Hollow backlight with structured films
US8848132B2 · kind B2 · utility
60Cited by
98References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 6, 2009 |
| Grant date | Sep 30, 2014 |
| Priority date | — |
| Expiry date | May 30, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/0055
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A backlight (120) that includes a front reflector (130) and a back reflector (160) that form a hollow light recycling cavity (162) having an output surface (164) is disclosed. The front reflector includes at least four directional recycling films (132). The backlight also includes a semi-specular diffuser disposed between the front reflector and the back reflector, and one or more light sources (166) disposed to emit light into the light recycling cavity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.