Vibration system, speaker apparatus and video displaying apparatus
US11789489B2 · kind B2 · utility
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10Claims
0Family size
Assignee
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Key dates
| Filing date | Oct 22, 2018 |
| Grant date | Oct 17, 2023 |
| Priority date | — |
| Expiry date | Sep 8, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2499/15
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A vibration system includes a vibration plate and an edge portion disposed around the vibration plate. The vibration plate has a first region and a second region that have shapes asymmetrical with each other. The vibration plate is configured such that a weight difference between the first region and the second region is equal to or smaller than a threshold value and besides stiffness at the edge portion is substantially uniform.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.