Patent ID: 11893936
Assignee: BOE TECHNOLOGY GROUP CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 11:
12. A method for driving the pixel driving circuit according to claim 1, the light-emitting control sub-circuit being further coupled to a reference signal terminal the driving sub-circuit being further coupled to a first voltage terminal; the method having a plurality of frame periods;
each frame period including an initialization phase, a scanning phase and a light-emitting phase; the initialization phase including a plurality of row initialization periods, the scanning phase including a plurality of row scanning periods, the light-emitting phase including a plurality of row light-emitting periods; the method comprising:
in each of the plurality of row initialization periods:
transmitting, by the initialization sub-circuit, the voltage of the data signal terminal to the compensation sub-circuit as the reset voltage under control of a turn-on signal from the second control signal terminal; and
transmitting, by the compensation sub-circuit, the received reset voltage to the gate of the driving transistor under control of a turn-on signal transmitted by the first control signal terminal, so as to reset the gate of the driving transistor;
in each of the plurality of row scanning periods:
writing, by the compensation sub-circuit, the threshold voltage of the driving transistor and a first voltage of the first voltage terminal into the first end of the capacitor under control of turn-on signals respectively transmitted by the first control signal terminal and the third control signal terminal; and
writing, by the signal writing sub-circuit, the voltage of the data signal terminal to the second end of the capacitor as the data voltage under the control of the turn-on signal transmitted by the first control signal terminal; and
in each of the plurality of row light-emitting periods:
writing, by the light-emitting control sub-circuit, a reference voltage of the reference signal terminal into the second end of the capacitor under control of a turn-on signal transmitted by the light-emitting control terminal, so as to write a voltage difference between the data voltage and the reference voltage to the first end of the capacitor due to an coupling action, and drive the light-emitting device to emit light.