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US 9,201,123 B2Granted
Magnetic sensor device and a method for fabricating the same
AssigneeInfineon Technologies AG
InventorsKlaus Elian, Thomas Mueller
Life of this patent
Estimating the term…
Abstract
A magnetic sensor device includes a plurality of electrical wires, a magnetic sensor chip, and a magnet. The magnet is formed from a material composition of a polymer and magnetic particles and attached to at least one of the electrical wires.
Claims15
A magnetic sensor device comprising:
- a magnetic sensor chip;
- a plurality of electrical wires;
- and
- a permanent magnet configured to generate a bias magnetic field, the permanent magnet being arranged so that at least one of the electrical wires of the plurality of electrical wires extends through opposing parallel side faces of the permanent magnet.
1 more element
A magnetic sensor device comprising:
- a leadframe comprising leadfingers;
- a magnetic sensor chip attached to at least one of the leadfingers;
- a magnet comprising a first material composition of a polymer and magnetic particles, the first material composition being attached to at least one of the leadfingers;
- and
- an encapsulant comprising a second material composition different from the first material composition, the encapsulant encapsulating the magnetic sensor chip.
2 more elements
A method for fabricating a magnetic sensor device, the method comprising:
- providing a plurality of electrical wires;
- providing a magnetic sensor chip;
- and
- attaching a magnet to at least one of the electrical wires, the magnet comprising a material composition of a polymer and magnetic particles, wherein the at least one of the electrical wires extends through opposing parallel sides faces of the magnet.
1 more element
A method for fabricating a magnetic sensor device, the method comprising:
- providing a leadframe comprising a plurality of leadfingers;
- providing a magnetic sensor chip;
- and
- molding a material composition of a polymer and magnetic or magnetizable particles on or around at least one of the leadfingers, wherein the material composition molded on or around at least one of the leadfingers does not cover the magnetic sensor chip.
1 more element
Dependencies are inferred from the claim text.