Bistable electroluminescent memory and display device

Details Bistable electroluminescent memory and display device Bistable electroluminescent memory and display device

1975-12-19

1977-07-12

Curtis, Marshall M.

Communications: electrical

Digital comparator systems

340174YC, 340324M, 250213A, G06F 314

Patent

active

040357740

ABSTRACT:
An electroluminescent memory and display device which may be switched from a first stable state to a second stable state in response to a relatively low switching voltage, and which may be maintained in said second stable state by a relatively low alternating sustain voltage. Basically, the solid state arrangement comprises a photoconductive layer separating first and second electroluminescent layers. The first electroluminescent layer is fabricated from an electroluminescent material having an emission band within the range of the excitation band of the photoconductive material of the interposing photoconductive layer. The second electroluminescent layer is fabricated from an electroluminescent material having an emission band outside of the range of the excitation band of the photoconductive material of the interposing photoconductive layer. Typically, the electroluminescent material of the second electroluminescent layer has an emission band in the visible range suitable for display purposes.

REFERENCES:
patent: 3207905 (1965-09-01), Bray
patent: 3321631 (1967-05-01), Biard et al.
patent: 3358146 (1967-12-01), Ing, Jr. et al.
patent: 3440637 (1969-04-01), Molnar et al.
patent: 3509421 (1970-04-01), Holz
patent: 3812486 (1974-05-01), Purchase
patent: 3958207 (1976-05-01), Tutihasi

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