Pixel circuit and driving method thereof, display device

A pixel circuit, comprising:

• a reset circuit, a threshold compensation circuit, a data writing circuit, a light emitting control circuit and a driving transistor, wherein the reset circuit, the threshold compensation circuit, the data writing circuit and a control electrode of the driving transistor are coupled to a control node;
• the reset circuit is coupled to a reset control line and a reset power supply terminal and is configured to write a reset voltage provided by the reset power supply terminal into the control node under control of the reset control line;
• the threshold compensation circuit is coupled to a compensation control line and is configured to perform threshold compensation on the driving transistor under control of the compensation control line;
• the data writing circuit is coupled to a corresponding first gate line and a corresponding first data line and is configured to charge the control node according to a data voltage provided by the first data line under control of the first gate line;
• the light emitting control circuit is coupled to a second electrode of the driving transistor, the light emitting control line and a first electrode of the light emitting element and is configured to control the second electrode of the driving transistor to be electrically coupled to or decoupled from the first electrode of the light emitting element under control of the light emitting control line;
• a first electrode of the driving transistor is coupled to a first operating power supply terminal, and the driving transistor is configured to output a corresponding driving current according to a voltage at the control node in response to that the second electrode of the driving transistor is electrically coupled to the first electrode of the light emitting element.