US3700946A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gaseous display panel with apertured, metallic strip-like, scanning cathodes
Assignee: Unisys Corp
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Filing: 1971-08-20
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Granted: 1972-10-24
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Expires: 1991-08-20
Abstract
Abstract A gas-filled display panel includes a top plate, a bottom plate, an apertured center plate, and a plurality of arrays of electrodes associated therewith. The bottom plate is provided with slots for receiving an array of scanning anode electrodes; an array of scanning cathode electrodes is disposed between the bottom plate and the center plate, and an array of display anode electrodes is disposed between the center plate and the top plate. The electrodes and plates are interrelated to provide upper and lower layers of gas-filled cells. The cathode electrodes comprise metal strips which are elongated and have an array of apertures disposed along their lengths, each aperture providing communication between a cell in the lower layer and a cell in the upper layer. The cathode strips are of sufficient thickness to provide strength and rigidity except for a thinner central portion which extends along, and is aligned with, the array of apertures therein whereby the apertures are of minimum depth.
Inventors
- 👤 Bernard Caras
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:06
CPC Classifications
H; H01; H01J; H01J17/00; H01J17/38; H01J17/48; H01J17/49; H01J17/492; H01J17/494
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
250 words
A display panel comprising a first insulating plate having a top surface and a bottom surface and a plurality of parallel grooves in said top surface, a first electrode seated near the base of each said groove, a plurality of second parallel electrodes spaced from said first electrodes by said first plate and oriented at an angle to said first electrodes so that each second electrode crosses a plurality of first electrodes, each crossing of a first electrode and the second electrode spaced therefrom defining a gas volume which comprises a gas cell, each second electrode comprising a metal strip having a generally rectangular cross-section except for a depression formed along its longitudinal axis, there being an array of apertures formed along said axis in said depression, a second plate having top and bottom surfaces and positioned above and in sandwich relation with said first plate and having a plurality of apertures arrayed in rows and columns, each aperture being aligned with a crossing of a second electrode and a first electrode, third electrodes positioned on thE top surface of said second plate, each aligned with a group of said apertures whereby a portion of each third electrode is aligned with a portion of a second electrode and a portion of a first electrode at each aperture, and a top glass viewing plate covering said third electrodes, said first plate, second plate, and viewing plate being sealed together with an ionizable gas included inside said panel and in said cells.
Claim 2
Dependent Claim
250 words
A display panel comprising a first insulating plate having a top surface and a bottom surface and a plurality of parallel grooves in said top surface, a first electrode seated near the base of each said groove, a plurality of second parallel electrodes spaced from said first electrodes by said first plate and oriented at an angle to said first electrodes so that each second electrode crosses a plurality of first electrodes, each crossing of a first electrode and the second electrode spaced therefrom defining a gas volume which comprises a gas cell, each second electrode comprising a metal strip having a generally rectangular cross-section except for a depression formed along its longitudinal axis, there being an array of apertures formed along said axis in said depression, a second plate having top and bottom surfaces and positioned above and in sandwich relation with said first plate and having a plurality of apertures arrayed in rows and columns, each aperture being aligned with a crossing of a second electrode and a first electrode, third electrodes positioned on thE top surface of said second plate, each aligned with a group of said apertures whereby a portion of each third electrode is aligned with a portion of a second electrode and a portion of a first electrode at each aperture, and a top glass viewing plate covering said third electrodes, said first plate, second plate, and viewing plate being sealed together with an ionizable gas included inside said panel and in said cells.
Claim 3
Dependent Claim
20 words
The panel defined in claim 1 wherein said second electrodes are oriented so that said depressions face said first plate.
Claim 4
Dependent Claim
20 words
The panel defined in claim 1 wherein said second electrodes are oriented so that said depressions face said second plate.
References Cited (Backward Citations)
US3626245A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-24 | 1976-04-24 | 1976-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-24 | 1980-04-24 | 1980-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-24 | 1984-04-24 | 1984-10-24 | $7700.00 | Window Closed / Lapsed |