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Device for processing signals from a pressure-sensing touch panel

  • US 20190050080A1
  • Filed: 08/07/2018
  • Published: 02/14/2019
  • Est. Priority Date: 08/08/2017
  • Status: Active Grant
First Claim
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1. A device for processing signals from a projected capacitance touch panel, the touch panel comprising a laser of piezoelectric material disposed between a plurality of first electrodes and at least one second electrode, the device configured, in response to receiving input signals from a given first electrode, to generate a pressure signal indicative of a pressure applied to the touch panel proximate to the given first electrode and a capacitance signal indicative of a capacitance of the given first electrode, the device comprising:

  • an amplifier configured to generate an amplified signal based on the input signals; and

    an analog-to-digital converter configured to be synchronised with the capacitance signal, and to generate the pressure signal by sampling the amplified signal at times corresponding, to the amplitude of the capacitance signal being substantially equal to a selected value.

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