Display device and driving method thereof

A display device comprising:

• a transmission gate that supplies a precharge voltage and a data voltage;
• a capacitor;
• a light emitting element;
• a driving transistor having an input terminal connected to a driving voltage, a control terminal connected to the capacitor, and an output terminal;
• a first switching element that operates in response to a gate signal and is connected between the transmission gate and the capacitor;
• a second switching element that operates in response to the gate signal and is connected between the control terminal and the output terminal of the driving transistor;
• a third switching element that operates in response to the gate signal and is connected between a reference voltage and the capacitor;
• and
• a fourth switching element that operates in response to the gate signal and is connected between the output terminal of the driving transistor and the light emitting element,
• wherein the precharge voltage is applied to the capacitor in a first period of three periods that are continued in sequence, the data voltage is applied to the capacitor in a second period, and the reference voltage is applied to the capacitor in a third period.

A method of driving a display device, which includes a transmission gate, and each pixel of the display device includes a capacitor, a light emitting element, a first switching transistor, a second switching transistor, a third switching transistor, a fourth switching transistor, a driving transistor having a control terminal connected to the capacitor, a first terminal connected to a driving voltage, and a second terminal, the method comprising the steps of:

• (A) applying a precharge voltage and a data voltage to the transmission gate in sequence;
• (B) connecting between the transmission gate and the capacitor by applying a gate signal to a first switching transistor of a pixel of the display device when the precharge voltage and the data voltage are applied to the transmission gate;
• (C) connecting between the control terminal and the second terminal of the driving transistor by applying the gate signal to a second switching transistor of the pixel;
• (D) connecting the capacitor to a reference voltage by applying the gate signal to a third switching transistor of the pixel after the application of the data voltage to the transmission gate;
• and
• (E) connecting between the second terminal of the driving transistor and the light emitting element by applying the gate signal to a fourth switching transistor of the pixel.