Acoustic transducers having non-circular perimetral release holes
US11477555B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 27, 2020 |
| Grant date | Oct 18, 2022 |
| Priority date | — |
| Expiry date | Dec 17, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2201/003
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An acoustic transducer comprises a transducer substrate having an aperture defined therethrough. At least one diaphragm is disposed on the transducer substrate over the aperture. A back plate is disposed on the transducer substrate and axially spaced apart from the at least one diaphragm. A perimetral support structure is disposed circumferentially between the at least one diaphragm and the back plate at a radially outer perimeter of the back plate. A plurality of perimetral release holes are defined circumferentially through at least one of the at least one diaphragm or the back plate proximate to and radially inwards of the perimetral support structure, at least a portion of the plurality of perimetral release holes defining a non-circular shape.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.