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Patent US5055077A successfully refreshed from Google Patents.
US5055077A
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Cold cathode field emission device having an electrode in an encapsulating layer
Assignee: Motorola Solutions Inc
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Filing: 1989-11-22
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Granted: 1991-10-08
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Expires: 2009-11-22
Abstract
Abstract A cold cathode field emission device (100) having an encapsulating layer (109) formed through a low angle vapor deposition process. The encapsulation layer (109) includes an electrode (111). Depending upon the embodiment, the electrode can function as an anode (312) or as a gate (111).
Inventors
- 👤 Robert C. Kane
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 02:16
CPC Classifications
H; H01; H01J; H01J9/00; H01J9/02; H01J9/022; H01J9/025
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
74 words
A method of providing a cold cathode field emission device, comprising the steps of: A) providing a cathode structure; B) providing a first portion of an encapsulating layer through low angle vapor deposition of insulating material; C) providing a second portion of the encapsulating layer through low angle vapor depostion of conductive material; such that the cathode structure is encapsulated within a substantially evacuated chamber, wherein the encapsulating layer includes an electrode formed therein.
Claim 2
Independent Claim
74 words
A method of providing a cold cathode field emission device, comprising the steps of: A) providing a cathode structure; B) providing a first portion of an encapsulating layer through low angle vapor deposition of insulating material; C) providing a second portion of the encapsulating layer through low angle vapor depostion of conductive material; such that the cathode structure is encapsulated within a substantially evacuated chamber, wherein the encapsulating layer includes an electrode formed therein.
Claim 3
Dependent Claim
19 words
The method of claim 1 wherein the step of providing a cathode structure includes providing a substantially cone-shaped cathode.
Claim 4
Dependent Claim
11 words
The method of claim 1 wherein the electrode comprises an anode.
Claim 5
Dependent Claim
17 words
The method of claim 1 wherein the electrode comprises a gate for controlling emission from the cathode.
References Cited (Backward Citations)
US3755704A
Cited
US3789471A
Cited
US3812559A
Cited
US3894332A
Cited
US3998678A
Cited
US3970887A
Cited
US4008412A
Cited
US3921022A
Cited
US4178531A
Cited
SU855782A1
Cited
US4307507A
Cited
US4578614A
Cited
US4513308A
Cited
EP0172089A1
Cited
US4827177A
Cited
FR2604823A1
Cited
US4685996A
Cited
US4721885A
Cited
GB2204991A
Cited
US4874981A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-10-07 | 1995-04-08 | 1995-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-10-07 | 1999-04-08 | 1999-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-10-07 | 2003-04-08 | 2003-10-08 | $7700.00 | Window Closed / Lapsed |