Diffusion plate used in direct-type backlight module
US7391571B2 · kind B2 · utility
10Cited by
2References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 15, 2005 |
| Grant date | Jun 24, 2008 |
| Priority date | — |
| Expiry date | Jan 15, 2026 |
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.