Phosphor plate and light emitting device using the same
US11807791B2 · kind B2 · utility
2Cited by
3References
7Claims
0Family size
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Key dates
| Filing date | Jun 22, 2020 |
| Grant date | Nov 7, 2023 |
| Priority date | — |
| Expiry date | Dec 1, 2040 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E10/52
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A phosphor plate including a base material, and a plate-shaped composite including phosphors dispersed in the base material, in which a main component of the base material is alumina, the phosphor includes an α-type sialon phosphor, and L* value satisfies 73.5 or more and 85.0 or less, a* value satisfies 4.4 or more and 8.0 or less, and b* value satisfies 10.8 or more and 13.0 or less in L*a*b* color coordinates of the phosphor plate in a case of being measured in accordance with JIS Z 8781-4.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.