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Touch panel and coordinate measuring system having the same

  • US 10,379,694 B2
  • Filed: 08/24/2015
  • Issued: 08/13/2019
  • Est. Priority Date: 08/27/2014
  • Status: Expired due to Fees
First Claim
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1. A touch panel comprising:

  • a channel electrode unit configured to include a plurality of electrodes, the plurality of electrodes including a plurality of first electrodes disposed in a first direction and a plurality of second electrodes disposed in a second direction intersecting with the first direction; and

    a processor configured to;

    apply a driving signal to at least two electrodes of the plurality of electrodes in the channel electrode unit,transmit the driving signal to a resonance circuit of a stylus pen approaching the touch panel through a capacitive coupling, andreceive response signals generated from the resonance circuit of the stylus pen from each of the plurality of electrodes to determine a location of the stylus pen including the resonance circuit,wherein the processor is further configured to;

    determine a location of the stylus pen,apply a first driving signal to a first plurality of electrodes corresponding to the location of the stylus pen, andapply a second driving signal, which is an inversion of the first driving signal, to a second plurality of electrodes disposed adjacent to the first plurality of electrodes.

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