Patent ID: 6670747
Filing Date: 2003-12-30
Classification: H01J

Abstract:
A flat display apparatus comprising:a first substrate and a second substrate arranged, opposing to each other; phosphor layers provided on an inner surface of the first substrate; and an electron source device provided between the first and second substrates, configured to excite the phosphor layers, and comprising an oxide substrate having a first surface opposing the second substrate, a second surface contacting the phosphor layers, and a number of small through holes including a first opening open to the first surface and a second opening open to the second surface, a single kind of electron-emitting material buried in the through holes from the first openings to regions closed to the second openings, a first electrode formed on the first surface of the oxide substrate, which faces the second substrate, and contacting the electron-emitting material, and a second electrode provided on the second surface side of the oxide substrate, insulated from the electron-emitting material and configured to concentrate an electron field of the electron-emitting material by virtue of an voltage applied between the first electrode and the second electrode so as to cause the electron-emitting material to emit electrons toward the phosphor layers.