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公开(公告)号：US20170140864A1
公开(公告)日：2017-05-18
申请号：US15275924
申请日：2016-09-26
Applicant: Taiyo Yuden Co., Ltd.
Inventor： Takayuki ARAI , Ryuichi KONDOU , Akiko YAMAGUCHI , Shinsuke TAKEOKA , Kazuhiko OYAMA , Kenji OTAKE
IPC: H01F27/245 , H01F27/29 , H01F1/03 , H01F27/28
CPC classification number: H01F27/245 , H01F1/0306 , H01F1/28 , H01F5/00 , H01F17/0013 , H01F17/04 , H01F27/255 , H01F27/2804 , H01F27/29 , H01F27/292
Abstract: One object is to provide a laminated inductor having a reduced thickness without reduction in the magnetic characteristic and the insulation quality. The laminated inductor includes a first magnetic layer, an internal conductor, second magnetic layers, third magnetic layers, and a pair of external electrodes. The first magnetic layer has a thickness of 4 to 19 μm, and includes three or more magnetic alloy particles arranged in the thickness direction and an oxide film binding the magnetic alloy particles together and containing Cr. The internal conductor includes a plurality of conductive patterned portions electrically connected to each other via the first magnetic layer. The second magnetic layers are composed of magnetic alloy particles and disposed around the conductive patterned portions. The third magnetic layers are composed of magnetic alloy particles and disposed so as to be opposed to each other in thickness direction.
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公开(公告)号：US20140055224A1
公开(公告)日：2014-02-27
申请号：US14070386
申请日：2013-11-01
Applicant: TAIYO YUDEN CO., LTD.
Inventor： Hitoshi MATSUURA , Takayuki ARAI , Kenji OTAKE
IPC: H01F17/00
CPC classification number: H01F17/0013 , H01F17/0033
Abstract: A laminated inductor having an internal conductor forming region, as well as a top cover region and bottom cover region formed in a manner sandwiching the internal conductor forming region between top and bottom; wherein the internal conductor forming region has a magnetic part formed with soft magnetic alloy grains, as well as helical internal conductor embedded in the magnetic part; and at least one of the top cover region and bottom cover region (or preferably both) is/are formed with soft magnetic alloy grains whose average grain size is greater than that of grains in the internal conductor forming region including the soft magnetic alloy grains constituting the magnetic part.
Abstract translation: 具有内部导体形成区域的层叠电感器，以及以在顶部和底部之间夹持内部导体形成区域的方式形成的顶部覆盖区域和底部覆盖区域; 其特征在于，所述内部导体形成区域具有形成有软磁性合金晶粒的磁性部分，以及埋设在所述磁性部分中的螺旋状内部导体。 并且顶盖区域和底盖区域（或优选两者）中的至少一个由平均粒径大于包括构成的软磁性合金颗粒的内部导体形成区域的晶粒的平均粒径的软磁性合金晶粒形成 磁性部分。
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公开(公告)号：US20230411070A1
公开(公告)日：2023-12-21
申请号：US18462009
申请日：2023-09-06
Applicant: TAIYO YUDEN CO., LTD.
Inventor： Takayuki ARAI , Naoya TERAUCHI
IPC: H01F27/29 , H01F17/00 , H01F27/255
CPC classification number: H01F27/292 , H01F17/0013 , H01F27/255 , H01F2017/065
Abstract: An inductor according to one embodiment includes: a base body having a mounting surface, a top surface, and a first end surface; first and second external electrodes provided to the mounting surface and spaced from each other; and an conductor disposed inside the base body. One end of the conductor is exposed from the mounting surface and connected to the first external electrode, and the other end of the conductor is exposed from the mounting surface and connected to the second external electrode. The base body is partitioned into a first region and a second region, the first region being enclosed by the conductor and the mounting surface, and a ratio of an area of the second region to an area of the first region is 0.95 to 1.0. The conductor contains a conductive material having a higher electric conductivity than a material of the first external electrode.
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公开(公告)号：US20220262563A1
公开(公告)日：2022-08-18
申请号：US17566989
申请日：2021-12-31
Applicant: TAIYO YUDEN CO., LTD.
Inventor： Takayuki ARAI , Tomoo KASHIWA
Abstract: A method of manufacturing a coil component includes providing an intermediate body including a conductor portion formed by bending a base material mainly composed of a metal having a lower ionization tendency than iron and a substrate body containing metal magnetic particles mainly composed of iron and surrounding at least part of the conductor portion, heating the intermediate body at a first temperature to form an oxide film containing an oxide of the metal that covers a surface of the conductor portion, and after the heating at the first temperature, heating the intermediate body at a higher second temperature to form an oxide coating film containing iron oxide on a surface of each metal magnetic particles so that the substrate body is formed into a magnetic base body, to form the oxide film into an insulating oxide layer containing iron oxide and the metal, and to anneal the conductor portion.
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25.发明申请公开(公告)号：US20220068525A1
公开(公告)日：2022-03-03
申请号：US17399698
申请日：2021-08-11
Applicant: TAIYO YUDEN CO., LTD.
Inventor： Yoko ORIMO , Tomoo KASHIWA , Takayuki ARAI , Hirotaro SEINO
IPC: H01F1/147 , H01F27/255 , H01F27/28 , H01F41/02
Abstract: One object is to provide a magnetic body having a high mechanical strength. A magnetic body according to one embodiments of the present invention includes: first particles of a first alloy containing Fe and Cr; second particles of a second alloy containing at least one of Al or Mn; and bonding portions containing at least one of Al oxide or Mn oxide, the bonding portions bonding the first particles to each other. The bonding portions containing at least one of Al oxide or Mn oxide increase the mechanical strength of the magnetic body.
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Patent Agency Ranking
公开(公告)号：US20210304947A1
公开(公告)日：2021-09-30
申请号：US17217528
申请日：2021-03-30
Applicant: TAIYO YUDEN CO., LTD.
Inventor： Hirotaro SEINO , Takayuki ARAI
IPC: H01F27/255 , H01F27/32 , H01F27/29 , H01F17/00
Abstract: A coil component includes: a laminated body containing a plurality of metal magnetic particles; and a coil conductor provided in the laminated body so as to contact with the laminated body and wound around a coil axis, wherein the laminated body has an insulating portion including a non-metal magnetic particle region defined by at least three of the plurality of metal magnetic particles in a sectional surface of the laminated body, and wherein in the insulating portion, an atomic percent of Si is highest among those of materials constituting the non-metal magnetic particle region other than oxygen.
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公开(公告)号：US20200176176A1
公开(公告)日：2020-06-04
申请号：US16783849
申请日：2020-02-06
Applicant: TAIYO YUDEN CO., LTD.
Inventor： Takayuki ARAI , Masanori NAGANO
Abstract: In an exemplary embodiment, a passive component which is a surface mounting component, includes: a substrate body 10 having insulation property; an internal conductor 50 embedded in the substrate body 10; and an external electrode 70 provided on the bottom face 12, which is the mounting surface, of the substrate body 10 and electrically connected to the internal conductor 50; wherein the external electrode 70 has a face 86 roughly parallel with the bottom face 12 of the substrate body 10, and a dome-shaped projection 80 that bulges, with reference to the roughly parallel face 86, away from the bottom face 12 of the substrate body 10. The passive component can prevent misalignment problems at mounting.
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公开(公告)号：US20200027653A1
公开(公告)日：2020-01-23
申请号：US16511848
申请日：2019-07-15
Applicant: TAIYO YUDEN CO., LTD.
Inventor： Naoya TERAUCHI , Takayuki ARAI , Natsuko SATO , Atsuko KASAHARA
Abstract: A magnetic coupling coil element in one embodiment includes a magnetic base body that includes an intermediate magnetic layer, a first magnetic layer disposed over the intermediate magnetic layer, and a second magnetic layer disposed under the intermediate magnetic layer; a first coil conductor provided in the first magnetic layer; and a second coil conductor provided in the second magnetic layer. The intermediate magnetic layer has a saturation magnetic flux density lower than saturation magnetic flux densities of the first magnetic layer and the second magnetic layer in a first region that overlaps with the first coil conductor and the second coil conductor in plan view.
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公开(公告)号：US20190131063A1
公开(公告)日：2019-05-02
申请号：US16161628
申请日：2018-10-16
Applicant: TAIYO YUDEN CO., LTD.
Inventor： Takayuki ARAI , Masanori NAGANO , Akihisa MATSUDA , Daisuke YAMAGUCHI , Naoya TERAUCHI
Abstract: A magnetic coupling coil component according to one embodiment of the present invention includes: an insulating layer; a first coil conductor embedded in the insulating layer, the first coil conductor having a first top coil surface and a first bottom coil surface; a second coil conductor embedded in the insulating layer, the second coil conductor having a second top coil surface and a second bottom coil surface; a first cover layer provided on a first surface of the insulating layer so as to be opposed to the first top coil surface; and a second cover layer provided on a second surface of the insulating layer opposite to the first surface so as to be opposed to the second bottom coil surface. At least one of the first cover layer and the second cover layer has a magnetic permeability higher than a magnetic permeability of the insulating layer.
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公开(公告)号：US20190103216A1
公开(公告)日：2019-04-04
申请号：US16141122
申请日：2018-09-25
Applicant: TAIYO YUDEN CO., LTD.
Inventor： Akihisa MATSUDA , Daisuke YAMAGUCHI , Takayuki ARAI
Abstract: A coil component according to one embodiment of the present invention includes: a first insulator body containing first filler particles at least partially having electrical conductivity; a second insulator body containing second filler particles at least partially having electrical conductivity; a first coil conductor provided in the first insulator body and wound around a coil axis for N1 turns such that intervals between adjacent turns are g1; and a second coil conductor provided in the second insulator body and wound around the coil axis for N2 turns such that intervals between adjacent turns are g2. In the embodiment, a first coil surface of the first coil conductor faces a second coil surface of the second coil conductor, and a distance T between the first coil surface and the second coil surface satisfies a relationship T≥g1×N1+g2×N2.
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