Pixel, display device including the pixel, and driving method of the display device

摘要

A pixel, a display device including the same, and a driving method thereof. After the anode voltage of an organic light emitting diode (OLED) is discharged and reset, a first voltage corresponding to a data voltage applied to a storage capacitor is transmitted to a compensation capacitor. A voltage corresponding to the threshold voltage of the driving transistor is transmitted to the compensation capacitor. The data voltage is stored according to a data signal corresponding to the storage capacitor. The organic light emitting diode (OLED) emits light according to a driving current flowing to the driving transistor by the voltage stored to the compensation capacitor. Here, the light emitting steps of a plurality of pixels are concurrently generated, and a scan step and the light emitting step are temporally overlapped.

主权项

1. A driving method of a display device including a plurality of pixels each including an organic light emitting diode (OLED), a driving transistor configured to be connected to a driving voltage and for supplying a driving current to the OLED, a compensation capacitor connected to a gate electrode of the driving transistor, and a storage capacitor electrically connected to or disconnected from the compensation capacitor, the method comprising:
a reset step in which a first voltage corresponding to a data voltage applied to the storage capacitor is transmitted to the compensation capacitor after an anode voltage of the OLED is discharged and reset; a compensation step in which a voltage corresponding to a threshold voltage of the driving transistor is transmitted to the compensation capacitor; a data voltage storing step of a current frame in which a data voltage of the current frame is stored according to a corresponding data signal to the storage capacitor; and a light emitting step of the current frame in which the OLED emits light according to the driving current flowing to the driving transistor by the voltage stored to the storage capacitor of a previous frame, wherein the light emitting steps of the plurality of pixels are concurrently generated, and the data voltage storing step of one of the plurality of pixels and a light emitting portion of the light emitting step of a same one of the plurality of pixels are temporally overlapped, and wherein the storage capacitor and the compensation capacitor are configured to be disconnected from each other during the light emitting step.