US4591758A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas plasma display panel containing an improved low-temperature dielectric
Assignee: Unisys Corp
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Filing: 1985-02-14
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Granted: 1986-05-27
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Expires: 2005-02-14
Abstract
Abstract A composition for a dielectric ink used in a screening process including a lead-free glass frit binder, silica, and a vehicle. The dielectric composition is particularly suited for use in gas plasma display panels.
Inventors
- 👤 Edward G. Barth
- 👤 Ruvim Braude
- 👤 Nicholas W. Kay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:51
CPC Classifications
H; H01; H01J; H01J17/00; H01J17/38; H01J17/48; H01J17/49; C; C03; C03C; C03C8/00; C03C8/02; C03C8/04; H01B; H01B3/00; H01B3/02; H01B3/08; H01B3/085; H01B3/087
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
149 words
A gas plasma display panel including an envelope made up of a base plate and a face plate containing an ionizable gas, a plurality of thick film cathode electrodes in said envelope, at least one anode electrode in operative relation with said cathode electrodes, and a dielectric on said base plate and outlining said cathodes, said dielectric comprising a composition including a lead-free glass frit, silica, and a vehicle, said glass composition including about 20% by weight of SiO 2 , about 20% by weight of B 2 O 3 , about 3% by weight of CaO, about 40% by weight of ZnO, about 5% by weight of Al 2 O 3 , about 7% by weight of Na 2 O, about 4% by weight of K 2 O, and about 1% by weight of Li 2 O, said glass composition being fireable at temperatures below about 600° C.
Claim 2
Dependent Claim
149 words
A gas plasma display panel including an envelope made up of a base plate and a face plate containing an ionizable gas, a plurality of thick film cathode electrodes in said envelope, at least one anode electrode in operative relation with said cathode electrodes, and a dielectric on said base plate and outlining said cathodes, said dielectric comprising a composition including a lead-free glass frit, silica, and a vehicle, said glass composition including about 20% by weight of SiO 2 , about 20% by weight of B 2 O 3 , about 3% by weight of CaO, about 40% by weight of ZnO, about 5% by weight of Al 2 O 3 , about 7% by weight of Na 2 O, about 4% by weight of K 2 O, and about 1% by weight of Li 2 O, said glass composition being fireable at temperatures below about 600° C.
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) | 1989-05-26 | 1989-11-25 | 1990-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-05-26 | 1993-11-25 | 1994-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-05-26 | 1997-11-25 | 1998-05-27 | $7700.00 | Window Closed / Lapsed |