US5289086A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electron device employing a diamond film electron source
Assignee: Motorola Solutions Inc
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Filing: 1992-05-04
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Granted: 1994-02-22
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Expires: 2012-05-04
Abstract
Abstract An electron device including a diamond material electron emitter and an anode, both disposed on a supporting substrate, so as to define an interelectrode region therebetween. Electron transport across the interelectrode region is initiated at an emitting surface of the diamond material electron emitter. An alternative embodiment employs a gate electrode disposed substantially symmetrically and axially displaced about the electron emitter and substantially in the interelectrode region to provide a modulation capability.
Inventors
- 👤 Robert C. Kane
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 04:33
CPC Classifications
H; H01; H01J; H01J3/00; H01J3/02; H01J3/021; H01J3/022; H01J2201/00; H01J2201/30; H01J2201/304; H01J2201/30446; H01J2201/30453; H01J2201/30457
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
75 words
An electron device comprising: a supporting substrate having a major surface; a diamond material electron emitter disposed on a part of the major surface of the supporting substrate and having an emitting surface for emitting electrons; and an anode, for collecting at least some of any emitted electrons, disposed on a part of the major surface distally with respect to the emitting surface of the diamond material electron emitter and defining an interelectrode region therebetween.
Claim 2
Dependent Claim
75 words
An electron device comprising: a supporting substrate having a major surface; a diamond material electron emitter disposed on a part of the major surface of the supporting substrate and having an emitting surface for emitting electrons; and an anode, for collecting at least some of any emitted electrons, disposed on a part of the major surface distally with respect to the emitting surface of the diamond material electron emitter and defining an interelectrode region therebetween.
Claim 3
Dependent Claim
40 words
An electron device as claimed in claim 1 wherein the diamond material electron emitter includes a diamond film having a crystallographic orientation corresponding to the 100 orientation formed substantially parallel with respect to the major surface of the supporting substrate.
Claim 4
Dependent Claim
20 words
An electron device as claimed in claim 1 wherein the diamond material electron emitter is selectively impurity doped semiconductor diamond.
Claim 5
Dependent Claim
20 words
An electron device as claimed in claim 1 wherein the emitting surface is substantially defined as a preferred crystallographic orientation.
Claim 6
Dependent Claim
18 words
An electron device as claimed in claim 4 wherein the preferred crystallographic orientation is the 111 crystallographic plane.
Claim 7
Dependent Claim
18 words
An electron device as claimed in claim 1 wherein the diamond film electron emitter includes polycrystalline diamond material.
Claim 8
Dependent Claim
38 words
An electron device as claimed in claim 1 and having a voltage operably applied between the anode and the diamond material electron source such that electrons are emitted from the emitting surface and preferentially collected at the anode.
Claim 9
Dependent Claim
125 words
An electron device comprising: a supporting substrate having a major surface; a diamond material electron emitter disposed on the major surface of the supporting substrate and having an emitting surface for emitting electrons; an anode, for collecting at least some of any electrons emitted by the emitting surface of the diamond material electron emitter, disposed on the major surface of the supporting substrate distally with respect to the emitting surface of the diamond material electron emitter and defining an interelectrode region between the anode and the emitting surface of the diamond material electron emitter; and a gate electrode disposed on the major surface of the supporting substrate and substantially symmetrically and axially displaced about the diamond material electron emitter and substantially in the interelectrode region.
Claim 10
Dependent Claim
125 words
An electron device comprising: a supporting substrate having a major surface; a diamond material electron emitter disposed on the major surface of the supporting substrate and having an emitting surface for emitting electrons; an anode, for collecting at least some of any electrons emitted by the emitting surface of the diamond material electron emitter, disposed on the major surface of the supporting substrate distally with respect to the emitting surface of the diamond material electron emitter and defining an interelectrode region between the anode and the emitting surface of the diamond material electron emitter; and a gate electrode disposed on the major surface of the supporting substrate and substantially symmetrically and axially displaced about the diamond material electron emitter and substantially in the interelectrode region.
Claim 11
Dependent Claim
41 words
An electron device as claimed in claim 8 wherein the diamond material electron emitter includes a diamond film 30 having a crystallographic orientation corresponding to the 100 orientation formed substantially parallel with respect to the major surface of the supporting substrate.
Claim 12
Dependent Claim
20 words
An electron device as claimed in claim 8 wherein the diamond material electron emitter is selectively impurity doped semiconductor diamond.
Claim 13
Dependent Claim
20 words
An electron device as claimed in claim 8 wherein the emitting surface is substantially defined as a preferred crystallographic orientation.
Claim 14
Dependent Claim
18 words
An electron device as claimed in claim 11 wherein the preferred crystallographic orientation is the 111 crystallographic plane.
Claim 15
Dependent Claim
18 words
An electron device as claimed in claim 8 wherein the diamond film electron emitter includes polycrystalline diamond material.
Claim 16
Dependent Claim
73 words
An electron device as claimed in claim 8 and having a first voltage operably applied between the anode and the diamond material electron emitter and having a second voltage operably applied between the gate electrode and the diamond material electron emitter such that the rate of electron emission from the emitting surface of the diamond material electron emitter occurring as a result of the first voltage is modulated by modulating the second voltage.
References Cited (Backward Citations)
US5138237A
Cited
US5180951A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-02-21 | 1997-08-23 | 1998-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-02-21 | 2001-08-23 | 2002-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-02-21 | 2005-08-23 | 2006-02-22 | $7700.00 | Window Closed / Lapsed |