Electrostatic electroacoustic transducers
US8559660B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 12, 2007 |
| Grant date | Oct 15, 2013 |
| Priority date | — |
| Expiry date | Apr 10, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R19/01
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An electrostatic electroacoustic device comprising a first electrode configured to receive an audio signal, a second electrode configured to receive the audio signal, a first electret between the first electrode and the second electrode, the first electret including at least one dielectric layer containing electrostatic charges, a second electret between the first electrode and the second electrode, the second electret including at least one dielectric layer containing electrostatic charges, and a conductive layer sandwiched between the first electret and the second electret, the conductive layer, the first electret and the second electret being capable of vibratory motion relative to the first electrode and the second electrode based on the audio signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.