Magnetic sensor including a plurality of magnetorsistive elements each having long shape in one direction
AssigneeTDK Corporation
InventorsTetsuya Hiraki, Kazuya Watanabe
Life of this patent
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Abstract
A magnetic sensor 1 includes a plurality of MR elements disposed in first to fourth areas. Each of the first to fourth areas includes a first end edge and a second end edge located at both ends in a first reference direction, and a third end edge and a fourth end edge located at both ends in a second reference direction. Each of the first and second end edges extends along the second reference direction. Each of the third and fourth end edges extends along a third reference direction. Each of the plurality of MR elements has a shape long in a direction different from each of the first reference direction, the second reference direction, and the third reference direction.
Claims17
A magnetic sensor comprising:
- a plurality of magnetoresistive elements;
- and
- a chip including the plurality of magnetoresistive elements;
- and
- a detection circuit including a first port, a second port, a third port, a first resistor section, and a second resistor section, wherein:
- the chip has a top surface and a bottom surface that are positioned opposite to each other, and a first side surface, a second side surface, a third side surface, and a fourth side surface that connect the top surface and the bottom surface;
- the first side surface and the second side surface are located at both ends of the chip in a first reference direction;
- the third side surface and the fourth side surface are located at both ends of the chip in a second reference direction orthogonal to the first reference direction;
- the first resistor section is provided between the first port and the second port in the detection circuit;
- the second resistor section is provided between the second port and the third port in the detection circuit;
- the plurality of magnetoresistive elements include a plurality of first magnetoresistive elements constituting the first resistor section and a plurality of second magnetoresistive elements constituting the second resistor section;
- the chip includes a first quadrangular area in which a whole of the plurality of first magnetoresistive elements are disposed, and a second quadrangular area in which a whole of the plurality of second magnetoresistive elements are disposed;
- and
- when a center of gravity of the first quadrangular area when viewed in a direction perpendicular to the top surface of the chip is referred to a first area center of gravity, and a center of gravity of the second quadrangular area when viewed in the direction perpendicular to the top surface of the chip is referred to a second area center of gravity, the first area center of gravity and the second area center of gravity are arranged along a third reference direction intersecting with each of the first reference direction and the second reference direction.
Dependencies are inferred from the claim text.