about organic light emitting diodes

1. ORGANIC LIGHT EMITTING
DIODES or OLEDs
presented by
S.GAYATHRI(115011013887)
All Rights reserved. Not for distribution. Single user license

2. B.TECH ECE 2ND YEAR

3. ORGANIC LIGHT EMITTING DIODES or OLEDs
It differs with low power and
Combination of great colors
1
It principles of electroluminiescence2
OLEDs are used to create digital
Displays in devices such as cameras etc
3
These are diodes are about 100 to 500
Nanometers thick
4

4. ARCHITECTURE OF OLED TECHNOLOGY
1 Amorphous and
crystalline molecules
2 Arranged in irregular
pattern
3 It has many thin layers
of organic materials
4 There are several thin
and functional layers
It can be achieved by using
multi-layered devices
5

5. TYPES OF OLED LAYERS
2
CATHODE
LAYER
1
ANODE
LAYER
3
CONDUCTIVE
LAYER
4
EMISSIVE
LAYER
5
SUBSTRATE
LAYER

6. 4 Layers stacked up
1.It is an active layer and
removes electron
2.Making of this layer is
done by barium
calcium etc
3. It is made of organic
plastic molecules
4.This substrate supports
the OLED structure

7. WORKING OF OLED
Anode and
cathode are
used for
OLEDs
Emissive layer
becomes
negative
charger
Conductive
layer become
positive
charger
OLEDs also work
as diodes if
current flows in
correct direction
To creates
radiation that
varies in
frequency
range
This may lead
to change in
electrical levels
Due to
electrostatic
forces applied,
the electrons
move the
Positive
conductive
layer
Negative
emissive layer
They are
helpful in
conducting

8. TYPES OF OLEDs
PASSIVE OLED:
OLEDs are easy to make
ACTIVE MATRIX OLED:
OLED requires thin film transistor
It is used in efficient lighting systems
WHITE OLED:
FOLDABLE OLED:
OLEDs are made up of flexible foil

9. APPLICATIONS OF OLED DISPLAY TECHNOLOGY
1 TVs
2 Cell phone screens
3 Computer screens
4
keyboards
5Lights
6Portable device
7Smart card
8
Light source
OLED
TECHNOLOGY

10. it helpful
For
Market
research
OLED is
increasing
many
products
growing
number of
electronic
devices
Comparing to
liquid crystal
displays OLED
is use less
power.
CONCLUSION