Imagine having a high-definition TV that is 80 inches wide and less than a quarter-inch thick, consumes less power than most TVs on the market today and can be rolled up when you're not using it. What if you could have a "heads up" display in your car? How about a display monitor built into your clothing? These devices may be possible in the near future with the help of a technology called organic light-emitting diodes (OLEDs).
OLEDs are solid-state devices Just like normal LCD diodes composed of thin films of organic molecules that create light with the application of electricity.When electrical current is applied, a bright light is emitted.
OLEDs can be used to make displays and lighting. Because OLEDs emit light they do not require a backlight and so are thinner and more efficient than LCD displays(which do require a white backlight). OLEDs can provide brighter, crisper displays on electronic devices and use less power than conventional light-emitting diodes(LEDs) or liquid crystal displays(LCDs) used today.
The basic structure of an OLED is a cathode (which injects electrons), an emissive layer which is nothing but organic layer and an anode (which removes electrons). Modern OLED devices use many more layers in order to make them more efficient, but the basic functionality remains the same.
Today OLED displays are used mainly in small (2" to 5") displays for mobile devices such as phones, cameras and MP3 players. OLED displays carry a price premium over LCDs, but offer brighter pictures and better power efficiency - making it ideal for battery powered gadgets. Making larger OLEDs is possible, but difficult and expensive. There are some OLED TVs available, but these are expensive. Sony has announced the XEL-1 11quot; OLED TV back in 2007 - at about $2,500. LG is also offering an OLED TV (the 15"EL9500) which is also expensive and isn't being mass produced. Mass production of price-competitive OLED TVsets will probably begin towards the end of 2012 or early 2013.
OLEDs are solid-state devices Just like normal LCD diodes composed of thin films of organic molecules that create light with the application of electricity.When electrical current is applied, a bright light is emitted.
OLEDs can be used to make displays and lighting. Because OLEDs emit light they do not require a backlight and so are thinner and more efficient than LCD displays(which do require a white backlight). OLEDs can provide brighter, crisper displays on electronic devices and use less power than conventional light-emitting diodes(LEDs) or liquid crystal displays(LCDs) used today.
The basic structure of an OLED is a cathode (which injects electrons), an emissive layer which is nothing but organic layer and an anode (which removes electrons). Modern OLED devices use many more layers in order to make them more efficient, but the basic functionality remains the same.
Today OLED displays are used mainly in small (2" to 5") displays for mobile devices such as phones, cameras and MP3 players. OLED displays carry a price premium over LCDs, but offer brighter pictures and better power efficiency - making it ideal for battery powered gadgets. Making larger OLEDs is possible, but difficult and expensive. There are some OLED TVs available, but these are expensive. Sony has announced the XEL-1 11quot; OLED TV back in 2007 - at about $2,500. LG is also offering an OLED TV (the 15"EL9500) which is also expensive and isn't being mass produced. Mass production of price-competitive OLED TVsets will probably begin towards the end of 2012 or early 2013.
In the OLED lighting market, several companies (such as Philips, OSRAM and Lumiotec) are already shipping OLED panels, but these are small and very expensive, mostly used in premium lighting fixtures and as experimental design kits.
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