Blue light-emitting phosphor and light-emitting device using the blue light-emitting phosphor
US9011718B2 · kind B2 · utility
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2References
2Claims
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Key dates
| Filing date | Sep 25, 2012 |
| Grant date | Apr 21, 2015 |
| Priority date | — |
| Expiry date | Mar 10, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10H20/8512
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The emission strength of a light released from a blue light-emitting phosphor having a merwinite crystal structure and an elemental formula of (Sr,Ca)3MgSi2O8 activated with Eu in which a molar ratio of Sr and Ca is in the range of 1:0.10 to 1:0.30 is stable in a wide temperature range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.