Image display device

A display comprising a faceplate on which a phosphor layer is formed and an electron source which irradiates an electron beam onto said phosphor layer, wherein

• the phosphor constituting said phosphor layer has the component ZnS:M,N (where M is one or more elements selected from Cu, Ag and Au, and N is one or more elements selected from Al, Ga, In, and Cl), and
• the concentration distribution of said N or M on the phosphor surface is 10% or less.

A display comprising a faceplate on which a phosphor layer is formed and an electron source which irradiates an electron beam onto said phosphor layer, wherein

• the phosphor constituting said phosphor layer has the component ZnS:M,N (where M is one or more elements selected from Cu, Ag and Au, and N is one or more elements selected from Al, Ga, In, and Cl), and
• the temperature characteristics, which are obtained by detecting the amount of luminescence while increasing the temperature of the phosphor at a constant heating rate by exciting the phosphor with light of 168 nm vacuum-ultraviolet rays, have a peak in the amount of luminescence at around 190K.

A display comprising a faceplate on which a phosphor layer is formed and an electron source which irradiates an electron beam onto said phosphor layer, wherein a phosphor constituting said phosphor layer includes one with a luminescence center added to a host crystal of ZnS;

• in which the thermoluminescence intensity indicating a density of sulfur vacancies decreases in the temperature range from 350K to 600K in a thermal glow curve showing the amount of thermal glow generated by increasing the temperature of the phosphor at a constant heating rate after excitation of said phosphor by ultraviolet rays of 254 nm.

24-26 (Canceled)