Red-emitting phosphors and associated devices
US10563121B2 · kind B2 · utility
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13References
17Claims
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Key dates
| Filing date | Jun 2, 2016 |
| Grant date | Feb 18, 2020 |
| Priority date | — |
| Expiry date | Jun 4, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01L2924/181
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A method includes obtaining particles of a phosphor precursor of formula Ax[MFy]:Mn4+, reducing sizes of the particles of the phosphor precursor by wet milling the particles and annealing the particles that are wet milled by contacting the particles with a fluorine-containing oxidizing agent. Additionally, a manganese doped complex fluoride phosphor prepared by this method is provided. A lighting apparatus and backlight device that include manganese-doped phosphor prepared by this method also are provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.