ORGANIC LIGHT EMITTING DIODE (OLED) PIXEL, DISPLAY DEVICE INCLUDING THE SAME AND DRIVING METHOD THEREOF

摘要

An organic light emitting diode (OLED) display device includes a plurality of OLED pixels. In one aspect, each pixel respectively includes a first capacitor connected between a data line and a first node, a switching transistor connecting the first node and a second node, a second capacitor connected between the second node and a third node, a driving transistor having a gate electrode connected to the third node and controlling a driving current flowing from a first power source voltage to an OLED, and a reference voltage transistor transmitting a reference voltage to the first node. When a light emitting step occurs in which the OLED emits light, it is simultaneously performed in a plurality of pixels by use of a driving current, the switching transistor is turned off and the reference voltage transistor is turned on such that the reference voltage is transmitted to the first node, and a data voltage corresponding to a scan signal of a gate-on voltage respectively corresponding to a plurality of pixels is stored to the first capacitor. Aspects also include pixel circuits and methods of driving the pixels in the display.

主权项

1. An organic light emitting diode (OLED) display device, comprising:
a plurality of pixels, each pixel comprising a first capacitor connected between a data line and a first node, a switching transistor connecting the first node and a second node, a second capacitor connected between the second node and a third node, a driving transistor having a gate electrode connected to the third node and configured to control a driving current flowing from a first power source voltage to an organic light emitting diode (OLED), and a reference voltage transistor configured to transmit a reference voltage to the first node, wherein, when a light emitting step in which the OLED emits light is simultaneously performed in a plurality of pixels by a driving current, the switching transistor is turned off and the reference voltage transistor is turned on such that the reference voltage is transmitted to the first node, and a data voltage corresponding to at least a portion of the pixels is stored in the first capacitor, and wherein the switching transistor is configured to be turned on by a compensation control signal of the gate-on voltage so as to connect the first node and the second node.