PIXEL, DISPLAY DEVICE INCLUDING THE SAME AND DRIVING METHOD THEREOF

摘要

A display device comprising a plurality of pixels is disclosed. In one aspect, each pixel of the display device comprises a first capacitor connected between a data line and a first node, a reference voltage transistor configured to apply a reference voltage on the first node, a driving transistor having a gate connected to a second node and configured to control a drive current flowing from a first power supply voltage to an organic light emitting diode in response to a voltage of the second node applied to the gate of the driving transistor, a light emitting transistor configured to apply the first power supply voltage to an electrode of the driving transistor in response to a light emission signal applied to a gate of the light emitting transistor, a second capacitor connected between the second node and an anode of the organic light emitting diode, and a relay transistor configured to electrically connect the first node and the second node in response to a write signal applied to a gate of the relay transistor.

主权项

1. A display device comprising a plurality of pixels, each pixel comprising:
a first capacitor connected between a data line and a first node; a reference voltage transistor configured to apply a reference voltage on the first node; a driving transistor having a gate connected to a second node and configured to control a drive current flowing from a first power supply voltage to an organic light emitting diode in response to a voltage of the second node applied to the gate of the driving transistor; a light emitting transistor configured to apply the first power supply voltage to an electrode of the driving transistor in response to a light emission signal applied to a gate of the light emitting transistor; a second capacitor connected between the second node and an anode of the organic light emitting diode; and a relay transistor configured to electrically connect the first node and the second node in response to a write signal applied to a gate of the relay transistor, wherein during a light emission period, the organic light emitting diode is configured to emit an intensity of light based at least in part on a drive current flowing through the driving transistor, the drive current of the driving transistor determined at least in part by a voltage stored in the second capacitor, and wherein during a scanning period, the relay transistor is configured to be turned off and the reference voltage transistor is configured to be turned on to apply the reference voltage on the first node, such that a data voltage is stored in the first capacitor, the data voltage determined at least in part by an amount of current flowing through the reference voltage transistor.