Patent ID: 11961477
Assignee: WUHAN TIANMA MICROELECTRONICS CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 17:
18. A driving method of a display panel, comprising:
providing a display panel including a driving transistor, a data writing unit, a compensation unit, a light-emitting controller, a bias unit, and a light-emitting component, wherein:
the driving transistor is configured to provide a driving current in a light-emitting stage, wherein a gate of the driving transistor is connected to a first node, a first end of the driving transistor is connected to a second node, and a second end of the driving transistor is connected to a third node,
the light-emitting controller is connected in series between the driving transistor and the light-emitting component, wherein a control terminal of the light-emitting controller is connected to a first output terminal of a light-emitting control circuit, and
a first electrode of the bias unit is electrically connected to the third node and a second electrode of the bias unit is electrically connected to a second output terminal, of the light-emitting control circuit, multiplexed as a signal input terminal of the bias unit, wherein the light-emitting control circuit includes a plurality of cascaded light-emitting control circuit units, and the first output terminal of the light-emitting control circuit and the second output terminal of the light-emitting control circuit correspond to a same output terminal of a light-emitting control circuit unit at a same level or different output terminals of light-emitting control circuit units at different levels;

in a first bias stage of a driving cycle of the display panel, in response to a first control signal, transmitting, by the bias unit, a first signal outputted by the light-emitting control circuit to the third node to adjust a bias state of the driving transistor;
in a data writing stage of the driving cycle of the display panel, providing, by the data writing unit, a data signal for the driving transistor, and detecting and self-compensating, by the compensation unit, a deviation of a threshold voltage of the driving transistor; and
in the light-emitting stage of the driving cycle of the display panel, in response to the driving current, emitting light by the light-emitting component.