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Casio comes to mind when coming up with EL devices for example. The classic G-shock I have on my wrist right now touts a "Electro Luminescent Backlight", though

by Slump 6y ago

Casio comes to mind when coming up with EL devices for example. The classic G-shock I have on my wrist right now touts a "Electro Luminescent Backlight", though I rarely use the light.