US3589789A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing an open cell color plasma display device
Assignee: International Business Machines Corp
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Filing: 1968-11-22
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Granted: 1971-06-29
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Expires: 1988-11-22
Abstract
Abstract Color plasma display panels are produced by selectively applying, by cataphoretic deposition, predetermined phosphors to certain conductors carried on the inner faces of panel walls, and other phosphors to other conductors. The panel walls are positioned in spaced-apart relationship with the conductors in mutually orthogonal relationship, and a gas chamber formed that includes the inner faces of the panel walls. The cells of the resultant plasma display panel will exhibit either multiple or single color effects during operation.
Inventors
- 👤 Carl R Hubert
- 👤 George M Krembs
- 👤 Parviz Soltan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 04:24
CPC Classifications
H; H01; H01J; H01J11/00; H01J11/10; H01J11/12; H01J9/00; H01J9/24; H01J9/241
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
175 words
A method of producing an open cell color plasma display panel, comprising: applying a plurality of conductive strips in predetermined patterns on first and second generally transparent panel walls; providing a first suspension containing phosphor particles of a first color and a second suspension containing phosphor particles of a second color; placing in the first suspension at least one of the first and second panel walls and at least one electrode member having a plurality of conductive strips arranged in a pattern that closely physically resembles the predetermined pattern of conductive strips on the at least one panel wall; cataphoretically depositing phosphor coatings on selected ones of the plurality of conductive strips on the at least one panel wall; placing said one of the panel walls in said second suspension and cataphoretically depositing phosphor coatings on other of said conductive strips; forming a chamber including the panel walls as the major sides thereof, with the coated portions of the conductive strips lying within the chamber; and introducing within the chamber a suitable discharge responsive gas.
Claim 2
Independent Claim
175 words
A method of producing an open cell color plasma display panel, comprising: applying a plurality of conductive strips in predetermined patterns on first and second generally transparent panel walls; providing a first suspension containing phosphor particles of a first color and a second suspension containing phosphor particles of a second color; placing in the first suspension at least one of the first and second panel walls and at least one electrode member having a plurality of conductive strips arranged in a pattern that closely physically resembles the predetermined pattern of conductive strips on the at least one panel wall; cataphoretically depositing phosphor coatings on selected ones of the plurality of conductive strips on the at least one panel wall; placing said one of the panel walls in said second suspension and cataphoretically depositing phosphor coatings on other of said conductive strips; forming a chamber including the panel walls as the major sides thereof, with the coated portions of the conductive strips lying within the chamber; and introducing within the chamber a suitable discharge responsive gas.
Claim 3
Dependent Claim
66 words
The method set forth in claim 1 including: placing in the suspension the other of the panel walls and another electrode member having a plurality of conductive strips arranged in a pattern that closely physically resembles the predetermined pattern on the other of the panel walls; and cataphoretically depositing phosphor coatings on at least portions of the plurality of conductive strips on the other panel wall.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-28 | 1974-12-28 | 1975-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-28 | 1978-12-28 | 1979-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-28 | 1982-12-28 | 1983-06-29 | $7700.00 | Window Closed / Lapsed |