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US3935494A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Single substrate plasma discharge cell
Assignee: AT&T Inc
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Filing: 1974-02-21
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Granted: 1976-01-27
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Expires: 1994-02-21
Abstract
Abstract A gaseous display device with memory is disclosed which requires only a single dielectric substrate with layers of orthogonal conductors laid thereon, which layers are separated by a dielectric layer. The substrate and layers thereon are enclosed in a gaseous environment with conductors brought through an envelope to facilitate the application of a.c. signals. Dielectric barriers are conveniently established on the substrate to control the shape of the individual discharges and to prevent crosstalk.
Inventors
- 👤 George Wilmer Dick
- 👤 Walter Bryan Hatfield
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:34
CPC Classifications
H; H01; H01J; H01J11/00
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
138 words
A gas discharge panel comprising a substantially planar dielectric substrate, a first plurality of spaced electrodes positioned on said substrate, a first dielectric layer covering said first plurality of electrodes, a second plurality of spaced electrodes positioned on said first dielectric layer and overlaying at least some of said first plurality of electrodes, a first plurality of dielectric barriers overlaying said first dielectric layer each of said barriers being positioned at least partly between an associated pair of said second plurality of electrodes, an envelope enclosing said substrate and electrodes and barriers on said substrate, said envelope being substantially transparent in an area above said second set of electrodes, said envelope also containing a confined ionizable atmosphere, and a dielectric layer covering said second plurality of electrodes, thereby shielding said second plurality of electrodes from said ionizable atmosphere.
Claim 2
Dependent Claim
138 words
A gas discharge panel comprising a substantially planar dielectric substrate, a first plurality of spaced electrodes positioned on said substrate, a first dielectric layer covering said first plurality of electrodes, a second plurality of spaced electrodes positioned on said first dielectric layer and overlaying at least some of said first plurality of electrodes, a first plurality of dielectric barriers overlaying said first dielectric layer each of said barriers being positioned at least partly between an associated pair of said second plurality of electrodes, an envelope enclosing said substrate and electrodes and barriers on said substrate, said envelope being substantially transparent in an area above said second set of electrodes, said envelope also containing a confined ionizable atmosphere, and a dielectric layer covering said second plurality of electrodes, thereby shielding said second plurality of electrodes from said ionizable atmosphere.
Claim 3
Dependent Claim
72 words
A panel according to claim 1 further comprising a second plurality of dielectric barriers, each of which overlays a plurality of barriers of said first plurality of barriers, each of said second plurality of barriers being positioned over said substrate at a position at least partially between an associated pair of electrodes of said first plurality of electrodes, said first and second pluralities of barriers thereby forming a plurality of two-dimensional apertures.
Claim 4
Dependent Claim
202 words
A gas discharge panel comprising a substantially planar dielectric substrate, a first plurality of spaced electrodes positioned on said substrate, a first dielectric layer covering said first plurality of electrodes, a second plurality of spaced electrodes positioned on said first dielectric layer and overlaying at least some of said first plurality of electrodes, a first plurality of dielectric barriers overlaying said first dielectric layer each of said barriers being positioned at least partly between an associated pair of said second plurality of electrodes, an envelope enclosing said substrate and electrodes and barriers on said substrate, said envelope being substantially transparent in an area above said second set of electrodes, said envelope also containing a confined ionizable atmosphere, a dielectric layer covering said second plurality of electrodes, thereby shielding said second plurality of electrodes from said ionizable atmosphere, and a second plurality of dielectric barriers, each of which overlays a plurality of barriers of said first plurality of barriers, each of said second plurality of barriers being positioned over said substrate at a position at least partially between an associated pair of electrodes of said first plurality of electrodes, said first and second pluralities of barriers thereby forming a plurality of twodimensional apertures.
Claim 5
Dependent Claim
202 words
A gas discharge panel comprising a substantially planar dielectric substrate, a first plurality of spaced electrodes positioned on said substrate, a first dielectric layer covering said first plurality of electrodes, a second plurality of spaced electrodes positioned on said first dielectric layer and overlaying at least some of said first plurality of electrodes, a first plurality of dielectric barriers overlaying said first dielectric layer each of said barriers being positioned at least partly between an associated pair of said second plurality of electrodes, an envelope enclosing said substrate and electrodes and barriers on said substrate, said envelope being substantially transparent in an area above said second set of electrodes, said envelope also containing a confined ionizable atmosphere, a dielectric layer covering said second plurality of electrodes, thereby shielding said second plurality of electrodes from said ionizable atmosphere, and a second plurality of dielectric barriers, each of which overlays a plurality of barriers of said first plurality of barriers, each of said second plurality of barriers being positioned over said substrate at a position at least partially between an associated pair of electrodes of said first plurality of electrodes, said first and second pluralities of barriers thereby forming a plurality of twodimensional apertures.
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) | 1979-01-26 | 1979-07-28 | 1980-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-01-26 | 1983-07-28 | 1984-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-01-26 | 1987-07-28 | 1988-01-27 | $7700.00 | Window Closed / Lapsed |