Pixel circuit, method for driving the same, display panel and display device

A pixel circuit, comprising:

• a drive controlling sub-circuit, a data writing sub-circuit, a light-emission controlling sub-circuit, a first resetting sub-circuit, a second resetting sub-circuit, a charging sub-circuit, a capacitor sub-circuit, and a light-emitting element, wherein:
• the drive controlling sub-circuit has a control terminal connected with a first node, a first terminal connected with a second node, and a second terminal connected with a third node;
• and the drive controlling sub-circuit is configured to provide the third node with a potential of the second node under a control of a potential of the first node;
• the data writing sub-circuit has a control terminal connected with a scan signal terminal, a first terminal connected with a data signal terminal, and a second terminal connected with the second node;
• and the data writing sub-circuit is configured to provide the second node with a signal of the data signal terminal under a control of the scan signal terminal;
• the light-emission controlling sub-circuit has a control terminal connected with a light-emission control signal terminal, a first terminal connected with the third node, and a second terminal connected with a fourth node;
• and the light-emission controlling sub-circuit is configured to connect the third node with the fourth node under a control of the light-emission control signal terminal;
• the first resetting sub-circuit has a control terminal connected with a first signal control terminal, a first terminal connected with a reset signal terminal, and a second terminal connected with the fourth node;
• and the first resetting sub-circuit is configured to provide the fourth node with a signal of the reset signal terminal under a control of the first signal control terminal;
• the second resetting sub-circuit has a control terminal connected with the first signal control terminal, a first terminal connected with the third node, and a second terminal connected with the first node;
• and the second resetting sub-circuit is configured to provide the first node with a signal of the third node under the control of the first signal control terminal;
• the charging sub-circuit has a control terminal connected with the first signal control terminal, a first terminal connected with the first voltage signal terminal, and a second terminal connected with the second node;
• and the charging sub-circuit is configured to provide the second node with a signal of the first voltage signal terminal under the control of the first signal control terminal;
• the capacitor sub-circuit has a first terminal connected with the first node, and a second terminal connected with the first voltage signal terminal, and the capacitor sub-circuit is configured to maintain a stable voltage difference between the first node and the first voltage signal terminal;
• and
• the light-emitting element has an anode connected with the fourth node, and a cathode connected with a second voltage signal terminal.