| 摘要 |
PROBLEM TO BE SOLVED: To obtain a fluorescent layer capable of absorbing light excluding the wavelength range of the light emitted by the fluorescent material and developing high contrast and useful for a plasma display, etc., by using a specific light-emitting particle in combination with a specific light-absorbing material. SOLUTION: This fluorescent layer contains (A) a fluorescent particle emitting visible light by the excitation with ultraviolet rays having a wavelength of <=200 nm and (B) a material having a light-absorbing power in a wavelength range other than the wavelength of the visible light emitted by the component A (e.g. Fe2 O3 absorbing green and blue light, ZnO/TiO2 /NiO/CoO absorbing red and blue light or CoO/Al2 O3 absorbing red and green light). The fluorescent layer preferably contains <=5 wt.% of the component B based on the component A. The fluorescent layer is formed in a state containing the fine particles of the component B attached to the surface of the component A or mixed in the space between the particles of the component A e.g. by mixing the component A, the component B and a vehicle to obtain a paste, applying the paste to a desired part by screen printing and drying and baking the applied paste. |
