Patent ID: 9626903
Date: 2017-04-18
CPC Classifications: G09G

Claim:
1. An organic light-emitting diode (OLED) display panel comprising: a first transistor configured to receive a data signal in response to a scan signal; a second transistor configured to receive a first power signal from a first power source in response to a bias signal and to output a source-driving signal; a third transistor configured to receive the source-driving signal in response to an output signal of the first transistor and to output a driving signal; an OLED which comprises i) a first electrode being electrically connected to the third transistor and configured to receive the driving signal and ii) a second electrode connected to a second power source; a fourth transistor electrically connected to the third transistor and configured to receive the driving signal; a first capacitor having first and second electrodes opposing each other, wherein the first electrode of the first capacitor is directly connected to the first power source, wherein the second electrode of the first capacitor is directly connected to a non-control electrode of the first transistor and a control electrode of the third transistor; and a second capacitor having first and second electrodes opposing each other, wherein the first electrode of the second capacitor is directly connected to the first power source and the first electrode of the first capacitor, and wherein the second electrode of the second capacitor is directly connected to the bias signal and a control electrode of the second transistor, wherein the fourth transistor comprises a control electrode, an input electrode and an output electrode, the input electrode being electrically connected to the third transistor, and wherein the control electrode of the fourth transistor is directly connected to the first power source and the output electrode of the fourth transistor is directly connected to a control power source different from the first power source.