公开(公告)号：US12205873B2

公开(公告)日：2025-01-21

申请号：US18210291

申请日：2023-06-15

Applicant: TDK CORPORATION

Inventor： Yosuke Komasaki ,  Hiroshi Naganuma ,  Naoki Ohta

IPC: H01L23/495 ,  H01L23/00 ,  H01L25/03

Abstract: An electronic component package has an outer edge including a first side and a second side adjacent to each other. The electronic component package includes a first electronic component chip, a second electronic component chip provided at a distance from the first electronic component chip, one or more first terminals disposed along the first side, one or more second terminals disposed along the second side, and one or more first conductors. The one or more first conductors couple the one or more first terminals to the first electronic component chip, with the one or more first terminals being uncoupled to the second electronic component chip.

公开(公告)号：US10527687B2

公开(公告)日：2020-01-07

申请号：US15676117

申请日：2017-08-14

Applicant: TDK Corporation

Inventor： Naoki Ohta ,  Keisuke Takasugi

IPC: G01R33/09 ,  G01R33/00 ,  G01R33/05 ,  H01R43/12

Abstract: A magnetic sensor that is easy to ensure the height of the yoke and that is also easy to guide magnetic flux in the direction in which the magnetic field sensing film detects a magnetic field is provided. The magnetic sensor includes first magnetic field detection element 21 that has first magnetic field sensing film 38 that detects a magnetic field in first direction X, and first yoke 23 that includes first portion 23a that is located on a side of first magnetic field sensing film 38 with respect to first direction X, and second portion 23b that is in contact with first portion 23a in direction Z that is orthogonal to first direction X. The average dimension of second portion 23b in first direction X is larger than the average dimension of first portion 23a in first direction X.

公开(公告)号：US10396786B2

公开(公告)日：2019-08-27

申请号：US16160046

申请日：2018-10-15

Applicant: TDK Corporation

Inventor： Naoki Ohta

IPC: H03K17/972 ,  H01H13/705 ,  H01H13/14

Abstract: A key input apparatus includes a key top capable of moving up and down through a pressing operation; a first substrate, which includes a first surface, which is positioned on the key top side, and a second surface, which is opposite to the first surface, and the first substrate supports the key top and is provided to be movable up and down along with the key top; a second substrate, which is provided between the key top and the first substrate in the direction of the up-and-down movement of the key top, and the second substrate includes a first surface, which is positioned on the first substrate side, and a second surface, which is opposite to the first surface; a magnetic field generation unit; a magnetic sensor unit, which includes a magnetic detection element that detects a magnetic field generated from the magnetic field generation unit; and an adhesion unit, which includes a soft magnetic material capable of adhering to the magnetic field generation unit. The magnetic sensor unit and the adhesion unit are provided on one of the first surface of the first substrate and the first surface of the second substrate, and the magnetic field generation unit is provided on the other of the first surface of the first substrate and the first surface of the second substrate, opposite to the adhesion unit.

公开(公告)号：US12216183B2

公开(公告)日：2025-02-04

申请号：US17896859

申请日：2022-08-26

Applicant: TDK CORPORATION

Inventor： Tetsuya Hiraki ,  Kenzo Makino ,  Naoki Ohta

IPC: G01R33/09

Abstract: A magnetic sensor includes a first path and a second path, a plurality of structures, and a plurality of first electrodes and a plurality of second electrodes. The first path includes at least one first array. The second path includes at least one second array. The at least one first array and the at least one second array are disposed so that they are arranged in a first direction. The at least one first array and the at least one second array each include an odd number of structures disposed so that they are arranged in a second direction.

公开(公告)号：US20240304361A1

公开(公告)日：2024-09-12

申请号：US18595669

申请日：2024-03-05

Applicant: TDK CORPORATION

Inventor： Maiko KOKUBO ,  Shinji Hara ,  Naoki Ohta ,  Susumu Aoki

IPC: H01C7/00 ,  G01J5/20

CPC classification number: H01C7/008 ,  G01J5/20 ,  G01J2005/202

Abstract: A thermistor element includes: a thermistor film formed of an oxide having a spinel crystal structure; a first surface-side electrode provided in contact with a first surface of the thermistor film; and a second surface-side electrode provided in contact with a second surface of the thermistor film, wherein the first surface-side electrode includes a first electrode and a second electrode, and at least a part of the first electrode and at least a part of the second electrode are disposed to overlap the second surface-side electrode, and in the thermistor film, an oxygen concentration of a second region between the first electrode and the second electrode in a plan view is higher than that of a first region consisting of a region that overlaps the first electrode and the second surface-side electrode and a region that overlaps the second electrode and the second surface-side electrode.

公开(公告)号：US11480477B2

公开(公告)日：2022-10-25

申请号：US16969015

申请日：2018-03-06

Applicant: TDK Corporation

Inventor： Shinji Hara ,  Naoki Ohta ,  Susumu Aoki ,  Eiji Komura ,  Akimasa Kaizu

IPC: G01K7/22 ,  H01C7/06

Abstract: A heat utilizing device is provided in which the thermal resistance of the wiring layer is increased while an increase in electric resistance of the wiring layer is limited. Heat utilizing device has thermistor whose electric resistance changes depending on temperature; and wiring layer that is connected to thermistor. A mean free path of phonons in wiring layer is smaller than a mean free path of phonons in an infinite medium that consists of a material of wiring layer.

公开(公告)号：US11450803B2

公开(公告)日：2022-09-20

申请号：US16735909

申请日：2020-01-07

Applicant: TDK Corporation

Inventor： Naoki Ohta

IPC: H01L45/00

Abstract: A resistance change element includes a first lead electrode, a resistance change layer provided on the first lead electrode, and a second lead electrode provided on the resistance change layer. The surface of the first lead electrode on the resistance change layer side includes a first region in which the resistance change layer is provided, and a second region that is a region other than the first region. In the second region, a second material having a work function that is larger than that of a first material configuring the first lead electrode is unevenly distributed.

公开(公告)号：US11131727B2

公开(公告)日：2021-09-28

申请号：US16577036

申请日：2019-09-20

Applicant: TDK Corporation

Inventor： Naoki Ohta ,  Yongfu Cai

IPC: G01R33/09 ,  H01F10/32

Abstract: A magnetic sensor device having a spin-valve-type magnetoresistive effect element and capable of stably applying a bias magnetic field on the free layer of the magnetoresistive effect element includes a spin-valve-type magnetoresistive effect element, a substrate on which the magnetoresistive effect element is positioned, a power source that supplies a substantially constant electric current applied on the magnetoresistive effect element, and a magnetic field generator that is connected to the electric current path of the electric current applied on the magnetoresistive effect element in series. The magnetic field generator is provided to be capable of applying a bias magnetic field on at least a portion of the magnetoresistive effect element. The magnetic field generator is close to a portion of the magnetoresistive effect element and is positioned at a different level from the substrate.

公开(公告)号：US10890629B2

公开(公告)日：2021-01-12

申请号：US16044967

申请日：2018-07-25

Applicant: TDK CORPORATION

Inventor： Naoki Ohta

IPC: G01R33/09 ,  G01R33/02 ,  G01R33/00 ,  H01L43/08 ,  H01L27/22 ,  B82Y25/00

Abstract: A magnetic sensor includes first and second yokes, first and second magnetoresistive elements, and a current path for passing a current through the first and second magnetoresistive elements. Each of the first and second yokes receives an input magnetic field containing an input magnetic field component in a direction parallel to a first virtual straight line Lz, and generates an output magnetic field. The output magnetic field contains an output magnetic field component in a direction parallel to a second virtual straight line Lx orthogonal to the first virtual straight line Lz. The first and second magnetoresistive elements generate respective detection values corresponding to the output magnetic field components of the output magnetic fields generates by the first and second yokes. The first and second yokes are electrically continuous with the first and second magnetoresistive elements, respectively.

公开(公告)号：US11769613B2

公开(公告)日：2023-09-26

申请号：US17539480

申请日：2021-12-01

Applicant: TDK CORPORATION

Inventor： Susumu Aoki ,  Shinji Hara ,  Naoki Ohta ,  Maiko Shirokawa ,  Eiji Komura

IPC: H01C7/00 ,  H01C1/14 ,  H01C7/04

CPC classification number: H01C7/008 ,  H01C1/1413 ,  H01C7/041 ,  H01C7/043

Abstract: A thermistor element includes: a thermistor film; a first electrode provided in contact with one surface of the thermistor film; and a pair of second electrodes provided in contact with an other surface of the thermistor film, wherein the thermistor film is provided to cover a periphery of the first electrode.