Light-emitting unit
US6717355B2 · kind B2 · utility
47Cited by
4References
37Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 27, 2001 |
| Grant date | Apr 6, 2004 |
| Priority date | — |
| Expiry date | Dec 7, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01L2924/01079
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A light-emitting device with an emission wavelength range of from 360 nm to 550 nm and a fluorescent material made of Ca—Al—Si—O—N oxynitride activated with Eu2+ are used so that a part of light emitted from the light-emitting device is emitted while the wavelength of the part of light is converted by the fluorescent material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.