US3868543A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Display panel
Assignee: Unisys Corp
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Filing: 1973-07-27
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Granted: 1975-02-25
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Expires: 1993-07-27
Abstract
Abstract A display panel includes a plurality of rows and columns of display cells, each having an anode and a cathode and including a novel drive arrangement for selecting and energizing one cell at a time.
Inventors
- 👤 George Ernest Holz
- 👤 James Alexander Ogle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:27
CPC Classifications
H; H01; H01J; H01J17/00; H01J17/38; H01J17/48; H01J17/49; H01J17/492; H01J17/494; G; G09; G09G; G09G3/00; G09G3/20; G09G3/22; G09G3/28; G09G3/282; G09G3/285
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
133 words
A display panel comprising a plurality of discrete gas-filled cells formed in an insulating matrix, an anode and a cathode electrode coupled to each of said cells for causing the individual cells to glow, and an auxiliary electrode in each of said cells and in contact with the gas therein, each auxiliary electrode comprising a conductive member having an insulating coating on the surface of which an electrical charge can form when excited particles are present in the gas, each said auxiliary electrode having its conductive member extending outside said panel whereby electrical connection can be made thereto and electrical potential can be applied thereto whereby each auxiliary electrode, carrying said electrical charge and said electrical potential, is operable in conjunction with potentials on the associated anode and cathode to operate each cell.
Claim 2
Dependent Claim
133 words
A display panel comprising a plurality of discrete gas-filled cells formed in an insulating matrix, an anode and a cathode electrode coupled to each of said cells for causing the individual cells to glow, and an auxiliary electrode in each of said cells and in contact with the gas therein, each auxiliary electrode comprising a conductive member having an insulating coating on the surface of which an electrical charge can form when excited particles are present in the gas, each said auxiliary electrode having its conductive member extending outside said panel whereby electrical connection can be made thereto and electrical potential can be applied thereto whereby each auxiliary electrode, carrying said electrical charge and said electrical potential, is operable in conjunction with potentials on the associated anode and cathode to operate each cell.
Claim 3
Dependent Claim
31 words
The panel defined in claim 1 wherein said auxiliary electrode comprises a wire having an insulating coating, each said auxiliary electrode being accessible outside said panel for making electrical connection thereto.
Claim 4
Dependent Claim
119 words
A display device comprising a gas-filled cell, an anode and a cathode electrode coupled to said cell for causing said cell to glow, and an auxiliary electrode in said cell and in contact with the gas therein, said auxiliary electrode comprising a conductive member having an insulating coating on the surface of which an electrical charge can form when excited particles are present in the gas, said auxiliary electrode having its conductive member extending outside said panel whereby eletrical connection can be made thereto and electrical potential can be applied thereto whereby such auxiliary electrode, carrying said electrical charge and said electrical potential, is operable in conjunction with potentials on the associated anode and cathode to operate said cell.
Claim 5
Dependent Claim
119 words
A display device comprising a gas-filled cell, an anode and a cathode electrode coupled to said cell for causing said cell to glow, and an auxiliary electrode in said cell and in contact with the gas therein, said auxiliary electrode comprising a conductive member having an insulating coating on the surface of which an electrical charge can form when excited particles are present in the gas, said auxiliary electrode having its conductive member extending outside said panel whereby eletrical connection can be made thereto and electrical potential can be applied thereto whereby such auxiliary electrode, carrying said electrical charge and said electrical potential, is operable in conjunction with potentials on the associated anode and cathode to operate said cell.
Claim 6
Dependent Claim
159 words
A display panel comprising a plurality of discrete gas-filled cells formed in an insulating matrix and arrayed in rows and columns, an anode electrode coupled to each column of cells and a cathode electrode coupled to each row of cells for causing the individual cells to glow by means of potentials applied thereto, and a separate auxiliary electrode in each of said columns of cells and in contact with the gas in each of the cells, each auxiliary electrode comprising a conductive member having an insulating coating on the surface of which an electrical charge can form when excited particles are present in the gas, each said auxiliary electrode having its conductive member extending outside said panel whereby electrical connection can be made thereto and electrical potential can be applied thereto whereby each auxiliary electrode, carrying said electrical charge and said electrical potential, is operable in conjunction with potentials on the associated anode and cathode to operate each cell.
Claim 7
Dependent Claim
159 words
A display panel comprising a plurality of discrete gas-filled cells formed in an insulating matrix and arrayed in rows and columns, an anode electrode coupled to each column of cells and a cathode electrode coupled to each row of cells for causing the individual cells to glow by means of potentials applied thereto, and a separate auxiliary electrode in each of said columns of cells and in contact with the gas in each of the cells, each auxiliary electrode comprising a conductive member having an insulating coating on the surface of which an electrical charge can form when excited particles are present in the gas, each said auxiliary electrode having its conductive member extending outside said panel whereby electrical connection can be made thereto and electrical potential can be applied thereto whereby each auxiliary electrode, carrying said electrical charge and said electrical potential, is operable in conjunction with potentials on the associated anode and cathode to operate each cell.
References Cited (Backward Citations)
US3042823A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-02-24 | 1978-08-26 | 1979-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-24 | 1982-08-26 | 1983-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-24 | 1986-08-26 | 1987-02-25 | $7700.00 | Window Closed / Lapsed |