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Magnetic shielding sheet for digitizer and portable terminal having same

  • US 9,578,792 B2
  • Filed: 05/27/2014
  • Issued: 02/21/2017
  • Est. Priority Date: 05/28/2013
  • Status: Active Grant
First Claim
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1. A magnetic field shielding sheet for a digitizer, the magnetic field shielding sheet comprising:

  • a magnetic field shielding main sheet that is disposed on a rear surface of the digitizer to thus prevent affecting the digitizer; and

    a magnetic field shielding sub-sheet that is laminated in a dual on at least one of four side edges of the magnetic field shielding main sheet, to prevent the digitizer from being affected by a magnesium frame inside a portable terminal device,wherein the magnetic field shielding main sheet is made of an amorphous alloy or a nanocrystalline alloy, and comprises a shielding layer made of a plurality of pieces by flakes, a cover layer adhered to one surface of the shielding layer, and a double-sided tape adhered to the other surface of the shielding layer, andwherein the magnetic field shielding sub-sheet is formed of a band shape having a certain width and is attached to a periphery of the magnetic field shielding main sheet while having the same structure as that of the magnetic field shielding main sheet.

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