Patent ID: 11902761
Assignee: BOE TECHNOLOGY GROUP CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 4:
5. The sound producing device of claim 4, wherein the piezoelectric transducer array comprises a plurality of piezoelectric sensors;
the piezoelectric transducer array comprises a first substrate, an elastic film layer disposed on a side of the first substrate, a first electrode disposed on a side of the elastic film layer away from the first substrate, a piezoelectric film disposed on a side of the first electrode away from the first substrate, and a second electrode disposed on a side of the piezoelectric film away from the first substrate, wherein
the first electrode comprises a plurality of sub-electrodes, the sub-electrodes are distributed in an array and are disposed on a side of the elastic film layer away from the first substrate, and each sub-electrode corresponds to one piezoelectric sensor;
the first substrate is provided with a plurality of openings, the openings correspond to the sub-electrodes one to one, and an orthographic projection of each sub-electrode on the first substrate falls within an orthographic projection of the opening corresponding to the sub-electrode on the first substrate.