Patent ID: 11919039
Assignee: BOE TECHNOLOGY GROUP CO., LTD.
Field: Chemical engineering (Chemistry)
Classification: CPC B | IPC B

Claim 0:
1. An acoustic transduction unit, comprising: a base substrate, a first electrode, a support pattern, a vibrating diaphragm pattern and a second electrode, wherein the first electrode is on the base substrate; the support pattern is on a side of the first electrode distal to the base substrate; a vibrating cavity is surrounded by the support pattern, the first electrode and the vibrating diaphragm pattern; the vibrating diaphragm pattern is on a side of the support pattern distal to the first electrode, and is configured to vibrate in the vibrating cavity, and the second electrode is on a side of the vibrating diaphragm pattern distal to the first electrode, and is opposite to the first electrode;
wherein the acoustic transduction unit further comprises:
a first dielectric pattern at a bottom of the vibrating cavity and comprising a first apex at the bottom of the vibrating cavity; wherein a thickness of the first dielectric pattern gradually increases from the first vertex to an edge of the first dielectric pattern; and/or,
a second dielectric pattern at a top of the vibrating cavity and comprising a second apex at the top of the vibrating cavity; wherein a thickness of the second dielectric pattern gradually increases from the second vertex to an edge of the second dielectric pattern.