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

Claim 16:
17. The method for manufacturing the acoustic transduction unit according to claim 16, wherein the step of forming a support pattern and a vibrating diaphragm pattern on a side of the first electrode distal to the base substrate comprises steps of:
forming a sacrificial pattern on a side of the first dielectric pattern distal to the base substrate;
forming a support and vibrating diaphragm material film on a side of the first electrode distal to the base substrate, wherein the support and vibrating diaphragm material film covers a side surface of the sacrificial pattern and the surface of the sacrificial pattern distal to the base substrate;
performing a patterning process on the support and vibrating diaphragm material film to obtain the support pattern and the vibrating diaphragm pattern, wherein the support pattern is located on the side surface of the sacrificial pattern; the vibrating diaphragm pattern is located on the surface of the sacrificial layer pattern distal to the base substrate, and is located on the surface of the support pattern distal to the base substrate; the vibrating diaphragm pattern is formed with release holes;
removing the sacrificial pattern through the release holes, to obtain the vibrating cavity; and
forming filling patterns for filling the release holes.