Slim acoustic transducer and image display apparatus having the same
US10681467B2 · kind B2 · utility
0Cited by
5References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 10, 2017 |
| Grant date | Jun 9, 2020 |
| Priority date | — |
| Expiry date | Feb 22, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2499/15
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present disclosure relates to a slim acoustic transducer having a thin thickness a low-frequency reproduction capability and a sound pressure level in the entire frequency band of which may not be lowered. A slim acoustic transducer includes a diaphragm; a voice coil disposed at a peripheral portion of the diaphragm; and a permanent magnet disposed around the voice coil and configured to apply a magnetic field to the voice coil, wherein a maximum amplitude of the diaphragm is less than a thickness of the permanent magnet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.