Light emitting device, planar light source, and display device
US8648358B2 · kind B2 · utility
1Cited by
4References
19Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 18, 2010 |
| Grant date | Feb 11, 2014 |
| Priority date | — |
| Expiry date | Mar 3, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10H20/855
- WIPO fieldSemiconductors
- WIPO sectorElectrical engineering
Abstract
A mortar-shaped or funnel-shaped light emitting device (50) includes: a substrate (20); at least one LED chip (25) die-bonded to the substrate (20); and a wavelength converting portion (40) covering said at least one LED chip (25); at least four planes uprising from the substrate (20); and a lens having a top surface (10a) facing the substrate (20), the four planes being positioned in four directions, respectively, in such a manner as to surround said at least one LED chip (25), and the top surface (10a) having a concave portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.