Surface conduction electron emitter display
AssigneeCanon Kabushiki Kaisha
InventorYoichi Ando
Life of this patent
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Abstract
The invention provides an image forming apparatus in which orbit shift can be prevented to perform good image display in an electron beam emitted from the electron-emitting device adjacent to the spacer when an antistatic spacer coated with a high resistance film is used. A surface shape is controlled by forming a fine particle film on the surface of a row directional wiring 5 in which a spacer 3 is arranged, the electron emission is realized from electron-emitting areas 14a and 14b near contacting areas 15a and 15b in a non-contacting area 16 in which the spacer 3 is not in contact with the row directional wiring 5, and the non-contacting area 16 of the spacer 3 is irradiated with the electron to decrease a potential, which allows a good equipotential line 17 to be formed.
Claims5
An image forming apparatus comprising:
- a face plate which has a luminescent member and an electrode, the luminescent member emitting light by electron irradiation, the electrode being defined by a first potential;
- a rear plate which has a wiring extending in a first direction and a plurality of electron-emitting devices arranged along the first direction and connected to the wiring, the wiring being defined by a second potential different from the first potential, and the plurality of electron-emitting devices irradiating the luminescent member with an electron;
- and
- a spacer arranged between the wiring and the electrode and electrically connected to the wiring and the electrode, the spacer having an end face which faces the rear plate, the end face having a resistivity, and the spacer extending longitudinally along the first direction;
- wherein the end face of the spacer facing the rear plate includes contacting areas contacting the wiring and non-contacting areas spaced from the wiring, the contacting areas and the non-contacting areas being arranged in an interleaved relationship of abutting to each other along the first direction, and
- a fine particle film provided on at least the non-contacting areas of the wiring.
Dependencies are inferred from the claim text.