US3687513A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of aging a display panel
Assignee: Unisys Corp
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Filing: 1971-03-24
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Granted: 1972-08-29
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Expires: 1991-03-24
Abstract
Abstract The method comprises assembling the various parts of a display panel made up of rows and columns of tiny dot-like display cells and including elongated anode and cathode electrodes, filling the panel with the desired gas, and then aging the panel by turning on all of its cells in a sequential pattern and with the panel held at an elevated temperature.
Inventors
- 👤 George E Holz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 02:06
CPC Classifications
H; H01; H01J; H01J17/00; H01J17/38; H01J17/48; H01J17/49; H01J17/492; H01J17/494
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
74 words
The method of making multi-cell, gas-filled display panels comprising the steps of assembling a plurality of insulating plates and electrodes to form a gastight envelope including a large number of tiny cells, each having operating electrodes, filling said envelope with a gas filling and a quantity of mercury, and heating the panel in a chamber while turning on and operating each of said cells with said panel at an elevated temperature above 90* C.
Claim 2
Independent Claim
74 words
The method of making multi-cell, gas-filled display panels comprising the steps of assembling a plurality of insulating plates and electrodes to form a gastight envelope including a large number of tiny cells, each having operating electrodes, filling said envelope with a gas filling and a quantity of mercury, and heating the panel in a chamber while turning on and operating each of said cells with said panel at an elevated temperature above 90* C.
Claim 3
Dependent Claim
15 words
The method defined in claim 1 wherein said cells are turned on and operated cyclically.
Claim 4
Dependent Claim
39 words
The method defined in claim 1 wherein said elevated temperature is of the order of 120* C. and said cells are turned on and operated cyclically at said temperature for a period of about 12 to about 48 hours.
Claim 5
Dependent Claim
49 words
The method defined in claim 1 wherein said elevated temperature is of the order of 120* C., and said cells are turned on and operated cyclically at said temperature and at a current of the order of 2 milliamperes for a period of about 12 to about 48 hours.
Claim 6
Independent Claim
198 words
A method of making a multi-cell, gas-filled display panel comprising the steps of assembling a first base plate having a plurality of slots with a first array of first electrodes seated in said slots and a second array of apertured second electrodes seated on the top surface thereof and oriented at 90* to said first electrodes. said first and second electrodes defining a first array of first scanning cells, seating an apertured insulating plate on said second array of electrodes, the apertures in said second plate being arrayed in rows and columns and comprising display cells, each aligned with an aperture in said second electrodes, seating an array of third electrodes on said second plate, each third electrode being aligned with a row of said apertures in said second plate, seating a glass cover plate on said second plate, sealing together said first plate, said second plate, and said cover plate to form a gastight envelope, filling said envelope with a gas filling and a quantity of mercury, and heating the panel in a chamber while turning on and operating each of said scanning cells and display cells with said panel at an elevated temperature above 90* C.
Claim 7
Independent Claim
198 words
A method of making a multi-cell, gas-filled display panel comprising the steps of assembling a first base plate having a plurality of slots with a first array of first electrodes seated in said slots and a second array of apertured second electrodes seated on the top surface thereof and oriented at 90* to said first electrodes. said first and second electrodes defining a first array of first scanning cells, seating an apertured insulating plate on said second array of electrodes, the apertures in said second plate being arrayed in rows and columns and comprising display cells, each aligned with an aperture in said second electrodes, seating an array of third electrodes on said second plate, each third electrode being aligned with a row of said apertures in said second plate, seating a glass cover plate on said second plate, sealing together said first plate, said second plate, and said cover plate to form a gastight envelope, filling said envelope with a gas filling and a quantity of mercury, and heating the panel in a chamber while turning on and operating each of said scanning cells and display cells with said panel at an elevated temperature above 90* C.
Claim 8
Dependent Claim
18 words
The method defined in claim 5 wherein said scanning and display cells are turned on and operated cyclically.
Claim 9
Dependent Claim
42 words
The method defined in claim 5 wherein said elevated temperature is of the order of 120* C. and said scanning and display cells are turned on and operated cyclically at sAid temperature for a period of about 12 to about 48 hours.
Claim 10
Dependent Claim
52 words
The method defined in claim 5 wherein said elevated temperature is of the order of 120* C., and said scanning and display cells are turned on and operated cyclically at said temperature and at a current of the order of 2 milliamperes for a period of about 12 to about 48 hours.
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) | 1975-08-29 | 1976-02-28 | 1976-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-29 | 1980-02-28 | 1980-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-29 | 1984-02-28 | 1984-08-29 | $7700.00 | Window Closed / Lapsed |