Pixel circuit, display panel, driving method and display device

A display panel comprising a plurality of rows and a plurality of columns of pixel circuits, wherein the pixel circuit comprises a light emitting element, a driving circuit, a first energy storage circuit, a second energy storage circuit, a writing-in control circuit and a first control circuit;

• wherein
• a first terminal of the first energy storage circuit is electrically connected to a control terminal of the driving circuit, and a second terminal of the first energy storage circuit is electrically connected to a first terminal of the driving circuit;
• the first energy storage circuit is used to store electrical energy;
• a first terminal of the second energy storage circuit is electrically connected to a control terminal of the driving circuit;
• the second energy storage circuit is used to store electric energy;
• the writing-in control circuit is electrically connected to a first writing-in control terminal, a writing-in terminal and a second terminal of the second energy storage circuit respectively, is configured to control the connection or disconnection between the writing-in terminal and the second terminal of the second energy storage circuit under the control of the first writing-in control signal provided by the first writing-in control terminal;
• the first control circuit is electrically connected to a first control terminal, a power supply voltage terminal and a first terminal of the driving circuit, and is used to control the connection or disconnection between the power supply voltage terminal and the first terminal of the driving circuit under the control of a first control signal provided by the first control terminal;
• a second terminal of the driving circuit is electrically connected to the light emitting element, and the driving circuit is configured to generate a driving current for driving the light emitting element under the control of a potential of the control terminal of the driving circuit;
• wherein the pixel circuit includes no additional transistor configured to electrically connect the control terminal and the second terminal of the driving circuit.

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

• wherein
• a first terminal of the first energy storage circuit is electrically connected to a control terminal of the driving circuit, and a second terminal of the first energy storage circuit is electrically connected to a first terminal of the driving circuit;
• the first energy storage circuit is used to store electrical energy;
• a first terminal of the second energy storage circuit is electrically connected to a control terminal of the driving circuit;
• the second energy storage circuit is used to store electric energy;
• the writing-in control circuit is electrically connected to a first writing-in control terminal, a writing-in terminal and a second terminal of the second energy storage circuit respectively, is configured to control the connection or disconnection between the writing-in terminal and the second terminal of the second energy storage circuit under the control of the first writing-in control signal provided by the first writing-in control terminal;
• the first control circuit is electrically connected to a first control terminal, a power supply voltage terminal and a first terminal of the driving circuit, and is used to control the connection or disconnection between the power supply voltage terminal and the first terminal of the driving circuit under the control of a first control signal provided by the first control terminal;
• a second terminal of the driving circuit is electrically connected to the light emitting element, and the driving circuit is configured to generate a driving current for driving the light emitting element under the control of a potential of the control terminal of the driving circuit;
• wherein the pixel circuit includes no additional transistor configured to electrically connect the control terminal and the second terminal of the driving circuit;
• wherein the driving method comprises:
• controlling, by the writing-in control circuit, to connect or disconnect the writing-in terminal and the second terminal of the second energy storage circuit under the control of the first writing-in control signal;
• controlling, by the first control circuit, to connect or disconnect the power supply voltage terminal and the first terminal of the driving circuit under the control of the first control signal;
• generating, by the driving circuit, a driving current for driving the light emitting element under the control of a potential of the control terminal of the driving circuit.