Magnetic shielding sheet for digitizer and portable terminal having same

A portable terminal device comprising:

• a case;
• a display panel disposed in front of the case;
• a digitizer panel disposed on a rear surface of the display panel;
• a magnetic field shielding sheet disposed on a rear surface of the digitizer panel;
• a magnesium frame mounted inside the case and to which various parts and panels are fixed,
• wherein the magnetic field shielding sheet comprises:
• a magnetic field shielding main sheet that is placed one a rear surface of the digitizer panel and prevents affecting the digitizer panel;
• and
• a magnetic field shielding sub-sheet that is attached on at least one of four side edges of the magnetic field shielding main sheet, and to prevent affecting the digitizer by the magnesium frame,
• 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 a flake-treatment process;
• 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, and
• wherein 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.