Backlight unit and liquid crystal display device
US7165874B2 · kind B2 · utility
11Cited by
8References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 19, 2003 |
| Grant date | Jan 23, 2007 |
| Priority date | — |
| Expiry date | Apr 19, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/0053
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A backlight 10 includes a light source 13, a light guide plate 12 for introducing light emitted from the light source 13 from an incidence surface 12a provided on an end and for emitting the light from one surface, a diffusive reflector 15 provided such that the surface having a minute concavo-convex portion 15d faces the other surface of the light guide plate 12, and a light directivity control sheet 17 provided on the one surface of the light guide plate 12 such that the apexes 17c of pyramid-shaped objects 17b face the opposite side to the light guide plate 12.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.