(Oxy)nitride phosphor powder and method of producing same
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United States of America Patent
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Nov 28, 2017
Issued Date -
N/A
app pub date -
Mar 28, 2014
filing date -
Mar 29, 2013
priority date (Note) -
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status (Latency Note)
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Abstract
An (oxy)nitride phosphor powder has a fluorescence peak wavelength of 610 to 625 nm and also has higher external quantum efficiency than the conventional one. The (oxy)nitride phosphor powder includes an α-type SiAlON and aluminum nitride, represented by the compositional formula: Cax1Eux2Si12−(y+z)Al(y+z)OzN16−z wherein x1, x2, y, z fulfill the following formulae: 1.60≦x1+x2≦2.90, 0.18≦x2/x1≦0.70, 4.0≦y≦6.5, 0.0≦z≦1.0. The powder can additionally contain Li in an amount of 50 to 10000 ppm. The content of the aluminum nitride may be more than 0 mass % to less than 33 mass %.
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International Classification(s)
- 2014 Application Filing Year
- C09K Class
- 2473 Applications Filed
- 1988 Patents Issued To-Date
- 80.39 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 1 Citation Count
- C09K Class
- 24.18 % this patent is cited more than
- 8 Age
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