Patent ID: 11946989
Assignee: TDK CORPORATION
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A magnetic sensor device comprising:
at least one magnetic sensor configured to detect a target magnetic field that is a magnetic field to be detected, the at least one magnetic sensor including a plurality of magnetoresistive elements and an element layout area for laying out the plurality of magnetoresistive elements; and
a support that supports the at least one magnetic sensor and has a reference plane, wherein:
when the magnetic sensor device is seen in a first reference direction, a center of gravity of the element layout area is deviated from a center of gravity of the reference plane, the first reference direction being a direction perpendicular to the reference plane;
a deviation of the center of gravity of the element layout area from the center of gravity of the reference plane in a second reference direction is greater than a deviation of the center of gravity of the element layout area from the center of gravity of the reference plane in a third reference direction, the second reference direction and the third reference direction being two directions orthogonal to the first reference direction;
the at least one magnetic sensor further includes
a first resistor section and a second resistor section connected in series in a first path that is a path electrically connecting a first connection point and a second connection point, and
a third resistor section and a fourth resistor section connected in series in a second path that is a path electrically connecting the first connection point and the second connection point;

the first and fourth resistor sections are connected to the first connection point;
the second and third resistor sections are connected to the second connection point;
the plurality of magnetoresistive elements constitute the first to fourth resistor sections;
the element layout area includes
a first area for laying out at least one magnetoresistive element constituting the first resistor section among the plurality of magnetoresistive elements,
a second area for laying out at least one magnetoresistive element constituting the second resistor section among the plurality of magnetoresistive elements,
a third area for laying out at least one magnetoresistive element constituting the third resistor section among the plurality of magnetoresistive elements, and
a fourth area for laying out at least one magnetoresistive element constituting the fourth resistor section among the plurality of magnetoresistive elements; and

at least two of the first to fourth areas are arranged along the third reference direction so that at least parts of the respective at least two areas sandwich a reference axis therebetween when the areas are seen in the first reference direction, the reference axis being a straight line parallel to the second reference direction and passing through the center of gravity of the reference plane.