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'''OLED (Organic Light Emitting Diodes)''' is a flat display technology, made by placing a series of organic thin films between two conductors. When electrical On applying an electric current is applied, a bright light is emitted. OLED OLEDs use organic semiconductor materials material instead of inorganic semiconductor materials material used in conventional Light Emitting Diodes (LEDLEDs). Through a process called electrophosphorescence, organic light-emitting diodes, or OLEDS, produce OLEDs emit light in the presence of an electric current. Like any other diode, OLEDs only permit an electric current to pass only in one direction. Unlike diodes made from inorganic semiconductors, however, OLEDs are very flexible because they are only '''100 to 500 nanometers''' thick, which is about '''makes the human hair 200 times''' smaller thicker than the thickness of a human hairit. As a result, OLEDs OLED screens are very flexible and can be made in very large sheets. They OLEDs use less 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 as follows: 

The ten biggest most prominent applications for OLEDs over the next eighteen months arewould be:

The key players in the OLED screen mobile phone category are:

===Advantages and Disadvantages of OLEDOLEDs===