过去用荧光体制发光屏时,是把荧光体配成粉浆后涂在玻璃等基体上,然后,进行烘烤来得到具有所要求荧光膜的发光屏。烘烤时的温度必须能使粉浆中的粘结剂分解除去,以使荧光膜固化。因此,在加热过程中会引起荧光体氧化而降低亮度。例如,在荧光灯生产的过程中,涂有荧光体的玻管要在的600℃的温度下烘烤,这样一来,大部份荧光 In the past, when a phosphor screen was used, the phosphors were pasted into a paste, applied to a substrate such as glass, and then baked to obtain a luminescent screen having a desired fluorescent film. The baking temperature must be able to disintegrate the binder in the slip so that the fluorescent film cures. Therefore, the phosphor is oxidized during heating to reduce the luminance. For example, during fluorescent lamp production, a phosphor-coated glass tube is baked at a temperature of 600 ° C, so that most of the fluorescence