Magnetic field shielding sheet, method of manufacturing the same and portable terminal device using the same
First Claim
Patent Images
1. A magnetic field shielding sheet comprising:
- an amorphous ribbon which is formed into a plurality of pieces;
a cover layer which is bonded on one surface of the amorphous ribbon;
a double-sided tape which is adhered on the other surface of the amorphous ribbon; and
an adhesive film which is filled in gaps between the plurality of pieces, to prevent water from penetrating into the gaps.
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Abstract
Provided is a magnetic field shielding sheet including: an amorphous ribbon which is formed into a plurality of pieces; a cover layer which is bonded on one surface of the amorphous ribbon; a double-sided tape which is adhered on the other surface of the amorphous ribbon; and an adhesive film which is filled in gaps between the plurality of pieces, to prevent water from penetrating into the gaps. Accordingly, the amorphous ribbon is prevented from being oxidized with no result of causing an appearance problem and lowering shielding performance, due to oxidizing of the amorphous ribbon.
13 Citations
16 Claims
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1. A magnetic field shielding sheet comprising:
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an amorphous ribbon which is formed into a plurality of pieces; a cover layer which is bonded on one surface of the amorphous ribbon; a double-sided tape which is adhered on the other surface of the amorphous ribbon; and an adhesive film which is filled in gaps between the plurality of pieces, to prevent water from penetrating into the gaps. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of manufacturing a magnetic field shielding sheet, the method comprising the steps of:
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heat-treating an amorphous ribbon; forming a cover layer on one surface of the amorphous ribbon; forming a double-sided tape on the other surface of the amorphous ribbon; flake-processing the amorphous ribbon on both surfaces of which the cover layer and the double-sided tape are respectively formed to thus be formed into a plurality of flake pieces; and forming an adhesive film for preventing water from penetrating in the gaps between the plurality of flake pieces. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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16. A magnetic field shielding sheet comprising:
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a plurality of amorphous ribbons between which a plurality of first double-sided tapes are inserted and laminated; a cover layer which is bonded on one exposed surface of the amorphous ribbons; and a second double-sided tape which is adhered on the other exposed surface of the amorphous ribbons, wherein each of the amorphous ribbons is made of a plurality of pieces having a gap therebetween, and some of the adhesive included in the cover layer, and the first and second double-sided tapes are penetrated into the gaps to prevent water from being penetrated into the gaps.
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Specification