Patent ID: 11902740
Assignee: WUHAN MEMSONICS TECHNOLOGIES CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A piezoelectric microphone, comprising:
a wafer substrate comprising a cavity;
a plurality of cantilever beams with a piezoelectric deck structure;
a fixed column;
a plurality of flexible elastic members; and
a connecting section;
wherein:
the plurality of cantilever beams each comprises a fixed end and a free end suspended above the cavity;
the plurality of cantilever beams is of a structure in which one end is narrow and the other end is wide, and the fixed end is relatively narrow;
the fixed column is disposed at a center of a bottom surface of the cavity; fixed ends of the plurality of cantilever beams are all connected to a top surface of the fixed column;
a gap is provided between every two adjacent cantilever beams;
the plurality of flexible elastic members is connected to free ends of two adjacent cantilever beams to enable the cantilever beams to vibrate synchronously; and
the connecting section is disposed in one gap between every two adjacent cantilever beams for leading out an electric signal of the cantilever beams.