US3989982A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple gaseous discharge display/memory panel having decreased operating voltages
Assignee: OI Glass Inc
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Filing: 1974-04-23
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Granted: 1976-11-02
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Expires: 1994-04-23
Abstract
Abstract There is disclosed a multiple gaseous discharge display/memory panel having an electrical memory and capable of producing a visual display, the panel being characterized by an ionizable gaseous medium in a gas chamber formed by a pair of opposed dielectric material charge storage members which are respectively backed by a series of parallel-like conductor (electrode) members, the conductor members behind each dielectric material member being transversely oriented with respect to the conductor members behind the opposing dielectric material member so as to define a plurality of discrete discharge volumes constituting a discharge unit, the dielectric having at least one electron emissive substance applied to the surface thereof in an amount sufficient to decrease the operating voltages of the panel. Typical electron emissive substances contemplated include Group IA elements, Group IA oxides, barium, GaAs, GaP, InAs, InSb, InP, NiO, CsF, CsI, AgOCs, and AuOCs.
Inventors
- 👤 Robert F. Schaufele
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:57
CPC Classifications
H; H01; H01J; H01J17/00; H01J17/38; H01J17/48; H01J17/49; H01J17/492
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
94 words
In a gaseous discharge display/memory device characterized by an ionizable gaseous medium in a gas chamber formed by a pair of dielectric material bodies having opposed charge storage surfaces, the improvement wherein each dielectric surface is coated with at least one electron emissive substance having a thickness of at least about 100 angstrom units to provide substantially decreased operating voltages without substantially affecting the memory margin of said device, said electron emissive substance being selected from Group IA elements, Group IA oxides, barium, GaAs, GaP, InAs, InSb, InP, NiO, CsF, CsI, AgOCs, and AuOCs.
Claim 2
Dependent Claim
94 words
In a gaseous discharge display/memory device characterized by an ionizable gaseous medium in a gas chamber formed by a pair of dielectric material bodies having opposed charge storage surfaces, the improvement wherein each dielectric surface is coated with at least one electron emissive substance having a thickness of at least about 100 angstrom units to provide substantially decreased operating voltages without substantially affecting the memory margin of said device, said electron emissive substance being selected from Group IA elements, Group IA oxides, barium, GaAs, GaP, InAs, InSb, InP, NiO, CsF, CsI, AgOCs, and AuOCs.
Claim 3
Dependent Claim
44 words
The invention of claim 1 wherein the electron emissive substance is a combination of at least one member selected from the group consisting of GaAs, GaP, InAs, InSb and InP, and one member selected from the group consisting of Cs and Cs 2 O.
Claim 4
Dependent Claim
35 words
The invention of claim 1 wherein the electron emissive substance is present on the dielectric charge storage surfaces in an amount sufficient to decrease the operating voltage of said device by at least 50 percent.
Claim 5
Dependent Claim
162 words
A gas discharge display/memory device comprising in combination, a pair of spaced-apart non-conductive support members, a pair of conductor arrays arranged one on each of the confronting surfaces of said support members, the arrays being in transverse relative orientation so as to provide a series of cross-points therebetween, each defining a discharge unit, a thin dielectric material coating on the confronting surfaces of each of the support members and conductor arrays defining therebetween a sealed gas chamber with said discharge units in open photonic communication, an ionizable gaseous medium contained in said chamber, said dielectric material coating being adapted to insulate said conductor arrays from said ionizable gaseous medium contained in said chamber and for storing charges emitted by gaseous discharge, and at least one electron emissive substance on the confronting surfaces of said dielectric material coatings, said electron emissive substance being present in an amount sufficient to provide substantially decreased operating voltages without substantially affecting the memory margin of said device.
Claim 6
Dependent Claim
162 words
A gas discharge display/memory device comprising in combination, a pair of spaced-apart non-conductive support members, a pair of conductor arrays arranged one on each of the confronting surfaces of said support members, the arrays being in transverse relative orientation so as to provide a series of cross-points therebetween, each defining a discharge unit, a thin dielectric material coating on the confronting surfaces of each of the support members and conductor arrays defining therebetween a sealed gas chamber with said discharge units in open photonic communication, an ionizable gaseous medium contained in said chamber, said dielectric material coating being adapted to insulate said conductor arrays from said ionizable gaseous medium contained in said chamber and for storing charges emitted by gaseous discharge, and at least one electron emissive substance on the confronting surfaces of said dielectric material coatings, said electron emissive substance being present in an amount sufficient to provide substantially decreased operating voltages without substantially affecting the memory margin of said device.
Claim 7
Dependent Claim
25 words
The invention of claim 4 wherein the thickness of said electron emissive substance on said dielectric material coating is at least about 100 angstrom units.
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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) | 1979-11-02 | 1980-05-03 | 1980-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-11-02 | 1984-05-03 | 1984-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-11-02 | 1988-05-03 | 1988-11-02 | $7700.00 | Window Closed / Lapsed |