Patent ID: 6937215
Filing Date: 2005-08-30
Classification: G09G

Abstract:
1. A pixel driving circuit of an organic light emitting diode display panel display panel, each scan line and each data line, which are disposed on a display panel according to the present invention, crosswise constitute a pixel, said pixel driver circuit disposed on the pixel comprising: a scan TFT having a gate (G) connected to the scan line and a source (S) connected to the data line; a Vdd-connected TFT having a source (S) connected to the power supply (Vdd), a drain (D) connected to the drain (D) of the scan TFT, and a gate (G) connected to a light-emitting line; a driving TFT having a drain (D) and a source (S) the source (S) being connected to the drain (D) of the Vdd-connected TFT; a diode-connected TFT having a source (S) connected to the drain (D) of the driving TFT and a gate (G) connected to the scan line; a storage capacitor having one end connected to the gate (G) of the driving TFT and the drain (D) of the diode-connected TFT, and the other end connected to the power supply (Vdd); a reset TFT having a source (S) connected to the drain (D) of the diode-connected TFT, and a gate (G) and a drain (D) formed to a diode-connected type and connected to the junction connected to a previous scan line; an OLED-connected TFT having a source (S) connected to the drain (D) of the driving TFT and a gate (G) connected to the light-emitting line; and an organic light emitting diode having one end being an anode and connected to the drain (D) of the OLED-connected TFT, and the other end being cathode and connected to the ground.