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US4114064A Expired / Lapsed US ⏱️ 0.0 years remaining

Multiple gaseous discharge display/memory panel having improved voltage characteristics

Assignee: Techneglas LLC
•
Filing: 1972-10-02
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Granted: 1978-09-12
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Expires: 1992-10-02
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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 an array of electrode (conductor) members such that each array of electrode members is insulated from the gaseous medium by a dielectric member, the electrode members behind each dielectric material member being oriented with respect to the electrode members behind the opposing dielectric material member so as to define a plurality of discrete discharge volumes, each discharge volume constituting a discharge unit, the dielectric material being selectively enriched with at least one Group IA or IIA element in an amount sufficient to provide operating voltages which are substantially uniform and which do not significantly change with time.

Inventors

  • 👤 Roger E. Ernsthausen

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-02 14:46
CPC Classifications
H; H01; H01J; H01J11/00; H01J11/10; H01J11/12; H01J11/20; H01J11/34; H01J11/38

Claims Analysis

Total Claims: 4
Claim 1
Independent Claim 133 words
In a gaseous discharge display/memory device comprising an ionizable gaseous medium in a gas chamber formed by a pair of opposed dielectric material members backed by electrode members, the electrode members behind each dielectric material surface being transversely oriented with respect to the electrode members behind the opposing dielectric material surface so as to define a plurality of discharge units, said dielectric material surfaces serving to store charges during each half-cycle of operation, the improvement wherein each dielectric member is selectively enriched with at least one element selected from the group consisting of lithium, sodium, potassium, rubidium, cesium, francium, beryllium, magnesium, calcium, strontium and barium in an amount sufficient to provide gas discharge device operating voltages which are substantially uniform and which do not significantly change with time after a period of aging.
Claim 2
Dependent Claim 133 words
In a gaseous discharge display/memory device comprising an ionizable gaseous medium in a gas chamber formed by a pair of opposed dielectric material members backed by electrode members, the electrode members behind each dielectric material surface being transversely oriented with respect to the electrode members behind the opposing dielectric material surface so as to define a plurality of discharge units, said dielectric material surfaces serving to store charges during each half-cycle of operation, the improvement wherein each dielectric member is selectively enriched with at least one element selected from the group consisting of lithium, sodium, potassium, rubidium, cesium, francium, beryllium, magnesium, calcium, strontium and barium in an amount sufficient to provide gas discharge device operating voltages which are substantially uniform and which do not significantly change with time after a period of aging.
Claim 3
Dependent Claim 37 words
The invention of claim 1 wherein each dielectric member is selectively enriched with about 0.5 weight percent to about 8 weight percent of the element in the oxide state based on the total weight of the dielectric.
Claim 4
Dependent Claim 37 words
The invention of claim 1 wherein each dielectric member is selectively enriched with about 1 weight percent to about 4 weight percent of the element in the oxide state based on the total weight of the dielectric.

References Cited (Backward Citations)

US2020727A Cited
US3189781A Cited
US3559190A Cited
US3499167A Cited
US3846171A Cited
US3863089A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1981-09-11 1982-03-13 1982-09-12 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1985-09-11 1986-03-13 1986-09-12 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1989-09-11 1990-03-13 1990-09-12 $7700.00 Window Closed / Lapsed

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