Diffusion plate used in direct-type backlight module and method for making the same
US7414788B2 · kind B2 · utility
1Cited by
4References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 9, 2007 |
| Grant date | Aug 19, 2008 |
| Priority date | — |
| Expiry date | May 9, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S359/90
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present invention relates to a diffusion plate used in a direct-type backlight module and a method for making the same. At least one of the surfaces of the diffusion plate has a microstructure constituted by repeated undulation that can refract and diffuse the incident light beams that enter the diffusion plate. Therefore, the paths of the light beams after entering the diffusion plate are changed, which raises the luminance of the backlight module.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.