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

Claim 16:
17. A pixel driving method, applied to the pixel driving circuit according to claim 1; wherein
the pixel driving circuit includes the energy storage sub-circuit, the reset sub-circuit, the compensation sub-circuit, a light-emitting control sub-circuit, the driving sub-circuit, a data writing sub-circuit, a reference voltage sub-circuit and the current leakage suppression sub-circuit; the data writing sub-circuit is coupled to the first node, the second scan timing signal terminal and a data signal terminal; 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 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 pixel driving method comprises a frame period including a reset phase, an input and compensation phase and a light-emitting phase; wherein
in the reset phase:
the reference voltage sub-circuit transmits a reference voltage signal received at the reference voltage signal terminal to the first node in response to the first scan timing signal received at the first scan timing signal terminal or the second scan timing signal received at the second scan timing signal terminal; and
the reset sub-circuit transmits, in response to the first scan timing signal, the initial signal received at the initial signal terminal to the second node to reset the second node;
in the input and compensation phase:
the data writing sub-circuit transmits a data signal received at the data signal terminal to the first node in response to the second scan timing signal;
the compensation sub-circuit causes the driving sub-circuit to be in the self-saturation state under control of the second scan timing signal;
the driving sub-circuit is in the self-saturation state due to at least the action of the compensation sub-circuit, generates the compensation signal according to the first voltage signal received at the first voltage signal terminal, and transmits the compensation signal to the second node; and
the energy storage sub-circuit is charged due to the actions of the voltages of the first node and the second node;
in the light-emitting phase:
the reference voltage sub-circuit transmits the reference voltage signal to the first node;
the energy storage sub-circuit couples the voltage of the second node according to the voltage of the first node, and maintains the coupled voltage of the second node;
the driving sub-circuit generates the driving signal due to the coupling action of the energy storage sub-circuit, and transmits the driving signal to the third node;
the light-emitting control sub-circuit transmits the driving signal from the driving sub-circuit to the light-emitting device in response to a light-emitting timing signal, so as to drive the light-emitting device to emit light; and
the current leakage suppression sub-circuit suppresses the current leakage of the energy storage sub-circuit.