Plane light source apparatus
US6967698B2 · kind B2 · utility
46Cited by
4References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 20, 2002 |
| Grant date | Nov 22, 2005 |
| Priority date | — |
| Expiry date | Sep 29, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/0071
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
To make an efficiency of utilizing light with high efficiency in a plane light source apparatus used along with a liquid crystal display panel of a reflection type as a backlight, light f3 leaked from a rear face of a light guide plate 25 in a skewed direction, is incident on inside of a prism sheet 27 and reflected by a reflecting face 32. Light f3 reflected by the reflecting face 32, is reflected in a direction orthogonal to the prism sheet 27, passes the light guide plate 25 and is emitted from a light emitting face 30 of the light guide plate 25 in a direction orthogonally thereto.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.