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US3786474A Expired / Lapsed US ⏱️ 0.0 years remaining

Conditioning and writing of multiple gas discharge panel

Assignee: OI Glass Inc
•
Filing: 1972-03-13
•
Granted: 1974-01-15
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Expires: 1992-03-13
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Abstract

Abstract There is disclosed the improved electronic conditioning and addressing of a multiple gas discharge display/memory panel. In the operation of a row-column gas discharge display/memory panel which comprises a discharge cell matrix wherein one or more discharge cells are to-be-addressed along a common row or column and wherein the border of the panel matrix comprises a plurality of pilot cells, the improvement wherein the to-be-addressed cells are electronically conditioned before addressing by applying a conditioning voltage pulse to the common row or column of to-beaddressed cells and wherein a low impedance electrical path is provided between the conditioned row or column of cells and all of the rows or columns of cells orthogonal to the conditioned row or column so as to return the conditioned cells to a neutral state, the magnitude of the conditioning pulse being sufficient to cause discharge of cells in the off-state, but not sufficient to cause discharge of cells in the on-state, and simultaneously applying an addressing voltage to each conditioned to-beaddressed cell immediately after the conditioning voltage pulse without returning the to-be-addressed cell to a neutral state.

Inventors

  • 👤 J Miller

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-25 16:59
CPC Classifications
H; H01; H01J; H01J11/00; H01J11/10; H01J11/12

Claims Analysis

Total Claims: 5
Claim 1
Independent Claim 188 words
In a process for operating a multiple gaseous discharge display/memory panel containing an ionizable gaseous medium and having a plurality of discharge cells formed by a series of transversely positioned electrodes, the discharge cells being geometrically arranged in a metrix of rows and columns, and wherein one or more cells are to-be-addressed along a common row or column or cells and wherein the border of the panel matrix comprises a plurality of pilot cells. the improvement which comprises applying a conditioning voltage pulse to the common row or column of to-be-addressed cells and then providing a low impedance electrical path between the conditioned row or column of cells and all of the rows or columns of cells orthogonal to the conditioned row or column so as to return the conditioned cells to a neutral state, the magnitude of the conditioning pulse being sufficient to cause discharge of cells in the off-state, but not sufficient to cause discharge of cells in the on-state, and simultaneously applying an addressing voltage to each conditioned to-beaddressed cell immediately after the conditioning voltage pulse without returning the to-be-addressed cell to a neutral state.
Claim 2
Dependent Claim 188 words
In a process for operating a multiple gaseous discharge display/memory panel containing an ionizable gaseous medium and having a plurality of discharge cells formed by a series of transversely positioned electrodes, the discharge cells being geometrically arranged in a metrix of rows and columns, and wherein one or more cells are to-be-addressed along a common row or column or cells and wherein the border of the panel matrix comprises a plurality of pilot cells. the improvement which comprises applying a conditioning voltage pulse to the common row or column of to-be-addressed cells and then providing a low impedance electrical path between the conditioned row or column of cells and all of the rows or columns of cells orthogonal to the conditioned row or column so as to return the conditioned cells to a neutral state, the magnitude of the conditioning pulse being sufficient to cause discharge of cells in the off-state, but not sufficient to cause discharge of cells in the on-state, and simultaneously applying an addressing voltage to each conditioned to-beaddressed cell immediately after the conditioning voltage pulse without returning the to-be-addressed cell to a neutral state.
Claim 3
Dependent Claim 15 words
The invention of claim 1 wherein the gaseous medium comprises at least one rare gas.
Claim 4
Dependent Claim 23 words
The invention of claim 1 wherein the gas medium comprises at least two rare gases selected from neon, argon, radon, krypton, and xenon.
Claim 5
Dependent Claim 22 words
The invention of claim 3 wherein the gas medium contains beneficial amounts of at least one member selected from helium and mercury.

References Cited (Backward Citations)

US3559190A Cited
US3499167A Cited
US3618071A Cited
US3590315A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1977-01-14 1977-07-16 1978-01-15 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1981-01-14 1981-07-16 1982-01-15 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1985-01-14 1985-07-16 1986-01-15 $7700.00 Window Closed / Lapsed

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