This document provides an overview of e-paper technology. It discusses the history and construction of e-paper, including that it consists of microcapsules containing charged white and black particles. The document outlines different e-paper technologies such as gyricon, electrophoretic and electrowetting displays. It also covers the advantages of e-paper like low power consumption and paper-like readability. Applications are mentioned including e-books, electronic signs and newspapers. Finally, it suggests that e-paper may replace paper in many uses in the future.
E-paper is one of the types of displays, which have a unique property of being flexible. also it acn be used similarly as a paper. the files that need to be accessed on it should be loaded by certain interfaces.
E-paper is a portable, reusable storage and display medium that looks like paper but can be repeatedly written on (refreshed) - by electronic means - thousands or millions of times.
In these presentation ,we have discussed about E-paper technology and it's construction,advantages,disdvantages and applications. Also, future scopes of E-paper have been discussed.
E-paper is one of the types of displays, which have a unique property of being flexible. also it acn be used similarly as a paper. the files that need to be accessed on it should be loaded by certain interfaces.
E-paper is a portable, reusable storage and display medium that looks like paper but can be repeatedly written on (refreshed) - by electronic means - thousands or millions of times.
In these presentation ,we have discussed about E-paper technology and it's construction,advantages,disdvantages and applications. Also, future scopes of E-paper have been discussed.
E-paper is a revolutionary material that can be used to make next generation electronic displays. It is portable reusable storage and display medium that look like paper but can be repeatedly written one thousands of times. These displays make the beginning of a new area for battery power information applications such as cell phones, pagers, watches and hand-held computers etc.
Like traditional paper, E-paper must be lightweight, flexible, glare free and low cost. Research found that in just few years this technology could replace paper in many situations and leading us ink a truly paperless world.
Electronic Paper is also called Electronic ink DisplayUnlike conventional backlit flat panel displays which emit light, E-paper displays reflect light like ordinary paper.It can be described as an easily transportable electronic display device that looks like real paper and can be rewritten millions of times.
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.
E-paper is a revolutionary material that can be used to make next generation electronic displays. It is portable reusable storage and display medium that look like paper but can be repeatedly written one thousands of times. These displays make the beginning of a new area for battery power information applications such as cell phones, pagers, watches and hand-held computers etc.
Like traditional paper, E-paper must be lightweight, flexible, glare free and low cost. Research found that in just few years this technology could replace paper in many situations and leading us ink a truly paperless world.
Electronic Paper is also called Electronic ink DisplayUnlike conventional backlit flat panel displays which emit light, E-paper displays reflect light like ordinary paper.It can be described as an easily transportable electronic display device that looks like real paper and can be rewritten millions of times.
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.
Smart Paper Technology a Review Based On Concepts of EPaper Technologyiosrjce
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2. Contents
Introduction
History
Construction
Technologies
Highlights of E-ink
Advantages
Disadvantages
Challenges
Applications
Conclusion
References
2:36:56 PM
2
3. Introduction
E paper is a revolutionary material that can be
used to make next generation electronic
displays.
Also named as radio paper or smart paper.
Portable , reusable storage and display
medium.
E paper display is a display technology
designed to mimic the appearance of ordinary
ink on paper.
Unlike conventional displays , e-paper reflects
light just like paper.
Capable of holding text and images.
2:36:56 PM
3
4. Cont..
2:36:56
PM
4
Has potential to be more comfortable to read.
Today’s E displays have evolved to be more light
weight , efficient and clear.
Yet the importance of paper has not diminished.
It offers us a paperless world and relieves us from
carrying loads of paper.
E-ink is a pioneering invention that combines all
the desired features of a modern E display.
Paper would be perfect except for one obvious
thing: printed words cannot be changed.
5. History
Two companies are working on this.
One is at Cambridge in USA.
The other is Xerox at Xerox's Palo Alto
Research centre.
It was first developed in 1970’s by Nick
Sheridon at Xerox's Palo Alto Research
centre.
2:36:56 PM
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6. Construction
It has two different parts.
Front plane.
Back plane.
The front plane consist of E-ink.
The back plane consist of electronic circuits.
2:36:56 PM
6
7. Front panel
2:36:56 PM
7
• The front plane consist of E-ink.
• E-ink is made up of millions of tiny
microcapsules.
• Microcapsules have diameter of the order
of 100 microns.
• Each microcapsule contains positively
charged white particles and negatively
charged black particles suspended in a
clear fluid .
10. Gyricon
The first Gyricon developed in 1970 by
“Nick Sheridon” at Xerox Palo Alto
Research Centre.
Consists of polyethylene spheres, which
is a JENUS particle.
The polarity of the voltage applied to each
pair of electrodes then determine whether
the white or black side is face-up.
It is based on a thin layer of transparent
flexible plastic containing a layer of tiny
plastic beads each encapsulated in oil
and it rotate freely.
2:36:56 PM
10
12. Electrophoretic
It has titanium dioxide particles dispersed in
hydrocarbon oil.
A dark colored dye is also added to the oil ,
along with surfactants and charging particles.
It is placed between two parallel, conductive
plates.
When the voltage is applied across them, the
particles will migrate electrophoeretically.
When the particles at the front side of the
display, it appears white. 2:36:56 PM
12
14. Electrowetting
2:36:56 PM
14
Electrtrowetting display is based on controlling the
shape of a confirm water/oil interface by an applied
voltage.
With no voltage applied , the colored oil forms a flat
film between water and a hydrophobic(water repellent)
, insulating coating of an electrode , resulting in a
colored pixel.
When a voltage is applied between the electrodes and
the water, the interfacial tension between the water
and the coating changes.
As a result the stacked state is no longer stable,
causing the water to move the oil aside.
Switching is fast, low-power, low-voltage technology,
reflectivity and contrast are better.
15. Electrofluidic
2:36:56 PM
15
Electrofluidic displays are a variation of an
electrowetting displays.
They place an aqueous pigment dispersion inside
a tiny reservoir.
The reservoir comprises < 5-10% of the viewable
pixel area and therefore the pigment is
substantially hidden from view.
Voltage is used to electromechanically pull the
pigment out of the reservoir and spread it as a film
directly behind the viewing substrate.
Hence it takes on color and brightness similar to
that of conventional pigments on paper.
16. Requirements for E-paper
technologies
Power
Resolution
Contrast Ratio
Viewing angle
Cost
Refresh Time
Reflectance (brightness)
Flexible
Light weight
Power It should be Bi-Stable;
uses zero power to retain a still
image.
Minimum of 150 dpi
10:1
More than 100 degrees,
preferable close to 180 degrees.
Cheap, the price should be
almost comparable to paper.
Less than 1 second
Should be readable in sunlight,
reflectance should be more than
30%
It should be bendable
It should be almost as light
weighted as a paper-card.
2:36:56 PM
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17. Comparision E paper and LCD
Wide viewing angle
Black on paper white
Readable in sunlight
Holds image without
power drain
Plastic or glass
Light Weight
Thin (~1 mm)
Best image only from
one position
Gray on gray
Can be difficult to see
Required power to hold
images
Glass only
Power supply and glass
make LCDs relatively
heavy
Thick (~7 mm)
2:36:56 PM
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Electronic ink display Liquid cyrstal display
20. Challenges
2:36:56 PM
20
A method for encapsulation.
An ink or active material to fill the
encapsulation.
Electronics to activate the ink.
21. Disadvantages
2:36:56 PM
21
• Very low switching speed.
• Electrochemical complexity.
• Very low refresh rate.
• Imprint of an image may be visible after
refreshing parts of the screen. Imprints are
known ghost images.
24. Future scenario
2:36:56 PM
24
The Holy Grail of E-ink technology is a digital
book that can typeset itself and that readers
could leaf through just as if it was made of
regular paper.
Once you have finished, you could
automatically replace it by wirelessly
downloading the latest book from a computer
database.
Just as E ink could radically change the way
we read books , it could change the way you
recieve your daily newspapers.
25. Conclusion
2:36:56 PM
25
Researches found that in just few years this
technology can replace paper in many
situations, leading us to think of a truly
paperless world.