OLED and its drive circuit and drive its method

OLED and its drive circuit and drive its method

  • CN 102,945,654 B
  • Filed: 12/11/2012
  • Issued: 05/11/2016
  • Est. Priority Date: 10/11/2012
  • Status: Active Grant
First Claim
Patent Images

1. drive a method for the drive circuit of OLED, this drive circuit includes multiple pixels and a controlElement processed, and respectively this pixel packets contains a first transistor, a transistor seconds, one the 3rd transistor, an electric capacity and one and hasOLED, wherein this control element is electrically connected to the first end of described transistor seconds, and the method includes:

  • Provide respectively a reference voltage to fill being electrically connected to the respectively first end of respectively this electric capacity of the control end of this transistor secondsElectricity, and provide one to reset voltage to being electrically connected to the second end of each this transistor seconds and each this Organic Light Emitting DiodeThe second end electric discharge of respectively this electric capacity of anode, correctly to write a data voltage that drives new picture;

    Stop the respectively electric discharge of the second end of this electric capacity, and utilize this control element provide a drive voltage signal to respectively this secondTransistorized first end, to charge to being electrically connected to respectively the second end of respectively this electric capacity of the second end of this transistor seconds;

    Utilize respectively this data voltage to the respectively first end charging of this electric capacity, and stop providing this drive voltage signal;

    AndSuspension joint is the first end of this electric capacity respectively, and drives described Organic Light Emitting Diode;

    Wherein, this drive voltage signal include reset period, a critical voltage compensation period, data write the period andOne luminous period, reseting this drive voltage signal of period at this is logic low level, at critical voltage compensation this driving electricity of periodPress signal system to be converted to logic high levle from logic low level, write this drive voltage signal of period in data and be converted to logic lowLevel, is converted to logic high levle in this drive voltage signal of luminous period from logic low level.

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