US3622829A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Improvements in fluorescent screen display panels
Assignee: Panasonic Holdings Corp
•
Filing: 1968-11-22
•
Granted: 1971-11-23
•
Expires: 1988-11-22
Abstract
Abstract A display panel useful for realizing a very thin panel-shaped letter or figure display device or a panel-shaped TV set, wherein the small region of the fluorescent screen may be illuminated by the bombardment of charged particles; the control electrode, formed by providing a plurality of parallel metal electrode sheets on one principal surface of the insulating substrate, a plurality of parallel metal electrode sheets on the other principal surface orthogonal to the direction of arrangement of said former metal electrode sheets and holes penetrating through the insulating substrate at the part where said metal electrode sheets intersect across the insulating substrate, being made to contact the discharge plasma generated between the discharge electrodes; electrons or ions being taken out of the discharge plasma by applying a signal voltage to said metal electrodes of the control electrode and made to pass through the holes selectively, the transparent electrode comprising the fluorescent screen being provided on the side opposite to said discharge plasma with respect to said control electrode in parallel with said electrodes; and the electrons or ions passing through said holes being accelerated and made to collide with the fluorescent screen by the high voltage applied to said transparent electrode.
Inventors
- 👤 Masanori Watanabe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 14:31
CPC Classifications
H; H01; H01J; H01J17/00; H01J17/38; H01J17/48; H01J17/49; H01J17/498; H01J3/00; H01J3/02; H01J3/025
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
218 words
A display panel comprising a panel-shaped discharge tube filled with low-pressure inert gas; a transparent electrode provided on one inner surface of said tube; a fluorescent screen applied on said transparent electrode; control electrode means spaced in parallel with said one inner surface of said discharge tube; and a pair of spaced discharge electrodes for producing a plasma by ionizing said inert gas, said discharge electrodes being placed in a space opposite to said fluorescent screen, said space being defined by said control electrode means and the opposite inner surface of said discharge tube; said control electrode means comprising an insulating substrate having a plurality of holes formed therein, a plurality of first parallel metal electrode sheets on one surface of said insulating substrate and a plurality of second parallel metal electrode sheets on the opposite surface of said substrate which are orthogonal to said first metal electrode sheets, said holes being formed in and through said insulating substrate at the intersections of said first and second metal electrode sheets, both sheets having apertures in correspondence with said holes in said insulating substrate; and further comprising means applying a signal voltage in sequence to said metal electrode sheets of said control electrode means while applying a high voltage between said transparent electrode and each of said discharge electrodes.
Claim 2
Dependent Claim
218 words
A display panel comprising a panel-shaped discharge tube filled with low-pressure inert gas; a transparent electrode provided on one inner surface of said tube; a fluorescent screen applied on said transparent electrode; control electrode means spaced in parallel with said one inner surface of said discharge tube; and a pair of spaced discharge electrodes for producing a plasma by ionizing said inert gas, said discharge electrodes being placed in a space opposite to said fluorescent screen, said space being defined by said control electrode means and the opposite inner surface of said discharge tube; said control electrode means comprising an insulating substrate having a plurality of holes formed therein, a plurality of first parallel metal electrode sheets on one surface of said insulating substrate and a plurality of second parallel metal electrode sheets on the opposite surface of said substrate which are orthogonal to said first metal electrode sheets, said holes being formed in and through said insulating substrate at the intersections of said first and second metal electrode sheets, both sheets having apertures in correspondence with said holes in said insulating substrate; and further comprising means applying a signal voltage in sequence to said metal electrode sheets of said control electrode means while applying a high voltage between said transparent electrode and each of said discharge electrodes.
Claim 3
Dependent Claim
31 words
A display panel according to claim 1, further comprising a subsidiary electrode disposed in parallel with and between said control electrode means and said opposite inner surface of said discharge tube.
Claim 4
Dependent Claim
17 words
A display panel according to claim 1, wherein one of said discharge electrodes is a thermionic cathode.
Claim 5
Dependent Claim
238 words
A display panel comprising a panel-shaped discharge tube filled with low-pressure inert gas; a transparent electrode provided on one inner surface of said tube; a fluorescent screen applied on said transparent electrode; control electrode means spaced in parallel with said one inner surface of said discharge tube; and a pair of spaced discharge electrodes for producing a plasma by ionizing said inert gas, said discharge electrodes being placed in a space opposite to said fluorescent screen, said space being defined by said control electrode means and the opposite inner surface of said discharge tube; said control electrode means comprising an insulating substrate having a plurality of holes formed therein, a plurality of first parallel metal electrode sheets on one surface of said insulating substrate and a plurality of second parallel metal electrode sheets on the opposite surface of said substrate which are orthogonal to said first metal electrode sheets, said holes being formed in and through said insulating substrate at the intersections of said first and second metal electrode sheets, both sheets having apertures in correspondence with said holes in said insulating substrate, wherein a portion of each of said first and second electrode sheets extends into said holes in said insulating substrate; and further comprising means applying a signal voltage in sequence to said metal electrode sheets of said control electrode means while applying a high voltage between said transparent electrode and each of said discharge electrodes.
Claim 6
Dependent Claim
238 words
A display panel comprising a panel-shaped discharge tube filled with low-pressure inert gas; a transparent electrode provided on one inner surface of said tube; a fluorescent screen applied on said transparent electrode; control electrode means spaced in parallel with said one inner surface of said discharge tube; and a pair of spaced discharge electrodes for producing a plasma by ionizing said inert gas, said discharge electrodes being placed in a space opposite to said fluorescent screen, said space being defined by said control electrode means and the opposite inner surface of said discharge tube; said control electrode means comprising an insulating substrate having a plurality of holes formed therein, a plurality of first parallel metal electrode sheets on one surface of said insulating substrate and a plurality of second parallel metal electrode sheets on the opposite surface of said substrate which are orthogonal to said first metal electrode sheets, said holes being formed in and through said insulating substrate at the intersections of said first and second metal electrode sheets, both sheets having apertures in correspondence with said holes in said insulating substrate, wherein a portion of each of said first and second electrode sheets extends into said holes in said insulating substrate; and further comprising means applying a signal voltage in sequence to said metal electrode sheets of said control electrode means while applying a high voltage between said transparent electrode and each of said discharge electrodes.
Claim 7
Dependent Claim
222 words
A display panel comprising a panel-shaped discharge tube filled with low-pressure inert gas; a fluorescent screen applied on one inner surface of said discharge tube; an electrode provided on said fluorescent screen; control electrode means spaced in parallel with said one inner surface of said discharge tube; and a pair of spaced discharge electrodes for producing a plasma by ionizing said inert gas, said discharge electrodes being placed in a space opposite to said fluorescent screen, said space being defined by said control electrode means and the opposite inner surface of said discharge tube; said control electrode means comprising an insulating substrate having a plurality of holes formed therein, a plurality of first parallel metal electrode sheets on one surface of said insulating substrate and a plurality of second parallel metal electrode sheets on the opposite surface of said substrate which are orthogonal to said first metal electrode sheets, said holes being formed in and through said insulating substrate at the intersections of said first and second metal electrode sheets, both sheets having apertures in correspondence with said holes in said insulating substrate; and further comprising means applying a signal voltage in sequence to said metal electrode sheets of said control electrode means while applying a high voltage between said electrode provided on said fluorescent screen and each of said discharge electrodes.
Claim 8
Dependent Claim
222 words
A display panel comprising a panel-shaped discharge tube filled with low-pressure inert gas; a fluorescent screen applied on one inner surface of said discharge tube; an electrode provided on said fluorescent screen; control electrode means spaced in parallel with said one inner surface of said discharge tube; and a pair of spaced discharge electrodes for producing a plasma by ionizing said inert gas, said discharge electrodes being placed in a space opposite to said fluorescent screen, said space being defined by said control electrode means and the opposite inner surface of said discharge tube; said control electrode means comprising an insulating substrate having a plurality of holes formed therein, a plurality of first parallel metal electrode sheets on one surface of said insulating substrate and a plurality of second parallel metal electrode sheets on the opposite surface of said substrate which are orthogonal to said first metal electrode sheets, said holes being formed in and through said insulating substrate at the intersections of said first and second metal electrode sheets, both sheets having apertures in correspondence with said holes in said insulating substrate; and further comprising means applying a signal voltage in sequence to said metal electrode sheets of said control electrode means while applying a high voltage between said electrode provided on said fluorescent screen and each of said discharge electrodes.
Claim 9
Dependent Claim
31 words
A display panel according to claim 5, further comprising a subsidiary electrode disposed in parallel with and between said control electrode means and said opposite inner surface of said discharge tube.
Claim 10
Dependent Claim
17 words
A display panel according to claim 5, wherein one of said discharge electrodes is a thermionic cathode.
Claim 11
Dependent Claim
242 words
A display panel comprising a panel-shaped discharge tube filled with low-pressure inert gas; a fluorescent screen applied on one inner surface of said discharge tube; an electrode provided on said fluorescent screen; control electrode means spaced in parallel with said one inner surface of said discharge tube; and a pair of spaced discharge electrodes for producing a plasma by ionizing said inert gas, said discharge electrodes being placed in a space opposite to said fluorescent screen, said space being defined by said control electrode means and the opposite inner surface of said discharge tube; said control electrode means comprising an insulating substrate having a plurality of holes formed therein, a plurality of first parallel metal electrode sheets on one surface of said insulating substrate and a plurality of second parallel metal electrode sheets on the opposite surface of said substrate which are orthogonal to said first metal electrode sheets, said holes being formed in and through said insulating substrate at the intersections of said first and second metal electrode sheets, both sheets having apertures in correspondence with said holes in said insulating substrate, wherein a portion of each of said first and second electrode sheets extends into said holes in said insulating substrate; and further comprising means applying a signal voltage in sequence to said metal electrode sheets of said control electrode means while applying a high voltage between said electrode provided on said fluorescent screen and each of said discharge electrodes.
Claim 12
Dependent Claim
242 words
A display panel comprising a panel-shaped discharge tube filled with low-pressure inert gas; a fluorescent screen applied on one inner surface of said discharge tube; an electrode provided on said fluorescent screen; control electrode means spaced in parallel with said one inner surface of said discharge tube; and a pair of spaced discharge electrodes for producing a plasma by ionizing said inert gas, said discharge electrodes being placed in a space opposite to said fluorescent screen, said space being defined by said control electrode means and the opposite inner surface of said discharge tube; said control electrode means comprising an insulating substrate having a plurality of holes formed therein, a plurality of first parallel metal electrode sheets on one surface of said insulating substrate and a plurality of second parallel metal electrode sheets on the opposite surface of said substrate which are orthogonal to said first metal electrode sheets, said holes being formed in and through said insulating substrate at the intersections of said first and second metal electrode sheets, both sheets having apertures in correspondence with said holes in said insulating substrate, wherein a portion of each of said first and second electrode sheets extends into said holes in said insulating substrate; and further comprising means applying a signal voltage in sequence to said metal electrode sheets of said control electrode means while applying a high voltage between said electrode provided on said fluorescent screen and each of said discharge electrodes.
Claim 13
Dependent Claim
235 words
A display panel comprising a flat panel-shaped discharge tube filled with low-pressure inert gas; a transparent sheet electrode provided on one longitudinal inner surface of said tube; a fluorescent screen coated on said transparent electrode; control electrode means parallelely spaced from said inner surface and said screen; a mesh-type subsidiary electrode spaced from said control electrode means; opposed cathode and anode discharge electrodes; and a plasma space for ionized inert gas opposite to said screen and defined by said subsidiary electrode, said discharge electrodes and a second longitudinal inner surface of said tube; said control electrode means comprising an insulating substrate having a plurality of holes formed therein, a plurality of first parallel metal electrode sheets on one surface of said substrate, and a plurality of second parallel metal electrode sheets on the opposite surface of said substrate which are arranged orthogonally to said first sheets, said holes being arranged in a matrix penetrating through said substrate at the intersections of said first and second sheets, both sheets having apertures therein in correspondence with said holes; and wherein said display panel is further provided with means for biasing the potential of said subsidiary electrode below the potential of said anode discharge electrode, means for biasing the potentials of said control electrode sheets below the potential of said subsidiary electrode, and a high-voltage supply connected between said transparent sheet electrode and said cathode and anode electrodes.
Claim 14
Dependent Claim
235 words
A display panel comprising a flat panel-shaped discharge tube filled with low-pressure inert gas; a transparent sheet electrode provided on one longitudinal inner surface of said tube; a fluorescent screen coated on said transparent electrode; control electrode means parallelely spaced from said inner surface and said screen; a mesh-type subsidiary electrode spaced from said control electrode means; opposed cathode and anode discharge electrodes; and a plasma space for ionized inert gas opposite to said screen and defined by said subsidiary electrode, said discharge electrodes and a second longitudinal inner surface of said tube; said control electrode means comprising an insulating substrate having a plurality of holes formed therein, a plurality of first parallel metal electrode sheets on one surface of said substrate, and a plurality of second parallel metal electrode sheets on the opposite surface of said substrate which are arranged orthogonally to said first sheets, said holes being arranged in a matrix penetrating through said substrate at the intersections of said first and second sheets, both sheets having apertures therein in correspondence with said holes; and wherein said display panel is further provided with means for biasing the potential of said subsidiary electrode below the potential of said anode discharge electrode, means for biasing the potentials of said control electrode sheets below the potential of said subsidiary electrode, and a high-voltage supply connected between said transparent sheet electrode and said cathode and anode electrodes.
Claim 15
Dependent Claim
255 words
A display panel comprising a flat panel-shaped discharge tube filled with low-pressure inert gas; a transparent sheet electrode provided on one longitudinal inner surface of said tube; a fluorescent screen coated on said transparent electrode; control electrode means parallelely spaced from said inner surface and said screen; a mesh-type subsidiary electrode spaced from said control electrode means; opposed cathode and anode discharge electrodes; and a plasma space for ionized inert gas opposite to said screen and defined by said subsidiary electrode, said discharge electrodes and a second longitudinal inner surface of said tube; said control electrode means comprising an insulating substrate having a plurality of holes formed therein, a plurality of first parallel metal electrode sheets on one surface of said substrate, and a plurality of second parallel metal electrode sheets on the opposite surface of said substrate which are arranged orthogonally to said first sheets, said holes being arranged in a matrix penetrating through said substrate at the intersections of said first and second sheets, both sheets having apertures therein in correspondence with said holes, wherein a portion of each of said first and second electrode sheets extend into said holes in said insulating substrate; and wherein said display panel is further provided with means for biasing the potential of said subsidiary electrode below the potential of said anode discharge electrode, means for biasing the potentials of said control electrode sheets below the potential of said subsidiary electrode, and a high-voltage supply connected between said transparent sheet electrode and said cathode and anode electrodes.
Claim 16
Dependent Claim
255 words
A display panel comprising a flat panel-shaped discharge tube filled with low-pressure inert gas; a transparent sheet electrode provided on one longitudinal inner surface of said tube; a fluorescent screen coated on said transparent electrode; control electrode means parallelely spaced from said inner surface and said screen; a mesh-type subsidiary electrode spaced from said control electrode means; opposed cathode and anode discharge electrodes; and a plasma space for ionized inert gas opposite to said screen and defined by said subsidiary electrode, said discharge electrodes and a second longitudinal inner surface of said tube; said control electrode means comprising an insulating substrate having a plurality of holes formed therein, a plurality of first parallel metal electrode sheets on one surface of said substrate, and a plurality of second parallel metal electrode sheets on the opposite surface of said substrate which are arranged orthogonally to said first sheets, said holes being arranged in a matrix penetrating through said substrate at the intersections of said first and second sheets, both sheets having apertures therein in correspondence with said holes, wherein a portion of each of said first and second electrode sheets extend into said holes in said insulating substrate; and wherein said display panel is further provided with means for biasing the potential of said subsidiary electrode below the potential of said anode discharge electrode, means for biasing the potentials of said control electrode sheets below the potential of said subsidiary electrode, and a high-voltage supply connected between said transparent sheet electrode and said cathode and anode electrodes.
Claim 17
Dependent Claim
23 words
A display panel according to claim 10, further provided with scanning means for supplying information signals to said first and second electrode sheets.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-22 | 1975-05-24 | 1975-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-22 | 1979-05-24 | 1979-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-22 | 1983-05-24 | 1983-11-23 | $7700.00 | Window Closed / Lapsed |