Lighting apparatus including color stable red emitting phosphors and quantum dots
US10230022B2 · kind B2 · utility
1Cited by
22References
23Claims
0Family size
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Key dates
| Filing date | Dec 8, 2015 |
| Grant date | Mar 12, 2019 |
| Priority date | — |
| Expiry date | May 22, 2036 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S977/95
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A lighting apparatus is presented. The lighting apparatus includes a semiconductor light source, a color stable Mn4+ doped phosphor and a quantum dot material, each of the color stable Mn4+ doped phosphor and the quantum dot material being radiationally coupled to the semiconductor light source. A percentage intensity loss of the color stable Mn4+ doped phosphor after exposure to a light flux of at least 20 w/cm2 at a temperature of at least 50 degrees Celsius for at least 21 hours is ≤4%. A backlight device including the lighting apparatus is also presented.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.