Presented by
Bhoopendra singh

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OLED(Organic Light Emitting Diode)
What is an OLED?
OLED - Organic Light Emitting Diode
An OLED is any light emitting diode (LED) which emissive electroluminescent layer is composed of a film of organic compounds.
History of OLEDs
First developed in the early 1950s in France
Early technology would emmite a short burst of light when a voltage was applied
This early form applied high-voltage alternating current field to crystalline thin films of acridine orange and quinacrine.
Architecture of OLEDs
Substrate (clear plastic, glass, foil) - The substrate supports the OLED.
Anode (transparent) - The anode removes electrons (adds electron "holes") when a current flows through the device.
Types of OLEDs
Passive OLEDs
The organic layer is between strips of cathode and anode that run perpendicular
The intersections form the pixels
 Easy to make
Use more power
Best for small screens
Active OLEDs
Full layers of cathode and anode
 Anode over lays a thin film transistor (TFT)
Requires less power
Higher refresh rates
Suitable for large screens
Current Research for OLEDs
Manufacturers focusing on finding a cheap way to produce
"Roll-to-Roll" Manufacturing
Increasing efficiency of blue luminance 
  Boosting overall lifespan
Applications of OLEDs
TVs
Cell Phone screens
Computer Screens
Keyboards (Optimus Maximus)
Lights
Portable Divice displays
OLEDs as a Light Source
OLED Televisions
Released XEL-1 in February 2009. 
First OLED TV sold in stores.
11'' screen, 3mm thin
$2,500 MSRP
Weighs approximately 1.9 kg
Wide 178 degree viewing angle
1,000,000:1 Contrast ratio
Optimus Maximus Keyboard
Advantages of OLEDs
Much faster response time
Consume significantly less energy
Able to display "True Black" picture
Wider viewing angles
Thinner display
Better contrast ratio
Safer for the environment
Has potential to be mass produced inexpensively
OLEDs refresh almost 1,000 times faster then LCDs
Disadvantages of OLEDs
OLED Displays Vs. LCD and Plasma
Cost to manufacture is high
Overall luminance degradation
Constraints with lifespan 
Easily damaged by water
Limited market availability
OLED Lighting Vs. Incandescent and Fluorescent 
Not as easy as changing a light bulb
Future Uses for OLED
Lighting
Flexible / bendable lighting
Wallpaper lighting defining new ways to light a space
Transparent lighting doubles as a window
Future Uses for OLED
Transparent Car Navigation System on Windshield
Using Samsungs' transparent OLED technology
Heads up display 
GPS system 
Scroll Laptop
Nokia concept OLED Laptop