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1. (Active Matrix Organic Light Emitting Diode)
AMOLED
PresentedBy:-
NITIN GUPTA
ROLL NO.-1516431133
SECTION - EC-III-B
1
2/22/2018
nitingupta1054@gmail.com

2. CONTENT
Introduction
Principle
AMOLEDComponents
Working
Manufacturing of AMOLED
Comparison
Applications
Advantages
Disadvantages
Future Prospects
Conclusion
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3. INTRODUCTION
 Active-Matrix OLED (Active-matrix organic
light-emitting diode or AMOLED) is a display
technology .
 AMOLED is type of OLED .
 OLED describes specific type of thin display
technology and Active-Matrix refers to the
technology behind the addressing of pixels.
 An OLED is any LED whose emissive
electroluminescent layer comprises a film of
organic compounds
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4.  They are deposited in rows and columns onto a
flat carrier by a simple printing process.
 The resulting matrix of pixels can emit light of
different colors.
 AMOLEDs have full layers of cathode, organic
molecules and anode, but the anode layer overlays
a thin film transistor (TFT) array that forms a
matrix. The TFT array itself is the circuitry that
determines which pixels get turned on to form an
image.
 The active matrix technology is invented by
Bernard Lechner in 1975
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5. PRINCIPLE
 Electroluminescence (EL) is
an optical phenomenon and electrical
phenomenon in which a material
emits light in response to an electric
current passed through it, or to a
strong electric field
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6. AMOLED COMPONENT :
Cathode
Emissive layer
Conducting layer
Anode
Substrate
TFT
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7. The AMOLED display consists of a matrix of
OLED pixels, each having an anode, cathode and
a layer of organic material between them.
These pixels are activated by a thin film transistor
array which controls the current to each pixel,
enabling it to be activated and when current flows
through it, light is generated.
Typically two transistors are used for each pixel -
one to turn the charge to the pixel on and off, and
a second to provide the constant current.
This eliminates the need for the very high currents
required for passive matrix OLED operation
7Working

8. Working: 8
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9. Manufacturing Of
AMOLED
The biggest part of manufacturing
AMOLEDs is applying the organic layers
to the substrate. This can be done in three
ways:
Vacuum deposition or vacuum thermal
evaporation (VTE)
Organic vapor phase deposition
(OVPD)
Inkjet printing
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10. AMOLED LCD PLASMA
 Medium cost. Potentially the lowest cost.
 Consumes lowest power  Lower Power consumption
than plasma
 Requires backlight. Self emissive.
 Displays wider color range.  Color range not good.
 No screen burn potential
 Highest cost
 Highest power
consumption
 Requires backlight.
 Displays a very deep
black.
 Screen burn potential No screen burn potential
 Shorter overall lifetime  Backlight bulb typically
requires replace at around 30 k
hours
 Half life ~60k hours
Comparison: 10
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11. Comparison between AMOLED and TFT Display
Figure 2 – TFT Display
AMOLED has less
complexity so is much
thinner
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Figure 1 - AMOLED
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12. APPLICATIONS
Cellular/MobilePhones
MP3 Players
Digital camera
AMOLED TV
TABLET / PC
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13. Some of thePresent Gadgets 13
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14. ADVANTAGES
1. Thinner ,lighter and flexible
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15. AMOLED LCD TFT
<50uS
3000~30000uS
Fast response time means full
motion graphics can be displayed
152. FAST Response Time
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16. TFT 16
3. High Contrast Ratio
AMOLED
4. Less Power Consumption:-AMOLED power consumption depends
on image content & application.
5. Large viewing angle
6. Brightness
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17. DISADVANTAGES
•Limited Lifetime
•Expensive manufacturing process
•Easily damaged by Water
•Fabrication of substrate is complex
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18. FUTURE PROSPECTS
 Curved AMOLED
displays
 Wearable AMOLEDs
 Transparent
AMOLEDs embedded
in windows
 AMOLEDs in car
windshields
 Realizing Concept
models of various
mobile devices
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19. 19
FUTURE USE OF AMOLED
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20. CONCLUSION
 Limited use caused by degradation
of materials.
 AMOLED will replace current LED
and LCD technologies
 Flexibility and thinness will enable
many applications
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21. THANK YOU 21
ThankYou
2/22/2018