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Method, Device, and System for Detecting Transmitter Approaching or Touching Touch Sensitive Display

  • US 20150130734A1
  • Filed: 11/10/2014
  • Published: 05/14/2015
  • Est. Priority Date: 11/08/2013
  • Status: Active Grant
First Claim
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1. A method for detecting a transmitter approaching or touching a touch sensitive display, the transmitter transmitting an electrical signal mixed from a plurality of frequencies, the touch sensitive display including a liquid crystal layer disposed between pixel electrodes and common electrodes and a plurality of second electrodes, wherein the common electrodes include a plurality of first electrodes and a plurality of sensing points are formed at intersections of the first and second electrodes;

  • the method including the following steps of;

    calculating the total signal strength of a received signal with respect to each of the first electrodes;

    calculating the total signal strength of a received signal with respect to each of the second electrodes; and

    calculating a relative position between the transmitter and the touch sensitive display according to the calculated total signal strengths of the received signals with respect to each of the first electrodes and the second electrodes.

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