G - Physics – 06 – F
Patent
G - Physics
06
F
375/38, 345/6
G06F 3/14 (2006.01) G09F 13/22 (2006.01) G09G 3/00 (2006.01) G09G 3/30 (2006.01) G11C 11/42 (2006.01) H05B 33/12 (2006.01)
Patent
CA 1040767
ELECTROLUMINESCENT MEMORY AND DISPLAY DEVICE 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 photo- conductive 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 photoconduc- tive material of the interposing photoconductive layer. The second electroluminescent layer is fabricated from an electro- luminescent 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.
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