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US 6,776,927 B2Granted
Oxynitride phosphor activated by a rare earth element, and sialon type phosphor
AssigneeNational Institute for Materials Science
InventorsMamoru Mitomo, Tadashi Endo, Kyouta Ueda, Masakazu Komatsu
Life of this patent
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Abstract
An oxynitride phosphor activated by a rare earth element, represented by the formula CaxSi12−(m+n)Al(m+n)OnN16−n: EuyDyz, wherein stabilizing metal (Ca) is substituted partially by Eu or Eu and Dy where 0.3<x<1.5, 0.01<y<0.7, 0≦z<0.1, 0.6<m<3.0 and 0<n<1.5.
Claims1
An oxynitride phosphor activated by a rare earth element, represented by the formula CaxSi12−(m+n)Al(m+n)OnN16−n:EuyDyz, wherein stabilizing metal (Ca) is substituted partially by Eu or Eu and Dy where 0.3<x−Ty+z−<1.5, 0.01<y<0.7, 0<z<0.1, 0.6<m<3.0 and 0≦n<1.5.
Dependencies are inferred from the claim text.