Magnetic field shielding sheet and wireless power charging apparatus including the same
AssigneeSamsung Electro-Mechanics Co., Ltd.
InventorsYeong Hwan Song, Hyun Jung Lee, Jae Hyuk Jang
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Abstract
A magnetic field shielding sheet and a wireless power charging apparatus including the same are provided. A magnetic field shielding sheet includes a magnetic field shielding area including magnetic field shielding layers disposed on a surface of a coil part configured to provide a wireless power charging function to shield a magnetic field generated from the coil part and an adhesive layer bonding the magnetic field shielding layers to each other, and heat radiation fillers disposed within the adhesive layer.
Claims16
A magnetic field shielding sheet, comprising:
- a magnetic field shielding area comprising magnetic field shielding layers, disposed on a surface of a coil part configured to provide a wireless power, to shield a magnetic field generated from the coil part and an adhesive layer bonding the magnetic field shielding layers to each other;
- and
- heat radiation fillers disposed within the adhesive layer, wherein a volume ratio of the heat radiation fillers within a first portion of the adhesive layer is different from a volume ratio of the heat radiation fillers within a second portion of the adhesive layer farther away from the coil part.
A wireless power charging apparatus, comprising:
- a coil part comprising a first surface on which a conductive pattern is disposed and a second surface opposing the first surface;
- a power circuit configured to charge a secondary cell battery by using power induced into the coil part;
- a magnetic field shielding area comprising magnetic field shielding layers, disposed on the second surface, to absorb a magnetic field generated from the conductive pattern and an adhesive layer bonding the magnetic field shielding layers to each other;
- and
- heat radiation fillers disposed within the adhesive layer, wherein a volume ratio of the heat radiation fillers within a first portion of the adhesive layer is different from a volume ratio of the heat radiation fillers within a second portion of the adhesive layer farther away from the coil part.
Dependencies are inferred from the claim text.