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METHOD OF DETECTING TOUCH AND APPARATUS FOR DETECTING TOUCH USING THE SAME

  • US 20140320450A1
  • Filed: 04/23/2014
  • Published: 10/30/2014
  • Est. Priority Date: 04/25/2013
  • Status: Abandoned Application
First Claim
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1. A touch detecting apparatus comprising:

  • a signal source configured to generate a variable phase signal including a reference phase signal and an out-of-phase signal that is out of phase with the reference phase signal;

    a touch panel including a plurality of driving electrodes and a plurality of sensing electrodes, wherein the variable phase signal is applied to one of the plurality of driving electrodes, and the sensing electrode outputs a touch signal modulated by the variable phase signal;

    a demodulation circuit unit configured to demodulate the touch signal modulated by the variable phase signal using the variable phase signal; and

    an accumulator configured to accumulate the demodulated touch signal to detect the touch.

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