OLED is Short for organic light-emitting diode, a display
device that sandwiches carbon-based films between two charged electrodes, one a
metallic cathode and one a transparent anode, usually being glass. The organic
films consist of a hole-injection layer, a hole-transport layer, an emissive
layer and an electron-transport layer. When voltage is applied to the OLED cell,
the injected positive and negative charges recombine in the emissive layer and
create electro luminescent light. Unlike LCDs, which require backlighting, OLED
displays are emissive devices - they emit light rather than modulate transmitted
or reflected light.
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