Back light unit including a diffuser with various diffusion effects
US6861789B2 · kind B2 · utility
94Cited by
5References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 1, 2002 |
| Grant date | Mar 1, 2005 |
| Priority date | — |
| Expiry date | Feb 10, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133606
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A backlight unit is disposed beneath a display panel. The backlight unit includes an illumination means, which is used to provide a light source, and a diffuser positioned between the illumination means and the display panel, which is used to scatter the light generated by the illumination means. The diffuser, which is composed of liquid crystal particles and polymer, has a plurality of regions. The region thatis closer to the illumination means has greater scattering effect. In addition, the region with the greatest scattering effect has a shape corresponding to the illumination means.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.