Patent US3739218A successfully refreshed from Google Patents.
US3739218A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Display panel having metal cell sheet
Assignee: Unisys Corp
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Filing: 1970-11-16
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Granted: 1973-06-12
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Expires: 1990-11-16
Abstract
Abstract A display device including a plurality of communicating gasfilled display cells arrayed in a panel structure. A first layer includes a first plate having grooves in it, with first electrodes seated in the grooves, and second electrodes supported across them. A second layer includes a metal plate or sheet electrode having apertures in it and being insulated from the second electrodes and from third electrodes which are disposed above it. The first and second electrodes cross beneath the apertures and the third electrodes lie above the apertures, which serve as the display cells of the device.
Inventors
- 👤 T Maloney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:50
CPC Classifications
H; H01; H01J; H01J17/00; H01J17/38; H01J17/48; H01J17/49; H01J17/492; H01J17/494
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
181 words
A display panel comprising a first insulating plate having top and bottom surfaces, a plurality a first elongated electrodes disposed parallel to each other along the top surface thereof, a plurality of second electrodes spaced from the first electrodes and oriented at an angle to said first electrodes and crossing a plurality of them, a flat conductive member spaced from the second electrodes and having a plurality of apertures arrayed in a matrix, each aperture being aligned with a crossing of a second electrode and a first electrode and defining a gas cell, a plurality of third electrodes spaced from the conductive member and from the second electrodes in alignment with a group of said apertures and the portions of the first and second electrodes which cross beneath them, a second insulating plate situated parallel to the first plate, one of which being light transmissive, with the electrodes and the conductive member positioned between them, and a gaseous atmosphere sealed in the region between the insulating plates and including an ionizable gas at a pressure capable of sustaining cathode glow discharge.
Claim 2
Dependent Claim
181 words
A display panel comprising a first insulating plate having top and bottom surfaces, a plurality a first elongated electrodes disposed parallel to each other along the top surface thereof, a plurality of second electrodes spaced from the first electrodes and oriented at an angle to said first electrodes and crossing a plurality of them, a flat conductive member spaced from the second electrodes and having a plurality of apertures arrayed in a matrix, each aperture being aligned with a crossing of a second electrode and a first electrode and defining a gas cell, a plurality of third electrodes spaced from the conductive member and from the second electrodes in alignment with a group of said apertures and the portions of the first and second electrodes which cross beneath them, a second insulating plate situated parallel to the first plate, one of which being light transmissive, with the electrodes and the conductive member positioned between them, and a gaseous atmosphere sealed in the region between the insulating plates and including an ionizable gas at a pressure capable of sustaining cathode glow discharge.
Claim 3
Dependent Claim
37 words
The display panel of claim 1 wherein the first insulating plate has a plurality of parallel grooves therein extending down from the top surface and each of the first electrodes is disposed in one of said grooves.
Claim 4
Dependent Claim
48 words
The display panel of claim 1 wherein the second electrodes comprise a plurality of flat conductors which substantially cover the associated apertures in said flat conductive member except for a small opening or an aperture in them at each gas cell to allow for priming of the cells.
Claim 5
Dependent Claim
24 words
The display panel of claim 1 wherein the flat conductive member carries an insulating layer which spaces it from the second and third electrodes.
Claim 6
Dependent Claim
35 words
The display panel of claim 1 wherein the third electrodes are elongated and are oriented in the same direction as the first electrodes, the second electrodes being elongated and crossing at least some of them.
Claim 7
Dependent Claim
44 words
The display panel defined in claim 5 wherein the first and third electrodes comprise conductive wires and the second electrodes comprise elongated flat strips having apertures at the regions where the second electrodes cross the first electrodes to allow for priming of the cells.
Claim 8
Dependent Claim
40 words
The display panel of claim 1 wherein the flat conductive member comprises an apertured metal sheet electrode carrying an insulating layer on its top and bottom surfaces and having an electrode terminal adapted for connection to biasing or monitoring apparatus.
Claim 9
Dependent Claim
113 words
A display device having a plurality of gas-filled display cells adapted to be energized singly or in groups to display a character or message comprising: insulated housing means containing a gaseous atmosphere at a pressure capable of sustaining cathode glow discharge and having a light-transmitting window, a conductive member situated in said housing and having a plurality of apertures spaced apart in at least one surface thereof for defining individual display cells, first and second electrode means associated with each of the cells for recurrently ionizing the gas adjacent them, and third electrode means associated with the display cells for selectively ionizing the gas in the cells and causing glow discharge in them.
Claim 10
Dependent Claim
113 words
A display device having a plurality of gas-filled display cells adapted to be energized singly or in groups to display a character or message comprising: insulated housing means containing a gaseous atmosphere at a pressure capable of sustaining cathode glow discharge and having a light-transmitting window, a conductive member situated in said housing and having a plurality of apertures spaced apart in at least one surface thereof for defining individual display cells, first and second electrode means associated with each of the cells for recurrently ionizing the gas adjacent them, and third electrode means associated with the display cells for selectively ionizing the gas in the cells and causing glow discharge in them.
Claim 11
Dependent Claim
29 words
The display device of claim 8 wherein the first and second electrodes comprise elongated conductors which cross each other at an angle adjacent the apertures in said conductive member.
Claim 12
Dependent Claim
50 words
The display device of claim 8 wherein the conductive membEr comprises a flat sheet having apertures through it, the first and second electrode means comprising a set of anodes spaced from one side of the sheet and the third electrode means being situated adjacent the other side of the sheet.
Claim 13
Dependent Claim
37 words
The display device of claim 8 wherein the conductive member comprises a flat metal sheet having apertures through it with larger openings adjacent the third electrode means than the openings adjacent the first and second electrode means.
Claim 14
Dependent Claim
26 words
The display device of claim 8 wherein the conductive member comprises a flat conductive layer carrying an insulating layer which spaces it from the electrode means.
Claim 15
Dependent Claim
54 words
The display device of claim 8 wherein the conductive member comprises an apertured metal sheet bearing an insulating coating on both sides, the first and second electrode means crossing each other at the cells adjacent one side of the sheet and the third electrode means being situated adjacent the other side of the sheet.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-06-11 | 1976-12-11 | 1977-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-11 | 1980-12-11 | 1981-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-11 | 1984-12-11 | 1985-06-12 | $7700.00 | Window Closed / Lapsed |