US3879629A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas display panel and method of making same
Assignee: International Business Machines Corp
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Filing: 1973-06-25
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Granted: 1975-04-22
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Expires: 1993-06-25
Abstract
Abstract The improved gas display panel is made up of four layers. The two inner layers constitute the active display device and are constructed utilizing thin sheets of glass in a known manner. The two outer layers are comprised of relatively heavy glass plates of non-critical thickness and flatness that are appropriately spaced from the inner plates. Each of the inner plates preferably has at least one hole passing through it outside of the viewing area of the display so that gas pressures within the three gaps of the four-layer sandwich will be equal and deflection of either of the outer plates will not cause deflection of the inner plates.
Inventors
- 👤 Robert D Durand
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:38
CPC Classifications
H; H01; H01J; H01J9/00; H01J9/24; H01J9/26; H01J9/261
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
115 words
In a method of fabricating a gas panel, said method including the step of sealing two active glass plates together spaced apart a given distance to form a center chamber therebetween, each of said active glass plates having dielectric coated conductive electrodes on the inner surface thereof, and the step of filling said chamber with an illuminable gas; the improvement comprising the additional step of: sealing to the exterior face of each of said active glass plates a passive plate which does not directly contribute to the displaying of information on said gas panel, both of said passive plates being spaced apart a given distance from the adjacent active plate to form two outer chambers.
Claim 2
Dependent Claim
115 words
In a method of fabricating a gas panel, said method including the step of sealing two active glass plates together spaced apart a given distance to form a center chamber therebetween, each of said active glass plates having dielectric coated conductive electrodes on the inner surface thereof, and the step of filling said chamber with an illuminable gas; the improvement comprising the additional step of: sealing to the exterior face of each of said active glass plates a passive plate which does not directly contribute to the displaying of information on said gas panel, both of said passive plates being spaced apart a given distance from the adjacent active plate to form two outer chambers.
Claim 3
Dependent Claim
21 words
The method of claim 1 wherein all four of said plates are sealed together in one step at the same time.
Claim 4
Dependent Claim
18 words
The method of claim 1 further including the additional step of filling said outer chambers with a gas.
Claim 5
Dependent Claim
32 words
The method of claim 1 further including the step of placing at least one hole in one of said passive plates to interconnect one of said outer chambers with the ambient atmosphere.
Claim 6
Dependent Claim
34 words
The method of claim 4 further including the step of placing at least one hole in the other of said passive plates to interconnect the other of said outer chambers with the ambient atmosphere.
Claim 7
Dependent Claim
48 words
The method of claim 1 further including the step of placing at least one hole in each of said active plates to interconnect said center chamber with each of said outer chambers; and wherein all of said chambers are filled with said illuminable gas in said filling step.
Claim 8
Dependent Claim
26 words
The method of claim 6 wherein the holes placed in said active plates are placed outside of the area that will be utilized for displaying data.
Claim 9
Dependent Claim
21 words
The method of claim 7 wherein all four of said plates are sealed together in one step at the same time.
Claim 10
Dependent Claim
119 words
In a gas display panel which comprises two active glass plates sealed together in a spaced relationship with a center chamber therebetween, each of said active glass plates having dielectric coated conductive electrodes on the inner surface thereof, said center chamber being filled with an illuminable gas, the improvement comprising: a first passive plate sealed to one of said active plates in a spaced relationship thereto, forming a first outer chamBer therebetween; and a second passive plate sealed to the other of said active plates in a spaced relationship thereto, forming a second outer chamber therebetween, both of said passive plates being free of electrical connections that would directly affect the displaying of information on said gas display panel.
Claim 11
Dependent Claim
119 words
In a gas display panel which comprises two active glass plates sealed together in a spaced relationship with a center chamber therebetween, each of said active glass plates having dielectric coated conductive electrodes on the inner surface thereof, said center chamber being filled with an illuminable gas, the improvement comprising: a first passive plate sealed to one of said active plates in a spaced relationship thereto, forming a first outer chamBer therebetween; and a second passive plate sealed to the other of said active plates in a spaced relationship thereto, forming a second outer chamber therebetween, both of said passive plates being free of electrical connections that would directly affect the displaying of information on said gas display panel.
Claim 12
Dependent Claim
119 words
In a gas display panel which comprises two active glass plates sealed together in a spaced relationship with a center chamber therebetween, each of said active glass plates having dielectric coated conductive electrodes on the inner surface thereof, said center chamber being filled with an illuminable gas, the improvement comprising: a first passive plate sealed to one of said active plates in a spaced relationship thereto, forming a first outer chamBer therebetween; and a second passive plate sealed to the other of said active plates in a spaced relationship thereto, forming a second outer chamber therebetween, both of said passive plates being free of electrical connections that would directly affect the displaying of information on said gas display panel.
Claim 13
Dependent Claim
119 words
In a gas display panel which comprises two active glass plates sealed together in a spaced relationship with a center chamber therebetween, each of said active glass plates having dielectric coated conductive electrodes on the inner surface thereof, said center chamber being filled with an illuminable gas, the improvement comprising: a first passive plate sealed to one of said active plates in a spaced relationship thereto, forming a first outer chamBer therebetween; and a second passive plate sealed to the other of said active plates in a spaced relationship thereto, forming a second outer chamber therebetween, both of said passive plates being free of electrical connections that would directly affect the displaying of information on said gas display panel.
Claim 14
Dependent Claim
19 words
The improved gas display panel of claim 9 wherein each of said outer chambers is filled with a gas.
Claim 15
Dependent Claim
43 words
The improved gas display panel of claim 10 wherein: each of said active plates has at least one hole passing therethrough to connect each of said outer chambers to said center chamber; all three of said chambers being filled with said illuminable gas.
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) | 1978-04-21 | 1978-10-21 | 1979-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-21 | 1982-10-21 | 1983-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-21 | 1986-10-21 | 1987-04-22 | $7700.00 | Window Closed / Lapsed |