Pixel circuit, a driving method thereof and a display apparatus

A pixel circuit, comprising:

• a resetting sub-circuit, connected to a first signal terminal, a first voltage terminal, a second signal terminal, a first node and a second node, and configured to control potentials of the first node and the second node according to inputting signals of the first signal terminal and the second signal terminal;
• a charging sub-circuit, connected to a third signal terminal and the second node, and configured to control a potential of the second node according to an inputting signal of the third signal terminal;
• a compensating sub-circuit, connected to the second node, the first node, the first voltage terminal, a fourth signal terminal, a third node, the second voltage terminal and a fifth signal terminal, and configured to control the potentials of the first node and the third node according to inputting signals of the fourth signal terminal and the fifth signal terminal and the potential of the second node;
• and
• an outputting sub-circuit, connected to a first terminal of a light emitting device which has its second terminal connected to a ground, wherein the outputting sub-circuit is connected to the third node, a sixth signal terminal, a reading terminal and a seventh signal terminal, and configured to control a signal outputted to the first terminal of the light emitting device and the reading terminal according to the inputting signal of the sixth signal terminal and the seventh signal terminal and the potential of the third node.