Voltage-driven pixel circuit, driving method thereof and display panel

A voltage-driven pixel circuit, comprising a driving transistor, a retaining transistor, a switching transistor, a compensating transistor, a storage capacitance and an OLED device, wherein

• a gate of the switching transistor is connected to a gate line, a source thereof is connected to a data line, and a drain thereof is connected to one end of the storage capacitance and a source of the retaining transistor, the switching transistor is configured to control a writing of a voltage signal in the data line,
• a gate of the retaining transistor is connected to a first control signal line which is used to control a turn-on of the retaining transistor, a drain of the retaining transistor is connected to a gate of the driving transistor, the retaining transistor is configured to retain a gate voltage of the driving transistor,
• a gate of the compensating transistor is connected to a second control signal line which is used to control a turn-on of the compensating transistor, a source thereof is connected to a drain of the driving transistor, and a drain thereof is connected to the gate of the driving transistor,
• a source of the driving transistor is connected to the other end of the storage capacitance and an anode of the OLED device, the driving transistor is configured to drive the OLED device,
• the drain of the driving transistor and the source of the compensating transistor are both connected to a first power supply line,
• a cathode of the OLED device is connected to a second power supply line.