Light-emitting device having semiconductor nanocrystal complexes
US7723744B2 · kind B2 · utility
60Cited by
1References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 7, 2007 |
| Grant date | May 25, 2010 |
| Priority date | — |
| Expiry date | Dec 7, 2027 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB82Y20/00
- WIPO fieldMicro-structural and nano-technology
- WIPO sectorChemistry
Abstract
Light-emitting devices are provided that incorporate one or more underlying LED chips or other light sources and a layer having one or more populations of nanoparticles disposed over the light source. The nanoparticles may absorb some light emitted by the underlying source, and re-emit light at a different level. By varying the type and relative concentration of nanoparticles, different emission spectra may be achieved. White light and specialty-color emission may be achieved. Devices also may include multiple LED chips, with nanoparticles disposed over one or more underlying chips in an array.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.