公开(公告)号：US20170287636A1

公开(公告)日：2017-10-05

申请号：US15466316

申请日：2017-03-22

Applicant: TDK CORPORATION

Inventor： Dan SAKURAI ,  Nobuto MORIGASAKI ,  Tatsuya ISHII ,  Takuma ARIIZUMI ,  Shinsuke HASHIMOTO ,  Yasuhiro ITO

IPC: H01G4/12 ,  H01G4/248 ,  C04B35/49 ,  H01G4/30

CPC classification number: H01G4/1245 ,  C04B35/4682 ,  C04B35/49 ,  C04B35/6263 ,  C04B35/62675 ,  C04B35/62685 ,  C04B35/6342 ,  C04B2235/3206 ,  C04B2235/3208 ,  C04B2235/3213 ,  C04B2235/3215 ,  C04B2235/3217 ,  C04B2235/3224 ,  C04B2235/3225 ,  C04B2235/3232 ,  C04B2235/3236 ,  C04B2235/3241 ,  C04B2235/3244 ,  C04B2235/3249 ,  C04B2235/3262 ,  C04B2235/3418 ,  C04B2235/442 ,  C04B2235/6562 ,  C04B2235/6567 ,  C04B2235/6582 ,  C04B2235/6584 ,  C04B2235/663 ,  C04B2235/75 ,  C04B2235/768 ,  C04B2237/346 ,  C04B2237/68 ,  C04B2237/704 ,  H01G4/248 ,  H01G4/30

Abstract: A dielectric ceramic composition has good characteristics even under the high electric field intensity, and particularly good IR characteristic and the high temperature accelerated lifetime. The dielectric ceramic composition has a main component having a perovskite type compound shown by a compositional formula (Ba1-x-ySrxCay)m(Ti1-zZrz)O3, a first sub component having oxides of a rare earth element R, a second sub component as a sintering agent, wherein the dielectric particles has dielectric particles having high diffusion rate of the rare earth element, preferably of a complete solid solution particle, and when a concentration of Ti atom in the diffusion phase is 100 atom %, then an average concentration of the rare earth element R in the diffusion phase is 5 atom % or more, and an average concentration of Zr in the diffusion phase is 10 atom % or more.

公开(公告)号：US20250022629A1

公开(公告)日：2025-01-16

申请号：US18897309

申请日：2024-09-26

Applicant: TDK Corporation

Inventor： Hiroshi SHINGAI ,  Keisuke NISHIOKA ,  Haruna OGAWA ,  Shinsuke HASHIMOTO

IPC: H01B1/22 ,  H01B17/64

Abstract: A conductive film includes a base material 1, a first resin layer 10 provided on the base material 1, a second resin layer 20 provided on the first resin layer 10 and having a trench 25 opening to a surface opposite to the first resin layer 10, and a conductive layer 30 provided in the trench 25. The first resin layer 10 contains a first resin portion 12 and a plurality of first inorganic particles 11. At least a part of the plurality of first inorganic particles 11 partially protrude from the first resin portion 12 toward the second resin layer 20.

公开(公告)号：US20250014775A1

公开(公告)日：2025-01-09

申请号：US18897160

申请日：2024-09-26

Applicant: TDK Corporation

Inventor： Hiroshi SHINGAI ,  Keisuke NISHIOKA ,  Haruna OGAWA ,  Shinsuke HASHIMOTO

IPC: H01B1/22 ,  H01B17/64

Abstract: A conductive film including a film-like base material and a conductive layer provided on one main surface side of the base material is provided. The conductive layer includes a first metal layer containing a first metal and a second metal layer containing a second metal different from the first metal, provided in order from the base material side. The first metal layer includes grain boundaries.

公开(公告)号：US20210335526A1

公开(公告)日：2021-10-28

申请号：US17242924

申请日：2021-04-28

Applicant: TDK CORPORATION

Inventor： Yasuhide YAMASHITA ,  Kotaro TERAO ,  Shinsuke HASHIMOTO

IPC: H01F1/34

Abstract: A core can be used for an electronic component, and composite particles constitute the core. The composite particles contain magnetic large particles, small particles directly or indirectly attached to surfaces of the large particles and have an average particle size smaller than an average particle size of the large particles, and a mutual buffer film covering at least part of the surfaces of the large particles located between the small particles existing around the large particles. When the average particle size of the large particles is R, the average particle size of the small particles is r, and an average thickness of the mutual buffer film is t, (r/R) is 0.0012 or more and 0.025 or less, (t/r) is larger than 0 and 0.7 or less, and r is 12 nm or more and 100 nm or less.

公开(公告)号：US20210391112A1

公开(公告)日：2021-12-16

申请号：US17242494

申请日：2021-04-28

Applicant: TDK CORPORATION

Inventor： Yasuhide YAMASHITA ,  Kotaro TERAO ,  Shinsuke HASHIMOTO

IPC: H01F27/255 ,  B22F1/02 ,  H01F3/08

Abstract: An electronic component having excellent DC superimposition characteristic and initial magnetic permeability, a core used for the electronic component, and a element body constituting the core are provided. The element body has magnetic large particles and at least one spacer region, wherein one or more small particles having an average particle size smaller than that of the magnetic large particles exist as spacers to form the spacer region between the large particles in a field of view within a predetermined range where 10 or more and 40 or less of the large particles are observable in a cross section of the element body.

公开(公告)号：US20170287635A1

公开(公告)日：2017-10-05

申请号：US15466224

申请日：2017-03-22

Applicant: TDK CORPORATION

Inventor： Dan SAKURAI ,  Nobuto MORIGASAKI ,  Tatsuya ISHII ,  Takuma ARIIZUMI ,  Shinsuke HASHIMOTO ,  Yasuhiro ITO

IPC: H01G4/12 ,  H01G4/248 ,  C04B35/64 ,  C04B35/49 ,  C04B35/63 ,  C04B35/626 ,  H01G4/30 ,  H01G4/012

CPC classification number: H01G4/1245 ,  C01G25/006 ,  C04B35/4682 ,  C04B35/49 ,  C04B35/6261 ,  C04B35/62675 ,  C04B35/6303 ,  C04B35/638 ,  C04B35/64 ,  C04B2235/3203 ,  C04B2235/3206 ,  C04B2235/3208 ,  C04B2235/3213 ,  C04B2235/3215 ,  C04B2235/3217 ,  C04B2235/3224 ,  C04B2235/3225 ,  C04B2235/3227 ,  C04B2235/3229 ,  C04B2235/3236 ,  C04B2235/3241 ,  C04B2235/3249 ,  C04B2235/3262 ,  C04B2235/3272 ,  C04B2235/3275 ,  C04B2235/3287 ,  C04B2235/3409 ,  C04B2235/3418 ,  C04B2235/652 ,  C04B2235/6562 ,  C04B2235/6565 ,  C04B2235/6567 ,  C04B2235/6584 ,  C04B2235/662 ,  C04B2235/768 ,  C04B2235/81 ,  C04B2235/96 ,  H01G4/012 ,  H01G4/248 ,  H01G4/30

Abstract: A dielectric ceramic composition having good characteristic even under high electric field intensity, and particularly good IR characteristic and high temperature accelerated lifetime. The present invention is a dielectric ceramic composition comprising, a main component comprising a perovskite type compound shown by a compositional formula (Ba1-x-ySrxCay)m(Ti1-zZrz)O3, a first sub component comprising oxides of a rare earth element, a second sub component as a sintering agent, wherein said dielectric ceramic composition is a complete solid solution particle wherein the rare earth element is solid dissolved to entire dielectric particle, or a core-shell particle having high ratio of the diffusion phase, and comprises the dielectric particle having 5 to 20 atom % of the average concentration of the rare earth element in the diffusion phase, and having uniform concentration distribution of the rare earth element in the diffusion phase.