Backlight button assemblage
US7253369B2 · kind B2 · utility
17Cited by
6References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 23, 2005 |
| Grant date | Aug 7, 2007 |
| Priority date | — |
| Expiry date | Nov 23, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2219/0622
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A backlight button assemblage includes an opaque button, a light-guiding element, and a light-emitting element. The light-emitting element is disposed under the button and light emitted from the light-emitting element is guided to the front side of the button via the light-guiding element surrounding the button. Light can therefore be evenly distributed over the light-guiding element, and uniformity of light achieved, so that partial dazzling spots are avoided, the quantity of light-emitting elements is reduced, and fabrication costs are saved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.