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OLED PIXEL DRIVING CIRCUIT AND OLED DISPLAY

  • US 20200135107A1
  • Filed: 11/01/2018
  • Published: 04/30/2020
  • Est. Priority Date: 06/21/2018
  • Status: Active Grant
First Claim
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1. An organic light emitting diode (OLED) pixel driving circuit, comprising:

  • a first thin-film transistor (TFT), a second TFT, a third TFT, a fourth TFT, a fifth TFT, a sixth TFT, a capacitor, a first OLED, and a second OLED;

    a gate of the first TFT receiving a scanning signal;

    a source of the first TFT receiving a data signal;

    a drain of the first TFT connected to a gate of the second TFT and one terminal of the capacitor;

    a source of the second TFT and the other terminal of the capacitor both receiving a power supply positive voltage;

    a drain of the second TFT connected to a source of the third TFT and a source of the fifth TFT;

    a gate of the third TFT, a gate of the fourth TFT, a gate of the fifth TFT, and a gate of the sixth TFT all receiving a controlling signal;

    a drain of the third TFT connected to an anode of the first OLED, a cathode of the second OLED, and a source of the sixth TFT;

    a drain of the fifth TFT connected to a cathode of the first OLED, an anode of the second OLED, and a source of the fourth TFT;

    a drain of the sixth TFT and a drain of the fourth TFT both receiving a power supply negative voltage;

    wherein the first TFT, the second TFT, the third TFT, and the fourth TFT are all N-type TFTs;

    the fifth TFT and the sixth TFT are both P-type TFTs;

    when a current frame of image is displayed, the controlling signal is at a high voltage level;

    when a following frame of image is displayed, the controlling signal is at a low voltage level.

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