Pixel circuit, driving method thereof and display device

A pixel circuit, comprising:

• a first thin film transistor, a second thin film transistor, a third thin film transistor, a fourth thin film transistor, a fifth thin film transistor, a sixth thin film transistor, a light-emitting diode and a storage capacitor,
• wherein, a gate of the first thin film transistor is separately connected to a source of the second thin film transistor, a source of the third thin film transistor and one end of the storage capacitor, a drain of the third thin film transistor is separately connected to a drain of the fifth thin film transistor and a reference voltage signal line, the other end of the storage capacitor is separately connected to a drain of the fourth thin film transistor and a source of the fifth thin film transistor, and a source of the fourth thin film transistor is connected to a data signal line;
• a source of the first thin film transistor is connected to a first power source;
• and
• a drain of the first thin film transistor is separately connected to a drain of the second thin film transistor and a source of the sixth thin film transistor, a drain of the sixth thin film transistor is connected to an anode of the light-emitting diode, and a cathode of the light-emitting diode is connected to a second power source.