Warm white light emitting apparatus and back light module comprising the same
US7847303B2 · kind B2 · utility
26Cited by
7References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 7, 2010 |
| Grant date | Dec 7, 2010 |
| Priority date | — |
| Expiry date | May 7, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10H20/8515
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A warm white light emitting apparatus includes a first light emitting diode (LED)-phosphor combination to generate a base light that is white or yellowish white and a second LED-phosphor combination to generate a Color Rendering Index (CRI) adjusting light. The base light and the CRI adjusting light together make a warm white light having a color temperature of 2500 to 4500K.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.