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
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