公开(公告)号：US20230092845A1

公开(公告)日：2023-03-23

申请号：US17945485

申请日：2022-09-15

Applicant: TDK CORPORATION

Inventor： Hiromichi UMEHARA ,  Keisuke TAKASUGI ,  Takehiro ISODA ,  Kenji INAGE

IPC: G01R33/09 ,  G01R33/02 ,  G01R33/00

Abstract: A magnetic sensor includes an insulating layer including a flat portion and a protruding portion, a first MR element, and a second MR element. The protruding portion includes a first inclined surface and a second inclined surface. The first MR element is disposed on the first inclined surface. The second MR element is disposed on the second inclined surface. The protruding portion extends in a first direction parallel to a top surface of a substrate, and includes a plurality of recess portions each recessed in a direction parallel to the top surface of the substrate at an end of the protruding portion in the first direction.

公开(公告)号：US20230087727A1

公开(公告)日：2023-03-23

申请号：US17949557

申请日：2022-09-21

Applicant: TDK CORPORATION

Inventor： Takehiro ISODA ,  Norikazu OTA ,  Daichi TAKANO ,  Kenji INAGE

IPC: G01R33/09 ,  G01R33/02

Abstract: A magnetic sensor includes a plurality of resistor sections each including a plurality of MR elements, and a plurality of protruding surfaces each structured to cause the plurality of MR elements to detect a specific component of a target magnetic field. The plurality of MR elements are disposed dividedly in first to fourth areas corresponding respectively to the plurality of resistor sections. The plurality of protruding surfaces include a structural body extending across at least two of the first to fourth areas.

公开(公告)号：US20250155526A1

公开(公告)日：2025-05-15

申请号：US18929851

申请日：2024-10-29

Applicant: TDK Corporation

Inventor： Kazuya WATANABE ,  Hiraku Hirabayashi ,  Takehiro ISODA

IPC: G01R33/00 ,  G01R33/09

Abstract: A magnetic field generator is configured to generate a magnetic field to be applied to the magnetic sensor. A conductor layer of the magnetic field generator includes a first end, a second end, a plurality of main wirings, a first sub-wiring, and a second sub-wiring. The first sub-wiring includes a plurality of first paths from the first end to each of the plurality of main wirings through a plurality of first coupling portions. The second sub-wiring includes a plurality of second paths from the second end to each of the plurality of main wirings through a plurality of second coupling portions. The number of the plurality of first coupling portions through which each of any two of the first paths passes is the same. The number of the plurality of second coupling portions through which each of any two of the second paths passes is the same.

公开(公告)号：US20250003770A1

公开(公告)日：2025-01-02

申请号：US18751399

申请日：2024-06-24

Applicant: TDK Corporation

Inventor： Takehiro ISODA ,  Takafumi KOBAYASHI

IPC: G01D5/16 ,  G02B7/08

Abstract: A magnetic sensor includes a soft magnetic structure including at least one yoke, and magnetoresistive (MR) elements configured to detect a magnetic field generated by the at least one yoke, the MR elements being adjacent to the at least one yoke in a transverse direction of the at least one yoke. The soft magnetic structure further includes at least one additional magnetic body arranged next to the at least one yoke in a longitudinal direction of the at least one yoke and located off the at least one yoke in an orthogonal direction orthogonal to the longitudinal direction.

公开(公告)号：US20240310460A1

公开(公告)日：2024-09-19

申请号：US18541031

申请日：2023-12-15

Applicant: TDK CORPORATION

Inventor： Takehiro ISODA ,  Norikazu OTA ,  Kazuya WATANABE ,  Hiraku HIRABAYASHI

IPC: G01R33/09 ,  H10N50/01 ,  H10N50/10 ,  H10N50/80

CPC classification number: G01R33/091 ,  G01R33/093 ,  H10N50/01 ,  H10N50/10 ,  H10N50/80

Abstract: A magnetic sensor includes a soft magnetic body having a first end surface and a second end surface located on opposite sides, a first MR element located near the first end surface, a second MR element located near the second end surface, and a first lead that electrically connects the first MR element and the second MR element and includes a portion overlapping the soft magnetic body when observed in a second direction orthogonal to a first direction in which the first and second MR elements are arranged.