Composite sheet for shielding magnetic field and electromagnetic wave, and antenna module comprising same
First Claim
1. A composite sheet for shielding a magnetic field and an electromagnetic wave, the composite sheet comprising:
- a magnetic sheet for shielding a magnetic field; and
a conductor sheet for shielding an electromagnetic wave and radiating heat,wherein the magnetic sheet comprises;
a ribbon sheet which is formed of an amorphous alloy or a nanocrystallized alloy and is separated into a plurality of pieces having gaps between the pieces;
a protective film bonded to one side surface of the ribbon sheet; and
an adhesive tape bonded to the other side surface of the ribbon sheet,wherein the conductor sheet is stacked on either the protective film or the adhesive tape, andwherein the protective film includes a first adhesive, the adhesive tape includes a second adhesive, and a portion of the first adhesive and a portion of the second adhesive are filled in the gaps.
3 Assignments
0 Petitions
Accused Products
Abstract
Provided are a composite sheet for shielding a magnetic field and an electromagnetic wave, and an antenna module using the same, which can block influence of a magnetic field on a main body and a battery of a mobile terminal block device, and the like, and simultaneously shield an electromagnetic wave, by significantly reducing a loss due to an eddy current by flaking an amorphous ribbon sheet. The composite sheet includes: a magnetic sheet; and a conductor sheet stacked on the magnetic sheet for shielding an electromagnetic wave and radiating heat. The magnetic sheet includes: an amorphous ribbon sheet which is thermally treated, flaked, and then separated into a plurality of fine pieces; a protective film bonded to one side surface of the amorphous ribbon sheet; and an adhesive tape bonded to the other side surface of the amorphous ribbon sheet.
30 Citations
15 Claims
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1. A composite sheet for shielding a magnetic field and an electromagnetic wave, the composite sheet comprising:
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a magnetic sheet for shielding a magnetic field; and
a conductor sheet for shielding an electromagnetic wave and radiating heat,wherein the magnetic sheet comprises;
a ribbon sheet which is formed of an amorphous alloy or a nanocrystallized alloy and is separated into a plurality of pieces having gaps between the pieces;
a protective film bonded to one side surface of the ribbon sheet; and
an adhesive tape bonded to the other side surface of the ribbon sheet,wherein the conductor sheet is stacked on either the protective film or the adhesive tape, and wherein the protective film includes a first adhesive, the adhesive tape includes a second adhesive, and a portion of the first adhesive and a portion of the second adhesive are filled in the gaps. - View Dependent Claims (2, 3, 4, 11, 12, 13, 14, 15)
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5. A composite sheet for shielding a magnetic field and an electromagnetic wave, the composite sheet comprising:
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a first magnetic sheet having a first permeability and formed of an amorphous alloy or a nanocrystallined alloy; and a second magnetic sheet having a second permeability lower than the first permeability, wherein the first magnetic sheet is divided into a number of pieces having gaps between the pieces, a protective film is laminated on one side surface of the first magnetic sheet, and a double-sided tape is laminated on the other side surface of the first magnetic sheet, and wherein the protective film includes a first adhesive, the double-sided tape includes a second adhesive, and a portion of the first adhesive and a portion of the second adhesive are filled in the gaps. - View Dependent Claims (6, 7, 9, 10)
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8. A composite sheet for shielding a magnetic field and an electromagnetic wave, the composite sheet comprising:
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a first magnetic sheet having a first permeability and formed of an amorphous alloy or a nanocrystallized alloy; and a second magnetic sheet having a second permeability lower than the first permeability, wherein the first magnetic sheet is divided into a number of pieces having gaps between the pieces, a protective film is laminated on one side surface of the first magnetic sheet and a double-sided tape is laminated on the other side surface of the first magnetic sheet, wherein the protective film includes a first adhesive, the double-sided tape includes a second adhesive, and a portion of the first adhesive and a portion of the second adhesive are filled in the gaps, and wherein the first magnetic sheet is arranged in a predetermined area in a center portion of the composite sheet, and the second magnetic sheet is annularly formed to surround the first magnetic sheet.
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Specification