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ORGANIC LIGHT EMITTING DIODES or OLEDs
presented by S.GAYATHRI(115011013887)
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B.TECH ECE 2ND YEAR
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 500Nanometers thick
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 devices5
TYPES OF OLED LAYERS
2
CATHODELAYER
1ANODELAYER
3CONDUCTIVE
LAYER
4
EMISSIVELAYER
5SUBSTRATE
LAYER
SUBSTRATE LAYER
EMISSIVE LAYER
CATHODE LAYER
ANODE LAYER
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
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
layerNegative
emissive layer
They are helpful in
conducting
TYPES OF OLEDs
PASSIVE OLED:
OLEDs are easy to makeACTIVE 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
APPLICATIONS OF OLED DISPLAY TECHNOLOGY
1 TVs
2 Cell phone screens
3 Computer screens
4keyboards
5Lights
6Portable device
7Smart card
8Light source
OLEDTECHNOLOGY
it helpful For
Marketresearch
OLED is increasing
many products
growing number of electronic
devices
Comparing to liquid crystal displays OLED is use less power.
CONCLUSION