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PIXEL CIRCUIT, DRIVING METHOD THEREOF AND DISPLAY DEVICE

  • US 20200135109A1
  • Filed: 06/18/2019
  • Published: 04/30/2020
  • Est. Priority Date: 10/31/2018
  • Status: Active Grant
First Claim
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1. A pixel circuit, comprising:

  • a light emitting unit;

    a drive transistor comprising a first electrode being connected to a first terminal of the light emitting unit, and configured to drive the light emitting unit to emit light so as to display an image frame; and

    a control circuit connected with a gate of the drive transistor and the first electrode of the drive transistor and configured to control the drive transistor according to signals of control lines, the controlling comprising;

    resetting, in a reset stage of the image frame, a voltage of the first electrode of the drive transistor by applying a reset voltage, and sensing, in a sense stage, a threshold voltage of the drive transistor by applying a reference voltage,the control circuit being further configured to control, in an offset elimination stage arranged at the beginning of the image frame and prior to the reset stage, the drive transistor to be switched off, which drive transistor was in an ON state at the end of a previous image frame.

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