ORGANIC LIGHT EMITTING DIODE DISPLAY DEVICE AND METHOD FOR DRIVING THE SAME

摘要

Discussed is an OLED display device. The OLED display device includes a first transistor, a driving transistor, a first capacitor, a second transistor, an OLED, and a third transistor. The first transistor supplies a data voltage or a reference voltage to a first node according to a scan signal. A gate of the driving transistor is connected to the first node, a source of the driving transistor is connected to a second node, and a drain of the driving transistor is connected to a fourth node. The first capacitor is connected between the first and second nodes. The second transistor supplies a high-level source voltage to the second node. The OLED emits light with a difference voltage between voltages of the first and second nodes. The third transistor connects the fourth node to a fifth node according to a second emission control signal.

主权项

1. An organic light emitting diode (OLED) display device, comprising:
a first transistor supplying a data voltage or a reference voltage to a first node according to a scan signal; a driving transistor, a gate of the driving transistor being connected to the first node, a source of the driving transistor being connected to a second node, and a drain of the driving transistor being connected to a fourth node; a first capacitor connected between the first and second nodes, and storing a threshold voltage of the driving transistor; a second capacitor connected between the second node and the third node that is a source of the second transistor; a second transistor supplying a high-level source voltage, applied to a third node, to the second node according to a first emission control signal; an OLED emitting light with a difference voltage between the data voltage and the reference voltage; and a third transistor connecting the fourth node to a fifth node according to a second emission control signal, the fifth node being an anode of the OLED.