Patent ID: 11961935
Assignee: BOE TECHNOLOGY GROUP CO., LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 11:
12. A detection base plate, comprising a substrate and multiple detection pixel units located on the substrate and arranged in an array;
each said detection pixel unit comprising: a thin-film transistor, a sacrificial layer and a photoelectric conversion layer disposed on the substrate; the sacrificial layer being located between the thin-film transistor and the photoelectric conversion part;
wherein the thin-film transistor comprises an active layer, a first electrode and a second electrode;
at least part of an orthographic projection of the active layer on the substrate is located within an orthographic projection of the sacrificial layer on the substrate;
the photoelectric conversion part is electrically connected to the sacrificial layer and the first electrode; and
in the detection base plate, the sacrificial layers of the detection pixel units are mutually independent;
wherein the photoelectric conversion part comprises a read electrode; and
in the detection pixel units, the sacrificial layers contact with the read electrode;
wherein the detection pixel unit further comprises a first passivation layer, a first organic layer and a first via hole, and the first via hole penetrates through the first passivation layer and the first organic layer to expose the first electrode; and
the sacrificial layer does not contact with the first electrode, and the read electrode contacts with the first electrode by means of the first via hole;
wherein the photoelectric conversion part further comprises a photoelectric conversion structure disposed on a side, away from the substrate, of the read electrode; and
an orthographic projection of the photoelectric conversion structure on the substrate does not overlap with the orthographic projection of the first via hole on the substrate.