Importance

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Abstract

There provides a display device, a pixel driving circuit and a driving method thereof. The pixel driving circuit includes an organic light emitting diode, a first, a second and a third switching transistor, a storage capacitor, a driving transistor, a compensation unit and a reset unit. The first switching transistor writes a data signal into the storage capacitor via the driving transistor and the compensation unit; the second switching transistor applies a driving voltage to the driving transistor; the third switching transistor applies a driving current output from the driving transistor to the organic light emitting diode; the compensation unit writes a threshold voltage of the driving transistor into the storage capacitor; the storage capacitor stores a written voltage signal and apply it to the driving transistor; and the reset unit resets the organic light emitting diode and the storage capacitor.

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First Claim