Light guide unit for point light source, backlight assembly having the light guide unit and display device having the same
US7484875B2 · kind B2 · utility
10Cited by
3References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 14, 2006 |
| Grant date | Feb 3, 2009 |
| Priority date | — |
| Expiry date | Aug 14, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/0083
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A light guide unit for a point light source includes a light incident portion, a first reflecting portion and a second reflecting portion. The light emitted from the point light source enters to the light incident portion. The light incident portion includes an optical pattern diffusing an incident light corresponding to the point light source. The first reflecting portion reflects a first light of the incident light. The second reflecting portion roundly connects the first reflecting portion to the light incident portion and reflects a second light of the incident light.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.