Sound producing cell and manufacturing method thereof
US11711653B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 14, 2022 |
| Grant date | Jul 25, 2023 |
| Priority date | — |
| Expiry date | Apr 14, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2201/003
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A sound producing cell includes a membrane and an actuating layer. The membrane includes a first membrane subpart and a second membrane subpart, wherein the first membrane subpart and the second membrane subpart are opposite to each other. The actuating layer is disposed on the first membrane subpart and the second membrane subpart. The first membrane subpart includes a first anchored edge which is fully or partially anchored, and edges of the first membrane subpart other than the first anchored edge are non-anchored. The second membrane subpart includes a second anchored edge which is fully or partially anchored, and edges of the second membrane subpart other than the second anchored edge are non-anchored.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.