Speaker devices
US8139794B2 · kind B2 · utility
6Cited by
3References
33Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 13, 2009 |
| Grant date | Mar 20, 2012 |
| Priority date | — |
| Expiry date | Aug 8, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49005
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A speaker device may include a substrate, a membrane above the substrate, and an electrode above the membrane, a plurality of first supporting members, and a plurality of second supporting members. The second chamber is enclosed between the membrane and the substrate, and the first chamber is enclosed between the electrode and the membrane. The first supporting members are provided in the first chamber space and may space the membrane apart from the electrode. The second supporting members are provided in the second chamber space and may space the membrane apart from the substrate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.