US3325664A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electroluminescent display device with improved segmented electrode and terminal structure
Assignee: Philips North America LLC
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Filing: 1964-08-18
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Granted: 1967-06-13
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Expires: 1984-08-18
Abstract
No abstract record available.
Inventors
- 👤 Jr Ivan E Buck
- 👤 Robert W Wollentin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 02:03
CPC Classifications
H; H05; H05B; H05B33/00; H05B33/12; H05B33/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
145 words
AN ELECTROLUMINESCENT DISPLAY DEVICE COMPRISING, FRONT AND REAR ELECTRODE MEANS HAVING A CONTINUOUS LAYER OF ELECTROLUMINESCENT PHOSPHOR DISPOSED THEREBETWEEN, SAID FRONT ELECTRODE MEANS COMPRISING A CONTINUOUS LAYER OF LIGHT-TRANSMITTING MATERIAL, SAID REAR ELECTRODE MEANS INCLUDING A PLURALITY OF INDIVIDUAL PREFORMED PLANAR METAL SEGMENTS EACH HAVING AN ELONGATED CONDUCTING MEMBER SECURED THERETO, AN INSULATING MEMBER OF GLASS OR CERAMIC MATERIAL SUPPORTING THE METAL SEGMENTS AND PHOSPHOR LAYER IN OPERATIVE RELATIONSHIP WITH THE FRONT ELECTRODE MEANS, SAID PLANAR METAL SEGMENTS BEING EMBEDDED IN AND HERMETICALLY UNITED TO THE FRONT FACE OF SAID INSULATING SUPPORT MEMBER, SAID CONDUCTING MEMBERS PROTRUDING THROUGH THE INSULATING-SUPPORT MEMBER TO THE REAR OF THE DEVICE AND THEREBY PROVIDING EXPOSED TERMINALS FOR THE RESPECTIVE METAL ELECTRODE SEGMENTS, AND AN ADDITIONAL ELONGATED CONDUCTING MEMBER CONNECTED TO THE FRONT ELECTRODE MEANS AND EXTENDING THROUGH THE PHOSPHOR LAYER AND INSULATING-SUPPORT MEMBER TO THE REAR OF THE DEVICE.
Claim 2
Dependent Claim
145 words
AN ELECTROLUMINESCENT DISPLAY DEVICE COMPRISING, FRONT AND REAR ELECTRODE MEANS HAVING A CONTINUOUS LAYER OF ELECTROLUMINESCENT PHOSPHOR DISPOSED THEREBETWEEN, SAID FRONT ELECTRODE MEANS COMPRISING A CONTINUOUS LAYER OF LIGHT-TRANSMITTING MATERIAL, SAID REAR ELECTRODE MEANS INCLUDING A PLURALITY OF INDIVIDUAL PREFORMED PLANAR METAL SEGMENTS EACH HAVING AN ELONGATED CONDUCTING MEMBER SECURED THERETO, AN INSULATING MEMBER OF GLASS OR CERAMIC MATERIAL SUPPORTING THE METAL SEGMENTS AND PHOSPHOR LAYER IN OPERATIVE RELATIONSHIP WITH THE FRONT ELECTRODE MEANS, SAID PLANAR METAL SEGMENTS BEING EMBEDDED IN AND HERMETICALLY UNITED TO THE FRONT FACE OF SAID INSULATING SUPPORT MEMBER, SAID CONDUCTING MEMBERS PROTRUDING THROUGH THE INSULATING-SUPPORT MEMBER TO THE REAR OF THE DEVICE AND THEREBY PROVIDING EXPOSED TERMINALS FOR THE RESPECTIVE METAL ELECTRODE SEGMENTS, AND AN ADDITIONAL ELONGATED CONDUCTING MEMBER CONNECTED TO THE FRONT ELECTRODE MEANS AND EXTENDING THROUGH THE PHOSPHOR LAYER AND INSULATING-SUPPORT MEMBER TO THE REAR OF THE DEVICE.
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) | 1970-06-12 | 1970-12-12 | 1971-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-06-12 | 1974-12-12 | 1975-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-06-12 | 1978-12-12 | 1979-06-13 | $7700.00 | Window Closed / Lapsed |