US4529909A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas discharge display panel
Assignee: Okaya Electric Industry Co Ltd
•
Filing: 1983-03-03
•
Granted: 1985-07-16
•
Expires: 2003-03-03
Abstract
Abstract A gas discharge display panel for a large screen display in which the display brightness and emission efficiency are very high, the display accuracy is high, and is simple to construct. Cathode electrodes having openings forming discharge cells are arranged in parallel on a front plate and a number of anode electrodes are arranged in parallel on a rear plate orthogonal to the cathode electrodes. Each opening in the cathode electrodes may be rectangular, substantially rectangular or circular. The length of one side of a rectangular opening or the diameter of a circular opening is set to satisfy 40λ e ≦D≦500λ e while the thickness of the cathode electrode is 10λ e ≦T≦100λ e , where λ e is the mean free path of electrons in a gas sealed in the display panel.
Inventors
- 👤 Takeo Kamegaya
- 👤 Tadahiko Sekigawa
- 👤 Hiroshi Kurakami
- 👤 Yoshiro Suzuki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:06
CPC Classifications
H; H01; H01J; H01J17/00; H01J17/38; H01J17/48; H01J17/49
Claims Analysis
Total Claims: 37
Claim 1
Independent Claim
192 words
A gas discharge display panel comprising: a front plate and a rear plate disposed opposite one another and forming opposed outer walls of a vacuum container, said front and rear plates being made of an insulating material, a plurality of parallel grooves being formed in an inner surface of said rear plate with elongated banks being formed between adjacent grooves; a plurality of parallel anode electrodes, one of said anode electrodes being disposed in each of said parallel grooves; and a plurality of parallel cathode electrodes disposed on an inner surface of said front plate orthogonal to said anode electrodes, said cathode electrodes having openings formed therein at intersections of said cathode electrodes and said anode electrodes, recesses being formed in said front plate at said intersections of said anode electrodes and said cathode electrodes, means disposed on said cover plate extending parallel to said cathode electrodes to align said cathode electrodes and prevent contact with each other, and wherein a thickness T of said cathode electrodes is defined by 10λ e ≦T≦100λ e , where λ e is the electron mean free path in a gas sealed in said display panel.
Claim 2
Dependent Claim
192 words
A gas discharge display panel comprising: a front plate and a rear plate disposed opposite one another and forming opposed outer walls of a vacuum container, said front and rear plates being made of an insulating material, a plurality of parallel grooves being formed in an inner surface of said rear plate with elongated banks being formed between adjacent grooves; a plurality of parallel anode electrodes, one of said anode electrodes being disposed in each of said parallel grooves; and a plurality of parallel cathode electrodes disposed on an inner surface of said front plate orthogonal to said anode electrodes, said cathode electrodes having openings formed therein at intersections of said cathode electrodes and said anode electrodes, recesses being formed in said front plate at said intersections of said anode electrodes and said cathode electrodes, means disposed on said cover plate extending parallel to said cathode electrodes to align said cathode electrodes and prevent contact with each other, and wherein a thickness T of said cathode electrodes is defined by 10λ e ≦T≦100λ e , where λ e is the electron mean free path in a gas sealed in said display panel.
Claim 3
Dependent Claim
37 words
The gas discharge display panel as claimed in claim 1 further comprising a black insulating layer of glass powder disposed on said inner surface of said front plate, said recesses being formed in said black insulating layer.
Claim 4
Dependent Claim
22 words
The gas discharge display panel as claimed in claim 1 further comprising a coating of fluorescent material disposed inside each said recess.
Claim 5
Dependent Claim
44 words
The gas discharge display panel as claimed in claim 1 wherein the depth of said grooves in said rear plate is approximately 200μ and wherein said anode electrodes are formed from a material selected from the group consisting of Fe--Ni--Cr alloy and Fe--Ni alloy.
Claim 6
Dependent Claim
34 words
The gas discharge display panel as claimed in claim 2 wherein said means disposed on said cover plate comprises barriers formed by said black insulating layer on said front plate between adjacent cathode electrodes.
Claim 7
Dependent Claim
25 words
The gas discharge display panel as claimed in claim 1 further comprising a plurality of resetting auxiliary cathode electrodes disposed between adjacent character anode electrodes.
Claim 8
Dependent Claim
44 words
The gas discharge display panel as claimed in claim 1 wherein said recesses are provided directly in said front plate, and said means disposed on said cover plate comprises parallel spaced portions of said front plate contacting adjacent cathode electrodes and maintaining spacing therebetween.
Claim 9
Dependent Claim
197 words
A gas discharge display panel comprising: a front plate and a rear plate disposed opposite one another and forming opposed outer walls of a vacuum container, said front and rear plates being made of an insulating material, a plurality of parallel grooves being formed in an inner surface of said rear plate with elongated banks being formed between adjacent grooves; a plurality of parallel anode electrodes, one of said anode electrodes being disposed in each of said parallel grooves; and a plurality of parallel cathode electrodes disposed on an inner surface of said front plate orthogonal to said anode electrodes, said cathode electrodes having openings formed therein at intersections of said cathode electrodes and said anode electrodes, recesses being formed in said front plate at said intersections of said anode electrodes and said cathode electrodes, means disposed on said cover plate extending parallel to said cathode electrodes to align said cathode electrodes and prevent contact with each other, and wherein a distance S between said front plate and each said cathode electrode is defined by 25λ e ≦S≦70λ e , where λ e is the electron mean free path in a gas sealed in said display panel.
Claim 10
Dependent Claim
197 words
A gas discharge display panel comprising: a front plate and a rear plate disposed opposite one another and forming opposed outer walls of a vacuum container, said front and rear plates being made of an insulating material, a plurality of parallel grooves being formed in an inner surface of said rear plate with elongated banks being formed between adjacent grooves; a plurality of parallel anode electrodes, one of said anode electrodes being disposed in each of said parallel grooves; and a plurality of parallel cathode electrodes disposed on an inner surface of said front plate orthogonal to said anode electrodes, said cathode electrodes having openings formed therein at intersections of said cathode electrodes and said anode electrodes, recesses being formed in said front plate at said intersections of said anode electrodes and said cathode electrodes, means disposed on said cover plate extending parallel to said cathode electrodes to align said cathode electrodes and prevent contact with each other, and wherein a distance S between said front plate and each said cathode electrode is defined by 25λ e ≦S≦70λ e , where λ e is the electron mean free path in a gas sealed in said display panel.
Claim 11
Dependent Claim
36 words
The gas discharge panel as claimed in claim 8 further comprising a black insulating layer of glass powder disposed on said inner surface of said front plate, said recesses being formed in said black insulating layer.
Claim 12
Dependent Claim
34 words
The gas discharge display panel as claimed in claim 9 wherein said means disposed on said cover plate comprises barriers formed by said black insulating layer on said front plate between adjacent cathode electrodes.
Claim 13
Dependent Claim
22 words
The gas discharge display panel as claimed in claim 8 further comprising a coating of fluorescent material disposed inside each said recess.
Claim 14
Dependent Claim
44 words
The gas discharge display panel as claimed in claim 8 wherein the depth of said grooves in said rear plate is approximately 200μ and wherein said anode electrodes are formed from a material selected from the group consisting of Fe--Ni--Cr alloy and Fe--Ni alloy.
Claim 15
Dependent Claim
25 words
The gas discharge display panel as claimed in claim 8 further comprising a plurality of resetting auxiliary cathode electrodes disposed between adjacent character anode electrodes.
Claim 16
Dependent Claim
211 words
A gas discharge display panel comprising: a front plate and a rear plate disposed opposite one another and forming opposed outer walls of a vacuum container, said front and rear plates being made of an insulating material, a plurality of parallel grooves being formed in an inner surface of said rear plate with elongated banks being formed between adjacent grooves; a plurality of parallel anode electrodes, one of said anode electrodes being disposed in each of said parallel grooves; and a plurality of parallel cathode electrodes disposed on an inner surface of said front plate orthogonal to said anode electrodes, said cathode electrodes having openings formed therein at said intersections of said cathode electrodes and said anode electrodes, recesses being formed in said front plate at said intersections of said anode electrodes and said cathode electrodes, means disposed on said cover plate extending parallel to said cathode electrodes to align said cathode electrodes and prevent contact with each other, and wherein said openings of said cathode electrodes are rectangular and wherein a length D 2 of one side of each of said rectangular openings is defined by 40λ e ≦D 2 ≦500λ e , where λ e is the electron mean free path in a gas sealed in said display panel.
Claim 17
Dependent Claim
211 words
A gas discharge display panel comprising: a front plate and a rear plate disposed opposite one another and forming opposed outer walls of a vacuum container, said front and rear plates being made of an insulating material, a plurality of parallel grooves being formed in an inner surface of said rear plate with elongated banks being formed between adjacent grooves; a plurality of parallel anode electrodes, one of said anode electrodes being disposed in each of said parallel grooves; and a plurality of parallel cathode electrodes disposed on an inner surface of said front plate orthogonal to said anode electrodes, said cathode electrodes having openings formed therein at said intersections of said cathode electrodes and said anode electrodes, recesses being formed in said front plate at said intersections of said anode electrodes and said cathode electrodes, means disposed on said cover plate extending parallel to said cathode electrodes to align said cathode electrodes and prevent contact with each other, and wherein said openings of said cathode electrodes are rectangular and wherein a length D 2 of one side of each of said rectangular openings is defined by 40λ e ≦D 2 ≦500λ e , where λ e is the electron mean free path in a gas sealed in said display panel.
Claim 18
Dependent Claim
37 words
The gas discharge display panel as claimed in claim 14 further comprising a black insulating layer of glass powder disposed on said inner surface of said front plate, said recesses being formed in said black insulating layer.
Claim 19
Dependent Claim
34 words
The gas discharge display panel as claimed in claim 15 wherein said means disposed on said cover plate comprises barriers formed by said black insulating layer on said front plate between adjacent cathode electrodes.
Claim 20
Dependent Claim
22 words
The gas discharge display panel as claimed in claim 14 further comprising a coating of fluorescent material disposed inside each said recess.
Claim 21
Dependent Claim
44 words
The gas discharge display panel as claimed in claim 14 wherein the depth of said grooves in said rear plate is approximately 200μ and wherein said anode electrodes are formed from a material selected from the group consisting of Fe--Ni--Cr alloy and Fe--Ni alloy.
Claim 22
Dependent Claim
25 words
The gas discharge display panel as claimed in claim 14 further comprising a plurality of resetting auxiliary cathode electrodes disposed between adjacent character anode electrodes.
Claim 23
Dependent Claim
201 words
A gas discharge display panel comprising: a front plate and rear plate disposed opposite one another and forming opposed outer walls of a vacuum container, said front and rear plates being made of an insulating material, a plurality of parallel grooves being formed in an inner surface of said rear plate with elongated banks being formed between adjacent grooves; a plurality of parallel anode electrodes, one of said anode electrodes being disposed in each of said parallel grooves; and a plurality of parallel cathode electrodes disposed on an inner surface of said front plate orthogonal to said anode electrodes, said cathode electrodes having openings formed therein at intersections of said cathode electrodes and said anode electrodes, recesses being formed in said front plate at said intersections of said anode electrodes and said cathode electrodes, means disposed on said cover plate extending parallel to said cathode electrodes to align said cathode electrodes and prevent contact with each other, and wherein said openings in said cathodes are circular, a diameter D 2' of each said circular opening being defined by 40λ e ≦D 2' ≦500λ.sub. e, where λ e is the electron mean free path in a gas sealed in said display panel.
Claim 24
Dependent Claim
201 words
A gas discharge display panel comprising: a front plate and rear plate disposed opposite one another and forming opposed outer walls of a vacuum container, said front and rear plates being made of an insulating material, a plurality of parallel grooves being formed in an inner surface of said rear plate with elongated banks being formed between adjacent grooves; a plurality of parallel anode electrodes, one of said anode electrodes being disposed in each of said parallel grooves; and a plurality of parallel cathode electrodes disposed on an inner surface of said front plate orthogonal to said anode electrodes, said cathode electrodes having openings formed therein at intersections of said cathode electrodes and said anode electrodes, recesses being formed in said front plate at said intersections of said anode electrodes and said cathode electrodes, means disposed on said cover plate extending parallel to said cathode electrodes to align said cathode electrodes and prevent contact with each other, and wherein said openings in said cathodes are circular, a diameter D 2' of each said circular opening being defined by 40λ e ≦D 2' ≦500λ.sub. e, where λ e is the electron mean free path in a gas sealed in said display panel.
Claim 25
Dependent Claim
37 words
The gas discharge display panel as claimed in claim 20 further comprising a black insulating layer of glass powder disposed on said inner surface of said front plate, said recesses being formed in said black insulating layer.
Claim 26
Dependent Claim
34 words
The gas discharge display panel as claimed in claim 21 wherein said means disposed on said cover plate comprises barriers fromed by said black insulating layer on said front plate between adjacent cathode electrodes.
Claim 27
Dependent Claim
22 words
The gas discharge display panel as claimed in claim 20 further comprising a coating of fluorescent material disposed inside each said recess.
Claim 28
Dependent Claim
43 words
The gas discharge panel as claimed in claim 20 wherein the depth of said grooves in said rear plate is approximately 200μ and wherein said anode electrodes are formed from a material selected from the group consisting of Fe--Ni--Cr alloy and Fe--Ni alloy.
Claim 29
Dependent Claim
25 words
The gas discharge display panel as claimed in claim 20 further comprising a plurality of resetting auxiliary cathode electrodes disposed between adjacent character anode electrodes.
Claim 30
Dependent Claim
168 words
A gas discharge display panel comprising: a front plate and a rear plate disposed opposite one another and forming opposed outer walls of a vacuum container, said front and rear plates being made of an insulating material, a plurality of parallel grooves being formed in an inner surface of said rear plate with elongated banks being formed between adjacent grooves; a plurality of parallel anode electrodes, one of said anode electrodes being disposed in each of said parallel grooves; and a plurality of parallel cathode electrodes disposed on an inner surface of said front plate orthogonal to said anode electrodes, said cathode electrodes having openings formed therein at intersections of said cathode electrodes and said anode electrodes, recesses being formed in said front plate at said intersections of said anode electrodes and said cathode electrodes, and wherein a thickness T of said cathode electrodes is defined by 10λ e ≦T≦100λ e where λ e is the electron mean free path in a gas sealed in said display panel.
Claim 31
Dependent Claim
168 words
A gas discharge display panel comprising: a front plate and a rear plate disposed opposite one another and forming opposed outer walls of a vacuum container, said front and rear plates being made of an insulating material, a plurality of parallel grooves being formed in an inner surface of said rear plate with elongated banks being formed between adjacent grooves; a plurality of parallel anode electrodes, one of said anode electrodes being disposed in each of said parallel grooves; and a plurality of parallel cathode electrodes disposed on an inner surface of said front plate orthogonal to said anode electrodes, said cathode electrodes having openings formed therein at intersections of said cathode electrodes and said anode electrodes, recesses being formed in said front plate at said intersections of said anode electrodes and said cathode electrodes, and wherein a thickness T of said cathode electrodes is defined by 10λ e ≦T≦100λ e where λ e is the electron mean free path in a gas sealed in said display panel.
Claim 32
Dependent Claim
174 words
A gas discharge display panel comprising: a front plate and a rear plate disposed opposite one another and forming opposed outer walls of a vacuum container, said front and rear plates being made of an insulating material, a plurality of parallel grooves being formed in an inner surface of said rear plate with elongated banks being formed between adjacent grooves; a plurality of parallel anode electrodes, one of said anode electrodes being disposed in each of said parallel grooves; and a plurality of parallel cathode electrodes disposed on an inner surface of said front plate orthogonal to said anode electrodes, said cathode electrodes having openings formed therein at intersections of said cathode electrodes and said anode electrodes, recesses being formed in said front plate at said intersections of said anode electrodes and said cathode electrodes, and wherein a distance S between said front plate and each said cathode electrode is defined by 25λ e ≦S≦70λ e , where λ e is the electron mean free path in a gas sealed in said display panel.
Claim 33
Dependent Claim
174 words
A gas discharge display panel comprising: a front plate and a rear plate disposed opposite one another and forming opposed outer walls of a vacuum container, said front and rear plates being made of an insulating material, a plurality of parallel grooves being formed in an inner surface of said rear plate with elongated banks being formed between adjacent grooves; a plurality of parallel anode electrodes, one of said anode electrodes being disposed in each of said parallel grooves; and a plurality of parallel cathode electrodes disposed on an inner surface of said front plate orthogonal to said anode electrodes, said cathode electrodes having openings formed therein at intersections of said cathode electrodes and said anode electrodes, recesses being formed in said front plate at said intersections of said anode electrodes and said cathode electrodes, and wherein a distance S between said front plate and each said cathode electrode is defined by 25λ e ≦S≦70λ e , where λ e is the electron mean free path in a gas sealed in said display panel.
Claim 34
Dependent Claim
187 words
A gas discharge display panel comprising: a front plate and a rear plate disposed opposite one another and forming opposed outer walls of a vacuum container, said front and rear plates being made of an insulating material, a plurality of parallel grooves being formed in an inner surface of said rear plate with elongated banks being formed between adjacent grooves; a plurality of parallel anode electrodes, one of said anode electrodes being disposed in each of said parallel grooves; and a plurality of parallel cathode electrodes disposed on an inner surface of said front plate orthogonal to said anode electrodes, said cathode electrodes having openings formed therein at intersections of said cathode electrodes and said anode electrodes, recesses being formed in said front plate at said intersections of said anode electrodes and said cathode electrodes, and wherein said openings of said cathode electrodes are rectangular and wherein a length D 2 of one side of each of said rectangular openings is defined by 40λ e ≦D 2 ≦500λ e , where λ e is the electron mean free path in a gas sealed in said display panel.
Claim 35
Dependent Claim
187 words
A gas discharge display panel comprising: a front plate and a rear plate disposed opposite one another and forming opposed outer walls of a vacuum container, said front and rear plates being made of an insulating material, a plurality of parallel grooves being formed in an inner surface of said rear plate with elongated banks being formed between adjacent grooves; a plurality of parallel anode electrodes, one of said anode electrodes being disposed in each of said parallel grooves; and a plurality of parallel cathode electrodes disposed on an inner surface of said front plate orthogonal to said anode electrodes, said cathode electrodes having openings formed therein at intersections of said cathode electrodes and said anode electrodes, recesses being formed in said front plate at said intersections of said anode electrodes and said cathode electrodes, and wherein said openings of said cathode electrodes are rectangular and wherein a length D 2 of one side of each of said rectangular openings is defined by 40λ e ≦D 2 ≦500λ e , where λ e is the electron mean free path in a gas sealed in said display panel.
Claim 36
Dependent Claim
180 words
A gas discharge display panel comprising: a front plate and a rear plate disposed opposite one another and forming opposed outer walls of a vacuum container, said front and rear plates being made of an insulating material, a plurality of parallel grooves being formed in an inner surface of said rear plate with elongated banks being formed between adjacent grooves; a plurality of parallel anode electrodes, one of said anode electrodes being disposed in each of said parallel grooves; and a plurality of parallel cathode electrodes disposed on an inner surface of said front plate orthogonal to said anode electrodes, said cathode electrodes having openings formed therein at intersections of said cathode electrodes and said anode electrodes, recesses being formed in said front plate at said intersections of said anode electrodes and said cathode electrodes, and wherein said openings in said cathodes are circular, a diameter D 2' of each said circular opening being defined by 40λ e ≦D 2' ≦500λ e , where λ e is the electron mean free path in a gas sealed in said display panel.
Claim 37
Dependent Claim
180 words
A gas discharge display panel comprising: a front plate and a rear plate disposed opposite one another and forming opposed outer walls of a vacuum container, said front and rear plates being made of an insulating material, a plurality of parallel grooves being formed in an inner surface of said rear plate with elongated banks being formed between adjacent grooves; a plurality of parallel anode electrodes, one of said anode electrodes being disposed in each of said parallel grooves; and a plurality of parallel cathode electrodes disposed on an inner surface of said front plate orthogonal to said anode electrodes, said cathode electrodes having openings formed therein at intersections of said cathode electrodes and said anode electrodes, recesses being formed in said front plate at said intersections of said anode electrodes and said cathode electrodes, and wherein said openings in said cathodes are circular, a diameter D 2' of each said circular opening being defined by 40λ e ≦D 2' ≦500λ e , where λ e is the electron mean free path in a gas sealed in said display panel.
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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) | 1988-07-15 | 1989-01-14 | 1989-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-07-15 | 1993-01-14 | 1993-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-07-15 | 1997-01-14 | 1997-07-16 | $7700.00 | Window Closed / Lapsed |