Backlight module and brightness enhancement film thereof
US7290919B2 · kind B2 · utility
127Cited by
3References
19Claims
0Family size
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Key dates
| Filing date | Apr 21, 2006 |
| Grant date | Nov 6, 2007 |
| Priority date | — |
| Expiry date | Apr 21, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B3/0056
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A backlight module includes a light source, a light guide plate for guiding light from the light source, and a brightness enhancement film having a plurality of spherical surface microlenses for gathering light from the light guide plate. In contrast to traditional prism sheets, the brightness enhancement film having the plurality of spherical surface microlenses have better efficiency of light-gathering.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.