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Edge grip detection method of a touch panel and a device using the same

  • US 8,963,859 B2
  • Filed: 04/01/2012
  • Issued: 02/24/2015
  • Est. Priority Date: 09/16/2011
  • Status: Active Grant
First Claim
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1. An edge grip detection method of a touch panel, wherein the touch panel comprises a plurality of first axial electrodes, a plurality of second axial electrodes, an edge area and an operation area, the method comprising:

  • a) determining whether an edge area state has changed, comprising steps of;

    determining whether sum of signal strength of the first axial electrode on the edge area is greater than a first threshold value;

    further determining whether sum of signal strength of the first axial electrode on other areas is less than a second threshold value; and

    determining whether number of touched first axial electrodes is less than or equal to number of electrodes on the edge area;

    b) eliminating a first edge signal when the edge area state does not change; and

    c) updating the first edge signal as a next standard signal when the edge area state changes.

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