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

Claim 9:
10. The display apparatus according to claim 9, wherein the set voltage follower circuit includes a first operational amplifier and a second storage capacitor, wherein
a non-inverting input terminal of the first operational amplifier is electrically connected to the output terminal of the set voltage generation unit, an inverting input terminal of the first operational amplifier is electrically connected to an output terminal of the first operational amplifier, and the output terminal of the first operational amplifier is used as the output terminal of the set voltage follower circuit; and
a first electrode of the second storage capacitor is electrically connected to the non-inverting input terminal of the first operational amplifier, and a second electrode of the second storage capacitor is electrically connected to a second voltage signal terminal; and
wherein the one or more current detection circuits each include:
a second operational amplifier, wherein a non-inverting input terminal of the second operational amplifier is electrically connected to the output terminal of the set voltage generation circuit, an inverting input terminal of the second operational amplifier is coupled to at least one of the one or more sensing signal lines, so that the output terminal of the set voltage generation circuit is electrically connected to a sensing signal terminal of at least one sub-pixel through the current detection circuit;
an integrating capacitor, wherein the integrating capacitor is coupled between the inverting input terminal of the second operational amplifier and an output terminal of the second operational amplifier; and
a first switch, wherein the first switch is coupled between the inverting input terminal of the second operational amplifier and the output terminal of the second operational amplifier, and the first switch and the integrating capacitor are connected in parallel.