Patent ID: 11967285
Assignee: BOE TECHNOLOGY GROUP CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 0:
1. A display panel, comprising:
a plurality of sub-pixels, wherein each of the plurality of sub-pixels includes a pixel driving circuit and a first light-emitting device, the pixel driving circuit includes at least a driving transistor and a sensing transistor, a first electrode of the driving transistor is electrically connected to a power supply voltage signal terminal, a first electrode of the sensing transistor is electrically connected to a sensing signal terminal, and a second electrode of the driving transistor is electrically connected to a second electrode of the sensing transistor and a first electrode of the first light-emitting device; and
at least one set voltage generation circuit, wherein an output terminal of a set voltage generation circuit is electrically connected to a sensing signal terminal of at least one sub-pixel, and the set voltage generation circuit is configured to generate a set voltage signal, and transmit the set voltage signal to a sensing transistor of the at least one sub-pixel and a second electrode of a driving transistor of the at least one sub-pixel in a sensing period, so that an operating point of the driving transistor of the at least one sub-pixel maintains consistent in the sensing period and a driving period;
wherein a voltage of the set voltage signal is substantially equal to a voltage of the second electrode of the driving transistor of the at least one sub-pixel in the driving period;
wherein the set voltage generation circuit includes a first transistor, a first storage capacitor, and a second light-emitting device, wherein
a control electrode of the first transistor is configured to receive a control voltage signal, a first electrode of the first transistor is electrically connected to the power supply voltage signal terminal, and a second electrode of the first transistor is electrically connected to a first electrode of the second light-emitting device;
a first electrode of the first storage capacitor is electrically connected to the control electrode of the first transistor, and a second electrode of the first storage capacitor is electrically connected to the second electrode of the first transistor;
a second electrode of the second light-emitting device is electrically connected to a first voltage signal terminal; and
the first electrode of the second light-emitting device is used as the output terminal of the set voltage generation circuit, and a voltage signal of the first electrode of the second light-emitting device is the set voltage signal.