Electroluminescent backing sheet for reading and writing in the

Details Electroluminescent backing sheet for reading and writing in the Electroluminescent backing sheet for reading and writing in the

1979-03-15

1981-05-05

La Roche, Eugene R.

Electric lamp and discharge devices: systems

Plural power supplies

Plural cathode and/or anode load device

40904, 3151693, 362 98, H05B 3308

Patent

active

042661641

ABSTRACT:
An electroluminescent panel assembly for use in darkness or dim light in which side-by-side light strips form an integrated light field with non-lighted regions between which function as dark guidelines to guide writing on overlying sheets of material through which the integrated luminescent field is visible upon energization of the light strips.

REFERENCES:
patent: 1673595 (1928-06-01), Scoggins
patent: 2632116 (1953-03-01), Diem
patent: 2676818 (1954-04-01), Blumberg
patent: 2716298 (1955-08-01), Spielmann et al.
patent: 3037137 (1962-05-01), Motson
patent: 3650824 (1972-03-01), Szepesi et al.

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