Illumination device and liquid crystal display device
US8070346B2 · kind B2 · utility
57Cited by
15References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 7, 2007 |
| Grant date | Dec 6, 2011 |
| Priority date | — |
| Expiry date | Sep 7, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133616
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An illumination device which can be used as a front light or a back light by improving brightness unevenness in the vicinity of an LED without dropping entire brightness and a liquid crystal display device using the same. This illumination device 10 has a light source on a light entering face 27 of a light guide plate 20 and a light guide plate 20 in which prisms 25 for reflecting by polarization or emitting light out of the light guide plate 20 are formed on a light emission face or a light reflecting face thereof and a cylindrical lens 26 for orienting and magnifying light is formed on the other face.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.