Patent ID: 11875747
Assignee: BOE TECHNOLOGY GROUP CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 0:
1. A pixel driving circuit, comprising: an energy storage sub-circuit, a reset sub-circuit, a compensation sub-circuit, a driving sub-circuit and a current leakage suppression sub-circuit; wherein
the energy storage sub-circuit is coupled to a first node and a second node;
the reset sub-circuit is coupled to the second node, a first scan timing signal terminal and an initial signal terminal;
the compensation sub-circuit is coupled to the second node, a third node and a second scan timing signal terminal;
the driving sub-circuit is coupled to the second node, the third node and a first voltage signal terminal;
the current leakage suppression sub-circuit is coupled to the energy storage sub-circuit, the reset sub-circuit and the compensation sub-circuit;
the reset sub-circuit is configured to transmit, in response to a first scan timing signal received at the first scan timing signal terminal, an initial signal received at the initial signal terminal to the second node to reset the second node;
the compensation sub-circuit is configured to cause the driving sub-circuit to be in a self-saturation state in response to a second scan timing signal received at the second scan timing signal terminal;
the driving sub-circuit is configured to: be in the self-saturation state due to at least an action of the compensation sub-circuit; generate a compensation signal according to a first voltage signal received at the first voltage signal terminal; and transmit the compensation signal to the second node;
the energy storage sub-circuit is configured to: be charged due to actions of voltages of the first node and the second node; couple the voltage of the second node according to the voltage of the first node; and maintain a coupled voltage of the second node;
the driving sub-circuit is further configured to: generate a driving signal due to a coupling action of the energy storage sub-circuit; and transmit the driving signal to the third node;
the current leakage suppression sub-circuit is configured to suppress current leakage of the energy storage sub-circuit in a process of generating and transmitting the driving signal by the driving sub-circuit; and
the pixel driving circuit further including: a reference voltage sub-circuit, a data writing sub-circuit and a light-emitting control sub-circuit; wherein
the reference voltage sub-circuit is coupled to the first node, the first scan timing signal terminal and a reference voltage signal terminal, or the reference voltage sub-circuit is coupled to the first node, the second scan timing signal terminal and the reference voltage signal terminal;
the reference voltage sub-circuit is configured to transmit a reference voltage signal received at the reference voltage signal terminal to the first node in response to the first scan timing signal or the second scan timing signal;
the data writing sub-circuit is coupled to the first node, the second scan timing signal terminal and a data signal terminal; the data writing sub-circuit is configured to transmit a data signal received at the data signal terminal to the first node in response to the second scan timing signal;
the light-emitting control sub-circuit is coupled to the third node and a light-emitting timing signal terminal, and is configure to be coupled to a light-emitting device; the light-emitting control sub-circuit is configured to transmit the driving signal from the driving sub-circuit to the light-emitting device in response to a light-emitting timing signal received at the light-emitting timing signal terminal, so as to drive the light-emitting device to emit light.