To provide a flat display device with improved adhesive force of a phosphor film without using a chemical additive.

Of the flat display device provided with a first substrate, an electron emission part formed on the first substrate, a second substrate arranged at any interval with the first substrate and forming a vacuum vessel together with the first substrate, and an image production part emitting light with electron emitted from the electron emission part and producing an arbitrary image, the image production part contains a phosphor film formed with an arbitrary pattern on the second substrate and emitting light with electron emitted from the electron emission part, and an anode electrode formed in adhesion to either side of the phosphor film, and a jagged part is formed either on the anode electrode or the second substrate.