Patent US4333040A successfully refreshed from Google Patents.
US4333040A
Expired / Lapsed
US
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Gas discharge display device
Assignee: Hitachi Ltd
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Filing: 1979-06-19
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Granted: 1982-06-01
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Expires: 1999-06-19
Abstract
Abstract A gas discharge display device comprising alternately disposed anodes and cathodes, wherein the anodes and the cathodes are interconnected respectively in multi-phase connections whereby a bar-graph display can be effected by means of a self-scanning function.
Inventors
- 👤 Yukio Okamoto
- 👤 Eisuke Mitani
- 👤 Tadao Okabe
- 👤 Atsushi Sumioka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:57
CPC Classifications
H; H01; H01J; H01J17/00; H01J17/38; H01J17/48; H01J17/49; H01J17/492; H01J17/494
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
123 words
A DC type gas discharge display device comprising a plurality of anodes on one surface of a substrate juxtaposed in a relationship spaced from each other, a plurality of cathodes disposed between said anodes, opposite to said anodes and in a relationship spaced therefrom so that said anodes and cathodes are alternately arranged on said one surface of said substrate to form a row in which said anodes alternate with said cathodes, first means for multi-phase connecting said anodes along said row, and second means for multi-phase connecting said cathodes along said row, whereby discharge produced between a selected one of said cathodes along said row and a selected one of anodes along said row is self-scanned in accordance with the multi-phase connections.
Claim 2
Dependent Claim
123 words
A DC type gas discharge display device comprising a plurality of anodes on one surface of a substrate juxtaposed in a relationship spaced from each other, a plurality of cathodes disposed between said anodes, opposite to said anodes and in a relationship spaced therefrom so that said anodes and cathodes are alternately arranged on said one surface of said substrate to form a row in which said anodes alternate with said cathodes, first means for multi-phase connecting said anodes along said row, and second means for multi-phase connecting said cathodes along said row, whereby discharge produced between a selected one of said cathodes along said row and a selected one of anodes along said row is self-scanned in accordance with the multi-phase connections.
Claim 3
Dependent Claim
48 words
A gas discharge display device as claimed in claim 1, wherein each of said cathodes is provided with a resistor element connected in series therewith so that a voltage difference between a discharge-starting voltage and a minimum discharge-maintaining voltage developed by said resistor element provides a memory function.
Claim 4
Dependent Claim
28 words
A gas discharge device as claimed in claim 1 or 2, wherein the row of alternating anodes and cathodes forms a display row for a bar graph display.
Claim 5
Dependent Claim
158 words
A DC type gas discharge display device comprising first and second dielectric plates at least one of which is transparent, a plurality of anodes on one surface of said first plate juxtaposed in a relationship spaced from each other, a plurality of cathodes on said one surface of said first plate disposed between said anodes, opposite to said anodes and in a relationship spaced therefrom so that said anodes and cathodes are alternately arranged on said one surface of said first plate to form a row in which said anodes alternate with said cathodes, first means for multi-phase connecting said anodes along said row, second means for multi-phase connecting said cathodes along said row, insulating means inserted between said one surface of said first plate and said second plate to define a discharge space in which discharge between said anodes and cathodes is established, and discharge gas hermetically contained in said discharge space, wherein the discharge is self-scanned.
Claim 6
Dependent Claim
158 words
A DC type gas discharge display device comprising first and second dielectric plates at least one of which is transparent, a plurality of anodes on one surface of said first plate juxtaposed in a relationship spaced from each other, a plurality of cathodes on said one surface of said first plate disposed between said anodes, opposite to said anodes and in a relationship spaced therefrom so that said anodes and cathodes are alternately arranged on said one surface of said first plate to form a row in which said anodes alternate with said cathodes, first means for multi-phase connecting said anodes along said row, second means for multi-phase connecting said cathodes along said row, insulating means inserted between said one surface of said first plate and said second plate to define a discharge space in which discharge between said anodes and cathodes is established, and discharge gas hermetically contained in said discharge space, wherein the discharge is self-scanned.
Claim 7
Dependent Claim
22 words
A gas discharge display device as claimed in claim 4, wherein said discharge gas includes mainly He with an addition of Xe.
Claim 8
Dependent Claim
47 words
A gas discharge device as claimed in claim 4, wherein each of said cathodes is provided with a resistor element connected in series therewith so that a voltage difference between a discharge-starting voltage and a minimum discharge-maintaining voltage developed by said resistor element provides a memory function.
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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) | 1985-05-31 | 1985-11-30 | 1986-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-05-31 | 1989-11-30 | 1990-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-05-31 | 1993-11-30 | 1994-06-01 | $7700.00 | Window Closed / Lapsed |