公开(公告)号：US12243675B2

公开(公告)日：2025-03-04

申请号：US17490893

申请日：2021-09-30

Applicant: TDK CORPORATION

Inventor： Yusuke Nagai ,  Takashi Suzuki ,  Kazuhiro Ebina ,  Kunihiko Kawasaki ,  Shinichi Kondo ,  Keito Yasuda ,  Ryuichi Wada ,  Makoto Morita ,  Takashi Kudo ,  Kyohei Tonoyama

IPC: H01F5/00 ,  H01F17/00 ,  H01F17/04 ,  H01F27/29

Abstract: In a multilayer coil component, a part filled with a resin and a void part not filled with the resin exist between a plurality of metal magnetic particles in an element body, one main surface of the element body is a mounting surface with respect to an external electronic component, and the edge of an external electrode is positioned on the mounting surface. In the element body, a high void region where the porosity caused by the void part is higher than the porosity of the other part in the element body extends from the edge of the external electrode on the mounting surface toward an end surface of the element body.

公开(公告)号：US10998129B2

公开(公告)日：2021-05-04

申请号：US15895039

申请日：2018-02-13

Applicant: TDK CORPORATION

Inventor： Yuya Ishima ,  Shinichi Kondo ,  Shunji Aoki ,  Yasushi Matsuyama ,  Yusuke Onezawa ,  Hajime Azuma

IPC: H01F7/06 ,  H01F41/04 ,  H01F27/28 ,  H01F41/02 ,  B32B37/00 ,  B32B38/00

Abstract: A method for manufacturing a laminated coil component including an element and a conductor configuring a coil in the element includes a step of forming a conductor pattern including a configuration material of the conductor on a first base material by a photolithography method, a step of forming an element pattern including a configuration material of the element on a second base material by a photolithography method, the element pattern being formed such that a shape corresponding to a shape of the conductor pattern has been removed, a step of laminating the conductor pattern and the element pattern in a predetermined direction by repeatedly transferring the conductor pattern and the element pattern onto a support, and a step of performing thermal treatment for a laminate obtained by the step of laminating.

公开(公告)号：US10886063B2

公开(公告)日：2021-01-05

申请号：US15906589

申请日：2018-02-27

Applicant: TDK CORPORATION

Inventor： Yuya Ishima ,  Shunji Aoki ,  Shinichi Kondo ,  Yasushi Matsuyama ,  Hajime Azuma ,  Yusuke Onezawa

IPC: H01F27/28 ,  H01F41/04 ,  G03F7/20 ,  B32B38/00 ,  G03F7/26 ,  B32B37/10 ,  H01F41/10 ,  H01F27/29

Abstract: An electronic-component manufacturing method is for simultaneously manufacturing a plurality of electronic components each including an element body and a conductor. The electronic-component manufacturing method includes the steps of forming laminates to be the plurality of electronic components on a plurality of regions set apart from each other on a surface of a first substrate, releasing the laminates from the plurality of regions, and performing heat treatment to the laminates. The forming the laminates includes a first step of forming element-body patterns on the plurality of regions and a second step of forming conductor patterns on the plurality of regions. The element-body patterns contain a constituent material of the element bodies and are patterned for the plurality of regions. The conductor patterns contain a constituent material of the conductors and are patterned for the plurality of regions.

公开(公告)号：US10781132B2

公开(公告)日：2020-09-22

申请号：US15887281

申请日：2018-02-02

Applicant: TDK CORPORATION

Inventor： Shusaku Umemoto ,  Takashi Suzuki ,  Hidekazu Sato ,  Masaki Takahashi ,  Shinichi Kondo

IPC: H01F27/29 ,  C03C14/00 ,  C03C10/00 ,  C03C3/093 ,  C03C4/16 ,  H01F27/32

Abstract: Provided is a glass ceramics sintered body including a glass phase and a ceramics phase dispersed in the glass phase, in which the ceramics phase includes alumina grains and zirconia grains, the glass phase includes an MO—Al2O3—SiO2—B2O3 based glass, in which “M” is an alkaline earth metal, and an area ratio of the alumina grains is 0.05 to 12% and the area ratio of the zirconia grains is 0.05 to 6% on the cross section of the sintered body. According to the invention, a glass ceramics sintered body, capable of a low temperature sintering having a low dielectric constant and a sufficient strength, and a coil electronic component using thereof can be provided.

公开(公告)号：US20180254145A1

公开(公告)日：2018-09-06

申请号：US15906589

申请日：2018-02-27

Applicant: TDK CORPORATION

Inventor： Yuya Ishima ,  Shunji Aoki ,  Shinichi Kondo ,  Yasushi Matsuyama ,  Hajime Azuma ,  Yusuke Onezawa

IPC: H01F41/04 ,  H01F27/28 ,  G03F7/20 ,  B32B38/00 ,  B32B37/10 ,  G03F7/26

CPC classification number: H01F41/041 ,  B32B37/10 ,  B32B38/0036 ,  B32B2457/00 ,  G03F7/2022 ,  G03F7/26 ,  G03F7/70 ,  H01F27/2804 ,  H01F27/292 ,  H01F41/10 ,  H01F2027/2809

Abstract: An electronic-component manufacturing method is for simultaneously manufacturing a plurality of electronic components each including an element body and a conductor. The electronic-component manufacturing method includes the steps of forming laminates to be the plurality of electronic components on a plurality of regions set apart from each other on a surface of a first substrate, releasing the laminates from the plurality of regions, and performing heat treatment to the laminates. The forming the laminates includes a first step of forming element-body patterns on the plurality of regions and a second step of forming conductor patterns on the plurality of regions. The element-body patterns contain a constituent material of the element bodies and are patterned for the plurality of regions. The conductor patterns contain a constituent material of the conductors and are patterned for the plurality of regions.

公开(公告)号：US09824804B2

公开(公告)日：2017-11-21

申请号：US15089992

申请日：2016-04-04

Applicant: TDK CORPORATION

Inventor： Hiroki Choto ,  Takeshi Shibayama ,  Takashi Suzuki ,  Shinichi Kondo ,  Yuya Oshima ,  Masaki Takahashi

IPC: H01F17/04 ,  H01F1/34 ,  H01F17/00 ,  H01F27/29

CPC classification number: H01F1/344 ,  H01F17/0013 ,  H01F17/04 ,  H01F27/292 ,  H01F2017/048

Abstract: Provided is a composite ferrite composition including a magnetic substance material and a nonmagnetic substance material. The magnetic substance material is Ni—Cu—Zn based ferrite. The nonmagnetic substance material comprises a low dielectric constant nonmagnetic substance material, which is shown by a general formula: a(bZnO.cCuO).SiO2 and satisfies a=1.5 to 2.4, b=0.85 to 0.98, c=0.02 to 0.15, and b+c=1.00 in said general formula, and a bismuth oxide. A mixing ratio of the magnetic substance material and the low dielectric constant nonmagnetic substance material is 80 wt %:20 wt % to 10 wt %:90 wt %.

公开(公告)号：US12300409B2

公开(公告)日：2025-05-13

申请号：US17571640

申请日：2022-01-10

Applicant: TDK CORPORATION

Inventor： Shinichi Kondo ,  Takashi Inagaki ,  Ryuichi Wada ,  Yusuke Nagai ,  Takashi Suzuki

IPC: H01F1/147 ,  C08G59/38 ,  C08K9/02 ,  C22C38/02 ,  H01F27/255 ,  H01F41/02 ,  H01F41/04

Abstract: A multilayer coil device includes an element formed by laminating a coil conductor and a magnetic element body. The magnetic element body includes soft magnetic particles and an epoxy resin. The soft magnetic particles include soft magnetic metal particles. The epoxy resin has an epoxy value of 150 or less. The epoxy resin is filled in gap spaces between the soft magnetic particles.

公开(公告)号：US20250029774A1

公开(公告)日：2025-01-23

申请号：US18772848

申请日：2024-07-15

Applicant: TDK Corporation

Inventor： Yuya Oshima ,  Kouichi Kakuda ,  Kenji Komorita ,  Takuya Niibori ,  Shinichi Kondo ,  Shigeshi Osawa ,  Kaori Sasaki ,  Makoto Yoshino ,  Kazuma Sugawara

IPC: H01F27/28 ,  H01F27/29

Abstract: A coil component includes an element body including a pair of end surfaces opposing each other, and a coil disposed in the element body. The coil includes at least one coil conductor. The element body includes a pair of first element body portions each including a corresponding end surface of the pair of end surfaces, and a second element body portion between the pair of first element body portions. The second element body portion includes a first region and a second region disposed at positions different from each other in the direction. The second region has relative permeability smaller than relative permeability of the first region and relative permittivity smaller than relative permittivity of the first region. The at least one coil conductor includes a coil conductor disposed in the second element body portion.

公开(公告)号：US12040111B2

公开(公告)日：2024-07-16

申请号：US17486258

申请日：2021-09-27

Applicant: TDK CORPORATION

Inventor： Yusuke Nagai ,  Takashi Suzuki ,  Kazuhiro Ebina ,  Kouichi Kakuda ,  Kunihiko Kawasaki ,  Shinichi Kondo ,  Shinichi Sato ,  Seiichi Nakagawa ,  Mitsuharu Koike ,  Kazuhiro Miura

IPC: H01F1/28 ,  H01F5/00

CPC classification number: H01F1/28 ,  H01F5/003

Abstract: A multilayer coil component includes an element body containing a plurality of metal magnetic particles and a resin existing between the plurality of metal magnetic particles and a coil disposed in the element body and configured to include a plurality of electrically interconnected coil conductors. At least one of the plurality of coil conductors has a spiral shape and has conductor portions adjacent to each other when viewed from a direction along a coil axis of the coil. The conductor portion includes a straight conductor portion extending in a straight line and a connecting conductor portion connecting the straight conductor portion and constituting a corner portion of the coil conductor. The metal magnetic particles between the connecting conductor portions adjacent to each other are lower in density than the metal magnetic particles between the straight conductor portions adjacent to each other.

公开(公告)号：US11915852B2

公开(公告)日：2024-02-27

申请号：US16922533

申请日：2020-07-07

Applicant: TDK CORPORATION

Inventor： Yuya Ishima ,  Shinichi Kondo ,  Kosuke Ito ,  Shingo Hattori ,  Kazuya Tobita ,  Noriaki Hamachi ,  Atsushi Moriya

IPC: H01F5/00 ,  H01F27/28 ,  H01F41/04 ,  H01F27/29

CPC classification number: H01F27/2804 ,  H01F27/29 ,  H01F41/043 ,  H01F2027/2809

Abstract: An electronic component according to an aspect of the present disclosure includes an element body and a terminal electrode. The element body includes an outer surface provided with a depression. The terminal electrode is disposed on the element body. The terminal electrode includes a first electrode portion and a second electrode portion. The first electrode portion is disposed in the depression. The second electrode portion protrudes from the depression. The second electrode portion is thicker than the first electrode portion.