Patent ID: 7298080

Claim:
A display device comprising: (a) a rear substrate including an insulative substrate on which a plurality of cold cathode elements for emitting electrons are formed; (b) a display substrate including: a light transparent substrate arranged to oppose to said rear substrate; a metal sheet including a plurality of fine holes arranged in a matrix and each having a plurality of fluorescent materials excited by an electron beam from the cold cathode element so as to emit light; a metal back arranged at the side of the rear substrate of the metal sheet, to which metal back acceleration voltage is applied for accelerating the electron beam from the cold cathode element; (c) a plurality of support members arranged vertically between said rear substrate and said display substrate so as to maintain the interval between them; and (d) a frame member; wherein a space surrounded by said rear substrate, said display substrate and said frame member is a vacuum atmosphere; wherein said metal sheet includes a light absorbing layer for absorbing external light formed on a surface of the light transparent substrate side a plurality of concave portions for holding said support members on the surface of said rear substrate side; wherein said metal back has an opening formed to exposes a predetermined area at least around the concave portion of said metal sheet; and wherein said display substrate has a fixation layer for fixing said metal sheet to the light transparent substrate.