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US 7,034,444 B2Granted
Electron-emitting device, electron source and image-forming apparatus, and method for manufacturing electron emitting device
AssigneeCanon Kabushiki Kaisha
InventorTakeo Tsukamoto
Life of this patent
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Abstract
To provide an electron-emitting device, an electron source, an image-forming apparatus, and a method for manufacturing the electron-emitting device whereby it is possible to reduce a device capacity and a driving voltage, to improve the efficiency of emitting electrons, and to obtain high-resolution beam. The extracting electrode and the cathode electrode are provided on an insulating substrate, a layer having growth selectivity of fibrous carbon is formed on the cathode electrode, and the fibrous carbon is grown via catalyst particles formed on the layer.
Claims2
An electron-emitting device comprising:
- (A) a plurality of fibers each comprising carbon;
- and
- (B) a layer made of an oxygen-deficient type metal-oxide semiconductor, wherein metal-oxide of the oxygen-deficient type metal-oxide semiconductor is selected from the group consisting of titanium oxide, zirconium oxide, and niobium oxide,
- wherein the fibers are electrically connected with the layer.
1 more element
Dependencies are inferred from the claim text.