OLED PIXEL DRIVING CIRCUIT, ARRAY SUBSTRATE AND DISPLAY DEVICE

Disclosed in the invention are an OLED pixel driving circuit, an array substrate and a display device. The pixel driving circuit comprises a driving control unit, a first light emitting unit and a second light emitting unit. In the invention, two OLEDs share one driving control unit, so the two OLEDs alternately emit light. In this way, the light emitting time of the OLEDs is reduced, the number of parasitic capacitors and data lines in a panel is reduced, and the aperture ratio of the OLED device is increased; and the OLEDs are enabled to be in reverse bias in a non-light emitting display frame, so that the OLEDs do not have to be in a DC bias state for a long time, and thus, the aging of the OLED device is slowed down. In addition, no other reverse bias voltage is connected externally, so the difficulty of tracing of the pixel circuit and the crosstalk from a bias voltage line to other signal lines are reduced.