US3934172A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flat discharge panel using D.C. discharge, and method of driving the same
Assignee: Hitachi Ltd
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Filing: 1974-12-12
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Granted: 1976-01-20
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Expires: 1994-12-12
Abstract
Abstract A flat discharge panel comprises a plurality of cathodes parallel to one another, a plurality of intermediate electrodes each of which intersects the cathodes, and has holes at parts intersecting with the respective cathodes and which are parallel to one another. Anodes are disposed on the sides of the intermediate electrodes remote from the cathodes in a manner to be respectively parallel with the cathodes and auxiliary discharge spaces are provided for the respective cathodes. Main discharge spaces are provided in the anodes in correspondence with the respective priming holes of the intermediate electrodes, so that principally electrons in plasma, created in the auxiliary discharge space, are diffused and accelerated into the main discharge space. A method of driving the flat discharge panel including scanning, based on the transfer of the glow of the auxiliary discharge, is carried out by the use of the intermediate electrodes.
Inventors
- 👤 Yukio Okamoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:41
CPC Classifications
H; H01; H01J; H01J17/00; H01J17/38; H01J17/48; H01J17/49; H01J17/492; H01J17/494
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
122 words
A flat discharge panel comprising: a plurality of cathodes which are parallel to one another; a plurality of parallel intermediate electrodes the projection of each of which intersects said cathodes, each of said intermediate electrodes having priming holes respectively corresponding to its projection upon said cathodes; parallel anodes which are disposed on the sides of said intermediate electrodes remote from said cathodes in a manner to be respectively parallel to said cathodes; auxiliary discharge spaces provided for the corresponding cathodes and each of which is common to said intermediate electrodes; main discharge spaces provided in said anodes in correspondence with the respective priming holes in said intermediate electrodes; and a gas which is hermetically contained in said main and auxiliary discharge spaces.
Claim 2
Dependent Claim
122 words
A flat discharge panel comprising: a plurality of cathodes which are parallel to one another; a plurality of parallel intermediate electrodes the projection of each of which intersects said cathodes, each of said intermediate electrodes having priming holes respectively corresponding to its projection upon said cathodes; parallel anodes which are disposed on the sides of said intermediate electrodes remote from said cathodes in a manner to be respectively parallel to said cathodes; auxiliary discharge spaces provided for the corresponding cathodes and each of which is common to said intermediate electrodes; main discharge spaces provided in said anodes in correspondence with the respective priming holes in said intermediate electrodes; and a gas which is hermetically contained in said main and auxiliary discharge spaces.
Claim 3
Dependent Claim
19 words
The flat discharge panel according to claim 1, wherein a fluorescent substance is disposed within said main discharge spaces.
Claim 4
Dependent Claim
23 words
The flat discharge panel according to claim 1, wherein a substance having a large coefficient of electron emission is disposed upon said cathodes.
Claim 5
Dependent Claim
17 words
The flat discharge panel according to claim 1, wherein said main discharge spaces are substantially conically shaped.
Claim 6
Dependent Claim
29 words
The flat discharge panel according to claim 4, wherein the diameter of said substantially conically shaped discharge spaces increases in the direction from said priming holes toward said anodes.
Claim 7
Dependent Claim
145 words
A flat discharge panel comprising: an insulating substrate which has a plurality of slots parallel to one another, each slot forming an auxiliary discharge space; cathodes respectively provided in said plurality of slots; intermediate electrodes the projections of which intersect said cathodes and which have holes at the respective intersecting parts; anodes provided in parallel to said cathodes and which are disposed in correspondence with the hole parts of said intermediate electrodes; an insulating plate provided between said intermediate electrodes and said anodes and which has penetrating holes in places corresponding to said priming hole parts of said intermediate electrodes; a transparent insulating substrate disposed on said anodes; and a gas hermetically contained in main discharge spaces, formed by said penetrating holes, and said auxiliary discharge spaces; whereby electrons in an auxiliary discharge, produced in said auxiliary discharge space, diffuse into said main discharge space.
Claim 8
Dependent Claim
145 words
A flat discharge panel comprising: an insulating substrate which has a plurality of slots parallel to one another, each slot forming an auxiliary discharge space; cathodes respectively provided in said plurality of slots; intermediate electrodes the projections of which intersect said cathodes and which have holes at the respective intersecting parts; anodes provided in parallel to said cathodes and which are disposed in correspondence with the hole parts of said intermediate electrodes; an insulating plate provided between said intermediate electrodes and said anodes and which has penetrating holes in places corresponding to said priming hole parts of said intermediate electrodes; a transparent insulating substrate disposed on said anodes; and a gas hermetically contained in main discharge spaces, formed by said penetrating holes, and said auxiliary discharge spaces; whereby electrons in an auxiliary discharge, produced in said auxiliary discharge space, diffuse into said main discharge space.
Claim 9
Dependent Claim
20 words
A flat discharge panel according to claim 6, wherein said penetrating holes in said insulating plates are substantially conically shaped.
Claim 10
Dependent Claim
26 words
A flat discharge panel according to claim 7, wherein the diameter of said penetrating holes increases in the direction from said intermediate electrodes toward said anodes.
Claim 11
Independent Claim
156 words
A method of driving a flat discharge panel, said panel including a plurality of cathodes which are parallel to one another; a plurality of parallel intermediate electrodes the projection of each of which intersects said cathodes, each of said intermediate electrodes having priming holes respectively corresponding to said cathodes; parallel anodes which are arranged on the sides of said intermediate electrodes remote from said cathodes in a manner to be respectively parallel to said cathodes; auxiliary discharge spaces provided for the corresponding cathodes and each of which is common to said intermediate electrodes; main discharge spaces provided in said anodes in correspondence with the respective priming holes in said intermediate electrodes; and a gas which is hermetically contained in said main and auxiliary discharge spaces; said method comprising the step of applying a predetermined D.C. voltage to said cathodes, and sequentially applying a scanning voltage to said intermediate electrodes, to transfer the glow of auxiliary discharge.
Claim 12
Independent Claim
156 words
A method of driving a flat discharge panel, said panel including a plurality of cathodes which are parallel to one another; a plurality of parallel intermediate electrodes the projection of each of which intersects said cathodes, each of said intermediate electrodes having priming holes respectively corresponding to said cathodes; parallel anodes which are arranged on the sides of said intermediate electrodes remote from said cathodes in a manner to be respectively parallel to said cathodes; auxiliary discharge spaces provided for the corresponding cathodes and each of which is common to said intermediate electrodes; main discharge spaces provided in said anodes in correspondence with the respective priming holes in said intermediate electrodes; and a gas which is hermetically contained in said main and auxiliary discharge spaces; said method comprising the step of applying a predetermined D.C. voltage to said cathodes, and sequentially applying a scanning voltage to said intermediate electrodes, to transfer the glow of auxiliary discharge.
Claim 13
Independent Claim
169 words
A method of driving a flat discharge panel, said panel including an insulating substate which has a plurality of slots parallel to one another, each slot forming an auxiliary discharge space; cathodes which are respectively provided in said plurality of slots; intermediate electrodes the projections of which intersect said cathodes and which have priming holes at the respective intersecting parts; anodes provided in parallel to said cathodes and which are disposed in correspondence with the hole parts of said intermediate electrodes; an insulating plate between said intermediate electrodes and said anodes and which has penetrating holes in places corresponding to said hole parts of said intermediate electrodes; a transparent insulating substrate disposed on said anodes; and a gas which is hermetically contained in main discharge spaces, formed by said penetrating holes, and said auxiliary discharge spaces; said method comprising the steps of applying a predetermined D.C. voltage to said cathodes, and sequentially applying a scanning pulse voltage to said intermediate electrodes, to transfer the glow discharge of auxiliary discharge.
Claim 14
Independent Claim
169 words
A method of driving a flat discharge panel, said panel including an insulating substate which has a plurality of slots parallel to one another, each slot forming an auxiliary discharge space; cathodes which are respectively provided in said plurality of slots; intermediate electrodes the projections of which intersect said cathodes and which have priming holes at the respective intersecting parts; anodes provided in parallel to said cathodes and which are disposed in correspondence with the hole parts of said intermediate electrodes; an insulating plate between said intermediate electrodes and said anodes and which has penetrating holes in places corresponding to said hole parts of said intermediate electrodes; a transparent insulating substrate disposed on said anodes; and a gas which is hermetically contained in main discharge spaces, formed by said penetrating holes, and said auxiliary discharge spaces; said method comprising the steps of applying a predetermined D.C. voltage to said cathodes, and sequentially applying a scanning pulse voltage to said intermediate electrodes, to transfer the glow discharge of auxiliary discharge.
References Cited (Backward Citations)
US3771008A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-01-19 | 1979-07-21 | 1980-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-01-19 | 1983-07-21 | 1984-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-01-19 | 1987-07-21 | 1988-01-20 | $7700.00 | Window Closed / Lapsed |