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1.发明授权公开(公告)号：US09891293B2
公开(公告)日：2018-02-13
申请号：US15343874
申请日：2016-11-04
申请人： HITACHI METALS, LTD.
CPC分类号： G01R33/05 , G01R15/205 , G01R33/09 , G01R33/093 , H01L43/08
摘要： A magnetic sensor device that includes an annular magnetic body, a coil wound around the magnetic body, the coil configured to apply a magnetic field that rotates 360 degrees by a half way point in a peripheral direction of the magnetic body, and a magnetoresistance effect element arranged at a center of the annular magnetic body and including a fixed layer having a magnetization direction fixed in a direction of the magnetic field to be measured. The magnetic body includes a tapered portion located at a position where a line passing through the center of the magnetic body and extending in a shorter-axis direction intersects the magnetic body, the tapered portion having a narrowed portion narrowed down toward the magnetoresistance effect element, and having dumbbell-shaped inner and outer peripheries, and the narrowed portion having a width reduced toward the magnetoresistance effect element.
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公开(公告)号：US20150048819A1
公开(公告)日：2015-02-19
申请号：US14387482
申请日：2013-03-13
申请人： HITACHI METALS, LTD.
IPC分类号： G01R33/09
CPC分类号： G01R33/05 , G01R15/205 , G01R33/09 , G01R33/093 , H01L43/08
摘要： A magnetic sensor device includes a thin film first magnetic body provided with a magnetic path convergence/divergence section arranged on a predetermined axis, and at least a pair of wing-shaped sections extending from the magnetic path convergence/divergence section toward the opposite sides of said axis, a thin film second magnetic body provided with a magnetic path convergence/divergence section arranged on the predetermined axis to be spaced from the magnetic path convergence/divergence section of the first magnetic body, at least a pair of wing-shaped sections extending from this magnetic path convergence divergence toward the opposite sides of the axis, a first coil wound around the first magnetic body, a second coil wound around the second magnetic body, and a magnetoresistance effect element arranged between the magnetic path convergence/divergence section of the first magnetic body and the of the second magnetic body.
摘要翻译： 磁传感器装置包括设置有设置在预定轴上的磁路会聚/发散部分的薄膜第一磁体和至少一对从磁路会聚/发散部分朝向相对侧延伸的翼形部分 所述轴线，设置有与所述第一磁性体的磁路会聚/发散部分间隔开的预定轴线上的磁路会聚/发散部分的薄膜第二磁性体，至少一对延伸 从该磁路收敛发散朝向轴的相对侧，缠绕在第一磁体上的第一线圈，缠绕在第二磁体上的第二线圈，以及布置在第二磁体的磁路收敛/发散部之间的磁阻效应元件 第一磁体和第二磁体。
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公开(公告)号：US09678177B2
公开(公告)日：2017-06-13
申请号：US14387482
申请日：2013-03-13
申请人： HITACHI METALS, LTD.
CPC分类号： G01R33/05 , G01R15/205 , G01R33/09 , G01R33/093 , H01L43/08
摘要： A magnetic sensor device comprises a thin film first magnetic body provided with a magnetic path convergence/divergence section arranged on a predetermined axis, and at least a pair of wing-shaped sections extending from the magnetic path convergence/divergence section toward the opposite sides of the axis, a thin film second magnetic body provided with a magnetic path convergence/divergence section arranged on the predetermined axis to be spaced from the magnetic path convergence/divergence section of the first magnetic body, at least a pair of wing-shaped sections extending from this magnetic path convergence divergence toward the opposite sides of the axis, a first coil wound around the first magnetic body, a second coil wound around the second magnetic body, and a magnetoresistance effect element arranged between the magnetic path convergence/divergence section of the first magnetic body and the of the second magnetic body, wherein the first coil applies a magnetic field to a magnetic path of the first magnetic body, the magnetic path converging/diverging from/to the at least a pair of wing-shaped sections of the first magnetic body to/from the magnetic path convergence/divergence section the second coil applies a magnetic field to a magnetic path of the second magnetic body, the magnetic path diverging/converging from/to the magnetic path convergence/divergence section to/from the at least a pair of wing-shaped sections of the first magnetic body, and a magnetic field is applied to the magnetoresistance effect element along the converged magnetic path.
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