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公开(公告)号：US20230102107A1
公开(公告)日：2023-03-30
申请号：US18074044
申请日：2022-12-02
Applicant: TDK CORPORATION
Inventor： Kenzo MAKINO
Abstract: A magnetic sensor includes first to fourth resistor sections and a plurality of MR elements. Each of the plurality of MR elements belongs to any of first to fourth groups. The first to fourth groups are defined based on the areas of top surfaces of the MR elements. The first resistor section, the second resistor section, the third resistor section, and the fourth resistor section are constituted of the first group, the second group, the third group, and the fourth group, respectively; the second group, the first group, the fourth group, and the third group, respectively; the first group, the fourth group, the third group, and the second group, respectively; or the third group, the second group, the first group, and the fourth group, respectively.
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公开(公告)号：US20230089204A1
公开(公告)日：2023-03-23
申请号：US17895775
申请日：2022-08-25
Applicant: TDK CORPORATION
Inventor： Keisuke TAKASUGI , Kenzo MAKINO , Hiraku HIRABAYASHI , Masanori SAKAI
Abstract: A magnetic sensor includes a first insulating layer, a second insulating layer, a third insulating layer, a lower coil element located on an opposite side of the first insulating layer from the second insulating layer, and a second MR element. The second MR element includes a magnetization pinned layer and a free layer. The magnetization pinned layer and the free layer are located on an opposite side of the third insulating layer from the second insulating layer. The first and third insulating layers each contain a first insulating material. The second insulating layer contains a second insulating material.
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公开(公告)号：US20230089065A1
公开(公告)日：2023-03-23
申请号：US17945546
申请日：2022-09-15
Applicant: TDK CORPORATION
Inventor： Hiromichi UMEHARA , Kenzo MAKINO , Masachika HASHINO
Abstract: A magnetic sensor includes an insulating layer including a protruding surface, a first MR element, and a second MR element. The first MR element is disposed on a first inclined surface of the protruding surface. The second MR element is disposed on a second inclined surface of the protruding surface. The protruding surface includes first to third curved surface portions. Each of the second and third curved surface portions is a curved surface protruding in a direction closer to the top surface of the substrate.
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公开(公告)号：US20220317208A1
公开(公告)日：2022-10-06
申请号：US17218430
申请日：2021-03-31
Applicant: TDK CORPORATION
Inventor： Kenzo MAKINO , Shuhei MIYAZAKI
IPC: G01R33/02
Abstract: A magnetic sensor device includes a first chip including a first magnetic sensor, a second chip including a second magnetic sensor and a third magnetic sensor, and a support having a reference plane. The first magnetic sensor includes at least one first magnetic detection element, and detects a first component of an external magnetic field. The second magnetic sensor includes at least one second magnetic detection element, and detects a second component of the external magnetic field. The third magnetic sensor includes at least one third magnetic detection element, and detects a third component of the external magnetic field. The first chip and the second chip are mounted on the reference plane.
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公开(公告)号：US20220308095A1
公开(公告)日：2022-09-29
申请号：US17825702
申请日：2022-05-26
Applicant: TDK CORPORATION
Inventor： Norikazu OTA , Kenzo MAKINO , Hiraku HIRABAYASHI
Abstract: A magnetic field detection apparatus includes a magnetoresistive effect element and a conductor. The magnetoresistive effect element includes a magnetoresistive effect film extending in a first axis direction and including a first end part, a second end part, and an intermediate part between the first and second end parts. The conductor includes a first part and a second part that each extend in a second axis direction inclined with respect to the first axis direction. The conductor is configured to be supplied with a current and thereby configured to generate an induction magnetic field to be applied to the magnetoresistive effect film in a third axis direction orthogonal to the second axis direction. The first part and the second part respectively overlap the first end part and the second end part in a fourth axis direction orthogonal to both of the second axis direction and the third axis direction.
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Patent Agency Ranking
公开(公告)号：US20190293732A1
公开(公告)日：2019-09-26
申请号：US16294206
申请日：2019-03-06
Applicant: TDK CORPORATION
Inventor： Kenzo MAKINO
Abstract: A magnetoresistive device includes an MR element and a bias magnetic field generation unit. The MR element includes a free layer shaped to be long in one direction. The bias magnetic field generation unit includes a ferromagnetic layer for generating a bias magnetic field. The ferromagnetic layer includes two main portions, a first side portion, and a second side portion arranged to surround the perimeter of the free layer. In any cross section perpendicular to the longitudinal direction of the free layer, a shortest distance between the first side portion and the free layer and a shortest distance between the second side portion and the free layer are 35 nm or less.
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公开(公告)号：US20180292472A1
公开(公告)日：2018-10-11
申请号：US15908066
申请日：2018-02-28
Applicant: TDK CORPORATION
Inventor： Kenzo MAKINO , Suguru WATANABE , Yasushi NISHIOKA , Hirokazu TAKAHASHI
Abstract: A magneto-resistive effect element includes a magnetization free layer, an intermediate layer, and a magnetization pinned layer. The magnetization free layer extends along a first plane. The intermediate layer extends along the first plane, and is stacked on the magnetization free layer. The magnetization pinned layer extends along the first plane, and is provided on side opposite to the magnetization free layer with the intermediate layer being interposed therebetween. Here, the magnetization free layer includes an end surface that has a maximum inclination angle of 42° or less relative to the first plane.
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公开(公告)号：US20170256276A1
公开(公告)日：2017-09-07
申请号：US15059383
申请日：2016-03-03
Applicant: TDK Corporation
Inventor： Tetsuya HIRAKI , Minoru OTA , Hisayoshi WATANABE , Kenzo MAKINO , Hideyuki UKITA
CPC classification number: G11B5/3912 , G11B5/112 , G11B5/3163 , G11B5/3909 , G11B5/3951 , G11B5/3977
Abstract: A multi reader head has a plurality of readers that are laminated via a gap layer(s), and each of the readers has a structure in which a current-perpendicular-to-plane (CPP) type of magneto-resistive effect element, where a current flows along the lamination direction, is interposed between a pair of shields that function as an electrode, respectively, from both sides in the lamination direction. The shields that are opposed from each other via the gap layer of the readers that are adjacent in the lamination direction by a distance that is not constant, but include a portion with a greater distance between the shields and another portion with a smaller distance between the shields are included. The portion with a greater distance between the shields is situated at a position away from the center on an air bearing surface opposing to a recording medium in the magneto-resistive effect element.
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公开(公告)号：US20240272248A1
公开(公告)日：2024-08-15
申请号：US18642004
申请日：2024-04-22
Applicant: TDK CORPORATION
Inventor： Kenzo MAKINO , Takafumi Kobayashi
Abstract: A magnetic sensor includes an MR element and a support member. A top surface of the support member includes an inclined portion. The MR element includes an MR element main body, a lower electrode, and an upper electrode. The lower electrode includes a first end closest to a lower end of the inclined portion and a second end closest to an upper end of the inclined portion. The MR element main body is located at a position closer to the second end than to the first end.
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公开(公告)号：US20230135336A1
公开(公告)日：2023-05-04
申请号：US18091475
申请日：2022-12-30
Applicant: TDK CORPORATION
Inventor： Kenzo MAKINO , Takafumi KOBAYASHI
Abstract: A magnetic sensor includes an MR element and a support member. A top surface of the support member includes an inclined portion. The MR element includes an MR element main body, a lower electrode, and an upper electrode. The lower electrode includes a first end closest to a lower end of the inclined portion and a second end closest to an upper end of the inclined portion. The MR element main body is located at a position closer to the second end than to the first end.
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