US3885180A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microchannel imaging display device
Assignee: United States Department of the Army
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Filing: 1973-07-10
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Granted: 1975-05-20
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Expires: 1993-07-10
Abstract
Abstract A display device using a microchannel plate electron multiplier with a set of fine, closely spaced, parallel continuous metallic lines deposited on each side of the microchannel plate with each set of metallic lines being perpendicular to each other. An input sequential switcher and an output sequential switcher have voltage differentials that are separately swept across each set of lines such that when the voltage differentials are applied on directly opposite sides of the microchannel plate, while the regular bias voltage is applied across the MCP, there is high electron gain. A photoemissive panel, emitting a uniform flow of electrons therefrom, is positioned adjacent the input set of metallic lines, and a luminescent screen, such as phosphor, is positioned adjacent the output set of metallic lines for displaying an image according to electron flow caused by the differential sequential switching voltages.
Inventors
- 👤 Jr Stanley L Carts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:30
CPC Classifications
H; H01; H01J; H01J43/00; H01J43/04; H01J43/06; H01J43/18; H01J43/24; H01J43/246; H01J29/00; H01J29/46; H01J29/467; H01J31/00; H01J31/08; H01J31/10; H01J31/12; H01J31/128
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
328 words
An image display device comprising: an electron producing means for producing a uniform flow of electrons; a microchannel plate electron multiplier positioned adjacent said electron producing means; means for selectively sequentially switching electron accelerating voltages across said microchannel plate electron multiplier, said means for selectively sequentially switching electron accelerating voltage further comprising: a set of thin parallel input electrodes on the input side of said microchannel plate that are attached to an input sequential switcher for cyclically sweeping instantaneous input sequential voltages across each of said input electrodes; a set of thin parallel output electrodes on the output side of said microchannel plate that are perpendicular to said input electrodes and are attached to an output sequential switcher for cyclically sweeping instantaneous output sequential voltage across each of said output electrodes wherein said cyclically sweeping instantaneous input and output sequential voltages cyclically produce a sweep of cross-over voltage points over the entire face of said microchannel plate; and a common input electrode connected to all of said set of thin parallel input electrodes; a common output electrode connected to all of said set of thin parallel output electrodes; a regular bias voltage connected in series with said cyclically sweeping instantaneous input and output sequential voltages through a switch across said microchannel plate wherein said regular bias voltage is connected between said common input electrode and said common output electrode to serially add said regular bias voltage to said cyclically sweeping instantaneous input and output side of said microchannel plate at said crossover point of said input and output sequential voltages and whereby said regular bias voltage is repeatedly switched on within one complete cycle of said cyclically sweeping instantaneous input and output sequential voltages to selectively provide said high electron density area in a desired pattern i and, A means for converting electronic energy into visible energy at said output side of said microchannel plate for producing an image display according to said sequentially switched electron accelerating voltages.
Claim 2
Dependent Claim
328 words
An image display device comprising: an electron producing means for producing a uniform flow of electrons; a microchannel plate electron multiplier positioned adjacent said electron producing means; means for selectively sequentially switching electron accelerating voltages across said microchannel plate electron multiplier, said means for selectively sequentially switching electron accelerating voltage further comprising: a set of thin parallel input electrodes on the input side of said microchannel plate that are attached to an input sequential switcher for cyclically sweeping instantaneous input sequential voltages across each of said input electrodes; a set of thin parallel output electrodes on the output side of said microchannel plate that are perpendicular to said input electrodes and are attached to an output sequential switcher for cyclically sweeping instantaneous output sequential voltage across each of said output electrodes wherein said cyclically sweeping instantaneous input and output sequential voltages cyclically produce a sweep of cross-over voltage points over the entire face of said microchannel plate; and a common input electrode connected to all of said set of thin parallel input electrodes; a common output electrode connected to all of said set of thin parallel output electrodes; a regular bias voltage connected in series with said cyclically sweeping instantaneous input and output sequential voltages through a switch across said microchannel plate wherein said regular bias voltage is connected between said common input electrode and said common output electrode to serially add said regular bias voltage to said cyclically sweeping instantaneous input and output side of said microchannel plate at said crossover point of said input and output sequential voltages and whereby said regular bias voltage is repeatedly switched on within one complete cycle of said cyclically sweeping instantaneous input and output sequential voltages to selectively provide said high electron density area in a desired pattern i and, A means for converting electronic energy into visible energy at said output side of said microchannel plate for producing an image display according to said sequentially switched electron accelerating voltages.
Claim 3
Dependent Claim
24 words
An image display device as set forth in claim 1 wherein said means for converting electronic energy into visible energy is a phosphor screen.
References Cited (Backward Citations)
US3634712A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-05-19 | 1978-11-18 | 1979-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-19 | 1982-11-18 | 1983-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-19 | 1986-11-18 | 1987-05-20 | $7700.00 | Window Closed / Lapsed |