Pixel circuit including a compensation control circuit, pixel driving method and display device

A pixel driving method for a pixel circuit, wherein the pixel circuit comprises:

• a light-emitting element, a driving circuit, a first light-emission control circuit, a first initialization circuit, an energy storage circuit, a compensation control circuit and a data written-in circuit;
• wherein
• the first light-emission control circuit is electrically connected to a light-emission control line, a first terminal of the driving circuit and the light-emitting element, and configured to control the first terminal of the driving circuit to be electrically connected to the light-emitting element under control of a light-emission control signal from the light-emission control line;
• the first initialization circuit is electrically connected to a reset control line, a first initial voltage terminal and a control terminal of the driving circuit, and configured to write a first initial voltage from the first initial voltage terminal into the control terminal of the driving circuit under control of a reset control signal from the reset control line;
• a first terminal of the energy storage circuit is electrically connected to the control terminal of the driving circuit, a second terminal of the energy storage circuit is electrically connected to a first electrode of the light-emitting element, and the energy storage circuit is configured to store electric energy;
• the data written-in circuit is electrically connected to a written-in control line, a data line and the first terminal of the driving circuit, and configured to write a data voltage from the data line into the first terminal of the driving circuit under control of a written-in control signal from the written-in control line;
• the compensation control circuit is electrically connected to a compensation control line, the control terminal of the driving circuit and a second terminal of the driving circuit, and configured to control the control terminal of the driving circuit to be electrically connected to the second terminal of the driving circuit under control of a compensation control signal from the compensation control line;
• wherein a display frame comprises a first initialization stage and a compensation stage arranged one after another, and the pixel driving method comprises:
• within the first initialization stage, writing, by the first initialization circuit, a first initial voltage from the first initial voltage terminal into the control terminal of the driving circuit under control of a reset control signal;
• within a data written-in time period, writing, by the data written-in circuit, a data voltage from the data line into the first terminal of the driving circuit under control of a written-in control signal;
• within the compensation stage, controlling, by the compensation control circuit, the control terminal of the driving circuit to be electrically connected to the second terminal of the driving circuit under control of a compensation control signal;
• at the beginning of the data written-in time period, controlling, by the driving circuit, the first terminal of the driving circuit to be electrically connected to the second terminal of the driving circuit under control of a potential at the control terminal of the driving circuit, and charging the energy storage circuit via the data voltage to change the potential at the control terminal of the driving circuit until the first terminal of the driving circuit is electrically disconnected from the second terminal of the driving circuit;
• wherein the data written-in time period is same as the compensation stage, or the data written-in time period is comprised in the compensation stage;
• wherein the pixel circuit comprises a second light-emission control circuit, a display period further comprises a first light-emission stage arranged after the compensation stage, and the pixel driving method further comprises:
• within the first light-emission stage, controlling, by the first light-emission control circuit, the first terminal of the driving circuit to be electrically connected to the light-emitting element under control of a light-emission control signal, controlling, by the second light-emission control circuit, a first voltage terminal to be electrically connected to the second terminal of the driving circuit under control of the light-emission control signal, and driving, by the driving circuit, the light-emitting element to emit light;
• wherein the pixel circuit further comprises a second initialization circuit, and the pixel driving method further comprises:
• within the compensation stage, writing, by the second initialization circuit, a second initial voltage from a second initial voltage terminal into the first electrode of the light-emitting element under control of an initial control signal, to control the light-emitting element not to emit light, reset a potential at the first electrode of the light-emitting element, and release residual charges at the first electrode of the light-emitting element;
• wherein the display frame is a refresh frame, the display period further comprises a maintaining frame, the maintaining frame comprises a second initialization stage and a second light-emission stage arranged one after another, and the pixel driving method further comprises:
• within the second initialization stage, writing, by the second initialization circuit, the second initial voltage from the second initial voltage terminal into the first electrode of the light-emitting element under control of the reset control signal, to control the light-emitting element not to emit light, reset the potential at the first electrode of the light-emitting element, and release residual charges at the first electrode of the light-emitting element;
• within the second light-emission stage, controlling, by the first light-emission control circuit, the first terminal of the driving circuit to be electrically connected to the light-emitting element under control of the light-emission control signal, controlling, by the second light-emission control circuit, the first voltage terminal to be electrically connected to the second terminal of the driving circuit under control of the light-emission control signal, and driving, by the driving circuit, the light-emitting element to emit light.