Perfect presentations ,complete description about OLED technology

1. OLED
Submitted To Submitted By
Computer Department Shubham Kanojia
1511
MCA -4th sem

2. What is an OLED ?
 OLED – Organic Light Emitting
Diode
 A light-emitting diode containing
thin flexible sheets of an organic
electroluminescent material, used
for visual displays.
 Ching W. Tang and Steven Van
Slyke reported the first OLED
device .

3. Components of OLED
 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.
 Organic Layers : - These layers are made of organic
molecules or polymers.
 Conducting Layers : - This layer is made of organic
plastic molecules that transport "holes" from the anode.
One conducting polymer used in OLEDs is polyaniline.
 Emissive Layer : - This layer is made of organic plastic
molecules (different ones from the conducting layer)
that transport electrons from the cathode; this is where
light is made. One polymer used in the emissive layer is
polyfluorene.
 Cathode : (may or may not be transparent depending
on the type of OLED) - The cathode injects electrons
when a current flows through the device.

4. How OLEDS Work

5. Types of OLED
Passive OLEDS
 The organic layer is between
cathode & anode run
perpendicular.
 The intersections form the pixels.
 Easy to make.
 Use more power.
 Best for small screens.

6. 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.

7. Applications of OLED
• Televisions
• SONY
• LG transparent TV
• Cell Phone screens
• Wrist Watch
• Computer Screens
• Laptops
• Desktops
• Bendable Devices
• Portable Device displays
• Philips Go Gear MP3 Player

8. Advantages
 Faster response time than LCDs
 Consume significantly less energy
 Can be transparent when off
 Flexible and Conformal Displays
 Thinner display-No backlight required
 Better contrast ratio.
 Safer for the environment
 Wider viewing angles; up to 170 degrees
 OLEDs refresh almost 1,000 times faster then LCDs
 Low cost materials and fabrication method
 Less Expensive than LCD due to lesser components
 Can be made using plastic screens; LCDs require glass backing

9. Disadvantages
OLED seems to be the perfect technology for all types of
displays, but it also has some problems:
 Lifetime - While red and green OLED films have longer
lifetimes (46,000 to 230,000 hours), blue organics
currently have much shorter lifetimes (up to around
14,000 hours).
 Manufacturing - Currently, manufacturing is more
expensive than LCDs.
 Water - Water can easily damage OLEDs.
 OLED screens are even worse than LCD in direct
sunlight.
 Overall luminance degradation.
 Limited market availability

10. Conclusion
 Easily Portable because it can be folded and keep it at anywhere.
 Currently, there is a lot of research and development going on in the
field of OLEDs and experts feel that these might lead to novel
applications such as automotive dashboards, heads-up displays,
home and office lighting and billboard-type displays in the future.
 OLED devices can keep refreshing information at real time and
videos can look more realistic in them. So we can also fancy thin
and foldable OLED newspapers in the future, which keep refreshing
news even as you read them!

11. References
www.howstuffworks.com/oled
www.oled-info.com/introduction
www.oled-info.com
https://en.wikipedia.org/wiki/OLED

12. Thank You

13. Fast Response Time
OLED LED
Fast response time means full motion graphics can be displayed

14. Wide Viewing Angle
Wide viewing angle.