VACUUM ULTRAVIOLET EXCITATION PHOSPHOR AND VACUUM ULTRAVIOLET RAY EXCITATION LIGHT EMITTER USING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a vacuum ultraviolet excitation phosphor in which a photogenesis luminance, paste baking luminance maintenance ratio and luminance maintenance ratio by a gas discharge are excellent, and to provide a vacuum ultraviolet ray excitation light emitter using the same.;SOLUTION: The vacuum ultraviolet excitation phosphor comprises a coating of a surface-treatment material including a phosphate of at least one metallic element chosen from a group consisting of Eu, La, Y, Sc, Tb and In on a particle surface of an alkaline earth aluminate phosphor activated with at least one of activators comprising Eu and Mn, wherein the phosphate contains 2 mols or more of a P element to one mol of a metallic element, and the photogenesis luminance, paste baking luminance maintenance ratio and luminance maintenance ratio by a gas discharge are excellent. A vacuum ultraviolet ray excitation light emitter which is excellent in a photogenesis characteristic or life span characteristic can be provided using the phosphor.;COPYRIGHT: (C)2010,JPO&INPIT