US5378962A
Expired / Lapsed
US
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Method and apparatus for a high resolution, flat panel cathodoluminescent display device
Assignee: United States Department of the Navy
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Filing: 1992-05-29
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Granted: 1995-01-03
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Expires: 2012-05-29
Abstract
Abstract A high resolution, cathodoluminescent display screen or device and a method of producing such a display device is disclosed. The display screen includes a plurality of channel structures having longitudinal ends, a transparent medium formed in a plane to which the channel structures are fixed with one longitudinal end thereof oriented toward the plane of the transparent medium, and a cathodoluminescent material deposited on the channel structures whereby incident electrons and light generated by the incident electrons are directed along the channel structures. Preferably, the display screen also includes a mechanism for removing built up charge from the display screen, such as conductive channel structures and/or a conductive transparent medium. The cathodoluminescent material can include phosphors, and for producing a color display, different materials producing different colors would be used. In one preferred embodiment, the channel structures are tubules. Alternately, the channel structures can be channel plates or other structures providing channeling structures. In the preferred embodiment, the transparent medium is glass. However, the transparent medium could be quartz or some other equivalent material. In order to provide a display device the display screen is then mated with an addressable electron source for generating electrons incident on the cathodoluminescent material of selected channel structures. Preferably, the electron source means includes a field emitter array with a reflecting surface.
Inventors
- 👤 Henry F. Gray
- 👤 Ronald R. Price
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:32
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/02; H01J29/08; H01J29/085; H01J29/04; H01J31/00; H01J31/08; H01J31/10; H01J31/12; H01J31/123; H01J31/125; H01J31/127
Claims Analysis
Total Claims: 32
Claim 1
Independent Claim
82 words
A display screen comprising: a plurality of channel structures, each said channel structures having a longitudinal axis with a first and second end; means for holding said plurality of channel structures in a plane with the longitudinal axes thereof perpendicular to the plane; and a cathodoluminescent material deposited on, in, and in between the channel structures, in a preselected region of the channel structure to cause incident electrons and light generated by the incident electrons to be directed along said channel structures.
Claim 2
Dependent Claim
82 words
A display screen comprising: a plurality of channel structures, each said channel structures having a longitudinal axis with a first and second end; means for holding said plurality of channel structures in a plane with the longitudinal axes thereof perpendicular to the plane; and a cathodoluminescent material deposited on, in, and in between the channel structures, in a preselected region of the channel structure to cause incident electrons and light generated by the incident electrons to be directed along said channel structures.
Claim 3
Dependent Claim
22 words
A display screen as claimed in claim 1 and further including a means for removing built up charge from the display screen.
Claim 4
Dependent Claim
17 words
A display screen as claimed in claim 2 wherein said means for removing includes conductive channel structures.
Claim 5
Dependent Claim
14 words
A display screen as claimed in claim 1 wherein said cathodoluminescent material includes phosphor.
Claim 6
Dependent Claim
21 words
A display screen as claimed in claim 1 wherein said cathodoluminescent material includes at least one material for producing a color.
Claim 7
Dependent Claim
23 words
A display screen as claimed in claim 1 wherein said cathodoluminescent material includes a plurality of different materials each producing a different color.
Claim 8
Dependent Claim
15 words
A display screen as claimed in claim 1 wherein said channel structures are channel plates.
Claim 9
Dependent Claim
23 words
A display screen as claimed in claim 1 wherein said channel structure is selected from a group consisting of tubules and channel plates.
Claim 10
Dependent Claim
40 words
A display screen as claimed in claim 1 wherein said holding means is a transparent medium formed in a plane to which said channel structures are fixed with said first end thereof facing toward the plane of said transparent medium.
Claim 11
Dependent Claim
28 words
A display screen as claimed in claim 9 and further including a means for removing built up charge from the display screen including a conductive said transparent medium.
Claim 12
Dependent Claim
14 words
A display screen as claimed in claim 9 wherein said transparent medium is glass.
Claim 13
Dependent Claim
14 words
A display screen as claimed in claim 9 wherein said transparent medium is quartz.
Claim 14
Dependent Claim
14 words
A display screen as claimed in claim 9 wherein said transparent medium is sapphire.
Claim 15
Dependent Claim
23 words
A display screen as claimed in claim 9 wherein said transparent medium is selected from a group consisting of glass, quartz and sapphire.
Claim 16
Dependent Claim
49 words
A display screen as claimed in claim 9 wherein said transparent medium is glass, wherein said channel structures are tubules, wherein said cathodoluminscent material is deposited on, in and in between the channel structures, in a preselected region of said channel structure, and wherein said cathodoluminscent material included phosphor.
Claim 17
Dependent Claim
85 words
A display screen comprising: a plurality of channel structures formed into tubules, each said channel structures having a longitudinal axis with a first and second end; means for holding said plurality of channel structures in a plane with the longitudinal axes thereof perpendicular to the plane; and a cathodoluminescent material deposited on, in and in between the channel structures, in a preselected region of the channel structure to cause incident electrons and light generated by the incident electrons to be directed along said channel structures.
Claim 18
Dependent Claim
85 words
A display screen comprising: a plurality of channel structures formed into tubules, each said channel structures having a longitudinal axis with a first and second end; means for holding said plurality of channel structures in a plane with the longitudinal axes thereof perpendicular to the plane; and a cathodoluminescent material deposited on, in and in between the channel structures, in a preselected region of the channel structure to cause incident electrons and light generated by the incident electrons to be directed along said channel structures.
Claim 19
Dependent Claim
91 words
A display device comprising: a display screen including a plurality of channel structures having longitudinal ends, means for holding said plurality of channel structures with the longitudinal ends thereof facing in the same direction, and a cathodoluminescent material deposited on, in, and in between the channel structures, in a preselected region of said channel structure to cause incident electrons and light generated by the incident electrons to be directed along said channel structures; and an addressable electron source means for generating electrons incident on the cathodoluminescent material of selected channel structures.
Claim 20
Dependent Claim
91 words
A display device comprising: a display screen including a plurality of channel structures having longitudinal ends, means for holding said plurality of channel structures with the longitudinal ends thereof facing in the same direction, and a cathodoluminescent material deposited on, in, and in between the channel structures, in a preselected region of said channel structure to cause incident electrons and light generated by the incident electrons to be directed along said channel structures; and an addressable electron source means for generating electrons incident on the cathodoluminescent material of selected channel structures.
Claim 21
Dependent Claim
18 words
A display device as claimed in claim 17 wherein said electron source means includes a field emitter array.
Claim 22
Dependent Claim
19 words
A display device as claimed in claim 17 wherein said electron source means includes a back biased p-n junction.
Claim 23
Dependent Claim
16 words
A display device as claimed in claim 17 wherein said electron source means includes a photoemitter.
Claim 24
Dependent Claim
17 words
A display device as claimed in claim 17 wherein said electron source means includes a metal-insulated-metal emitter.
Claim 25
Dependent Claim
23 words
A display device as claimed in claim 17 wherein said electron source means includes an optically reflecting surface opposite to said display screen.
Claim 26
Dependent Claim
44 words
A display device as claimed in claim 17 wherein said electron source means is selected from a group consisting of a field emitter array, a back biased p-n junction, a photoemitter, a metal-insulator-metal emitter, and an optically reflecting surface opposite to said display screen.
Claim 27
Dependent Claim
16 words
A display device as claimed in claim 17 wherein said addressable electron source are row-column electrodes.
Claim 28
Dependent Claim
19 words
A display device as claimed in claim 17 wherein said addressable electron source are multi-electrode accelerating and retarding electrodes.
Claim 29
Dependent Claim
19 words
A display device as claimed in claim 17 wherein said addressable electron source having accelerating, retarding and deflection electrodes.
Claim 30
Dependent Claim
38 words
A display device as claimed in claim 17 wherein said addressable electron source is selected from a group consisting of row-column electrodes; multi-electrode accelerating and retarding electrodes; accelerating retarding and deflection electrodes; and any combination of these electrodes.
Claim 31
Dependent Claim
40 words
A display device as claimed in claim 17 wherein said holding means includes a transparent medium formed in a plane to which said channel structures are fixed with one longitudinal end thereof facing toward the plane of said transparent medium.
Claim 32
Dependent Claim
55 words
A display device as claimed in claim 17 wherein said electron source means included a field emitter array having a reflective surface adjacent said display screen, wherein said transparent medium is glass, wherein said channel structures are hollow tubules, and wherein said cathodoluminscent material includes phosphor which is on, in, and in between said tubules.
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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) | 1998-01-02 | 1998-07-04 | 1999-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-01-02 | 2002-07-04 | 2003-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-01-02 | 2006-07-04 | 2007-01-03 | $7700.00 | Window Closed / Lapsed |