Patent US3886390A successfully refreshed from Google Patents.
US3886390A
Expired / Lapsed
US
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Buttable, gaseous discharge, display panel including electrodes providing a dot matrix display
Assignee: Unisys Corp
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Filing: 1974-08-29
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Granted: 1975-05-27
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Expires: 1994-08-29
Abstract
Abstract The display panel is a dot matrix panel and comprises relatively large gas-filled cells which are arrayed in rows and columns and are adapted to be energized in different combinations to display characters. The cells are formed by strip-like column cathode electrodes having localized active areas formed therein to comprise the active cathodes, the localized areas of all of the cathodes being arrayed in rows and columns. The cathode electrodes and their localized areas are shaped and spaced apart so that, in the final panel, a suitable seal area is provided and panels can be butted together. An insulated plate having horizontal apertures, each aligned with a row of cells, overlays the cathodes, and a face plate is seated on the insulating plate carrying horizontal anodes formed with localized active areas arrayed in rows and columns, each aligned with one of the cathode areas and each carrying a quantity of a phosphor material. Electrical energization of selected anaodes and cathodes causes selected cells to glow and display a character.
Inventors
- 👤 Thomas C Maloney
- 👤 Rudolph A Cola
- 👤 Ronald O Wescott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 01:28
CPC Classifications
H; H01; H01J; H01J17/00; H01J17/38; H01J17/48; H01J17/49
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
194 words
A display panel comprising a gas-filled envelope including a base plate and face plate hermetically sealed together, a plurality of vertical conductive strips positioned on the top surface of said base plate, a first layer of insulating material covering said conductive strips and including first apertures disposed in series along each of said conductive strips, each first aperture exposing a dot-like portion of the associated strip which is operable as a cathode electrode, said dot-like cathode electrodes being arrayed in rows and columns, a second layer of insulated material on said first layer and having a plurality of horizontal slots, each aligned with a row of said cathode electrodes, a plurality of horizontal strips of transparent conductive material on the inner surface of said face plate, each such strip overlaying one of said horizontal slots in said second layer, and an opaque conductive layer on each of said horizontal strips and having a series of second apertures therein, each second aperture exposing a dot-like area of its horizontal strip which is operable as an anode electrode, each such anode electrode being vertically aligned with and in operative relation with one of said cathode electrodes.
Claim 2
Dependent Claim
194 words
A display panel comprising a gas-filled envelope including a base plate and face plate hermetically sealed together, a plurality of vertical conductive strips positioned on the top surface of said base plate, a first layer of insulating material covering said conductive strips and including first apertures disposed in series along each of said conductive strips, each first aperture exposing a dot-like portion of the associated strip which is operable as a cathode electrode, said dot-like cathode electrodes being arrayed in rows and columns, a second layer of insulated material on said first layer and having a plurality of horizontal slots, each aligned with a row of said cathode electrodes, a plurality of horizontal strips of transparent conductive material on the inner surface of said face plate, each such strip overlaying one of said horizontal slots in said second layer, and an opaque conductive layer on each of said horizontal strips and having a series of second apertures therein, each second aperture exposing a dot-like area of its horizontal strip which is operable as an anode electrode, each such anode electrode being vertically aligned with and in operative relation with one of said cathode electrodes.
Claim 3
Dependent Claim
29 words
The panel defined in claim 1 and including a phosphor material in each of said second apertures in contact with at least a portion of the anode electrode therein.
Claim 4
Dependent Claim
22 words
The panel defined in claim 2 wherein said phosphor material is provided as concentric rings between which the anode electrode is exposed.
Claim 5
Dependent Claim
15 words
The panel defined in claim 1 wherein said first apertures are generally oval in shape.
Claim 6
Dependent Claim
61 words
The panel defined in claim 1 wherein said vertical strips include a first, a last, and intermediate strips, the spacing between a plurality of said intermediate strips being smaller than the spacing between others of said strips whereby sufficient spacing may be provided between the first and last strip and the adjacent edges of said panel to form an hermetic seal.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-05-26 | 1978-11-25 | 1979-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-26 | 1982-11-25 | 1983-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-26 | 1986-11-25 | 1987-05-27 | $7700.00 | Window Closed / Lapsed |