US5619092A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Enhanced electron emitter
Assignee: Motorola Solutions Inc
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Filing: 1993-02-01
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Granted: 1997-04-08
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Expires: 2013-02-01
Abstract
Abstract An electron emitter formed with a layer of diamond-like carbon having a diamond bond structure with an electrically active defect at an emission site. The electrically active defect acts like a very thin electron emitter with a very low work function and improved current characteristics, including in improved saturation current.
Inventors
- 👤 James E. Jaskie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:29
CPC Classifications
H; H01; H01J; H01J1/00; H01J1/02; H01J1/30; H01J1/304; H01J1/3042; H01J2201/00; H01J2201/30; H01J2201/304; H01J2201/30446; H01J2201/30453; H01J2201/30457
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
42 words
An electron emitter formed with a layer of material having a predetermined structure with an electrically active defect in the structure at an emission site wherein the layer of material has a surface containing the emission site and the surface is hydrogenated.
Claim 2
Dependent Claim
42 words
An electron emitter formed with a layer of material having a predetermined structure with an electrically active defect in the structure at an emission site wherein the layer of material has a surface containing the emission site and the surface is hydrogenated.
Claim 3
Dependent Claim
27 words
An electron emitter as claimed in claim 1 wherein the electrically active defect is located in the layer of material in spaced relation from the hydrogenated surface.
Claim 4
Dependent Claim
60 words
A field emission device including a supporting substrate having a layer of material including one of diamond and diamond-like carbon formed on a surface thereof, the layer of material having a diamond bond structure with an electrically active defect defining an electron emitter wherein the layer of material has a surface containing the electron emitter and the surface is hydrogenated.
Claim 5
Dependent Claim
60 words
A field emission device including a supporting substrate having a layer of material including one of diamond and diamond-like carbon formed on a surface thereof, the layer of material having a diamond bond structure with an electrically active defect defining an electron emitter wherein the layer of material has a surface containing the electron emitter and the surface is hydrogenated.
Claim 6
Dependent Claim
28 words
A field emission device as claimed in claim 3 wherein the electrically active defect is located in the layer of material in spaced relation from the hydrogenated surface.
Claim 7
Dependent Claim
45 words
A field emission device as claimed in claim 3 wherein the electrically active defect is located in the layer of material in spaced relation from the hydrogenated surface and is positioned at an angle in the range of approximately 45° to 90° with the surface.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-04-07 | 2000-10-07 | 2001-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-04-07 | 2004-10-07 | 2005-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-04-07 | 2008-10-07 | 2009-04-08 | $7700.00 | Window Closed / Lapsed |