Brightness-enhancing film
US7806547B2 · kind B2 · utility
27Cited by
138References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 14, 2009 |
| Grant date | Oct 5, 2010 |
| Priority date | — |
| Expiry date | Jan 14, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133607
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present embodiments provide systems, backlights, films, apparatuses and methods of generating back lighting. Some embodiments provide backlights that include a cavity with at least one interior light source and diffusely reflecting wall of high reflectivity, a top surface with multiple intermittently spaced holes allowing exit of light generated by the light sources, and external collimators extending from each of the holes such that the external collimators spatially expand and angularly narrow the light exiting the holes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.