Abstract: Disclosed is an magnetic field shielding sheet for an antenna module is applied to an antenna module comprising an antenna unit operating in a predetermined frequency band and a magnet for position alignment, and comprises: a main shielding sheet made of a magnetic material so as to be able to shield a magnetic field generated from the antenna unit; and at least one magnetic saturation-prevention member stacked on one side of the main shielding sheet so as to be able to prevent magnetic saturation of the main shielding sheet by inducing a direct magnetic field generated from the magnet, wherein the magnetic saturation-prevention member is provided in a number corresponding to the number of magnets provided in the antenna module and is positioned on one side of the main shielding sheet so as to be positioned at a position corresponding to the magnets provided in the antenna module.

Abstract: A magnetic field shielding module for an electric vehicle is provided. A magnetic field shielding module for an electric vehicle according to an embodiment of the present invention may comprise: a main shielding layer including a plurality of unit blocks made of a ferrite material to shield a magnetic field generated from a planar coil in which a conductive member is wound multiple times, the main shielding layer being formed in a plate shape having a predetermined area by the plurality of unit blocks arranged adjacent to each other; and an auxiliary shielding layer made of a magnetic material containing a metal component to supplement the main shielding layer, disposed on one surface of the main shielding layer, and including a penetrating portion formed in a shape corresponding to that of the planar coil.

Abstract: A magnetic field shielding sheet including: a plurality of magnetic layers having at least one eddy current reduction pattern part formed thereon; and a heat-dissipating magnetic field shielding unit including heat-dissipating adhesive members arranged between adjacent magnetic layers to improve the heat transfer in the thickness direction of the magnetic field shielding unit. By the magnetic field shielding sheet, the occurrence of eddy currents can be reduced, a high magnetic permeability of 2000 or more can be implemented while having a very thin thickness, and eddy currents that increase by selectively forming an eddy current reduction pattern locally in a region corresponding to the antenna among the entire area and the heat generated by the increase in eddy currents due to the thinner thickness according to the recent trend of being light, thin, short and miniaturized and the resulting decrease in resistance can be quickly discharged to the outside.

Abstract: A magnetic shielding sheet for a wireless power reception module is provided. A magnetic shielding sheet for a wireless power reception module according to an exemplary embodiment of the present invention, which is applied to a wireless power reception module capable of a wireless power share (WPS) function and has an overall thickness of 150 ?m or less. The magnetic shielding sheet includes a first sheet made of a magnetic material to shield a magnetic field, and a second sheet laminated as a monolayer on one surface of the first sheet by means of a bonding adhesive layer, wherein the second sheet is provided to have a smaller thickness than a thickness of the first sheet while having a saturation magnetic flux density twice or more than a saturation magnetic flux density of the first sheet.

Abstract: A magnetic shielding sheet and a manufacturing method therefor are provided. The magnetic shielding sheet according to an embodiment of the present invention, which is placed on one surface of an antenna comprising a hollow part disposed at the center thereof and having a predetermined area and a pattern part surrounding the hollow part, may comprise: a sheet body which is made of a magnetic material so as to be able to shield a magnetic field; and at least one eddy current-reducing pattern part which is formed in the sheet body so as to increase the resistance of the sheet body so that the occurrence of eddy current can be reduced.

Abstract: A magnetic field shielding sheet is provided. The magnetic field shielding sheet according to an embodiment of the present invention is attached to a wireless power transfer antenna and a wireless communication antenna, and comprises: a shielding part made of a magnetic material so as to shield a magnetic field; and at least one eddy current-reducing pattern part which is formed in the shielding part to increase the resistance of the shielding part and thereby reduce the generation of eddy currents. The eddy current-reducing pattern part includes: a first eddy current-reducing pattern part formed to intersect with both the wireless power transfer antenna and the wireless communication antenna; and a second eddy current-reducing pattern part formed to intersect with the wireless communication antenna.

Abstract: A magnetic field shielding sheet according to one embodiment is a magnetic field shielding sheet for an antenna that includes a hollow portion formed in a central region and having a predetermined area and a pattern portion surrounding the hollow portion. The magnetic field shielding sheet includes a sheet body formed as a multi-layer sheet in which a plurality of sheets are stacked in multiple layers with adhesive layers therebetween, wherein the sheet body is a multi-layer sheet in which the plurality of sheets having a relatively lower magnetic permeability while having a relatively higher surface resistance along a stacking direction are sequentially stacked.

Abstract: A magnetic shielding sheet is provided. The magnetic shielding sheet according to an embodiment of the present invention comprises: a plate-shaped magnetic sheet made of a magnetic material containing a metal component; and a cover member for covering the entire surface of the magnetic sheet so as to prevent the surface of the magnetic sheet from being exposed to the outside.

Abstract: A wireless power reception module including an antenna unit which includes a circuit board including a first surface and a second surfaces which are opposite to each other, a wireless power reception antenna formed as an antenna pattern on the first surface of the circuit board, a terminal pattern extending to a predetermined length from the wireless power reception antenna on the first surface, and a first coverlay attached to the first surface and a shielding unit which includes a magnetic sheet formed of a magnetic material to shield a magnetic field and having a side surface exposed to the outside and disposed on one surface of the antenna unit to be positioned at a position corresponding to the wireless power reception antenna, the first coverlay attached to the first surface, covering both the wireless power reception antenna and part of the total length of the terminal pattern.

Abstract: A magnetic shielding sheet for a wireless power reception module is provided. A magnetic shielding sheet for a wireless power reception module according to an exemplary embodiment of the present invention, which is applied to a wireless power reception module capable of a wireless power share (WPS) function and has an overall thickness of 150 ?m or less. The magnetic shielding sheet includes a first sheet made of a magnetic material to shield a magnetic field, and a second sheet laminated as a monolayer on one surface of the first sheet by means of a bonding adhesive layer, wherein the second sheet is provided to have a smaller thickness than a thickness of the first sheet while having a saturation magnetic flux density twice or more than a saturation magnetic flux density of the first sheet.

Abstract: Disclosed is an magnetic field shielding sheet for an antenna module is applied to an antenna module comprising an antenna unit operating in a predetermined frequency band and a magnet for position alignment, and comprises: a main shielding sheet made of a magnetic material so as to be able to shield a magnetic field generated from the antenna unit; and at least one magnetic saturation-prevention member stacked on one side of the main shielding sheet so as to be able to prevent magnetic saturation of the main shielding sheet by inducing a direct magnetic field generated from the magnet, wherein the magnetic saturation-prevention member is provided in a number corresponding to the number of magnets provided in the antenna module and is positioned on one side of the main shielding sheet so as to be positioned at a position corresponding to the magnets provided in the antenna module.

Abstract: Provided are a magnetic field shield sheet for a wireless charger, a method of manufacturing the sheet, and a receiver for the wireless charger by using the sheet. The sheet includes at least one layer thin magnetic sheet made of an amorphous ribbon separated into a plurality of fine pieces; a protective film that is adhered on one surface of the thin magnetic sheet via a first adhesive layer provided on one side of the protective film; and a double-sided tape that is adhered on the other surface of the thin magnetic sheet via a second adhesive layer provided on one side of the double-sided adhesive tape, wherein gaps among the plurality of fine pieces are filled by some parts of the first and second adhesive layers, to thereby isolate the plurality of fine pieces.

Abstract: An antenna module is provided. An antenna module according to an exemplary embodiment of the present invention comprises: a circuit board; a radiation pattern formed on at least one surface of the circuit board and formed in a loop shape to have an empty space part formed at a central part thereof; a first shielding sheet stacked on the upper surface of the circuit board to include an area corresponding to the empty space part; and a second shielding sheet stacked on the lower surface of the circuit board to include an area corresponding to the empty area part, wherein the first shielding sheet and the second shielding sheet are disposed such that the areas corresponding to the empty space part on the opposite surfaces of the circuit board overlap each other.

Abstract: An antenna module is provided. An antenna module according to an exemplary embodiment of the present invention comprises: an antenna unit including an antenna pattern, which has a pattern portion and a lead portion formed, respectively, on both surfaces of a circuit board; a magnetic field shielding sheet including a sheet body made of a magnetic material to block a magnetic field, and a plurality of eddy current reducing pattern portions formed on the sheet body to reduce the generation of eddy current by increasing the resistance of the sheet body; and an insulation member arranged between the antenna unit and the magnetic field shielding sheet, wherein the antenna unit is provided in an asymmetric form in which the pattern portion and the lead portion respectively formed on both surfaces of the circuit board have different thicknesses.

Abstract: Disclosed is a combo antenna module in which an accommodation groove is formed in a coil pattern and a connection pattern connected to a coil pattern disposed on another surface is disposed in the accommodation groove so as to minimize a mounting space and provide antenna performance greater than or equal to that of a conventional antenna module. The disclosed combo antenna module comprises a coil pattern for short-range communication and a coil pattern for wireless power transmission. The coil pattern for wireless power transmission has the accommodation groove formed by varying the line width of the coil pattern disposed on one surface, and the connection pattern for connecting the coil patterns disposed on the other surface is disposed in the accommodation groove so as to minimize a mounting space and provide antenna performance greater than or equal to that of a conventional antenna module.

Abstract: Provided are a large area type complex magnetic field shielding sheet and a wireless power transfer module including the same. A large area type complex magnetic field shielding sheet wherein at least one of an overall width, an overall length, and a diameter is 100 mm or more may include a main shielding layer arranged so that a plurality of ferrite block bodies each having a predetermined area are adjacent to each other, and an auxiliary shielding layer formed of at least one magnetic sheet having a predetermined area and laminated on the main shielding layer through an adhesive layer, wherein a boundary region between two ferrite block bodies disposed to be adjacent each other is disposed to be located in an inner region of the magnetic sheet and thus a magnetic field which leaks into a gap between the two ferrite block bodies is blocked by the magnetic sheet.

Abstract: Proposed is a combo antenna module which laminates a loop coil and an antenna sheet to configure a combo antenna, thereby preventing the degree of design freedom from being lowered and minimizing the manufacturing cost. The proposed combo antenna module includes a magnetic sheet, a loop coil disposed on the upper surface of the magnetic sheet, and an antenna sheet having the area smaller than that of the magnetic sheet, and disposed on the upper surface of the magnetic sheet, in which the antenna sheet overlaps a part of the loop coil.

Abstract: Provided are a roll-shaped magnetic field shielding sheet, a method of manufacturing a magnetic field shielding sheet, and an antenna module using the same, which can improve the efficiency of the overall production process by improving a heat treatment process for a thin film magnetic sheet. The magnetic field shielding sheet includes: at least one thin film magnetic sheet; an insulating layer or insulating layers formed on one or either side of the at least one thin film magnetic sheet; and an adhesive layer formed between the insulating layers of the adjacent thin film magnetic sheets to laminate and bond the thin film magnetic sheets, wherein the thin film magnetic sheet is flake-treated to be divided into a plurality of magnetic substance fragments.

Abstract: Provided is a magnetic field shielding sheet. A magnetic field shielding sheet according to an exemplary embodiment of the present invention is a magnetic field shielding sheet for an antenna, which includes a hollow portion having a predetermined area in a central portion thereof and a pattern portion configured to surround the hollow portion, includes a sheet body formed as a ribbon sheet including at least one selected from an amorphous alloy and a nanocrystalline alloy, a plurality of through-portions formed in a region of the sheet body corresponding to the pattern portion, and a plurality of cracks formed to extend from the through-portions.

Abstract: A magnetic field shielding sheet according to one embodiment is a magnetic field shielding sheet for an antenna that includes a hollow portion formed in a central region and having a predetermined area and a pattern portion surrounding the hollow portion. The magnetic field shielding sheet includes a sheet body formed as a multi-layer sheet in which a plurality of sheets are stacked in multiple layers with adhesive layers therebetween, wherein the sheet body is a multi-layer sheet in which the plurality of sheets having a relatively lower magnetic permeability while having a relatively higher surface resistance along a stacking direction are sequentially stacked.