Electric lamp and discharge devices – With luminescent solid or liquid material – Solid-state type
Patent
1988-05-23
1989-06-13
Wieder, Kenneth
Electric lamp and discharge devices
With luminescent solid or liquid material
Solid-state type
313498, 313506, 313512, 340719, 3408251, H05B 3314, H05B 3322, G09G 330
Patent
active
048395587
ABSTRACT:
An integrated electroluminescent display (DCEL), in which the DCEL (11) is integrted into the substrate board (10), such as, for example, a printed circuit board, which carries associated electronic components (12), such as, for example, those which would make up a control circuit, the DCEL displaying pertiment information for the control circuit. The bottom electrode (13) for the DCEL can be copper foil, which is etched at the same time as the rest of the foil pattern (13A) used to electrically interconnect the control components (12) of the overall control circuit during the making of the printed circuit board. Thereafter, the phosphor layer (14) is printed onto the associated copper foil segments, and, finally, a glass (15), which has on its inner surface an appropriate pattern of tin oxide (16), is placed on top of the phosphor depositions. The glass is then adhesively bonded to the printed circuit board and appropriate connections made between the tin oxide and the printed circuit board connectors with conductive adhesives, and a sealant (17) is applied around the edge of the glass to prevent moisture from entering the phosphor. Moisture traps (18) can be deposited before the glass is applied to surround each phosphor deposition. The P.C. board is thus made an integral, substrate part of the DCEL.
REFERENCES:
patent: 3786307 (1974-01-01), Robinson
patent: 3803437 (1974-04-01), Robinson
patent: 4159559 (1979-07-01), Robinson, Sr.
patent: 4646074 (1987-02-01), Hashimoto
Phosphor Products Company Limited, "2000 Character DC Electroluminescent Display", Preliminary Specification, Jun. 1984.
Hamilton Standard Controls Inc.
Wieder Kenneth
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