Patent ID: 11893936
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: a driving sub-circuit, a signal writing sub-circuit, a compensation sub-circuit, a light-emitting control sub-circuit and an initialization sub-circuit, wherein
the signal writing sub-circuit is coupled to a data signal terminal, a first control signal terminal and the driving sub-circuit; the signal writing sub-circuit is configured to, under control of a signal from the first control signal terminal, write a voltage of the data signal terminal into the driving sub-circuit as a data voltage;
the light-emitting control sub-circuit is coupled to a light-emitting control terminal and the driving sub-circuit, and the light-emitting control sub-circuit is configured to be further coupled to a light-emitting device; the light-emitting control sub-circuit is further configured to, under control of a signal from the light-emitting control terminal, in conjunction with the driving sub-circuit, drive the light-emitting device to emit light;
the initialization sub-circuit is coupled to the data signal terminal, a second control signal terminal and the compensation sub-circuit; the initialization sub-circuit is configured to, under control of a signal from the second control signal terminal, transmit a voltage from the data signal terminal to the compensation sub-circuit as a reset voltage; and
the compensation sub-circuit is further coupled to the driving sub-circuit and the first control signal terminal; the compensation sub-circuit is configured to, under the control of the signal from the first control signal terminal, transmit the reset voltage from the initialization sub-circuit to the driving sub-circuit to reset the driving sub-circuit, wherein
the driving sub-circuit includes a driving transistor and a capacitor; a first end of the capacitor is coupled to a gate of the driving transistor and the compensation sub-circuit, and a second end of the capacitor is coupled to the signal writing sub-circuit; the signal writing sub-circuit is configured to, under the control of the signal from the first control signal terminal, write the voltage of the data signal terminal to the second end of the capacitor as the data voltage; and the compensation sub-circuit is configured to, under the control of the signal from the first control signal terminal, transmit the reset voltage from the initialization sub-circuit to the gate of the driving transistor to reset the gate of the driving transistor; and
the compensation sub-circuit is further coupled to a third control signal terminal; the compensation sub-circuit is further configured to, under control of signals from the first control signal terminal and the third control signal terminal, write a threshold voltage of the driving transistor to the first end of the capacitor.