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Apparatus and method for protecting fingerprint sensing circuitry from electrostatic discharge

  • US 20080267462A1
  • Filed: 04/30/2007
  • Published: 10/30/2008
  • Est. Priority Date: 04/30/2007
  • Status: Active Grant
First Claim
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1. A fingerprint sensor comprising:

  • a non-conductive substrate providing a first surface onto which a user can apply a fingerprint to be sensed;

    a sensor circuit applied to a second surface of the non-conductive substrate opposite the first surface to sense a fingerprint when juxtaposed proximally thereto;

    an electrostatic discharge conductor applied to the non-conductive surface and located between an area where a fingerprint is swiped and the sensor circuit, the electrostatic discharge conductor discharging electrostatic charge resulting from a user swiping a fingerprint across the first surface.

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