The present application discloses a pixel circuit of a display panel. The pixel circuit includes a first latch-control sub-circuit configured to provide a data signal under controls of a first scan signal, a latch sub-circuit including a first inverter having an input terminal coupled to receive the data signal and a second inverter, a second latch-control sub-circuit configured to disconnect the second inverter from the first inverter to form an open circuit under controls of the first scan signal or form a latch loop under controls of a second scan signal to stabilize two voltage levels at the first output terminal of the first inverter and the second output terminal of the second output inverter, and an output sub-circuit configured to switch connection between an output terminal and two reference voltage ports under controls of the two voltage levels alternatively.