Pixel circuit, array substrate, disply device and pixel driving method

A pixel circuit comprising:

• a driving transistor, a light emitting device, a reset sub-circuit, an light emitting control sub-circuit, a compensation sub-circuit, and a data writing sub-circuit, wherein
• the reset sub-circuit is coupled to the data writing sub-circuit and the compensation sub-circuit at a first node, and the reset sub-circuit is configured to write a reference voltage provided by a second power terminal to the first node to reset a potential of the first node in response to control of a reset control signal;
• the light emitting control sub-circuit is coupled to a first electrode of the light emitting device and the compensation sub-circuit at a second node, and the light emitting control sub-circuit is configured to write an operation voltage provided by a third power terminal to the second node in response to control of a light emitting control signal;
• the data writing sub-circuit is configured to write a data voltage provided by a data line to the first node in response to control of a scanning control signal;
• the compensation sub-circuit is further coupled to a second electrode of the light emitting device and a first electrode of the driving transistor at a third node, the compensation sub-circuit is further coupled to a gate of the driving transistor, the compensation sub-circuit is configured to acquire, in response to control of a second control signal, the operation voltage written to the second node by the third power terminal through the light emitting control sub-circuit, to acquire, in response to control of the second control signal and a third control signal, a threshold voltage of the driving transistor and a turn-on voltage of the light emitting device, and to write, in response to control of a first control signal, a control voltage to the gate of the driving transistor, the control voltage being equal to a sum of the threshold voltage, the data voltage and the turn-on voltage;
• a second electrode of the driving transistor is coupled to the first power terminal, and the driving transistor is configured to generate a corresponding driving current under the control of the control voltage to drive the light emitting device to emit light.