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Capacitive touch sensor assembly for use in a wet environment

  • US 9,063,623 B2
  • Filed: 11/07/2012
  • Issued: 06/23/2015
  • Est. Priority Date: 12/01/2011
  • Status: Active Grant
First Claim
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1. A controller for use in a wet environment comprising:

  • a ground pad;

    a sensor element generating an electric field having an active region;

    a flexible layer having a conductive portion overlaying the sensor element to surround the active region with the conductive portion capacitively coupled to the ground pad without direct conductive contact between the ground pad and conductive portion; and

    a control circuit responsive to a capacitance between the sensor element and the conductive portion to generate an output corresponding to a switch state.

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