OLED (organic light-emitting diode) is a light-emitting diode that uses organic compounds which emit light in response to an electric current. It consists of a cathode, an emissive layer, a conductive layer, and an anode, sandwiched between two electrodes. When voltage is applied, electrons flow to the emissive layer where they combine with holes to emit light. OLEDs have advantages over LCDs like being thinner, more flexible, requiring less power, and producing higher resolution and faster switching speeds. However, OLEDs also have shorter lifetimes and are more expensive than LCDs.

1. OLED
ORGANIC LIGHT EMITTING DIODE.
BY:
DIVYANSHU BHUSHAN
C.S.E. A1,3rd
YR.
1103510019

3. Outline
 What is OLED
 How OLED works
 Types of OLEDs
 Flexible OLEDs
 How FOLEDs works
 Advantages and Challenges
 Sequitur (Conclusion)

4. INTRODUCTION
 (An OLED (organic light-emitting diode) is a light-emitting
diodeLED) in which the emissive 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 displays in devices such as
television screens, computer monitors,portable systems such as
mobile phones, handheld games consoles and PDAs

5. How OLED Works
 Cathode
 Emissive Layer
 Conductive Layer
 Anode
 Substrate

6. OLED is a display
device that
sandwiches carbon
based films between
the two electrodes
and when voltage is
applied creates light.
www.ol-ed.com

7. How OLED Works
1. Voltage applied across
Cathode and Anode
1. Typically 2V-10V
2. Current flows from
cathode to anode
1. Electrons flow to emissive
layer
2. Electrons removed from
conductive layer leaving
holes
3. Holes jump into emissive
layer
3. Electron and hole
combine and light emitted

8. Types of OLEDs
 Passive-matrix OLED
 Active-matrix OLED
 Transparent OLED
 Top-emitting OLED
 Foldable OLED
 White OLED

9. FLEXIBLE OLED

10. What the Flexible Organic Light Emitting Diode
Consist of :
The Top Layer is the Cathode layer
made of tungsten releases electrons
when current is run through it.
Emissive Layer removes electrons from
the cathode layer to make light.
Conductive layer is made from a type of
organic plastic that removes the
electron wholes
Then the Anode Layer that consist of
removing and adding electron holes
while the current is running through it
and is made from graphite particles
Followed by the Substrate layer is used
to support the Organic LED and is made
up of glass, clear plastic

11. Commercial Uses of the Organic LED

12. Some Advantages of Using Organic LED’s
The Flexible Organic LED is easily mass produced because of its unique
ability to be printed out on Ink Jet printers and sometimes Screen Printing
Technologies.
The enable people to see a wide ranged of colors and sit from almost any
angle without degrading the picture quality even at 90 degree angles.
It also has the unique ability to use less energy because of how its made up
and has better response time than other LED’s.
The problem of the longevity of the Organic LED has been over come by
adding a thin sheet of metal in with it.

13. OLED Advantages over LED and
LCD
 Thinner, lighter and more flexible
 Plastic substrates rather then glass
 High resolution (<5um pixel size) and fast
switching (1-10um)
 Do not require backlight, light generated
 Low voltage, low power and emissive source
 Robust Design (Plastic Substrate)
 Larger sized displays
 Brighter- good daylight visibility
 Larger viewing angles -170o

14. OLED Disadvantages
 Shorter Lifetime (approx 5-10 yrs)
 Expensive
 Susceptible to water
 Overcome multi-billion dollar LCD
market

15. Corporations in OLED’sCorporations in OLED’s
Small Molecule
Kodak
IBM
UDX
Ritek
Samsung
Polymer
CDT
Dupont
Philips
Dow Chemicals

16. Market Forecast

17. SEQUITUR
 OLED is a display device that sandwiches carbon based films
between the two electrodes and when voltage is applied creates
light.
 OLED has many advantages over LCDs.
 In coming future it will acquire the market due to its qualities.
 The dynamic interplay of chemistry with device physics results in
these remarkable displays.

18. References
 http://www.inhabitat.com/samsungs-super-sleek-
31-oled-tv
 www.universaldisplay.com
 www.google.com/ www.googleimages.com
 www.wikipedia.org
 www.isuppli.org