GREEN-EMITTING PHOSPHOR PARTICLES, METHOD FOR MANUFACTURING GREEN-EMITTING PHOSPHOR PARTICLES, COLOR CONVERSION SHEET, LIGHT-EMITTING DEVICE, AND IMAGE DISPLAY DEVICE ASSEMBLY
First Claim
Patent Images
1. A method for manufacturing green-emitting phosphor particles comprising the steps of:
- producing a powder containing europium and strontium from a solution containing a europium compound and a strontium compound;
mixing the resulting powder and a powdered gallium compound; and
performing firing.
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Abstract
A method for manufacturing green-emitting phosphor particles including the steps of producing a powder containing europium and strontium from a solution containing a europium compound and a strontium compound, mixing the resulting powder and a powdered gallium compound, and performing firing.
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Citations
20 Claims
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1. A method for manufacturing green-emitting phosphor particles comprising the steps of:
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producing a powder containing europium and strontium from a solution containing a europium compound and a strontium compound; mixing the resulting powder and a powdered gallium compound; and performing firing. - View Dependent Claims (2, 3, 6, 7)
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4. A method for manufacturing green-emitting phosphor particles comprising the steps of:
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producing a powder by adding a powdered gallium compound to a solution containing a europium compound and a strontium compound and adding a salt to precipitate the europium compound and the strontium compound; and firing the resulting powder. - View Dependent Claims (5)
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8. A color conversion sheet comprising:
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a first transparent base member; a second transparent base member; and a color conversion layer sandwiched between the first transparent base member and the second transparent base member, wherein the color conversion layer is formed from at least green-emitting phosphor particles and the green-emitting phosphor particles are composed of (Sr,Ba,Ca)1-xGa2S4;
Eux (where 0.10≦
x≦
0.20) and the value of (internal quantum efficiency/absorption efficiency) is 0.7 or more. - View Dependent Claims (9, 10)
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11. A light-emitting device comprising:
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(a) a light source; and (b) phosphor particles which are excited by the light emitted from the light source, wherein the phosphor particles are composed of at least green-emitting phosphor particles and the green-emitting phosphor particles are composed of (Sr,Ba,Ca)1-xGa2S4;
Eux (where 0.10≦
x≦
0.20) andthe value of (internal quantum efficiency/absorption efficiency) is 0.7 or more. - View Dependent Claims (12, 13, 14)
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15. An image display device assembly comprising;
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(A) an image display device; and (B) a light-emitting device to illuminate the image display device from the back, wherein the light-emitting device includes (a) a light source; and (b) phosphor particles which are excited by the light emitted from the light source, the phosphor particles are composed of at least green-emitting phosphor particles, the green-emitting phosphor particles are composed of (Sr,Ba,Ca)1-xGa2S4;
Eux (where 0.10≦
x≦
0.20), andthe value of (internal quantum efficiency/absorption efficiency) is 0.7 or more. - View Dependent Claims (16, 17, 18)
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19. Green-emitting phosphor particles comprising (Sr,Ba,Ca)1-xGa2S4:
- Eux (where 0.10≦
x≦
0.20),wherein the value of (internal quantum efficiency/absorption efficiency) is 0.7 or more. - View Dependent Claims (20)
- Eux (where 0.10≦
Specification