Pixel circuit, driving method thereof, display device

A pixel circuit comprising:

• a driving sub-circuit;
• a holding sub-circuit;
• and
• a light emitting sub-circuit,
• wherein the driving sub-circuit is connected to a driving signal terminal, a data signal terminal and a driving node, and configured to provide the driving node with a data signal from the data signal terminal under control of a driving signal from the driving signal terminal,
• wherein the holding sub-circuit is connected to the driving node, a first switching signal terminal, a first power signal terminal and a second power signal terminal, and configured to acquire a potential of the driving node under control of a first switching signal from the first switching signal terminal, and maintain the potential of the driving node unchanged under control of a first power signal from the first power signal terminal and a second power signal from the second power signal terminal, and
• wherein the light emitting sub-circuit is connected to the driving node and configured to emit light under driving of the driving node.