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/* OLED Technology - An Overview */
==OLED Technology - An Overview==
'''OLED (Organic Light Emitting Diodes)''' is a flat display technology, made by placing a series of organic thin films between two conductors. On applying an electric current, a bright light is emitted. OLEDs use organic semiconductor material instead of inorganic semiconductor material used in conventional Light Emitting Diodes (LEDs). Through a process called electrophosphorescence, OLEDs emit light in the presence of an electric current. Like any other diode, OLEDs permit electric current to pass only in one direction. Unlike diodes made from inorganic semiconductors, OLEDs are very flexible because they are only '''100 to 500 nanometers''' thick, which makes - the human hair is 200 times thicker than it. As a result, OLED screens are very flexible and can be made in very large sheets. OLEDs use lesser energy than LEDs as well.
The easiest way to understand OLEDs is to compare them to LCDs. LCDs are made by placing a color filter over a white backlight source – filtering out the colors that are not wanted for each pixel. If you want to display blue, you'll have to filter out green and red. OLEDs, on the other hand, are emissive, which means that you simply need to display the colors you need for each pixel, which is made from three color (RGB) OLED “pixels.”
An OLED can be made of a single layer of organic material but multiple layers increase efficiency and effectiveness. A typical OLED is comprised of five layers of material:
[[Image:OLED Structurestruct.jpg|thumb|center|400px800px|[http://electronics.howstuffworks.com/oled1.htm Source: How Stuff Works]]]
===Types of OLED construction===
