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PIXEL AND ORGANIC LIGHT EMITTING DISPLAY DEVICE USING THE SAME

  • US 20120019501A1
  • Filed: 01/21/2011
  • Published: 01/26/2012
  • Est. Priority Date: 07/20/2010
  • Status: Active Grant
First Claim
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1. A pixel comprising:

  • an organic light emitting diode of which a cathode electrode is connected to a second power supply;

    a first transistor for controlling the amount of current that flows to the second power supply through the organic light emitting diode from a first power supply;

    a second transistor connected between a data line and a second node, and turned on by a scanning signal supplied to an i-th scanning line, wherein i is a natural number;

    a first capacitor connected between a first node and the second node, wherein the first node is connected to a gate electrode of the first transistor;

    a second capacitor connected between the first power supply and the first node;

    a plurality of third transistors connected between the first node and the second electrode of the first transistor, wherein the third transistors are turned on by the scanning signal supplied to the i-th scanning line;

    a plurality of fourth transistors connected between an initial power supply and the first node, and turned on by a scanning signal supplied to the i−

    1-th scanning line; and

    a leakage current prevention unit for supplying a fixed voltage to a fourth node between the fourth transistors and to a third node between the third transistors.

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