Wavelength-converting film and light emitting device and display device using the same
US10497840B2 · kind B2 · utility
3Cited by
9References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 25, 2017 |
| Grant date | Dec 3, 2019 |
| Priority date | — |
| Expiry date | Oct 25, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01L2924/12041
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A wavelength-converting film and a light emitting device and a display device using the same are disclosed. The wavelength converting film comprises a fluoride phosphor powder with a Mn4+ as an activator, wherein the fluoride phosphor powder with the Mn4+ as the activator comprises a sheet-like crystal and has a chemical formula of A2[MF6]:Mn4+, wherein A is Li, Na, K, Rb, Cs, NH4, or a combination thereof, and M is Ge, Si, Sn, Ti, Zr, or a combination thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.