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

Claim 17:
18. The method for manufacturing the acoustic transduction unit according to claim 15, wherein the step of forming the support pattern, the vibrating diaphragm pattern, and the second dielectric pattern comprises steps of:
forming a sacrificial pattern on a side of the first electrode distal to the base substrate; wherein an accommodating groove for accommodating a second dielectric pattern to be formed subsequently is formed on a side of the sacrificial pattern distal to the base substrate;
forming a support pattern on a side surface of the sacrificial pattern, forming a second dielectric pattern and a vibrating diaphragm pattern on a side of the sacrificial pattern distal to the first electrode, and forming the vibrating diaphragm pattern on a side of the support pattern distal to the first electrode, wherein the vibrating diaphragm pattern is located on a side of the second dielectric pattern distal to the first electrode, and release holes are formed on the vibrating diaphragm pattern;
removing the sacrificial pattern through the release holes, to obtain the vibrating cavity; and
forming filling patterns for filling the release holes.