US6344711B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electron-emitting device
Assignee: Canon Inc
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Filing: 2000-02-25
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Granted: 2002-02-05
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Expires: 2020-02-25
Abstract
Abstract An electron-emitting device comprises a pair of oppositely disposed electrodes and an electroconductive film arranged between the electrodes and including a high resistance region. The high resistance region has a deposit containing carbon as a principal ingredient. The electron-emitting device can be used for an electron source of an image-forming apparatus of the flat panel type.
Inventors
- 👤 Toshikazu Ohnishi
- 👤 Masato Yamanobe
- 👤 Ichiro Nomura
- 👤 Hidetoshi Suzuki
- 👤 Yoshikazu Banno
- 👤 Takeo Ono
- 👤 Masanori Mitome
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:01
CPC Classifications
H; H01; H01J; H01J1/00; H01J1/02; H01J1/30; H01J31/00; H01J31/08; H01J31/10; H01J31/12; H01J31/123; H01J31/125; H01J31/127; H01J1/316; H01J9/00; H01J9/02; H01J9/022; H01J9/027; H01J2201/00; H01J2201/30; H01J2201/316; H01J2201/3165; H01J2329/00; H01J2329/02; H01J2329/04; H01J2329/0486; H01J2329/0489
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
94 words
An electron-emitting device comprising: a pair of electrodes; a pair of electroconductive films arranged across a first gap between said pair of electrodes and connected to each of said pair of electrodes; and a film that includes as a constituent a material different from an electroconductive material of said pair of electroconductive films, said film being connected to at least one of said pair of electroconductive films, and being arranged on the at least one of said pair of electroconductive films and disposed in the first gap so as to form a second gap.
Claim 2
Dependent Claim
94 words
An electron-emitting device comprising: a pair of electrodes; a pair of electroconductive films arranged across a first gap between said pair of electrodes and connected to each of said pair of electrodes; and a film that includes as a constituent a material different from an electroconductive material of said pair of electroconductive films, said film being connected to at least one of said pair of electroconductive films, and being arranged on the at least one of said pair of electroconductive films and disposed in the first gap so as to form a second gap.
Claim 3
Dependent Claim
18 words
An electron-emitting device according to claim 1 , wherein said pair of electroconductive films includes electroconductive fine particles.
Claim 4
Dependent Claim
22 words
An electron-emitting device according to claim 2 , wherein the electroconductive fine particles include a metal or an oxide of a metal.
Claim 5
Dependent Claim
24 words
An electron-emitting device according to claim 2 , wherein the electroconductive fine particles have a particle size between approximately 1 nm to 20 nm.
Claim 6
Dependent Claim
27 words
An electron-emitting device according to claim 1 , wherein each of said pair of electroconductive films has a film thickness of approximately 1 nm to 50 nm.
Claim 7
Dependent Claim
28 words
An electron-emitting device according to claim 1 , wherein each of said pair of electroconductive films has a resistance of approximately 10 3 Ω/□ to 10 7 Ω/□.
Claim 8
Dependent Claim
28 words
An electron-emitting device according to claim 1 , wherein said film is comprised of a carbon-based deposit and has a film thickness of approximately 500 Å or less.
Claim 9
Dependent Claim
17 words
An electron-emitting device according to claim 1 , wherein said pair of electroconductive films contains palladium (Pd).
Claim 10
Dependent Claim
16 words
An electron-emitting device according to claim 1 , wherein the first gap contains electroconductive fine particles.
Claim 11
Dependent Claim
36 words
An electron-emitting device according to claim 1 , wherein said film includes a material different from the electroconductive material of said pair of electroconductive films, is arranged in the first gap, and contains electroconductive fine particles.
Claim 12
Dependent Claim
34 words
An electron-emitting device according to claim 1 , wherein at least a part of said pair of electrodes is coated with said film and includes the electroconductive material of the pair of electroconductive films.
Claim 13
Dependent Claim
31 words
An electron-emitting device according to claim 1 , wherein an electron emission current of said device has a monotonically increasing characteristic relative to a voltage applied to said pair of electrodes.
Claim 14
Dependent Claim
71 words
An electron-emitting device comprising: a pair of electrodes; a pair of electroconductive films arranged across a first gap between said pair of electrodes and connected to each of said pair of electrodes; and a film that includes carbon as a constituent, said film being connected to said pair of electroconductive films, arranged on said pair of electroconductive films, and disposed in the first gap so as to form a second gap.
Claim 15
Dependent Claim
71 words
An electron-emitting device comprising: a pair of electrodes; a pair of electroconductive films arranged across a first gap between said pair of electrodes and connected to each of said pair of electrodes; and a film that includes carbon as a constituent, said film being connected to said pair of electroconductive films, arranged on said pair of electroconductive films, and disposed in the first gap so as to form a second gap.
Claim 16
Dependent Claim
18 words
An electron-emitting device according to claim 13 , wherein said pair of electroconductive films includes electroconductive fine particles.
Claim 17
Dependent Claim
22 words
An electron-emitting device according to claim 14 , wherein the electroconductive fine particles include a metal or an oxide of a metal.
Claim 18
Dependent Claim
24 words
An electron-emitting device according to claim 14 , wherein the electroconductive fine particles have a particle size between approximately 1 nm to 20 nm.
Claim 19
Dependent Claim
27 words
An electron-emitting device according to claim 13 , wherein each of said pair of electroconductive films has a film thickness of approximately 1 nm to 50 nm.
Claim 20
Dependent Claim
28 words
An electron-emitting device according to claim 13 , wherein each of said pair of electroconductive films has a resistance of approximately 10 3 Ω/□ to 10 7 Ω/□.
Claim 21
Dependent Claim
28 words
An electron-emitting device according to claim 13 , wherein said film is comprised of a carbon-based deposit and has a film thickness of approximately 500 Å or less.
Claim 22
Dependent Claim
17 words
An electron-emitting device according to claim 13 , wherein said pair of electroconductive films contains palladium (Pd).
Claim 23
Dependent Claim
16 words
An electron-emitting device according to claim 13 , wherein the first gap contains electroconductive fine particles.
Claim 24
Dependent Claim
23 words
An electron-emitting device according to claim 13 , wherein said film that includes carbon arranged in the first gap contains electroconductive fine particles.
Claim 25
Dependent Claim
26 words
An electron-emitting device according to claim 13 , wherein at least a part of said pair of electrodes is coated with the film that includes carbon.
Claim 26
Dependent Claim
31 words
An electron-emitting device according to claim 13 , wherein an electron emission current of said device has a monotonically increasing characteristic relative to a voltage applied to said pair of electrodes.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2005-02-04 | 2005-08-06 | 2006-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2009-02-04 | 2009-08-06 | 2010-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2013-02-04 | 2013-08-06 | 2014-02-05 | $7700.00 | Window Closed / Lapsed |