• US 20170140194A1
  • Filed: 12/07/2015
  • Published: 05/18/2017
  • Est. Priority Date: 06/26/2015
  • Status: Active Grant
First Claim
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1. A fingerprint identification device, comprising:

  • a fingerprint identification module, a plurality of gate lines and a plurality of signal lines;

    wherein the gate lines and the signal lines cross so as to define a plurality of sensing regions, and each of the sensing regions comprises a thin film transistor and a sensing electrode connected to the thin film transistor;

    a gate electrode of the thin film transistor is connected to the corresponding gate line, a source electrode thereof is connected to the corresponding signal line, and a drain electrode thereof is connected to the sensing electrode;

    the signal lines comprise signal-transmitting lines and signal-receiving lines, and each sensing electrode comprises a transmitting electrode connected to the signal-transmitting line and a receiving electrode connected to the signal-receiving line;

    an electric field is generated between the transmitting electrode and the receiving electrode adjacent to the transmitting electrode, and a direction of the electric field is from the transmitting electrode to the receiving electrode adjacent to the transmitting electrode;

    the fingerprint identification module is connected to each of the signal-receiving lines, and determines, by detecting an intensity of the electric field when a finger is in the electric field, a fingerprint of the finger; and

    the sensing electrodes in an identical row comprise the transmitting electrodes and the receiving electrodes, and are connected to an identical gate line.

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