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LIGHT SENSING CIRCUIT, TOUCH PANEL INCLUDING THE SAME, AND METHOD OF DRIVING THE SAME

  • US 20110001711A1
  • Filed: 03/09/2010
  • Published: 01/06/2011
  • Est. Priority Date: 07/03/2009
  • Status: Active Grant
First Claim
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1. A light sensing circuit for amplifying a current of a photodiode, comprising:

  • a photodiode comprising a cathode electrode and an anode electrode and for receiving light from the outside and generating a current corresponding to the received light;

    a driving transistor for amplifying the current generated in the photodiode;

    a capacitor for storing a first initiation voltage transmitted to the driving transistor;

    a first switching transistor for compensating for a threshold voltage of the driving transistor corresponding to a current scan signal; and

    a second switching transistor for transmitting the first initiation voltage corresponding to the current scan signal.

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