Pixel circuit and display panel

A pixel circuit, comprising:

• a driving transistor configured to provide a driving current;
• a light-emitting circuit coupled between the driving transistor and a light-emitting element and configured to provide the driving current to the light-emitting element according to a light-emitting signal;
• and
• a controlling circuit coupled to the light-emitting circuit, coupled to the driving transistor at a first node, and configured to set a first voltage at the first node based on a plurality of reference voltages according to a plurality of controlling signals,
• wherein during a light-emitting period, the light-emitting circuit generates an offset voltage on a first terminal of the light-emitting element according to the light-emitting signal, such that the controlling circuit sets the first voltage based on the offset voltage according to the controlling signals, and the driving transistor generates the driving current according to the first voltage,
• wherein the controlling circuit comprises:
• a resetting circuit coupled to the first node and configured to reset the first voltage based on a first reference voltage according to a first controlling signal during a resetting period;
• a writing circuit coupled to the first node and the light-emitting circuit and configured to set the first voltage based on a second reference voltage according to a second controlling signal during a writing and compensating period;
• and
• a compensating circuit coupled to the first node, the light-emitting circuit, and the driving transistor and configured to set the first voltage based on a third reference voltage according to a third controlling signal during the writing and compensating period.