An organic light-emitting diode (OLED) is a thin-film
light-emitting diode (LED) in which the emissive layer is an
organic compound. OLED technology is intended primarily as picture
elements in practical display devices. These devices promise to be
much less costly to fabricate than traditional LCD displays. When
the emissive electroluminescent layer is polymeric, varying amounts
of OLEDs can be deposited in rows and columns on a screen using
simple "printing" methods to create a graphical colour display, for
use as television screens, computer displays, portable system
screens, and in advertising and information board applications.
OLED may also be used in lighting devices. OLEDs are available as
distributed sources while the inorganic LEDs are point sources of
light. Prior to standardization, OLED technology was also referred
to as OEL or Organic Electro-Luminescence.
One of the great benefits of an OLED display over the traditional
LCD displays is that OLEDs do not require a backlight to function.
This means that they draw far less power and, when powered from a
battery, can operate longer on the same charge.
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