Organic light-emitting diode (OLED) is a light-emitting diode (LED) made of semiconducting organic polymers. The best efficiency of an OLED so far is about 10%. These devices promise to be much cheaper to fabricate than inorganic LEDs, and large arrays of them can be deposited on a screen using simple printing methods to create a graphical colour display.
One of the great benefits of an OLED display over the traditional LCD displays found in computer displays is that OLED displays don't require a backlight to function. This means that they draw far less power and they can be used with portable devices which mostly use monochrome low-resolution displays. This will also mean that they will be able to last for long periods of time with the same amount of battery charge.