Patent ID: 11861931
Assignee: BOE TECHNOLOGY GROUP CO., LTD.
Field: Chemical engineering (Chemistry)
Classification: CPC G  B  H | IPC B  G  H

Claim 18:
19. The manufacturing method according to claim 14, further comprising:
forming a piezoelectric sensing circuit at a side of the substrate, the piezoelectric sensing circuit comprising a plurality of thin film transistors;
forming an insulating layer at a side of the piezoelectric sensing circuit away from the substrate, and forming a via hole in the insulating layer, to electrically connect the piezoelectric sensing circuit to the plurality of sub-electrodes;
forming the active layer at a side of the insulating layer away from the piezoelectric sensing circuit;
forming the first electrode at a side of the active layer away from the insulating layer;
forming the piezoelectric layer at a side of the first electrode away from the active layer; and
forming the second electrode at a side of the piezoelectric layer away from the first electrode, and forming a protecting layer at a side of the second electrode away from the piezoelectric layer.