Backlight module
US7204634B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 19, 2005 |
| Grant date | Apr 17, 2007 |
| Priority date | — |
| Expiry date | Oct 19, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/0068
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A backlight module includes a light guide plate which has a first sidewall and two opposite second sidewalls extending transversely of the first sidewalls. The first and second sidewalls interconnect two opposite first and second faces. Alight source is disposed at one of the second sidewalls and projects light rays onto the first sidewall at an oblique angle. A first reflection layer is disposed over the first sidewall, and a second reflection layer is disposed over the second face. Total reflection of light into the light guide plate from the first sidewall and second face increases brightness and enhances evenness of brightness.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.