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

Claim 0:
1. A pixel driving circuit, comprising:
a first power signal terminal and a second power signal terminal, wherein the first power signal terminal receives a first voltage signal, and the second power signal terminal receives a second voltage signal;
a driving transistor, 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;
a light-emitting component, connected in series between the driving transistor and the second power signal terminal and configured to emit light in response to the driving current;
a light-emitting controller, connected in series between the first power signal terminal 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 bias unit, with a first electrode electrically connected to the third node and a second electrode electrically connected to a second output terminal of the light-emitting control circuit multiplexed as a signal input terminal of the bias unit, and in response to a first control signal, the bias unit configured to transmit a first signal outputted by the light-emitting control circuit, to the third node to adjust a bias state of the driving transistor,
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.