Patent US5258685A successfully refreshed from Google Patents.
US5258685A
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US
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Field emission electron source employing a diamond coating
Assignee: Motorola Solutions Inc
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Filing: 1992-05-15
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Granted: 1993-11-02
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Expires: 2012-05-15
Abstract
Abstract A field emission electron emitter including a coating of diamond material disposed on a surface of a selectively formed conductive/semiconductive electrode wherein carbon ions are implanted at a surface of the electrode to function as nucleation sites for the diamond formation. A second field emission electron emitter is constructed by implanting carbon ions at a surface of a selectively shaped substrate to function as nucleation sites for the diamond formation. A conductive layer is deposited over the diamond and the substrate is removed to leave an electron emitter with a diamond coating.
Inventors
- 👤 James E. Jaskie
- 👤 Robert C. Kane
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 02:48
CPC Classifications
H; H01; H01J; H01J9/00; H01J9/02; H01J9/022; H01J9/025; B; B82; B82Y; B82Y15/00; 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: 14
Claim 1
Independent Claim
57 words
A field emission electron emitter comprising: a selectively formed conductive/semiconductive electrode having a major surface; a plurality of ion implanted nucleation sites disposed on the major surface of the conductive/semiconductive electrode; and at least a diamond crystallite disposed on the major surface of the conductive/semiconductive electrode and at a nucleation site of the plurality of nucleation sites.
Claim 2
Dependent Claim
57 words
A field emission electron emitter comprising: a selectively formed conductive/semiconductive electrode having a major surface; a plurality of ion implanted nucleation sites disposed on the major surface of the conductive/semiconductive electrode; and at least a diamond crystallite disposed on the major surface of the conductive/semiconductive electrode and at a nucleation site of the plurality of nucleation sites.
Claim 3
Dependent Claim
51 words
A field emission electron emitter comprising: a selectively formed conductive/semiconductive electrode having a major surface; a plurality of ion implanted nucleation sites disposed on the major surface of the conductive/semiconductive electrode; and a substantialIy uniform diamond coating disposed on at least a part of the major surface of the conductive/semiconductive electrode.
Claim 4
Dependent Claim
51 words
A field emission electron emitter comprising: a selectively formed conductive/semiconductive electrode having a major surface; a plurality of ion implanted nucleation sites disposed on the major surface of the conductive/semiconductive electrode; and a substantialIy uniform diamond coating disposed on at least a part of the major surface of the conductive/semiconductive electrode.
Claim 5
Dependent Claim
95 words
A field emission electron device comprising: a field emission electron emitter including a selectively formed conductive/semiconductive electrode having a major surface; and a plurality of ion implanted nucleation sites disposed on the major surface of the conductive/semiconductive electrode; and at least a first diamond crystallite disposed on the major surface of the conductive/semiconductive electrode and at a nucleation site of the plurality of nucleation sites; an emission controlling electrode proximally disposed with respect to the electron emitter for controlling the emission rate of electrons from the electron emitter; and an anode for collecting emitted electrons.
Claim 6
Dependent Claim
95 words
A field emission electron device comprising: a field emission electron emitter including a selectively formed conductive/semiconductive electrode having a major surface; and a plurality of ion implanted nucleation sites disposed on the major surface of the conductive/semiconductive electrode; and at least a first diamond crystallite disposed on the major surface of the conductive/semiconductive electrode and at a nucleation site of the plurality of nucleation sites; an emission controlling electrode proximally disposed with respect to the electron emitter for controlling the emission rate of electrons from the electron emitter; and an anode for collecting emitted electrons.
Claim 7
Dependent Claim
92 words
A field emission electron device comprising: a field emission electron emitter including a selectively formed conductive/semiconductive electrode having a major surface; a plurality of ion implanted nucleation sites disposed on the major surface of the conductive/semiconductive electrode; and a substantially uniform diamond coating disposed on at least a part of the major surface of the conductive/semiconductive electrode; an emission controlling electrode proximally disposed with respect to the electron emitter for controlling the emission rate of electrons from the electron emitter; and an anode for collecting at least some of any emitted electrons.
Claim 8
Dependent Claim
92 words
A field emission electron device comprising: a field emission electron emitter including a selectively formed conductive/semiconductive electrode having a major surface; a plurality of ion implanted nucleation sites disposed on the major surface of the conductive/semiconductive electrode; and a substantially uniform diamond coating disposed on at least a part of the major surface of the conductive/semiconductive electrode; an emission controlling electrode proximally disposed with respect to the electron emitter for controlling the emission rate of electrons from the electron emitter; and an anode for collecting at least some of any emitted electrons.
Claim 9
Dependent Claim
58 words
An electron emitter comprising: a selectively formed conductive/semiconductive electrode having a major surface; a plurality of ion implanted carbon nucleation sites disposed on the major surface of the conductive/semiconductive electrode; and at least a diamond crystallite disposed on the major surface of the conductive/semiconductive electrode and at a carbon nucleation site of the plurality of carbon nucleation sites.
Claim 10
Dependent Claim
58 words
An electron emitter comprising: a selectively formed conductive/semiconductive electrode having a major surface; a plurality of ion implanted carbon nucleation sites disposed on the major surface of the conductive/semiconductive electrode; and at least a diamond crystallite disposed on the major surface of the conductive/semiconductive electrode and at a carbon nucleation site of the plurality of carbon nucleation sites.
Claim 11
Dependent Claim
27 words
A field emission electron emitter comprising: a layer of conductive/semiconductive material; and a diamond coating disposed on at least a part of the layer of conductive/semiconductive material.
Claim 12
Dependent Claim
27 words
A field emission electron emitter comprising: a layer of conductive/semiconductive material; and a diamond coating disposed on at least a part of the layer of conductive/semiconductive material.
Claim 13
Dependent Claim
37 words
A field emission electron emitter as claimed in claim 6 wherein the layer of conductive/semiconductive material is formed with a relatively sharp projection having an extended tip and the diamond coating is disposed on the extended tip.
Claim 14
Dependent Claim
23 words
A field emission electron emitter as claimed in claim 6 wherein the diamond coating includes a substantially uniformly distributed plurality of diamond crystallites.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1996-11-01 | 1997-05-03 | 1997-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-11-01 | 2001-05-03 | 2001-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-11-01 | 2005-05-03 | 2005-11-02 | $7700.00 | Window Closed / Lapsed |