| abstract |
(57) [Problem] To provide a phosphor composition for a display screen having high luminance, high color purity, no watermark unevenness, and high definition. SOLUTION: The group of the metal-oxygen compound in the display screen comprising the phosphor composition including the phosphor and the phosphor film having the group of the metal-oxygen compound contains an yttrium oxygen compound. In this way, the image brightness and color purity of the display screen and the adhesion of the phosphor composition to the glass of the display screen are remarkably improved. In addition, the fluorescent layer has a high packing density of the fluorescent material, exhibits excellent homogeneity of the fluorescent layer, does not allow “pinholes”, and has a high definition. Present. |