US4326007A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electo-luminescent structure
Assignee: University of Delaware
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Filing: 1980-04-21
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Granted: 1982-04-20
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Expires: 2000-04-21
Abstract
Abstract An electro-luminescent structure comprising a laminar composite made up of pairs of semi-insulator films fabricated from substances developing high energy electrons when subjected to an electrical voltage each in association with phosphor films luminescing under electron impact from the semi-insulators.
Inventors
- 👤 Ferd E. Williams
- 👤 David C. Morton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:47
CPC Classifications
H; H05; H05B; H05B33/00; H05B33/12; H05B33/14; H05B33/145; H05B33/22; Y; Y10; Y10S; Y10S428/00; Y10S428/917; Y10T; Y10T428/00; Y10T428/26; Y10T428/261; Y10T428/263; Y10T428/264; Y10T428/265
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
121 words
A laminar electroluminescent structure comprising a semi-insulator layer consisting essentially of silicon monoxide having a thickness in the range of about 500 A to about 1000 A capable of producing relatively high energy electrons upon imposition of a voltage thereacross and, contiguous to said semi-insulator layer and in surface contact therewith, a phosphor layer consisting essentially of ZnF 2 :Mn having a thickness in the range of about 150 A to about 5000 A receiving high energy electrons from said semi-insulator layer and luminescing by excitation due to impact of said high energy electrons derived from said semi-insulator layer, and electrodes on the outboard surfaces of said semi-insulator layer and said phosphor layer for applying an electrical voltage across said structure.
Claim 2
Dependent Claim
121 words
A laminar electroluminescent structure comprising a semi-insulator layer consisting essentially of silicon monoxide having a thickness in the range of about 500 A to about 1000 A capable of producing relatively high energy electrons upon imposition of a voltage thereacross and, contiguous to said semi-insulator layer and in surface contact therewith, a phosphor layer consisting essentially of ZnF 2 :Mn having a thickness in the range of about 150 A to about 5000 A receiving high energy electrons from said semi-insulator layer and luminescing by excitation due to impact of said high energy electrons derived from said semi-insulator layer, and electrodes on the outboard surfaces of said semi-insulator layer and said phosphor layer for applying an electrical voltage across said structure.
References Cited (Backward Citations)
US3650824A
Cited
GB1543233A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-04-19 | 1985-10-19 | 1986-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-04-19 | 1989-10-19 | 1990-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-04-19 | 1993-10-19 | 1994-04-20 | $7700.00 | Window Closed / Lapsed |