I was presented this ppt in college ......... A durable and flexible display with low-power consumption, high-contrast ratio, has been a technical challenge for nowadays. They have to be lightweight, rugged, and in some cases, conformal, wearable, rollable and unbreakable. The recent successful integration of flexible display technologies and the traditional web-based processing and/or inkjet technologies has opened up the possibility of low cost and high throughput roll-to-roll manufacturing and has shown the potential to replace the paper used today. A flexible display cannot rely on a normal layer of glass as used in displays common at the time since glass does not fulfill the criteria of flexibility. Instead of glass it is possible to build displays on metal foil and a variety of plastics, each of which pose many difficult issues waiting to be resolved. For example, a plastic substrate replacing glass would need to over some properties of glass, i.e. clarity, dimensional stability, thermal stability, barrier, solvent resistance and a low coefficient of thermal expansion coupled with a smooth surface. No plastic isomers have all these properties, yet, so any plastic-based substrate will almost certainly be a multilayer composite structure.

1. FLEXIBLE DISPLAY
By
P. SAIKIRAN
(12631A0469)
Electronics And Communication Engg.
Guide:
S. BALAIAH M.Tech,(Ph.D)
Asso. Professor
Monday, February 13, 2017 1
SRI VENKATESWARA ENGINEERING
COLLEGE

2. AIM
• To understand the various
flexible display
technologies.
• To reduce the breaking of
glass of mobile phones.
Monday, February 13, 2017
SRI VENKATESWARA ENGINEERING
COLLEGE
2

3. What Makes Flexible Display
Attractive ?
• Light weight
• Very thin
• The ability to curve
• Portability
• Low power
Monday, February 13, 2017
SRI VENKATESWARA ENGINEERING
COLLEGE
3

4. Different Types Of Flexible Display
Technologies
Based on either Reflectivity or Emissivity:
there are two forms of displays
• Flexible E-Paper based displays and
• Flexible LED based displays.
Monday, February 13, 2017
SRI VENKATESWARA ENGINEERING
COLLEGE
4

5. Construction of E-Paper
• It has two different parts
•Front plane
•Back plane
• The front plane consist of E-ink
• The back plane consist of
electronic circuits
• To form an E-ink electronic
display the ink is printed onto a
plastic film that is laminated to a
layer of circuitry
Monday, February 13, 2017
SRI VENKATESWARA ENGINEERING
COLLEGE
5

6. Functionality
• The new paper phone is made of two layers: the
e-ink display and a flexible printed circuit with
bend sensors.
• Flexible printed circuit with resistive bend
circuits, which are used to identify the bending of
the display screen.
• The user actually chooses the function by
bending the PCB
Monday, February 13, 2017
SRI VENKATESWARA ENGINEERING
COLLEGE
6

7. Structure of OLED
Technology
• Substrate
• Anode
• Cathode
• Conductive layer
• Emissive layer
Monday, February 13, 2017
SRI VENKATESWARA ENGINEERING
COLLEGE
7

8. Working Of OLED Technology
• A voltage is applied across
the OLED such that the
anode is positive with
respect to the cathode.
• Current flows from cathode
to anode through the organic
layers.
• Electron and hole combine
and emit light.
Monday, February 13, 2017
SRI VENKATESWARA ENGINEERING
COLLEGE
8

9. Flexible OLED
• A flexible OLED is a
type of OLED
incorporating a flexible
plastic substrate on
which the
electroluminescent
organic semiconductor
is deposited.
Monday, February 13, 2017
SRI VENKATESWARA ENGINEERING
COLLEGE
9

10. APPLICATIONS
• Lighting:
• Cell Phones:
• Transparent Car Navigation System on
Windshield:
• Information media, watch, price tag
• Notebook PC, desktop
• TV, HDTV, Large displays education,
advertisement, video walls
Monday, February 13, 2017
SRI VENKATESWARA ENGINEERING
COLLEGE
10

11. ADVANTAGES
• Thinner, Lighter ,Flexible
• Low Power Consumption
• High brightness
• Contrast Ratio Over 1,000,000:1
• Low cost and size
Monday, February 13, 2017
SRI VENKATESWARA ENGINEERING
COLLEGE
11

12. DISADVANTAGES
• Limited market availability.
• Less Lifetime
• Manufacturing
• Damage by water
Monday, February 13, 2017
SRI VENKATESWARA ENGINEERING
COLLEGE
12

13. FUTURE SCOPE
• Flexible displays are evolving as the next
generation displays.
• Improve hardware that can refresh page
quickly
• More advanced wireless capabilities
Monday, February 13, 2017
SRI VENKATESWARA ENGINEERING
COLLEGE
13

14. CONCLUSION
• Flexible electronic displays have the opportunity to
revolutionize an Industry.
• Effort to understand the failure limits and
mechanisms have been gaining momentum.
• As the components and manufacturing processes of
flexible electronics mature, the concept of flexible
flat panel display will eventually become a reality.
Monday, February 13, 2017
SRI VENKATESWARA ENGINEERING
COLLEGE
14

15. REFERENCES
• www.slideshare.com
• www.youtube.com
Monday, February 13, 2017
SRI VENKATESWARA ENGINEERING
COLLEGE
15

16. THANK YOU
Monday, February 13, 2017
SRI VENKATESWARA ENGINEERING
COLLEGE
16

17. Monday, February 13, 2017
SRI VENKATESWARA ENGINEERING
COLLEGE
17