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Input device

  • US 9,001,088 B2
  • Filed: 07/11/2012
  • Issued: 04/07/2015
  • Est. Priority Date: 07/11/2011
  • Status: Active Grant
First Claim
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1. An input device comprising:

  • a display unit for outputting a display screen;

    an electromagnetic sensing unit disposed under the display unit to sense a magnetic field generated by an electromagnetic pen upon approaching or contacting a top surface of the display unit;

    a magnetic field partial shielding layer disposed under the electromagnetic sensing unit, in which magnetic powder is scattered; and

    a geo-magnetic sensor for sensing Earth'"'"'s magnetic field passing through the magnetic field partial shielding layer.

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