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

Claim 13:
14. 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 is disposed on a side, away from the substrate, of the thin-film transistor;
wherein the detection pixel unit further comprises: a second organic layer, a second passivation layer, a bias electrode and a third passivation layer that are sequentially stacked on the photoelectric conversion part;
wherein the bias electrode is electrically connected to the photoelectric conversion part by means of the second via hole, and the second via hole penetrates through the second organic layer and the second passivation layer.