MAGNETIC MEMORY DEVICE
First Claim
Patent Images
1. A magnetic memory device comprising:
- a magnetic memory chip having a magnetoresistive element;
a magnetic layer having first and second portions spacing out each other, the first portion covering a first main surface of the magnetic memory chip, the second portion covering a second main surface facing the first main surface of the magnetic memory chip;
a circuit board on which the magnetic layer is mounted; and
a bonding wire connecting between the magnetic memory chip and the circuit board in a first direction parallel to the first and second main surfaces,wherein the first portion is nearer the circuit board than the second portion,each of the first and second portions has a size larger than a size of the magnetic memory chip in the first direction, andone of the first and second portions covers side surfaces of the magnetic memory chip in a second direction parallel to the first and second main surfaces and orthogonal to the first direction.
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Abstract
According to one embodiment, a magnetic memory device includes a magnetic memory chip having a magnetoresistive element, a magnetic layer having first and second portions spacing out each other, the first portion covering a first main surface of the magnetic memory chip, the second portion covering a second main surface facing the first main surface of the magnetic memory chip, a circuit board on which the magnetic layer is mounted, and a bonding wire connecting between the magnetic memory chip and the circuit board in a first direction parallel to the first and second main surfaces.
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Citations
20 Claims
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1. A magnetic memory device comprising:
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a magnetic memory chip having a magnetoresistive element; a magnetic layer having first and second portions spacing out each other, the first portion covering a first main surface of the magnetic memory chip, the second portion covering a second main surface facing the first main surface of the magnetic memory chip; a circuit board on which the magnetic layer is mounted; and a bonding wire connecting between the magnetic memory chip and the circuit board in a first direction parallel to the first and second main surfaces, wherein the first portion is nearer the circuit board than the second portion, each of the first and second portions has a size larger than a size of the magnetic memory chip in the first direction, and one of the first and second portions covers side surfaces of the magnetic memory chip in a second direction parallel to the first and second main surfaces and orthogonal to the first direction. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A magnetic memory device comprising:
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a magnetic memory chip having a magnetoresistive element; a magnetic layer having first and second portions spacing out each other, the first portion covering a first main surface of the magnetic, memory chip, the second portion covering a second main surface facing the first main surface of the magnetic memory chip; a circuit board on which the magnetic layer is mounted; and a bonding wire connecting between the magnetic memory chip and the circuit board in a first direction parallel to the first and second main surfaces, wherein the second portion is nearer the circuit board than the first portion, the first portion has a size larger than a size of the magnetic memory chip in the first direction, and the second portion has a size smaller than a size of the magnetic memory chip in the first direction.
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20. A magnetic memory device comprising:
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a magnetic memory chip having a magnetoresistive element; a magnetic layer having first and second portions spacing out each other, the first portion covering a first main surface of the magnetic memory chip, the second portion covering a second main surface facing the first main surface of the magnetic memory chip; a circuit board on -which the magnetic layer is mounted; a bonding wire connecting between the magnetic memory chip and the circuit board in a first direction parallel to the first and second main surfaces; and a permanent magnet being adjacent to one of the first and second main surfaces of the magnetic memory chip, wherein each of the first and second portions has a size larger than a size of the magnetic memory chip in the first direction.
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Specification