Direct type backlight module of diffuser plate and its manufacturing method thereof
US7213933B2 · kind B2 · utility
11Cited by
2References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 6, 2004 |
| Grant date | May 8, 2007 |
| Priority date | — |
| Expiry date | Jul 7, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/0065
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A direct type backlight module with a diffuser plate and its manufacturing method for application to an LCD TV is provided. The diffuser plate has a plurality of columnar lenticular lens surfaces for scattering incident light to increase its light uniformity and reducing the quantity of light dispersant in the diffuser plate in the range of from 30% to 50% to increase light transmission ratio. Through the use of vertical or horizontal lenticular lenses of at least one columnar lenticular lens surface the diffusion degree in every direction is adjusted.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.