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US 2004/0017154 A1Published application
Phosphor, method for producing phosphor and its precursor, and display device
AssigneeKonica Corporation
InventorsSatoshi Ito, Naoko Furusawa, Hisatake Okada, Hideki Hoshino
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Abstract
A precursor of a silicate phosphor is formed by mixing a silicon system liquid material, in which a silicon system material is dispersed in a liquid, with a metal system liquid material including a metallic element, and the silicate phosphor is obtained by calcining the obtained precursor.
Claims25
A silicate phosphor comprising:
- a silicon system material having particles which form center nuclei of the phosphor;
- and
- a metallic element dispersed and mixed in each of the particles of the silicon system material,
- wherein a mean particle size of the phosphor is from 0.01 to 1 μm, and particles of the phosphor are not fused together.
1 more element
A silicate phosphor comprising:
- a silicon system material having particles which form center nuclei of the phosphor;
- and
- a metallic element dispersed and mixed in each of the particles of the silicon system material,
- wherein a mean particle size of the phosphor is from 0.01 to 1 μm, a value of a coefficient of variation of particle size distribution is not more than 40%, and a shape of individual particle of the phosphor is approximately equal.
1 more element
A method for producing a precursor of a silicate phosphor, comprising:
- a precursor forming step for forming the precursor of the phosphor by mixing a silicon system liquid material, in which wet silica is dispersed in a liquid, with a metal system liquid material including a metallic element.
Dependencies are inferred from the claim text.