Coil unit and electronic instrument
First Claim
Patent Images
1. A coil unit comprising:
- a planar coil that has a transmission side and a non-transmission side;
a magnetic sheet provided over the non-transmission side of the planar coil; and
a heat sink/magnetic shield plate stacked on a side of the magnetic sheet opposite to a side that faces the planar coil, thus forming a stack direction, the heat sink/magnetic shield plate dissipating heat generated by the planar coil and shielding magnetism by absorbing a magnetic flux that has not been absorbed by the magnetic sheet,the heat sink/magnetic shield plate being formed of a non-magnetic material, andthe heat sink/magnetic shield plate having a thickness larger than that of the magnetic sheet in the stack direction.
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Accused Products
Abstract
A coil unit includes a planar coil that has a transmission side and a non-transmission side, a magnetic sheet provided over the non-transmission side of the planar coil, and a heat sink/magnetic shield plate stacked on a side of the magnetic sheet opposite to a side that faces the planar coil, the heat sink/magnetic shield plate dissipating heat generated by the planar coil and shielding magnetism by absorbing a magnetic flux that has not been absorbed by the magnetic sheet. The heat sink/magnetic shield plate has a thickness larger than that of the magnetic sheet.
36 Citations
14 Claims
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1. A coil unit comprising:
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a planar coil that has a transmission side and a non-transmission side; a magnetic sheet provided over the non-transmission side of the planar coil; and a heat sink/magnetic shield plate stacked on a side of the magnetic sheet opposite to a side that faces the planar coil, thus forming a stack direction, the heat sink/magnetic shield plate dissipating heat generated by the planar coil and shielding magnetism by absorbing a magnetic flux that has not been absorbed by the magnetic sheet, the heat sink/magnetic shield plate being formed of a non-magnetic material, and the heat sink/magnetic shield plate having a thickness larger than that of the magnetic sheet in the stack direction. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A coil unit comprising:
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a planar coil; a magnetic sheet; and a heat sink/magnetic shield plate that has a thickness larger than that of the magnetic sheet in a stack direction, the magnetic sheet being provided between the planar coil and the heat sink/magnetic shield plate in the stack direction, and the heat sink/magnetic shield plate dissipating heat generated by the planar coil and shielding magnetism by absorbing a magnetic flux that has not been absorbed by the magnetic sheet.
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Specification