COMPOSITE MAGNETIC SHEET AND REAR CASE FOR MOBILE USING THE SAME

摘要

PURPOSE: A composite magnetic sheet unit and a rear case for a mobile including the same are provided to use an NFC(Near Field Communication) antenna, thereby extending the communications distance. CONSTITUTION: A second magnetic sheet(120) has higher magnetic permeability than a first magnetic sheet(110). The first magnetic sheet comprises the magnetic permeability of 20 to 50. The second magnetic sheet comprises the magnetic permeability of 100 to 550. The first magnetic sheet has relatively narrower area than the second magnetic sheet. The second magnetic sheet is arranged in the outer area of the first magnetic sheet.