US3889150A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gaseous discharge display panel with scanning anode base plate assembly including resistive masses
Assignee: Unisys Corp
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Filing: 1974-07-30
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Granted: 1975-06-10
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Expires: 1994-07-30
Abstract
Abstract A display panel including an array of gas-filled cells being arranged in upper display and lower scan sections of aligned cells with upper and lower cell pairs separated by a common cathode electrode. The lower scan section is further defined by scanning anode strips applied into slots formed in a lower insulator base plate with discrete resistive masses filling a portion of the slots while bridging a discontinuity in the applied scanning anode provided in a ledge area of the base plate. A common bus formed across the end of the base plate ledge forms a single electrical terminal interconnecting the scanning anodes for connection to an external power supply. In the method of making the display panel a conductive material solution is applied to the floor of the lower insulator base plate slots in an operation that is interrupted for providing the discontinuity therein which is filled by a discrete mass of resistive material paste. The end of the insulator base plate is coated with a conductive material solution which becomes the common bus. The conductive material solution and resistive material paste may be cured at an elevated temperature.
Inventors
- 👤 George John Przybylek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:50
CPC Classifications
H; H01; H01J; H01J17/00; H01J17/38; H01J17/48; H01J17/49; H01J17/492; H01J17/494
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
102 words
A base plate assembly for a gas cell display panel comprising: an insulator base plate having a plurality of slots formed therein with floors for receiving a plurality of scanning anodes; a plurality of scanning anodes disposed on the floors of said slots with a discontinuity provided in each of said scanning anodes; a resistive mass contained within each of said slots and bridging each of said discontinuities; and a common bus provided across one end of said insulator base plate and coupled to said scanning anodes for providing a single terminal for coupling said scanning anodes with an external power supply.
Claim 2
Dependent Claim
102 words
A base plate assembly for a gas cell display panel comprising: an insulator base plate having a plurality of slots formed therein with floors for receiving a plurality of scanning anodes; a plurality of scanning anodes disposed on the floors of said slots with a discontinuity provided in each of said scanning anodes; a resistive mass contained within each of said slots and bridging each of said discontinuities; and a common bus provided across one end of said insulator base plate and coupled to said scanning anodes for providing a single terminal for coupling said scanning anodes with an external power supply.
Claim 3
Dependent Claim
47 words
The gas cell display panel of claim 1 wherein said scanning anodes in said slots extend substantially to the end of said insulator base plate providing an exposed lip portion of the floor of each of said slots and wherein said common bus extends onto said lips.
Claim 4
Dependent Claim
19 words
The gas cell display panel of claim 1 wherein said scanning anodes and said common bus comprise silver palladium.
Claim 5
Dependent Claim
15 words
The gas cell display panel of claim 1 wherein said resistive mass comprises thallium oxide.
Claim 6
Dependent Claim
208 words
A gas cell display panel comprising: an insulator base plate havinG a plurality of slots formed therein, at least some of said slots having floors for receiving a plurality of scanning anodes; a plurality of scanning anodes disposed on the floors of said slots with a discontinuity provided in each of said scanning anodes; a plurality of scanning cathodes seated on said insulator base plate and intersecting the scanning anodes on the floors of said slots, each intersection of said scanning anodes and said scanning cathodes defining a scanning cell; an upper insulator plate having an array of display cells formed therein and aligned with said scanning cells; an array of display anodes disposed on said upper insulator plate and intersecting a plurality of said display cells, said upper insulator plate and said base insulator plate being sealed together to form a sealed display unit; a resistive mass contained within said slots having floors for receiving scanning anodes, and said resistive mass bridging each of said discontinuities formed in said scanning anodes; and a common bus provided across one end of said insulator base plate, said common bus cooperating with said scanning anodes for providing a single terminal for connecting said scanning anodes with an external power supply.
Claim 7
Dependent Claim
208 words
A gas cell display panel comprising: an insulator base plate havinG a plurality of slots formed therein, at least some of said slots having floors for receiving a plurality of scanning anodes; a plurality of scanning anodes disposed on the floors of said slots with a discontinuity provided in each of said scanning anodes; a plurality of scanning cathodes seated on said insulator base plate and intersecting the scanning anodes on the floors of said slots, each intersection of said scanning anodes and said scanning cathodes defining a scanning cell; an upper insulator plate having an array of display cells formed therein and aligned with said scanning cells; an array of display anodes disposed on said upper insulator plate and intersecting a plurality of said display cells, said upper insulator plate and said base insulator plate being sealed together to form a sealed display unit; a resistive mass contained within said slots having floors for receiving scanning anodes, and said resistive mass bridging each of said discontinuities formed in said scanning anodes; and a common bus provided across one end of said insulator base plate, said common bus cooperating with said scanning anodes for providing a single terminal for connecting said scanning anodes with an external power supply.
Claim 8
Dependent Claim
45 words
The gas cell display panel of claim 5 wherein said insulator base plate includes a ledge portion extending beyond said sealed display unit and wherein said scanning anode discontinuities bridged by said resistive masses are disposed in said ledge portion of said insulator base plate.
Claim 9
Dependent Claim
26 words
The gas cell display panel of claim 6 wherein said common bus is provided across the end of said ledge portion of said insulator base plate.
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) | 1978-06-09 | 1978-12-09 | 1979-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-09 | 1982-12-09 | 1983-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-09 | 1986-12-09 | 1987-06-10 | $7700.00 | Window Closed / Lapsed |