公开(公告)号：US20220059281A1

公开(公告)日：2022-02-24

申请号：US17399855

申请日：2021-08-11

Applicant: TDK CORPORATION

Inventor： Terumasa TOYODA ,  Hiroshi SUZUKI ,  Toru TONOGAI ,  Keigo HIGASHIDA ,  Hanako YOSHINO

IPC: H01F27/29 ,  H01F17/04 ,  H01F27/28

Abstract: Disclosed herein is a coil component that includes a plate-like base member, a magnetic core mounted on the base member, a wire wound around the magnetic core such that an axis direction thereof is substantially parallel to the base member, and a terminal electrode fixed to the base member and connected to an end portion of the wire. The base member is made of a material having a permeability lower than that of the magnetic core.

公开(公告)号：US20230326668A1

公开(公告)日：2023-10-12

申请号：US18130509

申请日：2023-04-04

Applicant: TDK CORPORATION

Inventor： Toru TONOGAI ,  Arisa FURUYA

IPC: H01F27/30 ,  H01F27/28 ,  H01F27/29 ,  H01F27/24 ,  H01F27/32

CPC classification number: H01F27/306 ,  H01F27/2852 ,  H01F27/32 ,  H01F27/24 ,  H01F27/292

Abstract: A coil device 2 including a core 4, a coil 6 having a winding 60 embedded inside the core 4, and a lead-out 6b led out from the winding 60 to a bottom 4a of the core 4. The lead-out 6b includes a terminal 61 arranged at the bottom 4a of the core 4, the terminal 61 includes an embedded part 610 embedded inside the core 4 and an exposed part 611 exposed from the core 4. A metal layer 8 is formed on a surface of the exposed part 611.

公开(公告)号：US20220344086A1

公开(公告)日：2022-10-27

申请号：US17723808

申请日：2022-04-19

Applicant: TDK CORPORATION

Inventor： Kyosuke INUI ,  Terumasa TOYODA ,  Toru TONOGAI ,  Yuichi OYANAGI

IPC: H01F1/24

Abstract: An element body 4 includes a metal particle dispersion element 15 in which metal particles 12 are dispersed. A surface of the metal particle dispersion element 15 includes an indicator area 10. The indicator area 10 includes a recess 10a having a predetermined depth measured from a reference plane L of the metal particle dispersion element 15. The predetermined depth D1 is deeper than D50 of the metal particles 12 included in the metal particle dispersion element 15.

公开(公告)号：US20230075338A1

公开(公告)日：2023-03-09

申请号：US17882941

申请日：2022-08-08

Applicant: TDK CORPORATION

Inventor： Keigo HIGASHIDA ,  Toru TONOGAI

IPC: H01F27/29 ,  H01F27/36 ,  H01F17/04

Abstract: A coil device 2 comprises an element body 4 including a magnetic body, a coil 6α incorporated in the element body 4, and a terminal electrode 8 connected to a lead portion of the coil 6α. A shielding layer 10 including a metal and a resin is formed on at least one outer surface 4a of the element body 4.

公开(公告)号：US20220115177A1

公开(公告)日：2022-04-14

申请号：US17499269

申请日：2021-10-12

Applicant: TDK CORPORATION

Inventor： Toru TONOGAI ,  Kyosuke INUI ,  Yuichi OYANAGI ,  Izuru KIMURA

IPC: H01F27/28 ,  H01F27/255

Abstract: An element body includes a metal-particle-dispersed body in which metal particles are dispersed, the metal-particle-dispersed body includes a display region on a surface, and the display region includes a display pattern in which a resin exposed portion where a resin appears on a surface and a metal exposed portion where the metal particles appear on the surface are alternately repeated.

公开(公告)号：US20200335264A1

公开(公告)日：2020-10-22

申请号：US16841225

申请日：2020-04-06

Applicant: TDK CORPORATION

Inventor： Toru TONOGAI ,  Yuichi Oyanagi ,  Kyosuke Inui ,  Maki Mannen

IPC: H01F27/29 ,  H01F27/255 ,  H01F41/04 ,  H01F27/32

Abstract: Disclosed herein is a coil component that includes a magnetic element body, a coil conductor embedded in the magnetic element body and having an end portion exposed from the magnetic element body, and a terminal electrode connected to the end portion of the coil conductor. The terminal electrode includes a conductive resin contacting the end portion of the coil conductor and containing conductive particles and a resin material, and a metal film covering the conductive resin. The end portion of the coil conductor has an exposed surface exposed from the magnetic element body and contacting the conductive resin and a non-exposed surface covered with the magnetic element body. The exposed surface is larger in surface roughness than the non-exposed surface.

公开(公告)号：US20240312700A1

公开(公告)日：2024-09-19

申请号：US18597162

申请日：2024-03-06

Applicant: TDK Corporation

Inventor： Yuichi OYANAGI ,  Toru TONOGAI ,  Tomoya ISHIHARA

IPC: H01F27/34 ,  H01F27/02 ,  H01F27/28

CPC classification number: H01F27/346 ,  H01F17/04 ,  H01F27/2823 ,  H01F2017/048

Abstract: In a coil component, a magnetic sheet is inclined in the area overlapping with a coil in the vertical direction, and the magnetic sheet is along the orientation of the magnetic flux in the vicinity of the inner edge of the coil. Therefore, magnetic flux easily passes through the magnetic sheet, and reduction of leakage flux in the coil component is realized.

公开(公告)号：US20220139609A1

公开(公告)日：2022-05-05

申请号：US17512790

申请日：2021-10-28

Applicant: TDK CORPORATION

Inventor： Kyosuke INUI ,  Yuichi OYANAGI ,  Toru TONOGAI ,  Toshiyuki ANBO

IPC: H01F27/29 ,  H01F17/04

Abstract: A coil device including: a core containing magnetic particles and a resin component; a coil including a conductor having a coil shape; and a terminal electrode formed on a part of an outer surface of the core and electrically connected to an end of the conductor drawn from the coil. The terminal electrode includes a first electrode layer in contact with the end of the conductor and a second electrode layer located outside the first electrode layer. The first electrode layer and the second electrode layer both include conductive powder and resin, and a content of the resin in the second electrode layer is higher than a content of the resin in the first electrode layer.

公开(公告)号：US20210358683A1

公开(公告)日：2021-11-18

申请号：US17320402

申请日：2021-05-14

Applicant: TDK CORPORATION

Inventor： Kyosuke INUI ,  Makoto MORITA ,  Takashi KUDO ,  Toshiyuki ANBO ,  Kyohei TONOYAMA ,  Fuyuki MIURA ,  Masanori SUGAI ,  Eietsu ABE ,  Toru TONOGAI ,  Yuichi OYANAGI

IPC: H01F27/29 ,  H01F27/28

Abstract: An electronic component according to the present invention includes: a leadout electrode portion provided on an outer surface of an element main body; and a resin electrode layer formed at a part of the outer surface of the element main body and connected to the leadout electrode portion. The leadout electrode portion contains copper as a main component, and the resin electrode layer includes a conductor powder containing silver, and a resin. Further, a diffusion layer containing copper oxide and silver is formed at an interface between the leadout electrode portion and the resin electrode layer.

公开(公告)号：US20190304659A1

公开(公告)日：2019-10-03

申请号：US16294381

申请日：2019-03-06

Applicant: TDK CORPORATION

Inventor： Toru TONOGAI ,  Atsuyuki NAKANO ,  Terumasa TOYODA ,  Yuichi OYANAGI

IPC: H01F27/24 ,  H01F27/28 ,  H01F27/29

Abstract: An inductor has a coil portion made of a wire wound in a coil shape and an element body in which the coil portion is provided. The element body has a first core member, a second core member, and a third core member. The first core member has a winding core portion configured to be positioned inside the coil portion. The second core member is accommodated in the winding core portion. The third core member covers the coil portion and the first core member in which the second core member is accommodated in the winding core portion.