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US3631286A Expired / Lapsed US ⏱️ 0.0 years remaining

Electroluminescent display device with perforated electrodes

Assignee: GT Schjeldahl Co
•
Filing: 1970-02-16
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Granted: 1971-12-28
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Expires: 1990-02-16
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Abstract

Abstract Electroluminescent device means comprising a base substrate member having a plurality of individual electrically conductive drive lines arranged in integral rows upon the surface of said substrate, a film of an electroluminescent phosphor disposed on the surface of said rows of electrically conductive drive lines, a plurality of individual electrically conductive drive lines arranged in integral columns upon the surface of said phosphor and orthogonally overlying said rows at certain mutual junction areas; and means coupling a source of electrical energy to each of said electrically conductive drive lines in said rows and columns; said electrically conductive columns having isolated perforate openings formed therein at said junction areas, said openings having a large peripheral to area ratio and being disposed along said conductors in enclosed relationship therewithin.

Inventors

  • 👤 Donald E Anderson
  • 👤 Richard L Swisher

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-08 19:49
CPC Classifications
H; H05; H05B; H05B33/00; H05B33/12; H05B33/26

Claims Analysis

Total Claims: 3
Claim 1
Independent Claim 20 words
The electroluminescent means as defined in claim 1 being particularly characterized in that said isolated perforate openings are slotted openings.
Claim 2
Dependent Claim 31 words
The electroluminescent means as defined in claim 2 being particularly characterized in that said slotted openings are in an ''''0'''' configuration having an electrical conductor bridging the inscribed and circumscribed area.
Claim 3
Dependent Claim 43 words
The electroluminescent means as defined in claim 1 being particularly characterized in that the longitudinal axes of said first plurality of electrically conductive drive lines is arranged at right angles to the longitudinal axes of the second plurality of electrically conductive drive lines.

References Cited (Backward Citations)

US2721808A Cited
US2848638A Cited
US2925525A Cited
US2858480A Cited
US3054929A Cited
US3501676A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1974-12-27 1975-06-28 1975-12-28 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1978-12-27 1979-06-28 1979-12-28 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1982-12-27 1983-06-28 1983-12-28 $7700.00 Window Closed / Lapsed

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