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：US20240290532A1

公开(公告)日：2024-08-29

申请号：US18585359

申请日：2024-02-23

Applicant: TDK Corporation

Inventor： Yuichi OYANAGI ,  Toru Tonogai ,  Tomoya Ishihara

IPC: H01F27/255 ,  H01F17/04 ,  H01F27/28

CPC classification number: H01F27/255 ,  H01F17/04 ,  H01F27/2823

Abstract: In a coil component, a recess provided on a surface of a magnetic sheet contributes to an enlargement of a bonding area between an element body and a magnetic sheet, and thus the interfacial peeling between the element body and the magnetic sheet is suppressed. In particular, since the magnetic sheet covers the entire region of the element body when viewed from the direction of the coil axis, the bonding area may be maximized and interfacial peeling may be further suppressed.

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：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.