Editing Television (section)

====OLED====
{{main|OLED}}
[[File:LG전자, 깜빡임 없는 55인치 3D OLED TV 공개(2).jpg|thumb|left|OLED TV]]

An OLED (organic light-emitting diode) is a [[light-emitting diode]] (LED) in which the [[emission (electromagnetic radiation)|emissive]] [[electroluminescence|electroluminescent]] layer is a film of [[organic compound]] which emits light in response to an electric current. This layer of [[organic semiconductor]] is situated between two electrodes. Generally, at least one of these electrodes is transparent. OLEDs are used to create [[digital display]]s in devices such as [[television set|television]] screens. It is also used for computer monitors and portable systems such as [[mobile phones]], [[handheld game console]], and [[personal digital assistant|PDAs]].

There are two main groups of OLED: those based on small [[molecule]]s and those employing [[polymer]]s. Adding mobile [[ion]]s to an OLED creates a [[light-emitting electrochemical cell]] or LEC, which has a slightly different mode of operation. OLED displays can use either [[Passive matrix addressing|passive-matrix]] (PMOLED) or [[Active matrix addressing|active-matrix]] (AMOLED) addressing schemes. Active-matrix OLEDs require a [[thin-film transistor]] backplane to switch each individual pixel on or off but allow for higher resolution and larger display sizes.

An OLED display works without a [[backlight]]. Thus, it can display deep [[black level]]s and can be thinner and lighter than a [[liquid crystal display]] (LCD). In low ambient light conditions such as a dark room, an OLED screen can achieve a higher [[contrast ratio]] than an LCD, whether the LCD uses [[cold cathode]] fluorescent lamps or [[LED-backlit LCD television|LED backlight]]. OLEDs are expected to replace other forms of display in the near future.<ref name="oled-info.com"/>