公开(公告)号：US20210257147A1

公开(公告)日：2021-08-19

申请号：US17151063

申请日：2021-01-15

Applicant: TAIYO YUDEN CO., LTD.

Inventor： Kazuki MISAWA ,  Kinshiro TAKADATE ,  Shinsuke TAKEOKA

IPC: H01F27/28 ,  H05K1/18 ,  H01F27/24 ,  H01F41/02 ,  H01F41/06

Abstract: A magnetic base body comprises multiple metal magnetic grains and bonding parts for bonding the multiple metal magnetic grains, wherein the bonding parts are constituted by an amorphous mixture containing carbon and an oxide of at least one element selected from silicon, aluminum, chromium, magnesium, titanium, and zirconium. A coil component using the magnetic base body can improve mechanical strength while ensuring insulation reliability.

公开(公告)号：US20230068049A1

公开(公告)日：2023-03-02

申请号：US17972441

申请日：2022-10-24

Applicant: TAIYO YUDEN CO., LTD.

Inventor： Kazuki MISAWA ,  Kinshiro TAKADATE ,  Shinsuke TAKEOKA

IPC: H01F27/28 ,  H05K1/18 ,  H01F41/02 ,  H01F41/06 ,  H01F27/24

Abstract: A method for manufacturing a coil component includes: providing multiple metal magnetic grains; preparing a magnetic body paste by mixing the multiple metal magnetic grains, a binder resin containing a resinate having at least one element selected from the group consisting of Si, Al, Cr, Mg, Ti, and Zr, and a solvent; forming a compact using the magnetic body paste; heat-treating the compact to form, on surfaces of the metal magnetic grains, bonding parts constituted by an amorphous oxide containing carbon and the at least one element, thereby forming a magnetic base body wherein the multiple metal magnetic grains are bonded via the bonding parts; forming a coil that includes a metal conductor; and forming external eletrodes on surfaces of the magnetic base body and connecting end parts of the coil to the external electrodes, respectively.

公开(公告)号：US20220199303A1

公开(公告)日：2022-06-23

申请号：US17543520

申请日：2021-12-06

Applicant: Taiyo Yuden Co., Ltd.

Inventor： Kinshiro TAKADATE ,  Atsushi TANADA ,  Kengo TSUCHIYA

IPC: H01F1/147 ,  H05K1/18 ,  H01F41/02 ,  H01F41/04

Abstract: One aspect of the present invention is a coil component comprising: a magnetic substrate formed with magnetic metal particles containing Fe, Si and Cr, and a bonding layer containing oxygen and nitrogen that bonds the magnetic metal particles to each other; and a conductor arranged inside or on the surface of the magnetic substrate.

公开(公告)号：US20200312498A1

公开(公告)日：2020-10-01

申请号：US16832445

申请日：2020-03-27

Applicant: TAIYO YUDEN CO., LTD.

Inventor： Kinshiro TAKADATE ,  Shinsuke TAKEOKA

IPC: H01F1/147 ,  H01F27/32 ,  H01F27/255 ,  H01F41/12 ,  H01F41/02

Abstract: A magnetic base body relating to one embodiment of the present invention includes a main body and an oxide film formed on the surface of the main body. The main body includes an oxide phase containing Si and a plurality of metal magnetic particles bound via the oxide phase. In the metal magnetic particles, Fe accounts for 98.5 wt % or more. When an XRD diffraction pattern of the magnetic base body is observed, a ratio Ia/Ib is 10 or more where Ia denotes an integrated intensity of peaks derived from the (220) plane of Fe2O3 and Ib denotes an integrated intensity of peaks derived from the (104) plane of Fe3O4.