Light guiding plate and backlight module employing the same
US7325958B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Sep 26, 2006 |
| Grant date | Feb 5, 2008 |
| Priority date | — |
| Expiry date | Sep 26, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/0043
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A light guiding plate (120) includes a light incident surface (121), a light emitting surface (122) adjacent to the light incident surface, and a bottom surface (123) opposite to the light emitting surface. The light incident surface includes at least one row of first grooves (1211) and at least one row of second grooves (1212). The first grooves is configured for increasing a range of incident angles in which light beams enter the light guiding plate via the light incident surface and thereby improving a brightness of the light guiding plate, and the second grooves is configured for complementing the functions of the first grooves thereby improving a uniformity of light output by the light guiding plate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.