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Photoelectric conversion device and method for operating the same

  • US 9,209,209 B2
  • Filed: 10/20/2011
  • Issued: 12/08/2015
  • Est. Priority Date: 10/29/2010
  • Status: Active Grant
First Claim
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1. A method for operating a photoelectric conversion device,wherein one of electrodes of a charge storage capacitor portion is electrically connected to a source electrode of a first transistor, a drain electrode of a second transistor, a drain electrode of a third transistor, and a sixth terminal,wherein the other of the electrodes of the charge storage capacitor portion is electrically connected to an anode of a photodiode, a source electrode of the third transistor, and a second terminal,wherein a source electrode of the second transistor is electrically connected to a cathode of the photodiode,wherein a drain electrode of the first transistor is electrically connected to a first terminal;

  • wherein a gate electrode of the first transistor is electrically connected to a third terminal,wherein a gate electrode of the second transistor is electrically connected to a fourth terminal; and

    wherein a gate electrode of the third transistor is electrically connected to a fifth terminal,the method comprising the steps of;

    setting the first terminal at a high power supply potential and the second terminal at a low power supply potential,supplying a first potential for turning on the third transistor to the fifth terminal to discharge the charge storage capacitor portion,supplying a second potential for turning off the third transistor to the fifth terminal after supplying the first potential,supplying a third potential for turning on the first transistor to the third terminal to charge the charge storage capacitor portion,supplying a fourth potential for turning off the first transistor to the third terminal after supplying the third potential,supplying a fifth potential for turning on the second transistor to the fourth terminal to discharge the charge storage capacitor portion through the photodiode, supplying a sixth potential for turning off the second transistor to the fourth terminal after supplying the fifth potential, andreading a seventh potential of the charge storage capacitor portion through the sixth terminal as a signal.

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