Organic light-emitting diodes (OLEDs) are light-emitting diodes that use organic compounds that emit light in response to an electric current. There are several types of OLEDs including passive matrix OLEDs, active matrix OLEDs, transparent OLEDs, flexible OLEDs, and white OLEDs. OLEDs have advantages over LCDs like being thinner, lighter, more flexible, having a faster response time and wider viewing angles. However, OLEDs also currently have disadvantages like higher costs and issues with lifespan, water damage, and color balance. Major applications of OLEDs today include use in OLED TVs, mobile phone displays, and potentially future roll-

1. OLED TECHNOLOGY
By:-
Addepalli Sri Chandra Sekhar

2. These all devices may be possible in the future
with the help of a technology called
Organic Light Emitting Diode

3. What is an OLED?
An OLED is any
light emitting diode
in which organic
layers are
responsible for
light emission

4. The Basic principal
 Electroluminescence is a process in which a
material emits light in response to electrical
field applied across it.

5. Types of OLED
Six types of OLEDs
 Passive matrix OLED(PMOLED)
 Active matrix OLED(AMOLED)
 Transparent OLED(TOLED)
 Top emitting OLED
 Flexible OLED(FOLED)
 White OLED(WOLED)

6. Passive matrix OLED
 The organic layers are between strips of
cathode and anode.
 The intersections form the pixels.
 Easy to make
 Uses more power

7. Active matrix OLED
 Full layers of cathode and anode
 Anode overlays a thin film
transistor(TFT)
 Requires less power
 Higher refresh rates

8. Transparent OLED
 Transparent OLEDs have only
transparent components
(substrate, cathode and anode)
 When turned off, are up to 85
percent as transparent as their
substrate

9. Flexible OLED
 Foldable OLEDs have
substrates made of very
flexible metallic foils or
plastics

10. White OLED
 White OLEDs emit white
light that is brighter, more
uniform and more energy
efficient

11. Top emitting OLED
 Top-emitting OLEDs have
a substrate that is
reflective

12. OLED ADVANTAGES
 Thinner, lighter and more flexible
 Do not require backlighting like LCDs
 Can be made to larger sizes
 Large fields of view, about 170 degrees
 Faster response time
 Brighter
 High resolution, <5um pixel size

13. OLED DISADVANTAGES
 Expensive
 Lifespan
 Water damage
 Color balance issues

14. OLED VS LCD
OLED LCD
•Greater view angle. •Limited view angle.
•High contrast. •Low contrast.
•Faster response time. •Slow response time.
•Do not require
backlighting.
•Require backlighting.
•Temperature(50 C – 80 C) •Temperature(0 C – 100 C)

15. Applications
Major applications of OLED technology are
o OLED TV
o Mobile phones with OLED screens
o Roll top Laptop

16. Thank you