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公开(公告)号：US20240345187A1
公开(公告)日：2024-10-17
申请号：US18751629
申请日：2024-06-24
Applicant: TDK CORPORATION
Inventor： Keita Kawamori , Hiraku Hirabayashi , Hiromichi Umehara
IPC: G01R33/09
CPC classification number: G01R33/09
Abstract: A magnetic sensor includes an insulating layer, a coil element disposed on the insulating layer, and a first insulating film. The insulating layer includes a first inclined surface and a second inclined surface. The coil element includes a first side surface and a second side surface. The first side surface includes a first portion and a second portion, the second portion being disposed at a position farther from a top surface of a substrate than a position where the first portion is disposed. The first portion is inclined so as to intersect with the first and second inclined surfaces, and is also inclined so as to be closer to the second side surface at positions closer to the top surface of the substrate. The first insulating film covers the first portion.
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2.发明公开公开(公告)号：US20240247932A1
公开(公告)日：2024-07-25
申请号：US18618569
申请日：2024-03-27
Applicant: TDK Corporation
Inventor： Shinichirou MOCHIZUKI
CPC classification number: G01C9/06 , G01R33/0029 , G01R33/0052 , G01R33/0206 , G01R33/09
Abstract: A magnetic sensor device includes first and second surfaces, and first and second inclined surfaces, which are inclined with respect to the first surface; first through third magnetic sensor units for detecting magnetism in first through third axial directions; and a signal processing unit that performs signal processing on the basis of first through third sensor signals output from the first through third magnetic sensor units. The first axial direction is a direction orthogonal to the first surface, and the second and third axial directions are directions orthogonal to each other on the first surface. The first and second magnetic sensor units are provided on the second inclined surface, respectively. A corrected signal generation unit included in the signal processing unit generates first and second corrected signals, which are the first and second sensor signals corrected in accordance with the inclination angles of the first and second inclined surfaces.
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公开(公告)号：US12044752B2
公开(公告)日：2024-07-23
申请号：US17947564
申请日：2022-09-19
Applicant: TDK CORPORATION
Inventor： Keita Kawamori , Hiraku Hirabayashi , Hiromichi Umehara
IPC: G01R33/09
CPC classification number: G01R33/09
Abstract: A magnetic sensor includes an insulating layer, a coil element disposed on the insulating layer, and a first insulating film. The insulating layer includes a first inclined surface and a second inclined surface. The coil element includes a first side surface and a second side surface. The first side surface includes a first portion and a second portion, the second portion being disposed at a position farther from a top surface of a substrate than a position where the first portion is disposed. The first portion is inclined so as to intersect with the first and second inclined surfaces, and is also inclined so as to be closer to the second side surface at positions closer to the top surface of the substrate. The first insulating film covers the first portion.
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公开(公告)号：US20240219484A1
公开(公告)日：2024-07-04
申请号：US18607811
申请日：2024-03-18
Applicant: TDK CORPORATION
Inventor： Kunihiro UEDA , Yoshimitsu WADA , Hiraku HIRABAYASHI , Kazuma YAMAWAKI , Tsuyoshi UMEHARA
CPC classification number: G01R33/0005 , B82Y10/00 , B82Y25/00 , B82Y40/00 , G01R33/0094 , G01R33/09 , G01R33/091 , G01R33/093 , G01R33/096 , G01R33/098 , G01R15/205 , G01R33/0082 , G01R33/07
Abstract: This sensor unit includes a base having a substantially-rectangular planar shape including a first side and a second side that are substantially orthogonal to each other, and a plurality of first sensors provided on the base and arranged on a first axis. The first axis is substantially parallel to the first side and passes through a center position of the base.
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公开(公告)号：US20240192029A1
公开(公告)日：2024-06-13
申请号：US18585959
申请日：2024-02-23
Applicant: TDK Corporation
Inventor： Keisuke UCHIDA , Kazuya WATANABE
CPC classification number: G01D5/16 , G01R33/0005 , G01R33/09 , G01R33/091 , G01R33/093 , G01R33/098
Abstract: The magnetic sensor of the invention has an element portion that is elongate, that exhibits magnetoresistive effect and that has a magnetically sensitive axis in a direction of a short axis thereof. The element portion is non-oval and can be arranged in an imaginary ellipse, wherein the imaginary ellipse has a major axis that connects both ends of the element portion with regard to a direction of a long axis thereof to each other and a minor axis that connects both ends of the element portion with regard to a direction of the short axis thereof to each other, as viewed in a direction that is perpendicular both to the short axis and to the long axis of the element portion.
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Patent Agency Ranking
公开(公告)号：US20240118354A1
公开(公告)日：2024-04-11
申请号：US18376886
申请日：2023-10-05
Applicant: TDK - Micronas GmbH
Inventor： Jörg Franke , David Muthers
IPC: G01R33/09
CPC classification number: G01R33/09
Abstract: A device and a method for compensating a harmonic in an output voltage of at least one xMR sensor assembly is provided. The device includes the at least one xMR sensor assembly including at least one magnetoresistive element, at least one excitation magnet, at least one demodulation unit, a scaling unit and a superposing unit. The method includes detecting the output voltage of the at least one xMR sensor assembly in a demodulation unit, converting the output voltage of the at least one xMR sensor assembly in the demodulation unit, generating a compensation voltage from the demodulation voltage in a scaling unit, and superposing the compensation voltage with the output voltage of the at least one xMR sensor assembly in a superposing unit.
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公开(公告)号：US11940300B2
公开(公告)日：2024-03-26
申请号：US17975131
申请日：2022-10-27
Applicant: TDK Corporation
Inventor： Keisuke Uchida , Kazuya Watanabe
CPC classification number: G01D5/16 , G01R33/0005 , G01R33/09 , G01R33/091 , G01R33/093 , G01R33/098
Abstract: The magnetic sensor of the invention has an element portion that is elongate, that exhibits magnetoresistive effect and that has a magnetically sensitive axis in a direction of a short axis thereof. The element portion is non-oval and can be arranged in an imaginary ellipse, wherein the imaginary ellipse has a major axis that connects both ends of the element portion with regard to a direction of a long axis thereof to each other and a minor axis that connects both ends of the element portion with regard to a direction of the short axis thereof to each other, as viewed in a direction that is perpendicular both to the short axis and to the long axis of the element portion.
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公开(公告)号：US20240069126A1
公开(公告)日：2024-02-29
申请号：US18548969
申请日：2022-02-22
Applicant: TDK Corporation
Inventor： Koji KUROKI , Chengbin LIN
IPC: G01R33/09
CPC classification number: G01R33/09
Abstract: A sensor chip of a magnetic sensor includes a magnetosensitive element, ferromagnetic films forming a magnetic gap overlapping the magnetosensitive element, and a passivation film provided on the ferromagnetic films so as to be filled in the magnetic gap. The ferromagnetic films each include a lower magnetic film and an upper magnetic film. The magnetic gap is configured such that a width between the upper magnetic films is larger than a width between the lower magnetic films. The material of the lower magnetic film is higher in permeability than the material of the upper magnetic film. With the above configuration, magnetic flux is efficiently applied to the magnetosensitive element, making it possible to achieve high detection sensitivity.
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公开(公告)号：US20240061054A1
公开(公告)日：2024-02-22
申请号：US18499261
申请日：2023-11-01
Applicant: Infineon Technologies AG
Inventor： Rainer Markus SCHALLER , Volker STRUTZ , Jochen DANGELMAIER
CPC classification number: G01R33/07 , G01R15/205 , G01R33/09 , G01R15/202
Abstract: A current sensor includes a current rail and a magnetic field sensor. The magnetic field sensor is configured to measure a magnetic field induced by a current flowing through the current rail. A first insulation layer and a second insulation layer are arranged between the current rail and the magnetic field sensor. An interface between the first insulation layer and the second insulation layer is free of a contact with the current rail and/or is free of a contact with the magnetic field sensor. A portion of the current rail extends into the second insulation layer and the portion of the current rail is encapsulated by the second insulation layer.
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公开(公告)号：US20240019505A1
公开(公告)日：2024-01-18
申请号：US18344309
申请日：2023-06-29
Applicant: TDK CORPORATION
Inventor： Kazuma YAMAWAKI , Shuhei MIYAZAKI
IPC: G01R33/09
CPC classification number: G01R33/09
Abstract: A magnetic sensor device includes a sensor substrate and a sensor element circuitry. The sensor substrate has a surface. The sensor element circuitry is provided on the surface of the sensor substrate and includes one or more magnetic sensor elements. As viewed in a plane parallel to the surface, the sensor substrate has a perimeter that is substantially octagonal. The perimeter includes two short sides opposed to each other, two long sides opposed to each other, and four corners. The four corners are each chamfered entirely or partially in a thickness direction that is substantially orthogonal to the surface. A ratio of a length of each of the four corners along each of the two long sides of the sensor substrate to a length of each of the two long sides of the sensor substrate is less than or equal to 0.39.
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