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Fingerprint sensor including a substrate defining a ledge with contact points for incorporation into a smartcard

  • US 10,762,322 B2
  • Filed: 04/24/2019
  • Issued: 09/01/2020
  • Est. Priority Date: 12/29/2009
  • Status: Active Grant
First Claim
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1. A smart card comprising:

  • a card body formed of at least three layers including an intermediate layer with electrical conductors and outer layers between which the intermediate layer is sandwiched;

    a microchip connected to the electrical conductors; and

    a fingerprint sensor disposed within a cavity formed in the card body, the fingerprint sensor comprising;

    a contact surface;

    sensor electrodes for detecting fingerprint features of a finger placed on the contact surface;

    a substrate layer disposed beneath the sensor electrodes, wherein the substrate layer comprises a first portion, a second portion, and a ledge where an edge of the first portion extends beyond an edge of the second portion;

    conductors connected to the sensor electrodes and extending at least partially through the substrate layer; and

    contact points disposed on the ledge connecting the fingerprint sensor to the electrical conductors of the intermediate layer of the smart card.

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