Organic light emitting display having organic light emitting diode circuit with voltage compensation and technique thereof

An organic light emitting diode circuit, comprising:

• a first capacitor;
• a first TFT, having a first terminal for receiving a first voltage and a second terminal and a gate coupled together to a first end of the first capacitor;
• a second TFT, having a first terminal for receiving a second voltage and a gate coupled to the gate of the first TFT;
• a third TFT, having a first terminal for receiving a pixel voltage, a second terminal coupled to a second end of the first capacitor and a gate for receiving a scan signal;
• a reset circuit, for setting the first end of the first capacitor to have a first voltage level;
• and
• an OLED, having an anode coupled to a second terminal of the second TFT and a cathode for receiving a third voltage;
• wherein the first voltage level is smaller than a voltage level of the first voltage.

An organic light emitting display, comprising:

• at least an organic light emitting diode circuit, comprising:
• a first capacitor;
• a first TFT, having a first terminal for receiving a first voltage and a second terminal coupled to a gate of the first TFT and a first end of the first capacitor;
• a second TFT, having a first terminal for receiving a second voltage and a gate coupled to a gate of the first TFT;
• a third TFT, having a first terminal for receiving a pixel voltage, a second terminal coupled to a second end of the first capacitor and a gate for receiving a scan signal;
• a reset circuit, for setting the first end of the first capacitor to have a first voltage level;
• and
• an OLED, having an anode coupled to a second terminal of the second TFT and a cathode for receiving a third voltage;
• and
• a driving unit, for driving the organic light emitting diode circuit, the driving unit comprising:
• a data driving circuit, for outputting the pixel voltage;
• a scan driving circuit, for outputting the scan signal;
• and
• a timing control circuit, for controlling the reset circuit to set the first end of the first capacitor to have the first voltage level;
• wherein the first voltage level is smaller than a voltage level of the first voltage and the driving unit is for supplying the first voltage, the second voltage and the third voltage.