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US 10,761,150 B2Granted
Magnetic field detection device
AssigneeTDK Corporation
InventorsMasaki Nagata, Kazuya Watanabe, Keisuke Uchida, Kohei Honma, Hiraku Hirabayashi
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Abstract
Provided is a magnetic field detection device that includes a first and second soft magnetic bodies, and a magnetic detector. The first and second soft magnetic bodies extend along a first plane and are disposed in confronted relation in a third direction. The first plane includes both a first direction and a second direction orthogonal to the first direction. The third direction is orthogonal to both the first and second directions. The magnetic detector is provided between the first and second soft magnetic bodies in the third direction.
Claims9
A magnetic field detection device, comprising:
- a first soft magnetic body and a second soft magnetic body that extend along a first plane and are disposed in confronted relation in a third direction with a non-magnetic layer in between, the first plane including both a first direction and a second direction orthogonal to the first direction, and the third direction orthogonal to both the first direction and the second direction;
- a magnetic detector provided between the first soft magnetic body and the second soft magnetic body in the third direction and separated from both of the first soft magnetic body and the second soft magnetic body:
- and
- a pair of leads sandwiching the magnetic detector in the third direction and configured to supply sense current to the magnetic detector in the third direction,
- wherein the first soft magnetic body includes a first confronted surface that is confronted with the second soft magnetic body,
- the second soft magnetic body includes a second confronted surface that is confronted with the first soft magnetic body,
- the first confronted surface, the second confronted surface, or both include a plurality of protrusions, or both the first confronted surface and the second confronted surface include one or more protrusions,
- the magnetic detector includes a direction of magnetic sensing along the first plane, and
- the magnetic detector and the pair of leads are provided in an area between two adjacent protrusions along the first plane without overlapping any of the plurality of protrusions in the third direction.
6 more elements
A magnetic field detection device, comprising:
- a first soft magnetic body and a second soft magnetic body that extend along a first plane and are disposed in confronted relation in a third direction with a non-magnetic layer in between, the first plane including both a first direction and a second direction orthogonal to the first direction, and the third direction orthogonal to both the first direction and the second direction;
- a magnetic detector provided between the first soft magnetic body and the second soft magnetic body in the third direction and separated from both of the first soft magnetic body and the second soft magnetic body;
- and
- a pair of leads sandwiching the magnetic detector in the third direction and configured to supply sense current to the magnetic detector in the third direction,
- wherein the first soft magnetic body includes a first confronted surface that is confronted with the second soft magnetic body,
- the second soft magnetic body includes a second confronted surface that is confronted with the first soft magnetic body,
- the first confronted surface, the second confronted surface, or both include a plurality of protrusions, or both the first confronted surface and the second confronted surface include one or more protrusions,
- the magnetic detector includes a direction of magnetic sensing along the first plane,
- a center position of the magnetic detector in a direction along the first plane is a different position from a position overlapping with a protrusion in the third direction, and
- the pair of leads are provided in an area between two adjacent yokes along the first plane without overlapping any of the plurality of yokes in the third direction.
7 more elements
Dependencies are inferred from the claim text.