Patent ID: 11935470
Assignee: CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 14:
15. A driving method for driving a pixel circuit,
wherein the pixel circuit comprises a driving sub-circuit, a data writing sub-circuit, a first light-emitting control sub-circuit, a second light-emitting control sub-circuit, a compensation sub-circuit, and a first reset sub-circuit, and is configured to generate a driving current to control a light-emitting element to emit light,
the driving sub-circuit comprises a control terminal, a first terminal, and a second terminal;
the data writing sub-circuit is electrically connected to the first terminal of the driving sub-circuit and a data signal terminal, and is configured to write a data signal of the data signal terminal into the first terminal of the driving sub-circuit in response to a signal of a first scan signal terminal;
the compensation sub-circuit is electrically connected to the second terminal of the driving sub-circuit and the control terminal of the driving sub-circuit, and is configured to perform threshold compensation on the driving sub-circuit in response to a signal of a compensation control signal terminal;
the first light-emitting control sub-circuit is electrically connected to the first terminal of the driving sub-circuit and a first voltage terminal, and is configured to achieve a connection between the driving sub-circuit and the first voltage terminal to be turned on or off in response to a signal of a light-emitting signal control terminal;
the second light-emitting control sub-circuit is electrically connected to the second terminal of the driving sub-circuit and a first electrode of the light-emitting element, and is configured to achieve a connection between the driving sub-circuit and the light-emitting element to be turned on or off in response to the signal of the light-emitting signal control terminal; and
the first reset sub-circuit is electrically connected to the second terminal of the driving sub-circuit and a second voltage terminal, and is configured to write a signal of the second voltage terminal into the second terminal of the driving sub-circuit in response to a signal of a second scan signal terminal;
wherein the first reset sub-circuit comprises a first transistor, the compensation sub-circuit comprises a second transistor, the first transistor and the second transistor are both oxide transistors, and an active layer type of the second transistor is different from an active layer type of a transistor comprised in at least one selected from a group consisting of the driving sub-circuit, the data writing sub-circuit, the first light-emitting control sub-circuit, and the second light-emitting control sub-circuit,
wherein a working process of the pixel circuit in one display frame comprises an initialization phase, a data writing phase, and a light-emitting phase,
the driving method comprises:
in the initialization phase, controlling a level of the signal of the first scan signal terminal to be a first level, controlling a level of the signal of the second scan signal terminal to be the first level, controlling a level of the signal of the compensation control signal terminal to be the first level, and controlling a level of the signal of the light-emitting signal control terminal to be the first level;
in the data writing phase, controlling the level of the signal of the first scan signal terminal to be a second level, controlling the level of the signal of the second scan signal terminal to be the second level, controlling the level of the signal of the compensation control signal terminal to be the first level, and controlling the level of the signal of the light-emitting signal control terminal to be the first level;
in the light-emitting phase, controlling the level of the signal of the first scan signal terminal to be the first level, controlling the level of the signal of the second scan signal terminal to be the second level, controlling the level of the signal of the compensation control signal terminal to be the second level, controlling the level of the signal of the light-emitting signal control terminal to be the second level.