Electroacoustic transducer, process of producing the same and electroacoustic transducing device using the same
US6870937B1 · kind B1 · utility
18Cited by
3References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 20, 2000 |
| Grant date | Mar 22, 2005 |
| Priority date | — |
| Expiry date | May 8, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R19/005
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An electroacoustic transducer comprises: a lower electrode; an upper electrode including an oscillation portion and a support portion for supporting the oscillation portion at least at a part of a periphery of the oscillation portion; and an insulating layer for insulating the lower electrode from the upper electrode, wherein the upper electrode has an up and down in the oscillation portion and/or in the support portion to provide a cavity between the upper electrode and the lower electrode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.