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US4333040A Expired / Lapsed US ⏱️ 0.0 years remaining

Gas discharge display device

Assignee: Hitachi Ltd
•
Filing: 1979-06-19
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Granted: 1982-06-01
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Expires: 1999-06-19
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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.

References Cited (Backward Citations)

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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

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