Organic light emitting display and method of driving the same

摘要

A data driver supplies a data signal to a display panel to control luminance of a plurality of pixels. The data signal comprises a plurality of frames, and each of the frames comprises a plurality of sub-frames. Each of the sub-frames comprises an addressing time, followed by an emission time, followed by an erase time. Subpixels each include a first scan line switch controlled by the first scan line signal to turn on during the addressing time of each sub-frame and to turn off during the emission time and the erase time of each sub-frame. A second scan line switch is controlled by a second scan line signal to provide a discharge path to discharge the storage capacitor during the erase time of each sub-frame.

主权项

1. A display device comprising:
a display panel comprising a plurality of pixels for displaying an image, each of the plurality of pixels comprising a plurality of subpixels for displaying different components of the pixels; a data driver to supply a data signal to the display panel to control luminance of the plurality of pixels, the data signal comprising a plurality of frames, each of the frames comprising a plurality of sub-frames, each of the sub-frames comprising an addressing time, followed by an emission time, and followed by an erase time; a scan driver to supply first and second scan line signals to the display panel; wherein each of the subpixels is driven by the frames including the plurality of subframes and comprises:
a first scan line switch controlled by the first scan line signal to turn on during the addressing time of each sub-frame and to turn off during the emission time and the erase time of each sub-frame;a storage capacitor to store a data voltage corresponding to the data signal when the first scan line switch is on during the addressing time of each sub-frame and to discharge the data voltage during the erase time of each sub-frame;a driving transistor having a gate electrode coupled to the storage capacitor, the driving transistor to turn on during the emission time of each sub-frame when the data voltage of the storage capacitor meets a threshold voltage of the driving transistor and to turn off during the addressing time and the erase time of each sub-frame when the data voltage does not meet the threshold voltage;a light emitting diode coupled to the driving transistor and to emit light when the driving transistor is on during the emission time to drive current through the light emitting diode;a second scan line switch controlled by the second scan line signal to provide a discharge path to discharge the storage capacitor during the erase time of each sub-frame.