Display Substrate, Pixel Circuit, Driving Method and Display Apparatus

A pixel circuit, comprising:

• a first transistor, a second transistor, and a third transistor, wherein a control electrode of the first transistor is connected to a scan signal line, a first electrode of the first transistor is connected to a data signal line, and a second electrode of the first transistor is connected to a first node;
• a control electrode of the second transistor is connected to a reference signal line, a first electrode of the second transistor is connected to a second node, and a second electrode of the second transistor is connected to a first electrode of a light emitting element;
• a control electrode of the third transistor is connected to the first node, a first electrode of the third transistor is connected to a first power supply line, and a second electrode of the third transistor is connected to the second node;
• and
• wherein the first transistor is configured to supply a signal of the data signal line to the third transistor under control of a signal of the scan signal line;
• the second transistor is configured to supply a signal of the second node to the first electrode of the light emitting element under control of a signal of the reference signal line;
• and the third transistor is configured to supply a signal of the first power supply line to the second node under control of the signal of the data signal line.