Electron emission source, method and image-forming apparatus, with enhanced output and durability
AssigneeCanon Kabushiki Kaisha
InventorMasaaki Shibata
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Abstract
An electron-emitting device comprising, on a substrate, a pair of electrodes, an electroconductive film having a gap in part, connected to the pair of electrodes, a member comprising a principal component of carbon, provided in the gap portion while being connected to the electroconductive film, and a metallic oxide comprising at least one element selected from the group consisting of nickel, iron, and cobalt, between the member comprising the principal component of carbon and the substrate.
Claims15
An electron-emitting device comprising, a substrate, a pair of electrodes disposed on the substrate, an electroconductive film disposed on the substrate and having a gap in at least a portion thereof, the electroconductive film being connected to said pair of electrodes, and a member comprising carbon, said member being provided in the gap and being connected to the electroconductive film, wherein a metallic oxide comprising at least one element selected from the group consisting of nickel, iron, and cobalt is disposed between said member comprising carbon and said substrate, and said metallic oxide also is disposed between said electroconductive film and said substrate.
An electron-emitting device comprising, a substrate, a pair of electrodes disposed on the substrate, an electroconductive film disposed on the substrate and having a gap in at least a portion thereof, said electroconductive film being connected to said pair of electrodes, a member comprising a principal component of carbon provided in the gap and being connected to the electroconductive film, and a metallic oxide comprising a least one element selected from the group consisting of nickel, iron, and cobalt, disposed between said member comprising the principal component of carbon and said substrate, wherein said metallic oxide is contained in a matrix containing a principal component of silica and is disposed between said member comprising the principal component of carbon and said substrate.
A production method of an electron-emitting device, the method comprising a step of forming an electroconductive film on a film comprising a metallic oxide which includes at least one element selected from the group consisting of nickel, iron, and cobalt, provided between a pair of electrodes on a substrate, a step of forming a gap in at least a portion of the electroconductive film, and a step of forming a member comprising a principal component of carbon in a connected state to the electroconductive film in the gap.
Dependencies are inferred from the claim text.