公开(公告)号：US20210012961A1

公开(公告)日：2021-01-14

申请号：US17042523

申请日：2019-03-15

Applicant: TDK CORPORATION

Inventor： Shota SUZUKI ,  Nobuyuki OKUZAWA ,  Daisuke HIROSE ,  Shirou OOTSUKI ,  Wakiko SATO

IPC: H01G4/12 ,  H01B3/12 ,  H01G4/33 ,  H01G4/30 ,  C04B35/495 ,  C04B35/453

Abstract: A dielectric composition including a complex oxide containing bismuth, zinc, and niobium, includes a crystal phase formed of the complex oxide and having a pyrochlore type crystal structure, and an amorphous phase. When the complex oxide is represented by a composition formula BixZnyNbzO1.75+δ, in which x, y, and z satisfy relations of x+y+z=1.00, 0.20≤y≤0.50, and 2/3≤x/z≤3/2.

公开(公告)号：US20250111969A1

公开(公告)日：2025-04-03

申请号：US18892837

申请日：2024-09-23

Applicant: TDK Corporation

Inventor： Nobuyuki OKUZAWA ,  Ryuji HASHIMOTO ,  Yuiko HIROSE ,  Yuta TAKAHASHI ,  Hiroki HOSAKA ,  Koki ENDO

IPC: H01F5/04 ,  H01F1/03 ,  H01F5/06 ,  H01F17/02

Abstract: A coil component includes an element body formed by laminating a plurality of insulator layers, and a pillar part disposed in the element body and extending in a lamination direction of the plurality of insulator layers. The pillar part has a plurality of pillar members laminated in the lamination direction. Between the two pillar members in the lamination direction, a defining part that defines a contact surface between the two pillar members is provided. The defining part is formed of a material different from a material of the pillar part, and is disposed at edges of the two pillar members when viewed from the lamination direction.

公开(公告)号：US20230307164A1

公开(公告)日：2023-09-28

申请号：US18166262

申请日：2023-02-08

Applicant: TDK Corporation.

Inventor： Munehiro TAKAKU ,  Nobuyuki OKUZAWA ,  Kazuya TOBITA ,  Teruhiro MITSUYASU

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

CPC classification number: H01F5/04 ,  H01F27/2804 ,  H01F27/292

Abstract: Provided is a multilayer coil component including an element body, a first terminal electrode, a second terminal electrode, a coil, a first connecting conductor, and a second connecting conductor, wherein a length of each of the first connecting conductor and the second connecting conductor in a first direction is longer than lengths of pillar portions connected to the first connecting conductor and the second connecting conductor in the first direction and equal to or less than lengths of the first terminal electrode and the second terminal electrode in the first direction.

公开(公告)号：US20230207182A1

公开(公告)日：2023-06-29

申请号：US17969339

申请日：2022-10-19

Applicant: TDK CORPORATION

Inventor： Nobuyuki OKUZAWA ,  Kazuya TOBITA ,  Munehiro TAKAKU ,  Teruhiro MITSUYASU

IPC: H01F27/28 ,  H01F27/32 ,  H01F27/29 ,  H01F27/02

CPC classification number: H01F27/2823 ,  H01F27/327 ,  H01F27/292 ,  H01F27/022

Abstract: A multilayer coil component includes an element body including a main surface (a mounting surface) and a main surface, a pair of terminal electrodes disposed on the main surface of the element body, and a coil that is disposed in the element body and electrically connected to the pair of terminal electrodes, wherein the element body includes at least one element body layer containing a filler and at least one element body layer having a lower dielectric constant than the element body layer between a first wiring portion and the terminal electrodes.

公开(公告)号：US20200294687A1

公开(公告)日：2020-09-17

申请号：US16818413

申请日：2020-03-13

Applicant: TDK Corporation

Inventor： Shota SUZUKI ,  Nobuyuki OKUZAWA

IPC: H01B3/10

Abstract: A dielectric composition contains a complex oxide represented by a composition formula of BixZnyNbzO1.75+δ. x+y+z=1.00. x