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US 6,184,610 B2Granted
Electron-emitting device, electron source and image-forming apparatus
AssigneeCanon Kabushiki Kaisha
InventorsMasaaki Shibata, Masato Yamanobe, Takeo Tsukamoto, Keisuke Yamamoto, Yutaka Arai
Life of this patent
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Abstract
An electron-emitting device comprises a pair of oppositely disposed device electrodes and an electroconductive film electrically connecting the device electrodes and having an electron-emitting region formed as part thereof. The electroconductive film is partly or entirely covered by a metal oxide coat containing as principal ingredient with a melting point higher than that of the material of principal ingredient of the electroconductive film. The electroconductive film has also a deposited layer comprising carbon, a carbon compound or a mixture thereof.
Claims136
An electron emitting device comprising:
- (a) a pair of electrodes;
- (b) a metal containing electroconductive film, wherein opposite ends of said electrically film are electrically connected to said pair of electrodes, respectively, and said electroconductive film has a gap formed at a part of said electroconductive film between said pair of electrodes;
- (c) a metal oxide film, wherein said metal oxide film at least predominantly covers an area of said electroconductive film between said pair of electrodes, and said metal oxide film contains as a principal ingredient a metal oxide with a melting point higher than that of the principal ingredient of said electroconductive film;
- and
- (d) a carbon film, wherein said carbon film is disposed inside the gap and on said metal oxide film, and said carbon film comprises carbon, a carbon compound or a mixture thereof.
2 more elements
An electron emitting device comprising:
- (a) a pair of electroconductive films, wherein a gap is formed between said pair of electroconductive films;
- (b) a pair of electrodes, wherein one of said electrodes is connected to one of said electroconductive films, the other one of said electrodes is connected to the other one of said electroconductive films, and the gap is disposed between said electrodes;
- (c) a metal oxide film, said metal oxide film at least predominantly covers an area of said electroconductive film between said pair of electrodes and said metal oxide film contains as a principal ingredient a metal oxide with a melting point higher than that of the material of the principal ingredient of said pair of electroconductive films;
- and
- (d) a carbon film, wherein said carbon film is disposed inside the gap, and on said metal oxide film, and said carbon film comprises carbon, a carbon compound or a mixture thereof.
2 more elements
An electron emitting device comprising:
- (a) a pair of electrodes;
- (b) an electroconductive film, wherein opposite ends of said electroconductive film are electrically connected to said pair of electrodes, respectively, and said electroconductive film has a gap formed at a part of said electroconductive film between said pair of electrodes;
- (c) a carbon film, wherein said carbon film is disposed inside the gap and on said electroconductive film, and said carbon film comprising carbon, a carbon compound or mixture thereof;
- and
- (d) a metal oxide film, wherein said metal oxide film at least predominantly covers an area of said electroconductive film between said pair of electrodes, and said metal oxide film contains as a principal ingredient a metal oxide with a melting point higher than that of the material of the principal ingredient of said electroconductive film.
2 more elements
An electron emitting device comprising:
- (a) a pair of electrodes;
- (b) an electroconductive film, wherein said electroconductive film comprises a conductive material and a metal oxide with a higher melting point than that of said conductive material, the opposite ends of said film being electrically connected to said electrodes, respectively, and said electroconductive film has a gap at a part of said electroconductive film;
- and
- (c) a carbon film, wherein said carbon film is disposed inside the gap and on said electroconductive film, said carbon film comprising carbon, a carbon compound or a mixture thereof.
1 more element
An electron emitting device comprising:
- (a ) a pair of electroconductive films, wherein a gap is formed between said pair of electroconductive films;
- (b) a pair of electrodes, wherein one of said electrodes is connected to one of said pair of electroconductive films, and the other one of the electrodes is connected to the other one of said pair of electroconductive films, and the gap is disposed between said electrodes;
- (c) a carbon film, wherein said carbon film is disposed inside the gap and on said pair of electroconductive films, said carbon film comprising carbon, a carbon compound or a mixture thereof;
- and
- (d) a metal oxide film, wherein said metal oxide film at least predominantly covers an area of said pair of electroconductive films between said pair of electrodes, and said metal oxide film contains as a principal ingredient a metal oxide with a melting point higher than that of the material of the principal ingredient of the electroconductive film.
2 more elements
An electron emitting device comprising:
- (a) a pair of electroconductive films, wherein said electroconductive films comprise a conductive material and a metal oxide with a higher melting point than that of said conductive material, and a gap is formed between said electroconductive films;
- (b) a pair of electrodes, wherein one of said electrodes is connected to one of said electroconductive films, the other of said electrodes is connected to the other of said electroconductive films, and the gap is disposed between said electrodes;
- and
- (c) a carbon film, wherein said carbon film is disposed inside the gap and on said electroconductive films and said carbon film comprises carbon, a carbon compound or a mixture thereof.
1 more element
An electron-emitting device comprising:
- a pair of oppositely disposed electrodes;
- an electroconductive film electrically connecting said electrodes, and having an electron-emitting region formed as part thereof;
- a deposited layer comprising carbon, a carbon compound, or a mixture thereof, on and around said electron-emitting region;
- and
- a metal oxide coat at least predominantly covering an area of said electroconductive film between said pair of electrodes, said metal oxide coat containing as a principal ingredient a metal oxide with a melting point higher than that of the material of the principal ingredient of said electroconductive film.
2 more elements
Dependencies are inferred from the claim text.