公开(公告)号：US20210288557A1

公开(公告)日：2021-09-16

申请号：US17116581

申请日：2020-12-09

Applicant: TDK CORPORATION

Inventor： Yosuke KOMASAKI ,  Naoki OHTA

IPC: H02K11/215 ,  H02K7/116 ,  B62D5/04 ,  G01D5/16 ,  G01B7/30

Abstract: A rotation detection apparatus includes a magnetic field generation source, a spin valve element, and a calculator. The magnetic field generation source is rotatable while generating a magnetic field, and has a temperature coefficient of residual magnetic flux density having an absolute value of 0.1%/° C. or less. The spin valve element includes a magnetic layer configured to generate a movement of a magnetic domain wall in accordance with a change in direction of the magnetic field associated with a rotation of the magnetic field generation source. The calculator is configured to detect a change in resistance of the spin valve element caused by the movement of the magnetic domain wall and to calculate the number of rotations or a rotation angle of the magnetic field generation source.

公开(公告)号：US20160238674A1

公开(公告)日：2016-08-18

申请号：US14955757

申请日：2015-12-01

Applicant: TDK CORPORATION

Inventor： Yosuke KOMASAKI

IPC: G01R33/09

CPC classification number: G01R33/093

Abstract: A magnetic sensor includes an MR element and a bias magnetic field generation unit. The MR element includes a magnetization pinned layer, a nonmagnetic layer and a free layer stacked along Z direction. The bias magnetic field generation unit includes a first antiferromagnetic layer, a ferromagnetic layer and a second antiferromagnetic layer stacked along the Z direction. The bias magnetic field generation unit has a first end face and and a second end face located at opposite ends in the Z direction. The MR element is placed such that the entirety of the MR element is contained in a space formed by shifting an imaginary plane equivalent to the first end face of the bias magnetic field generation unit away from the second end face along the Z direction.

Abstract translation: 磁传感器包括MR元件和偏置磁场产生单元。 MR元件包括磁化钉扎层，非磁性层和沿Z方向堆叠的自由层。 偏置磁场产生单元包括沿Z方向堆叠的第一反铁磁层，铁磁层和第二反铁磁层。 偏置磁场产生单元具有位于Z方向上相对端的第一端面和第二端面。 MR元件放置成使得MR元件的整体包含在通过使与偏置磁场产生单元的第一端面相当的虚拟平面沿Z方向远离第二端面而形成的空间中。

公开(公告)号：US20210020552A1

公开(公告)日：2021-01-21

申请号：US16912952

申请日：2020-06-26

Applicant: TDK CORPORATION

Inventor： Yosuke KOMASAKI ,  Hiroshi NAGANUMA ,  Naoki OHTA

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

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：US20160282144A1

公开(公告)日：2016-09-29

申请号：US14978660

申请日：2015-12-22

Applicant: TDK CORPORATION

Inventor： Yosuke KOMASAKI

IPC: G01D5/16 ,  G01R33/09 ,  G01R33/038 ,  H01F7/02

CPC classification number: G01R33/038 ,  G01R33/09 ,  G01R33/093 ,  H01F7/0273

Abstract: A magnetic sensor includes an MR element and two bias magnetic field generation units. The two bias magnetic field generation units are spaced apart from each other along a first direction and configured to cooperate with each other to generate a bias magnetic field. Each bias magnetic field generation unit includes a ferromagnetic layer and an antiferromagnetic layer stacked along a second direction orthogonal to the first direction. An element placement region is formed between the two bias magnetic field generation units when viewed in the second direction in an imaginary plane perpendicular to the second direction and intersecting the MR element. The element placement region includes a middle region and two end regions. The MR element is placed to lie within the middle region in the imaginary plane.

Abstract translation: 磁传感器包括MR元件和两个偏置磁场产生单元。 两个偏置磁场产生单元沿着第一方向彼此间隔开并且被配置为彼此配合以产生偏置磁场。 每个偏置磁场产生单元包括沿着与第一方向正交的第二方向堆叠的铁磁层和反铁磁层。 当在与第二方向垂直的虚拟平面中沿第二方向观察并且与MR元件相交时，在两个偏置磁场产生单元之间形成元件放置区域。 元件放置区域包括中间区域和两个端部区域。 MR元件放置在虚拟平面中的中间区域内。

公开(公告)号：US20230326839A1

公开(公告)日：2023-10-12

申请号：US18210291

申请日：2023-06-15

Applicant: TDK CORPORATION

Inventor： Yosuke KOMASAKI ,  Hiroshi NAGANUMA ,  Naoki OHTA

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

CPC classification number: H01L23/49575 ,  H01L23/49503 ,  H01L23/49562 ,  H01L25/03 ,  H01L24/48 ,  H01L2224/05554 ,  H01L2224/48091 ,  H01L2224/48137 ,  H01L2224/48247

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：US20220128637A1

公开(公告)日：2022-04-28

申请号：US17498165

申请日：2021-10-11

Applicant: TDK Corporation

Inventor： Naoki OHTA ,  Hiroshi YAMAZAKI ,  Satoshi MIURA ,  Kenkichi ANAGAWA ,  Yosuke KOMASAKI

IPC: G01R33/09 ,  H01L43/12

Abstract: A magnetic sensor comprising a resin layer having a first surface and a second surface, which is opposite to the first surface and a magnetoresistive effect unit that detects a magnetic field in a predetermined direction, wherein the magnetoresistive effect unit includes at least a first magnetoresistive effect unit that detects a magnetic field in a first direction, the first direction is a direction orthogonal to the first surface of the resin layer, an inclined surface that is inclined at a predetermined angle with respect to the first surface is formed in the first surface of the resin layer, and the first magnetoresistive effect unit is formed in the inclined surface.

公开(公告)号：US20190198213A1

公开(公告)日：2019-06-27

申请号：US16288473

申请日：2019-02-28

Applicant: TDK CORPORATION

Inventor： Yosuke KOMASAKI

IPC: H01F7/02 ,  G01R33/09

CPC classification number: H01F7/0294 ,  G01R33/09

Abstract: A magnetic sensor includes a plurality of magnetic detection elements, and a plurality of magnetic field generators associated with the plurality of magnetic detection elements. Each of the plurality of magnetic field generators includes a first ferromagnetic material section and a first antiferromagnetic material section. The first antiferromagnetic material section is in contact with and exchange-coupled to the first ferromagnetic material section. The first ferromagnetic material section has an overall magnetization. The plurality of magnetic field generators includes first and second magnetic field generators configured so that the overall magnetization of the first ferromagnetic material section of the first magnetic field generator is in a different direction from the overall magnetization of the first ferromagnetic material section of the second magnetic field generator.

公开(公告)号：US20180180685A1

公开(公告)日：2018-06-28

申请号：US15887147

申请日：2018-02-02

Applicant: TDK CORPORATION

Inventor： Yosuke KOMASAKI

IPC: G01R33/038 ,  H01F7/02 ,  G01R33/09

CPC classification number: G01R33/038 ,  G01R33/09 ,  G01R33/093 ,  H01F7/0273

Abstract: A magnetic sensor includes an MR element and two stacks. The two stacks are spaced apart from each other along a first direction. Each stack includes a ferromagnetic layer and an antiferromagnetic layer stacked along a second direction orthogonal to the first direction. An element placement region is formed between the two stacks when viewed in the second direction. The element placement region includes a middle region and two end regions. The MR element is placed to lie within the middle region.

公开(公告)号：US20160370438A1

公开(公告)日：2016-12-22

申请号：US15185787

申请日：2016-06-17

Applicant: TDK CORPORATION

Inventor： Yosuke KOMASAKI

IPC: G01R33/06 ,  H01F7/02

CPC classification number: H01F7/0294 ,  G01R33/09

Abstract: A magnetic field generator includes a plurality of magnetic field generation units arranged in a predetermined pattern to generate a plurality of external magnetic fields. Each of the plurality of magnetic field generation units includes a first ferromagnetic material section and a first antiferromagnetic material section. The first antiferromagnetic material section is in contact with and exchange-coupled to the first ferromagnetic material section. The first ferromagnetic material section has its overall magnetization. The plurality of magnetic field generation units include two magnetic field generation units configured so that the overall magnetizations of their respective first ferromagnetic material sections are in different directions from each other.

Abstract translation: 磁场发生器包括以预定图案布置以产生多个外部磁场的多个磁场产生单元。 多个磁场产生单元中的每一个包括第一铁磁材料部分和第一反铁磁材料部分。 第一反铁磁材料部分与第一铁磁材料部分接触并交换耦合。 第一铁磁材料部分具有其总磁化强度。 多个磁场产生单元包括两个磁场产生单元，其被配置为使得它们各自的第一铁磁材料部分的整体磁化彼此处于不同的方向。