Phosphor, light-emitting apparatus including the same, and phosphor production method
US10032965B2 · kind B2 · utility
3Cited by
3References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 6, 2016 |
| Grant date | Jul 24, 2018 |
| Priority date | — |
| Expiry date | Sep 17, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01L2224/48257
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A phosphor, which is represented by the general formula containing M, Ce, Pr, Si, and N, is provided. M is at least one element selected from the group consisting of La, Y, Tb and Lu. A molar ratio of M is greater than 2.0 and smaller than 3.5. A molar ratio of Ce is greater than 0 and smaller than 1.0. A molar ratio of Pr is greater than 0 and smaller than 0.05. A molar ratio of N is greater than 10 and smaller than 12, under the condition that a molar ratio of Si is set to 6. The phosphor further contains 10 to 10,000 ppm of fluorine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.