205B (zh) * | 2011-09-23 | 2014-06-11 | Inpaq Technology Co Ltd | 多層螺旋結構之共模濾波器及其製造方法 |
US9724211B1 (en) | 2012-06-04 | 2017-08-08 | Christopher C. Snell | Prosthetic devices having electronic display and methods of fabrication thereof |
US8824161B2 (en) * | 2012-06-15 | 2014-09-02 | Medtronic, Inc. | Integrated circuit packaging for implantable medical devices |
US11213690B2 (en) | 2012-06-15 | 2022-01-04 | Medtronic, Inc. | Wafer level packages of high voltage units for implantable medical devices |
US9136213B2 (en) * | 2012-08-02 | 2015-09-15 | Infineon Technologies Ag | Integrated system and method of making the integrated system |
US9921640B2 (en) * | 2012-09-28 | 2018-03-20 | Intel Corporation | Integrated voltage regulators with magnetically enhanced inductors |
US20160307695A1 (en) * | 2014-03-19 | 2016-10-20 | Ionel Jitaru | Magnetic structures for low leakage inductance and very high efficiency |
DE102014210013A1 (de) | 2014-05-26 | 2015-11-26 | Schaeffler Technologies AG & Co. KG | Magnetische Platine und Verfahren zu deren Herstellung |
US10097054B2 (en) | 2015-01-30 | 2018-10-09 | Honeywell International Inc. | Methods for manufacturing high temperature laminated stator cores |
KR101762023B1 (ko) * | 2015-11-19 | 2017-08-04 | 삼성전기주식회사 | 코일 부품 및 그 실장 기판 |
WO2017111910A1 (en) | 2015-12-21 | 2017-06-29 | Intel Corporation | High performance integrated rf passives using dual lithography process |
KR101825695B1 (ko) * | 2016-05-16 | 2018-02-05 | 주식회사 모다이노칩 | 회로 보호 소자 |
CN107667407B (zh) * | 2016-05-31 | 2019-06-04 | 新电元工业株式会社 | 线圈构造体以及磁性部件 |
US9859357B1 (en) * | 2016-07-14 | 2018-01-02 | International Business Machines Corporation | Magnetic inductor stacks with multilayer isolation layers |
JP6558329B2 (ja) * | 2016-09-01 | 2019-08-14 | 株式会社村田製作所 | 電子部品 |
US10283249B2 (en) | 2016-09-30 | 2019-05-07 | International Business Machines Corporation | Method for fabricating a magnetic material stack |
JP6400803B2 (ja) * | 2016-10-28 | 2018-10-03 | サムソン エレクトロ−メカニックス カンパニーリミテッド. | コイル部品 |
US10373747B2 (en) * | 2017-01-11 | 2019-08-06 | International Business Machines Corporation | Magnetic inductor stacks |
US10593449B2 (en) | 2017-03-30 | 2020-03-17 | International Business Machines Corporation | Magnetic inductor with multiple magnetic layer thicknesses |
US10607759B2 (en) | 2017-03-31 | 2020-03-31 | International Business Machines Corporation | Method of fabricating a laminated stack of magnetic inductor |
US10597769B2 (en) | 2017-04-05 | 2020-03-24 | International Business Machines Corporation | Method of fabricating a magnetic stack arrangement of a laminated magnetic inductor |
US10347411B2 (en) | 2017-05-19 | 2019-07-09 | International Business Machines Corporation | Stress management scheme for fabricating thick magnetic films of an inductor yoke arrangement |
KR101998269B1 (ko) * | 2017-09-26 | 2019-09-27 | 삼성전기주식회사 | 코일 부품 |
JP7352363B2 (ja) * | 2018-03-16 | 2023-09-28 | 日東電工株式会社 | 磁性配線回路基板およびその製造方法 |
JP6948757B2 (ja) * | 2018-06-01 | 2021-10-13 | 株式会社タムラ製作所 | 電子部品 |
EP3584813A1 (en) | 2018-06-20 | 2019-12-25 | AT & S Austria Technologie & Systemtechnik Aktiengesellschaft | Component carrier with integrated inductor and manufacturing method |
WO2020035967A1 (ja) * | 2018-08-17 | 2020-02-20 | 株式会社村田製作所 | スイッチング電源装置 |
US11437188B2 (en) | 2018-09-25 | 2022-09-06 | Honeywell International Inc. | Low porosity glass coatings formed on coiled wires, high temperature devices containing the same, and methods for the fabrication thereof |
KR102691323B1 (ko) * | 2018-09-28 | 2024-08-05 | 삼성전기주식회사 | 코일 전자 부품 |
JP6919641B2 (ja) | 2018-10-05 | 2021-08-18 | 株式会社村田製作所 | 積層型電子部品 |
JP2020061410A (ja) * | 2018-10-05 | 2020-04-16 | 株式会社村田製作所 | 積層型電子部品 |
JP2020161645A (ja) * | 2019-03-26 | 2020-10-01 | 国立大学法人信州大学 | 電子部品 |
CN112151545B (zh) | 2019-06-28 | 2024-05-14 | 西部数据技术公司 | 包括磁性压持层的半导体设备 |
FR3127841A1 (fr) * | 2021-10-01 | 2023-04-07 | Stmicroelectronics (Tours) Sas | Transformateur dans un substrat de boitier |
CN113972057A (zh) * | 2021-12-13 | 2022-01-25 | 潜润电子科技(苏州)有限公司 | 一种用于串联谐振电路的多层板变压器 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07201566A (ja) * | 1993-12-28 | 1995-08-04 | Taiyo Yuden Co Ltd | 積層型電子部品 |
JPH08241814A (ja) * | 1995-03-02 | 1996-09-17 | Murata Mfg Co Ltd | 薄型コイルおよびトランス |
DE10122393A1 (de) * | 2001-05-09 | 2002-11-14 | Philips Corp Intellectual Pty | Flexible Leiterfolie mit einer elektronischen Schaltung |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1340234A1 (en) * | 2000-11-21 | 2003-09-03 | Koninklijke Philips Electronics N.V. | System, printed circuit board, charger device, user device, and apparatus |
JP4214700B2 (ja) * | 2002-01-22 | 2009-01-28 | 株式会社村田製作所 | コモンモードチョークコイルアレイ |
KR100466884B1 (ko) * | 2002-10-01 | 2005-01-24 | 주식회사 쎄라텍 | 적층형 코일 부품 및 그 제조방법 |
-
2003
- 2003-09-29 JP JP2005509194A patent/JPWO2005032226A1/ja not_active Withdrawn
- 2003-09-29 WO PCT/JP2003/012431 patent/WO2005032226A1/ja active Application Filing
- 2003-09-29 US US10/573,633 patent/US7375609B2/en not_active Expired - Fee Related
- 2003-09-29 AU AU2003266683A patent/AU2003266683A1/en not_active Abandoned
- 2003-09-29 CN CNA038271850A patent/CN1860833A/zh active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07201566A (ja) * | 1993-12-28 | 1995-08-04 | Taiyo Yuden Co Ltd | 積層型電子部品 |
JPH08241814A (ja) * | 1995-03-02 | 1996-09-17 | Murata Mfg Co Ltd | 薄型コイルおよびトランス |
DE10122393A1 (de) * | 2001-05-09 | 2002-11-14 | Philips Corp Intellectual Pty | Flexible Leiterfolie mit einer elektronischen Schaltung |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7907044B2 (en) | 2006-01-31 | 2011-03-15 | Hitachi Metals, Ltd. | Laminate device and module comprising same |
US8018313B2 (en) | 2006-01-31 | 2011-09-13 | Hitachi Metals, Ltd. | Laminate device and module comprising same |
WO2007131884A1 (de) * | 2006-05-16 | 2007-11-22 | Osram Gesellschaft mit beschränkter Haftung | Induktives bauelement und verfahren zum herstellen eines induktiven bauelements |
JP2009537976A (ja) * | 2006-05-16 | 2009-10-29 | オスラム ゲゼルシャフト ミット ベシュレンクテル ハフツング | 誘導素子及び誘導素子を製造するための方法 |
US7973631B2 (en) | 2006-05-16 | 2011-07-05 | Osram Gesellschaft mit beschränkter Haftung | Inductive component and method for manufacturing an inductive component |
KR101433838B1 (ko) * | 2006-05-16 | 2014-08-27 | 지멘스 악티엔게젤샤프트 | 인덕티브 구성요소 및 상기 인덕티브 구성요소를 제조하기 위한 방법 |
EP1916677A1 (en) * | 2006-10-25 | 2008-04-30 | Laird Technologies AB | Transformer and method of making a transformer |
JP2013070035A (ja) * | 2011-09-22 | 2013-04-18 | Ibiden Co Ltd | 多層プリント配線板 |
JP2013236046A (ja) * | 2012-04-12 | 2013-11-21 | Shinko Electric Ind Co Ltd | 配線基板、及び、配線基板の製造方法 |
JP2018519758A (ja) * | 2015-06-30 | 2018-07-19 | トゥルンプフ ヒュッティンガー ゲゼルシャフト ミット ベシュレンクテル ハフツング ウント コンパニー コマンディートゲゼルシャフトTRUMPF Huettinger GmbH + Co. KG | 高周波増幅器装置 |
US10714313B2 (en) | 2015-06-30 | 2020-07-14 | Trumpf Huettinger Gmbh + Co. Kg | High frequency amplifier apparatuses |
US10660193B2 (en) | 2016-08-03 | 2020-05-19 | Kabushiki Kaisha Toyota Jidoshokki | Multilayer substrate |
Also Published As
Publication number | Publication date |
---|---|
AU2003266683A1 (en) | 2005-04-14 |
US20070030659A1 (en) | 2007-02-08 |
JPWO2005032226A1 (ja) | 2006-12-14 |
CN1860833A (zh) | 2006-11-08 |
US7375609B2 (en) | 2008-05-20 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2005032226A1 (ja) | 多層積層回路基板 | |
US8050045B2 (en) | Electronic component and method of manufacturing the same | |
US7375608B2 (en) | Solid electrolytic capacitor and manufacturing method thereof | |
US7696849B2 (en) | Electronic component | |
CN104575935B (zh) | 电感器及其制造方法 | |
US8484829B2 (en) | Methods for manufacturing magnetic components having low probile layered coil and cores | |
US8325003B2 (en) | Common mode filter and method of manufacturing the same | |
KR20140137306A (ko) | 코일 부품 및 그 제조방법 | |
JP7369546B2 (ja) | コイル部品 | |
JP2002270428A (ja) | 積層チップインダクタ | |
JP2014038883A (ja) | 電子部品および電子部品の製造方法 | |
JP2007088461A5 (ja) | ||
KR20180046262A (ko) | 코일 전자 부품 | |
KR102618476B1 (ko) | 코일 장치 | |
US6551426B2 (en) | Manufacturing method for a laminated ceramic electronic component | |
JP2003309021A (ja) | 表面実装型素子 | |
JP2011029222A (ja) | 電子部品 | |
WO2023149350A1 (ja) | インダクタ部品およびインダクタアレイ | |
JPH08273936A (ja) | コイル部品及びコイル内蔵基板 | |
JP2002008922A (ja) | コイル部品 | |
KR20150031954A (ko) | 인덕터 소자 | |
JPH0410657Y2 (ja) | ||
WO2005031763A1 (ja) | 積層型磁性部品及びその製造方法 | |
JP6024826B2 (ja) | 積層型インダクタ素子とその製造方法 | |
JPH04251905A (ja) | トランスの製造方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 03827185.0 Country of ref document: CN |
|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LU MC NL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG |
|
DFPE | Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101) | ||
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: 2005509194 Country of ref document: JP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2007030659 Country of ref document: US Ref document number: 10573633 Country of ref document: US |
|
122 | Ep: pct application non-entry in european phase | ||
WWP | Wipo information: published in national office |
Ref document number: 10573633 Country of ref document: US |