PHOSPHOR SCREEN WITH METAL BACK, METHOD OF FORMING THE SAME AND IMAGE DISPLAY UNIT

摘要

A phosphor screen comprising face plate (1) having, disposed on its internal surface, at least phosphor layer (3) and metal back layer (5), wherein the metal back layer (5) is superimposed on first treatment layer (4) containing at least one inorganic oxide, such as SiO2, SiO2 containing an alkali metal such as Na, Al2O3, TiO2 or ZrO2, formed on the phosphor layer (3). A second treatment layer containing the above inorganic oxide can be superimposed on the metal back layer (5). The phosphor screen with metal back, when used in an image display unit such as FED, can not only suppress abnormal discharge and enhance voltage withstanding characteristics but also attain a brightness increase.