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Mobile terminal and coil antenna module

  • US 10,148,001 B2
  • Filed: 07/13/2017
  • Issued: 12/04/2018
  • Est. Priority Date: 03/04/2015
  • Status: Active Grant
First Claim
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1. A mobile terminal comprising:

  • a first case comprising a battery loading portion;

    a battery positioned in the battery loading portion;

    a second case coupled to the first case and positioned over the battery;

    a switch;

    a coil antenna module positioned between the second case and the battery,wherein the coil antenna module comprises;

    an insulating sheet;

    a first coil, a second coil, and a third coil, each positioned on the insulating sheet;

    a magnetic sheet positioned over the first coil, the second coil, and the third coil; and

    a controller electrically coupled to the coil antenna module and configured to;

    provide a near field communication (NFC) function using the first coil;

    automatically charge the battery using the third coil when the mobile terminal is placed at a wireless charging device, wherein during the automatically charge of the battery, the switch is open preventing the second coil to connect to a payment module;

    cause the switch to close to connect the second coil to the payment module according to a payment function;

    transmit a payment signal by the second coil after the switch is closed;

    provide the NFC function with a frequency band of 13.56 MHz or more;

    provide the payment function with a frequency band of 100 kHz or less; and

    provide the automatically charge of the battery with a frequency band from 100 kHz to 300 kHz.

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