Patent ID: 11972734
Assignee: GUANGZHOU CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 0:
1. A pixel driving circuit, comprising:
a light emitting device connected between a first node and a second node;
a driving module, electrically connected to the light emitting device via the second node and electrically connected to a first voltage terminal via a third node, that is configured to generate a driving current based on a data signal to control the light emitting device to emit light;
a data writing module, electrically connected to the driving module via a fourth node, that is configured to output the data signal to the driving module;
a voltage conversion module, electrically connected to the first node, that is configured to change a potential of the first node from a first voltage to a second voltage at a first moment;
a first potential coupling module, electrically connected to the second node and the third node, that is configured to couple a potential of the third node when the potential of the first node changes from the first voltage to the second voltage; and
a second potential coupling module, electrically connected to the second node and the fourth node, that is configured to couple a potential of the fourth node when the potential of the first node changes from the first voltage to the second voltage;
wherein the driving module controls the light emitting device to start emitting light at a second moment later than the first moment, and the first voltage is greater than the second voltage.