MAGNETIC FIELD SHIELDING SHEET AND WIRELESS POWER TRANSMITTING MODULE INCLUDING SAME
First Claim
1. A magnetic field shielding sheet, which is applied to a combo-type antenna unit including at least two antennas using magnetic fields of different frequency bands, the magnetic field shielding sheet comprising:
- a first sheet layer configured to shield a magnetic field of a first frequency band and concentrate the magnetic field in a designated direction and including a metal component;
a second sheet layer configured to shield a magnetic field of a second frequency band and concentrate the magnetic field in a designated direction; and
a micro-piece separation and oxidation preventing member provided on a side surface of the first sheet layer to prevent separation of a micro-piece from the side surface of the first sheet layer or prevent oxidation of the side surface.
1 Assignment
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Accused Products
Abstract
A magnetic field shielding sheet and a wireless power transfer module that includes the same are provided. The magnetic field shielding sheet, according to an exemplary embodiment of the present invention, which is applied to a combo-type antenna unit that includes at least two antennas using different frequency bands of magnetic fields, comprises: a first sheet layer that includes a metal component that shields a first frequency band of a magnetic field and concentrates the magnetic field in a designated direction; a second sheet layer that shields a second frequency band of a magnetic field and concentrates the magnetic field in a designated direction; and a micro-piece separation and oxidation preventing member provided on a side surface of the first sheet layer in order to prevent a micro-piece from being separated from the side surface of the first sheet or to prevent the side surface from being oxidized. According to the present invention, by virtue of the micro-piece separation and oxidation preventing member provided on the side surface of the first sheet layer, it is possible to prevent the side surface from being oxidized and to prevent short-circuiting due to particles.
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Citations
25 Claims
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1. A magnetic field shielding sheet, which is applied to a combo-type antenna unit including at least two antennas using magnetic fields of different frequency bands, the magnetic field shielding sheet comprising:
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a first sheet layer configured to shield a magnetic field of a first frequency band and concentrate the magnetic field in a designated direction and including a metal component; a second sheet layer configured to shield a magnetic field of a second frequency band and concentrate the magnetic field in a designated direction; and a micro-piece separation and oxidation preventing member provided on a side surface of the first sheet layer to prevent separation of a micro-piece from the side surface of the first sheet layer or prevent oxidation of the side surface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 10, 12, 13, 14, 15, 16, 20, 21, 22, 23, 24, 25)
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9. (canceled)
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11. (canceled)
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17-19. -19. (canceled)
Specification