Pixel circuit, pixel driving method and display device

A pixel driving method, applied to a pixel circuit, wherein the pixel circuit comprises a light emitting element, a first voltage control circuit, a second voltage control circuit, a driving circuit, a first energy storage circuit, a data writing circuit, and a reset circuit;

• the first voltage control circuit comprises a first control transistor, the driving circuit comprises a driving transistor, and a difference between a threshold voltage of the first control transistor and a threshold voltage of the driving transistor is within a first range;
• the first voltage control circuit is configured to control a potential of a first control node under control of a reset control signal on a reset control line;
• the second voltage control circuit is electrically connected to the first control node and a second control node, and is configured to control a potential of the second control node under control of the potential of the first control node, and the second control node is electrically connected to a first terminal of the driving circuit;
• the first energy storage circuit is electrically connected to a control terminal of the driving circuit, and is configured to store electric energy;
• the reset circuit is configured to reset a potential of the control terminal of the driving circuit under control of the reset control signal, to cause the driving circuit to disconnect connection between the first terminal of the driving circuit and the second terminal of the driving circuit;
• the data writing circuit is configured to control a data voltage on a data line to be written to the control terminal of the driving circuit under control of a data writing control signal on a data writing control line;
• the second terminal of the driving circuit is electrically connected to the light emitting element, and the driving circuit is configured to generate, under control of the potential of the control terminal of the driving circuit, a driving current for driving the light emitting element to emit light;
• the pixel driving method comprises:
• in a reset stage of a display period, under control of the reset control signal on the reset control line, controlling, by the first voltage control circuit, the potential of the first control node;
• under control of the potential of the first control node, controlling, by the second voltage control circuit, the potential of the second control node;
• under control of the reset control signal, resetting, by the reset circuit, the potential of the control terminal of the driving circuit, to cause the driving circuit to disconnect connection between the first terminal of the driving circuit and the second terminal of the driving circuit.

A display device, comprising a pixel circuit, wherein the pixel circuit comprises a light emitting element, a first voltage control circuit, a second voltage control circuit, a driving circuit, a first energy storage circuit, a data writing circuit, and a reset circuit;

• wherein the first voltage control circuit comprises a first control transistor, the driving circuit comprises a driving transistor, and a difference between a threshold voltage of the first control transistor and a threshold voltage of the driving transistor is within a first range;
• the first voltage control circuit is configured to control a potential of a first control node under control of a reset control signal on a reset control line;
• the second voltage control circuit is electrically connected to the first control node and a second control node, and is configured to control a potential of the second control node under control of the potential of the first control node, and the second control node is electrically connected to a first terminal of the driving circuit;
• the first energy storage circuit is electrically connected to a control terminal of the driving circuit, and is configured to store electric energy;
• the reset circuit is configured to reset a potential of the control terminal of the driving circuit under control of the reset control signal, to cause the driving circuit to disconnect connection between the first terminal of the driving circuit and the second terminal of the driving circuit;
• the data writing circuit is configured to control a data voltage on a data line to be written to the control terminal of the driving circuit under control of a data writing control signal on a data writing control line;
• and
• the second terminal of the driving circuit is electrically connected to the light emitting element, and the driving circuit is configured to generate, under control of the potential of the control terminal of the driving circuit, a driving current for driving the light emitting element to emit light.