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US 8,773,012 B2Granted
Phosphor, method for preparing and using the same, light emitting device package, surface light source apparatus and lighting apparatus using red phosphor
AssigneeSamsung Electronics Co., Ltd.
InventorsJeong Ho Ryu, Chul Soo Yoon, Hyong Sik Won
Life of this patent
Estimating the term…
Abstract
Disclosed are a phosphor, a method for preparing and using the same, a light emitting device package, a surface light source apparatus, a lighting apparatus using the phosphor, and a display apparatus. The phosphor includes an inorganic compound represented by an empirical formula (Sr, M)2SiO4-xNy:Eu, where M is a metallic element, 0<x<4, and y=2x/3.
Claims18
A light emitting device package comprising:
- a light emitting device emitting excitation light;
- and
- a wavelength conversion unit absorbing the excitation light to emit visible light,
- where the wavelength conversion unit comprises at least a phosphor having an inorganic compound represented by an empirical formula (Sr, M)2SiO4-xNy:Eu, where M is at least one element selected from Be, Mg, Ca, Ba, Li, Na, K, Rb, and Cs, 0<x<4, and y=2x/3.
1 more element
A lighting apparatus comprising:
- a substrate;
- a plurality of light sources mounted on the substrate;
- and
- a diffusion sheet disposed above the plurality of light sources and uniformly diffusing light made incident from the light sources,
- where each of the light sources comprises:
- a light emitting device emitting excitation light;
- and
- a wavelength conversion unit absorbing the excitation light to emit visible light, where the wavelength conversion unit comprises at least a phosphor having an inorganic compound represented by an empirical formula (Sr, M)2SiO4-xNy:Eu, where M is at least one element selected from Be, Mg, Ca, Ba, Li, Na, K, Rb, and Cs, 0<x<4, and y=2x/3.
5 more elements
A display apparatus comprising
- a substrate;
- a plurality of light sources mounted on the substrate;
- and
- where each of the light sources comprises:
- a light emitting device emitting excitation light;
- and
- a wavelength conversion unit absorbing the excitation light to emit visible light, where the wavelength conversion unit comprises at least a phosphor having an inorganic compound represented by an empirical formula (Sr, M)2SiO4-xNy:Eu, where M is at least one element selected from Be, Mg, Ca, Ba, Li, Na, K, Rb, and Cs, 0<x<4, and y=2x/3.
4 more elements
Dependencies are inferred from the claim text.