公开(公告)号：US20200335262A1

公开(公告)日：2020-10-22

申请号：US16840948

申请日：2020-04-06

Applicant: TDK CORPORATION

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

IPC: H01F27/28 ,  H01F17/04 ,  H01F41/12 ,  H01F27/255 ,  H01F27/29

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 conductive resin including a first conductive resin contacting the end portion of the coil conductor, and a second conductive resin contacting the metal film without contacting the end portion of the coil conductor. A specific surface area of the conductive particles contained in the first conductive resin is larger than that of a conductive particles contained in the second conductive resin.

公开(公告)号：US11676755B2

公开(公告)日：2023-06-13

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 ,  H01F27/32 ,  H01F27/255

CPC classification number: H01F27/29 ,  H01F27/255 ,  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：US11664150B2

公开(公告)日：2023-05-30

申请号：US16840948

申请日：2020-04-06

Applicant: TDK CORPORATION

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

IPC: H01F27/28 ,  H01F27/255 ,  H01F27/29 ,  H01F41/12 ,  H01F17/04

CPC classification number: H01F27/2828 ,  H01F17/04 ,  H01F27/255 ,  H01F27/29 ,  H01F41/127 ,  H01F2017/048

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 conductive resin including a first conductive resin contacting the end portion of the coil conductor, and a second conductive resin contacting the metal film without contacting the end portion of the coil conductor. A specific surface area of the conductive particles contained in the first conductive resin is larger than that of a conductive particles contained in the second conductive resin.

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.