WO2010087247A1 - 積層インダクタ - Google Patents
積層インダクタ Download PDFInfo
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- WO2010087247A1 WO2010087247A1 PCT/JP2010/050548 JP2010050548W WO2010087247A1 WO 2010087247 A1 WO2010087247 A1 WO 2010087247A1 JP 2010050548 W JP2010050548 W JP 2010050548W WO 2010087247 A1 WO2010087247 A1 WO 2010087247A1
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- WIPO (PCT)
- Prior art keywords
- coil
- multilayer inductor
- connection
- axis direction
- viewed
- Prior art date
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- 239000004020 conductor Substances 0.000 claims abstract description 78
- 238000010030 laminating Methods 0.000 claims abstract description 3
- 239000012212 insulator Substances 0.000 claims description 7
- 230000032798 delamination Effects 0.000 abstract description 10
- 239000000696 magnetic material Substances 0.000 abstract 2
- 239000011810 insulating material Substances 0.000 abstract 1
- 239000000919 ceramic Substances 0.000 description 14
- 238000000034 method Methods 0.000 description 7
- 229910052709 silver Inorganic materials 0.000 description 7
- 229910000859 α-Fe Inorganic materials 0.000 description 5
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical group [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- 239000004332 silver Substances 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 3
- 239000000956 alloy Substances 0.000 description 3
- 239000011230 binding agent Substances 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 238000010304 firing Methods 0.000 description 3
- 229910052737 gold Inorganic materials 0.000 description 3
- 229910052763 palladium Inorganic materials 0.000 description 3
- 238000003475 lamination Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910000480 nickel oxide Inorganic materials 0.000 description 2
- 238000000206 photolithography Methods 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 description 1
- 229910018605 Ni—Zn Inorganic materials 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 1
- 229910007565 Zn—Cu Inorganic materials 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 238000007606 doctor blade method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002706 hydrostatic effect Effects 0.000 description 1
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 1
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 description 1
- GNRSAWUEBMWBQH-UHFFFAOYSA-N oxonickel Chemical compound [Ni]=O GNRSAWUEBMWBQH-UHFFFAOYSA-N 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000007650 screen-printing Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F17/00—Fixed inductances of the signal type
- H01F17/0006—Printed inductances
- H01F17/0013—Printed inductances with stacked layers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F17/00—Fixed inductances of the signal type
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F17/00—Fixed inductances of the signal type
- H01F17/0006—Printed inductances
- H01F17/0013—Printed inductances with stacked layers
- H01F2017/002—Details of via holes for interconnecting the layers
Definitions
- the present invention relates to a multilayer inductor, and more particularly to a multilayer inductor having a built-in coil.
- FIG. 4 is an exploded perspective view of the multilayer body 111 of the multilayer inductor described in Patent Document 1.
- the laminated body 111 includes magnetic layers 112a to 112l, internal conductors 114a to 114f, and via hole conductors B1 to B5.
- the magnetic layers 112a to 112l are insulating layers arranged in this order from the upper side to the lower side in the stacking direction.
- the inner conductor 114 a is provided on the magnetic layer 112 d, and one end is drawn out to the right side surface of the multilayer body 111.
- the inner conductors 114b to 114e circulate on the magnetic layers 112e to 112h with a length of one turn, have connection portions 116b to 116e at one end, and connection portions 117b to 117e at the other end. Have.
- the inner conductors 114b and 114d have the same shape, and the inner conductors 114c and 114e have the same shape.
- the internal conductor 114 f is provided on the magnetic layer 112 i, and one end is drawn out to the left side surface of the multilayer body 111.
- the via-hole conductors B1 to B5 connect the internal conductors 114a to 114f adjacent in the stacking direction. As a result, a coil L that spirally rotates in the laminate 111 is configured.
- FIG. 5 is a perspective view of the stacked body 111 from the upper side in the stacking direction.
- the inner conductors 114a to 114f are shown superimposed.
- the laminated body 111 is provided with a rectangular region E surrounded by the connecting portions 116b to 116e and 117b to 117e.
- this region E the internal conductors 114a to 114f are not provided. Therefore, the thickness in the stacking direction of the stacked body 111 in the region E is larger than the thickness in the stacking direction of the stacked body 111 in the region around the region E (the region where the connection portions 116b to 116e and 117b to 117e are provided). The thickness is reduced by the thickness of the connecting portions 116b to 116e and 117b to 117e.
- an object of the present invention is to suppress the occurrence of delamination in a multilayer inductor incorporating a coil constituted by a coil conductor having a length of one turn.
- a multilayer inductor according to an aspect of the present invention, a multilayer body in which a plurality of insulator layers are stacked, and a ring having a length of one turn on the insulator layer when viewed in plan from the stack direction.
- a plurality of coil conductors having a second connection portion including a position, a first via-hole conductor connecting the first connection positions adjacent in the stacking direction, and the first adjacent in the stacking direction.
- the second via-hole conductor connecting the two connection positions, and the plurality of coil conductors are surrounded by the first connection portion and the second connection portion when viewed in plan from the stacking direction. It is placed on the insulator layer so as to overlap with a predetermined area. Its dependent that comprises a land portion, and wherein.
- a multilayer inductor including a coil constituted by a coil conductor having a length of one turn.
- FIG. 1 is an external perspective view of a multilayer inductor according to an embodiment of the present invention.
- FIG. 2 is an exploded perspective view of a multilayer body of the multilayer inductor in FIG. 1. It is the figure which planarly viewed the magnetic body layer 12 from the positive direction side of the z-axis direction.
- 10 is an exploded perspective view of a multilayer body of the multilayer inductor described in Patent Document 1.
- FIG. It is the figure which saw through the laminated body of FIG. 4 from the upper side of the lamination direction.
- FIG. 1 is an external perspective view of the multilayer inductor 10.
- FIG. 2 is an exploded perspective view of the multilayer body 11 of the multilayer inductor 10.
- the lamination direction of the multilayer inductor 10 is defined as the z-axis direction
- the direction along the long side of the multilayer inductor 10 is defined as the x-axis direction
- the direction along the short side of the multilayer inductor 10 is defined as the y-axis direction.
- the multilayer inductor 10 includes a multilayer body 11 and external electrodes 13a and 13b.
- the laminated body 11 has a rectangular parallelepiped shape.
- the external electrodes 13a and 13b are provided on the side surfaces of the multilayer body 11 located at both ends in the x-axis direction.
- the multilayer body 11 is formed by laminating magnetic layers 12a to 12p, coil conductors 14a to 14f, and land portions 18a to 18d, and includes a helical coil L therein.
- the magnetic layers 12a to 12p are a plurality of rectangular insulating layers made of magnetic ferrite (for example, Ni—Zn—Cu ferrite or Ni—Zn ferrite).
- magnetic ferrite for example, Ni—Zn—Cu ferrite or Ni—Zn ferrite.
- the coil conductors 14 a to 14 f constitute a coil L by being electrically connected in the multilayer body 11.
- Each of the coil conductors 14b to 14e is made of a conductive material made of Ag, and circulates with a length of one turn on the magnetic layers 12f to 12j when viewed in plan from the z-axis direction. More specifically, the coil conductors 14b to 14e circulate on a substantially rectangular ring-shaped track R (see the magnetic layer 12g in FIG. 2), and connection portions 16b to 16e and 17b to 17e at both ends thereof. have.
- the connection portions 16b to 16e include end portions (connection positions) t4, t5, t8, and t9, and are provided on the outer side of the annular track R (in FIG.
- connection portions 17b to 17e include end portions (connection positions) t3, t6, t7, and t10, and are provided on the end portion of the ring-shaped track R.
- the connection portions 17b to 17e since the coil conductors 14b to 14e have the connection portions 17b to 17e, the end portions t3, t6, t7, and t10 are located on the rectangular ring-shaped track R, and the z axis They overlap each other when viewed in plan from the direction.
- the coil conductors 14b and 14d have the same shape, and the coil conductors 14c and 14e have the same shape. That is, in the coil conductors 14b to 14e, two types of coil conductors are alternately arranged in the z-axis direction.
- the coil conductor 14a is provided on the positive side in the z-axis direction relative to the coil conductors 14b to 14e, and constitutes a part of the coil L by being electrically connected to the coil conductors 14b to 14e. .
- the coil conductor 14a is made of a conductive material made of Ag, and circulates with a length of 3/4 turn on the magnetic layer 12f when viewed in plan from the z-axis direction. As shown in FIG. 2, one end t1 of the coil conductor 14a is drawn out to the side on the positive direction side in the x-axis direction of the magnetic layer 12f. Thereby, the coil conductor 14a is connected to the external electrode 13a.
- the end t2 is located on the rectangular annular track R and overlaps the end t3 when viewed in plan from the z-axis direction.
- the coil conductor 14f is provided on the negative side in the z-axis direction with respect to the coil conductors 14b to 14e, and constitutes a part of the coil L by being electrically connected to the coil conductors 14b to 14e. .
- the coil conductor 14f is made of a conductive material made of Ag, and circulates with a length of 1/2 turn on the magnetic layer 12k when viewed in plan from the z-axis direction. As shown in FIG. 2, one end t12 of the coil conductor 14f is led out to the side on the negative direction side in the x-axis direction of the magnetic layer 12k. Thereby, the coil conductor 14f is connected to the external electrode 13b.
- the end t11 is located on the rectangular annular track R, and overlaps the end t10 when viewed in plan from the z-axis direction.
- FIG. 3 is a plan view of the magnetic layer 12 as viewed from the positive side in the z-axis direction.
- the magnetic layers 12f to 12k are overlapped.
- FIG. 3B shows the magnetic layers 12d and 12m.
- FIG. 3C shows the magnetic layers 12e and 12l.
- the land portions 18a and 18b are provided on the positive side in the z-axis direction with respect to the coil conductors 14a to 14f.
- the land portions 18c and 18d are provided on the negative direction side in the z-axis direction from the coil conductors 14a to 14f. More specifically, the land portions 18a to 18d are provided on the magnetic layers 12d, 12e, 12l, and 12m, as shown in FIGS. 3B and 3C, respectively.
- Region E when viewed in plan from the z-axis direction, a quadrangle surrounded by the connection portions 16b to 16e and the connection portions 17b to 17e and not provided with the coil conductors 14b to 14e. Region E is formed.
- the land portions 18a to 18d are provided on the magnetic layers 12d, 12e, 12l, and 12m so as to overlap the region E when viewed from the positive side in the z-axis direction.
- the land portions 18a and 18d are provided in shapes and positions that coincide with the region E, as shown in FIG.
- the lands 18b and 18c are provided so as to overlap with the connection portions 16b to 16e, 17b to 17e and the region E when viewed in plan from the z-axis direction.
- the lands 18b and 18c do not overlap with the ends t2 to t11 when viewed in plan from the z-axis direction.
- the lands 18b and 18c do not overlap the corners C1 and C2 when viewed in plan from the z-axis direction. Corners C1 and C2 are portions formed by overlapping the connection portions 16b to 16e and the connection portions 17b to 17e. Therefore, the lands 18b and 18c have a shape in which four corners of a quadrangle are cut off. Further, the lands 18a to 18d are not electrically connected to the coil conductor 14.
- the via-hole conductors b1 to b5 constitute a part of the spiral coil L by electrically connecting the coil conductors 14a to 14f. More specifically, as shown in FIG. 2, the via-hole conductor b1 is positioned on the annular track R and penetrates the magnetic layer 12f, thereby adjoining the end t2 in the z-axis direction. Are connected to the end t3. The via-hole conductor b2 is located outside the annular track R and penetrates the magnetic layer 12g, thereby connecting the end t4 and the end t5 adjacent in the z-axis direction.
- the via-hole conductor b3 is positioned on the annular track R and penetrates the magnetic layer 12h, thereby connecting the end t6 and the end t7 that are adjacent in the z-axis direction.
- the via-hole conductor b4 is located outside the circular track R and penetrates the magnetic layer 12i, thereby connecting the end t8 and the end t9 that are adjacent in the z-axis direction.
- the via-hole conductor b5 is located on the annular track R and penetrates the magnetic layer 12j, thereby connecting the end t10 and the end t11 that are adjacent in the z-axis direction.
- the via-hole conductors b1, b3, and b5 that connect the ends t2, t3, t6, t7, t10, and t11 on the annular track R and the ends t4, t5, t8, and t9 outside the annular track R are connected.
- the via-hole conductors b2 and b4 are provided so as to be alternately arranged in the z-axis direction. Thereby, the several coil conductor 14 which has the length of 1 turn is mutually connected, without short-circuiting.
- ferric oxide (Fe 2 O 3 ), zinc oxide (ZnO), nickel oxide (NiO), and copper oxide (CuO) were weighed at a predetermined ratio and each material was put into a ball mill as a raw material, and wet blended I do.
- the obtained mixture is dried and pulverized, and the obtained powder is calcined at 800 ° C. for 1 hour.
- the obtained calcined powder is wet pulverized by a ball mill, dried and then crushed to obtain a ferrite ceramic powder.
- a binder (vinyl acetate, water-soluble acrylic, etc.), a plasticizer, a wetting material, and a dispersing agent are added and mixed with a ball mill, and then defoamed under reduced pressure.
- the obtained ceramic slurry is formed into a sheet shape on a carrier sheet by a doctor blade method and dried to produce a ceramic green sheet to be the magnetic layer 12.
- via-hole conductors b1 to b5 are formed in the ceramic green sheets to be the magnetic layers 12f to 12j, respectively. Specifically, a via hole is formed by irradiating a ceramic green sheet to be the magnetic layers 12f to 12j with a laser beam. Next, the via hole is filled with a conductive paste such as Ag, Pd, Cu, Au or an alloy thereof by a method such as printing.
- a conductive paste such as Ag, Pd, Cu, Au or an alloy thereof by a method such as printing.
- a conductive paste mainly composed of Ag, Pd, Cu, Au, or an alloy thereof is applied on the ceramic green sheet to be the magnetic layers 12f to 12k by a method such as a screen printing method or a photolithography method.
- the coil conductors 14a to 14f are formed. Note that the step of forming the coil conductors 14a to 14f and the step of filling the via hole with the conductive paste may be performed in the same step.
- a conductive paste mainly composed of Ag, Pd, Cu, Au, or an alloy thereof is screen-printed or photolithography.
- the land portions 18a to 18d are formed by coating with a method such as the above.
- each ceramic green sheet is laminated. Specifically, a ceramic green sheet to be the magnetic layer 12p is disposed.
- the ceramic green sheet carrier film to be the magnetic layer 12o is peeled off, and the ceramic green sheet to be the magnetic layer 12p is disposed. Thereafter, a ceramic green sheet to be the magnetic layer 12o is pressure-bonded to the magnetic layer 12p.
- the pressure bonding conditions are a pressure of 100 to 120 tons and a time of about 3 to 30 seconds. Further, the carrier film is discharged by suction and holding by a chuck.
- the ceramic green sheets to be the magnetic layers 12n, 12m, 12l, 12k, 12j, 12i, 12h, 12g, 12f, 12e, 12d, 12c, 12b, and 12a are similarly laminated and pressure-bonded in this order. .
- a mother laminated body is formed.
- the mother laminate is subjected to main pressure bonding by a hydrostatic pressure press or the like.
- the mother laminated body is cut into a laminated body 11 having a predetermined size by pressing. Thereby, the unfired laminated body 11 is obtained.
- This unfired laminate 11 is subjected to binder removal processing and firing.
- the binder removal treatment is performed, for example, in a low oxygen atmosphere at 500 ° C. for 2 hours. Firing is performed, for example, at 890 ° C. for 2.5 hours.
- the baked laminate 11 is obtained through the above steps.
- the laminated body 11 is subjected to barrel processing to be chamfered. Thereafter, on the surface of the multilayer body 11, for example, a conductive paste whose main component is silver is applied and baked by a method such as a dipping method, whereby silver electrodes to be the external electrodes 13a and 13b are formed.
- the silver electrode is baked at 800 ° C. for 1 hour.
- external electrodes 13a and 13b are formed by performing Ni plating / Sn plating on the surface of the silver electrode.
- the multilayer inductor 10 configured as described above causes delamination in the region E even when the coil L formed by the coil conductor 14 having a length of one turn is incorporated as described below. Can be suppressed. More specifically, in the multilayer inductor described in Patent Document 1, the thickness in the stacking direction of the multilayer body 111 in the region E is larger than the thickness in the stacking direction of the multilayer body 111 in the region around the region E. 116e, 117b to 117e are reduced in thickness. For this reason, when the laminated body 111 is pressure-bonded, the pressure-bonding tool cannot wrap around the region E, and a sufficient pressure may not be applied to the region E. As a result, the multilayer inductor described in Patent Document 1 has a problem that delamination is likely to occur in the region E.
- the multilayer inductor 10 As shown in FIG. 2, land portions 18a to 18d are provided so as to overlap the region E when viewed in plan from the z-axis direction. Therefore, in the multilayer inductor 10, the thickness in the z-axis direction of the multilayer body 11 in the region E and the thickness in the z-axis direction of the multilayer body 11 in the region around the region E are compared with the multilayer inductor described in Patent Document 1. The difference becomes smaller. Therefore, in the multilayer inductor 10, the land portions 18 a to 18 d exert pressure on the magnetic layer 12 in the region E as compared with the multilayer inductor described in Patent Document 1.
- the land conductors 18a to 18d are harder than the magnetic layer 12 before firing, the presence of the land conductors 18a to 18d ensures that the pressure is more reliably applied to the magnetic layer 12 in the region E. The pressure will be transmitted.
- the magnetic layer 12 in the region E is firmly pressed, and the occurrence of delamination is suppressed.
- land portions 18b and 18c are provided so as to overlap with the connection portions 16b to 16e and 17b to 17e when viewed in plan from the z-axis direction. Therefore, in the laminate 11, the occurrence of delamination is suppressed even at the locations where the connection portions 16b to 16e and 17b to 17e are provided.
- the lands 18b and 18c have a shape in which the four corners of the quadrangle are cut off, the lands 18b and 18c do not overlap the ends t2 to t11 when viewed in plan from the z-axis direction. Furthermore, the lands 18b and 18c do not overlap the corners C1 and C2 when viewed in plan from the z-axis direction.
- the ends t2 to t11 and the corners C1 and C2 are places where the connection portions 16b to 16e and the connection portions 17b to 17e overlap in the periphery of the region E.
- the thickness of the laminate 11 at the ends t2 to t11 and the corners C1 and C2 is thicker than the thickness of the laminate 11 around the region E other than the ends t2 to t11 and the corners C1 and C2. Accordingly, it is not necessary to provide the land portions 18b and 18c in the portions overlapping the end portions t2 to t11 and the corners C1 and C2.
- the multilayer inductor according to the present invention is not limited to the multilayer inductor 10 according to the embodiment, and can be changed within the scope of the gist thereof.
- the land portions 18b and 18c may be provided, and the land portions 18a and 18d may not be provided. Further, the land portions 18a and 18d are provided, and the land portions 18b and 18c may not be provided.
- the land portions 18b, 18c may have a larger area than the configuration shown in FIG.
- the land portions 18a to 18d may be insulators.
- connection positions to which the via-hole conductors b1 to b5 are connected are the end portions t2 to t11. However, the connection positions may not be the end portions t2 to t11 of the coil conductor 14.
- the present invention is useful for a multilayer inductor, and is particularly excellent in that the occurrence of delamination can be suppressed in a multilayer inductor including a coil constituted by a coil conductor having a length of one turn.
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Abstract
Description
図1は、積層インダクタ10の外観斜視図である。図2は、積層インダクタ10の積層体11の分解斜視図である。以下、積層インダクタ10の積層方向をz軸方向と定義し、積層インダクタ10の長辺に沿った方向をx軸方向と定義し、積層インダクタ10の短辺に沿った方向をy軸方向と定義する。
以下に、前記積層インダクタ10の製造方法について図1及び図2を参照しながら説明する。
以上のように構成された積層インダクタ10は、以下に説明するように、1ターンの長さを有するコイル導体14により構成されているコイルLを内蔵していても、領域Eにおいてデラミネーションが発生することを抑制できる。より詳細には、特許文献1に記載の積層インダクタでは、領域Eにおける積層体111の積層方向の厚みは、領域Eの周囲の領域における積層体111の積層方向の厚みよりも、接続部116b~116e,117b~117eの厚みの分だけ薄くなる。そのため、積層体111の圧着時に、圧着ツールが領域E内に回り込むことができず、領域Eに十分な圧力が加わらない場合があった。その結果、特許文献1に記載の積層インダクタは、領域Eにおいて、デラミネーションが発生し易いという問題を有していた。
なお、本発明に係る積層インダクタは、前記実施形態に係る積層インダクタ10に限らず、その要旨の範囲内において変更可能である。例えば、積層インダクタ10において、ランド部18b、18cが設けられ、ランド部18a,18dが設けられていなくてもよい。また、ランド部18a,18dが設けられ、ランド部18b,18cが設けられていなくてもよい。
C1,C2 角
E 領域
L コイル
t1~t12 端部
10 積層インダクタ
11 積層体
12a~12p 磁性体層
13a,13b 外部電極
14a~14f コイル導体
16b~16e,17b~17e 接続部
18a~18d ランド部
Claims (5)
- 複数の絶縁体層が積層されてなる積層体と、
積層方向から平面視したときに、前記絶縁体層上において1ターンの長さで環状の軌道上を周回しているコイル導体であって、該環状の軌道上に位置している第1の接続位置を含む第1の接続部及び該環状の軌道外に位置している第2の接続位置を含む第2の接続部を有している複数のコイル導体と、
積層方向に隣り合う前記第1の接続位置同士を接続している第1のビアホール導体と、
積層方向に隣り合う前記第2の接続位置同士を接続している第2のビアホール導体と、
積層方向から平面視したときに、前記複数のコイル導体において前記第1の接続部及び前記第2の接続部により囲まれている所定の領域と重なるように前記絶縁体層上に設けられているランド部と、
を備えていること、
を特徴とする積層インダクタ。 - 前記ランド部は、積層方向から平面視したときに、前記第1の接続部及び前記第2の接続部と重なっていること、
を特徴とする請求項1に記載の積層インダクタ。 - 前記ランド部は、積層方向から平面視したときに、前記複数のコイル導体の前記第1の接続位置及び前記第2の接続位置とは重なっていないこと、
を特徴とする請求項2に記載の積層インダクタ。 - 前記ランド部は、前記複数のコイル導体よりも積層方向の上側又は下側に設けられていること、
を特徴とする請求項1ないし請求項3のいずれかに記載の積層インダクタ。 - 前記ランド部は、前記コイル導体と電気的に接続されていないこと、
を特徴とする請求項1ないし請求項4のいずれかに記載の積層インダクタ。
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CN2010800057461A CN102301437B (zh) | 2009-02-02 | 2010-01-19 | 层叠电感 |
JP2010548469A JP5585453B2 (ja) | 2009-02-02 | 2010-01-19 | 積層インダクタ |
US13/192,274 US8143989B2 (en) | 2009-02-02 | 2011-07-27 | Multilayer inductor |
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US10312007B2 (en) * | 2012-12-11 | 2019-06-04 | Intel Corporation | Inductor formed in substrate |
CN105098300A (zh) * | 2015-09-11 | 2015-11-25 | 禾邦电子(中国)有限公司 | 共模滤波器及其制造方法 |
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WO2021008637A2 (zh) * | 2020-10-12 | 2021-01-21 | 深圳顺络电子股份有限公司 | 一种层叠型屏蔽电感 |
Citations (3)
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JPH11186084A (ja) * | 1997-12-18 | 1999-07-09 | Taiyo Yuden Co Ltd | 積層チップインダクタの製造方法 |
WO2008018203A1 (fr) * | 2006-08-07 | 2008-02-14 | Murata Manufacturing Co., Ltd. | composant de bobine multicouche ET SON PROCÉDÉ DE FABRICATION |
WO2010016345A1 (ja) * | 2008-08-07 | 2010-02-11 | 株式会社村田製作所 | 積層インダクタ |
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JP3362764B2 (ja) * | 1997-02-24 | 2003-01-07 | 株式会社村田製作所 | 積層型チップインダクタの製造方法 |
JP3680758B2 (ja) * | 2001-04-20 | 2005-08-10 | 株式会社村田製作所 | 積層セラミック電子部品の製造方法 |
JP2003272925A (ja) | 2002-03-18 | 2003-09-26 | Mitsubishi Materials Corp | 電子部品 |
JP4352795B2 (ja) | 2003-08-01 | 2009-10-28 | 株式会社村田製作所 | 積層セラミック電子部品の製造方法 |
JP2005340664A (ja) | 2004-05-28 | 2005-12-08 | Kyocera Corp | コンデンサ |
JP2006066829A (ja) | 2004-08-30 | 2006-03-09 | Tdk Corp | 積層型電子部品及びその製造方法 |
JP4895193B2 (ja) | 2006-11-24 | 2012-03-14 | Fdk株式会社 | 積層インダクタ |
JP5573680B2 (ja) * | 2009-01-08 | 2014-08-20 | 株式会社村田製作所 | 電子部品 |
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JPH11186084A (ja) * | 1997-12-18 | 1999-07-09 | Taiyo Yuden Co Ltd | 積層チップインダクタの製造方法 |
WO2008018203A1 (fr) * | 2006-08-07 | 2008-02-14 | Murata Manufacturing Co., Ltd. | composant de bobine multicouche ET SON PROCÉDÉ DE FABRICATION |
WO2010016345A1 (ja) * | 2008-08-07 | 2010-02-11 | 株式会社村田製作所 | 積層インダクタ |
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CN102301437A (zh) | 2011-12-28 |
KR20110094333A (ko) | 2011-08-23 |
US8143989B2 (en) | 2012-03-27 |
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US20110285495A1 (en) | 2011-11-24 |
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