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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.
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SEMINAR ON
E-PAPER TECHNOLOGY
Introduction What is E-paper ? Construction of E-paper Working Properties Comparision of E-paper & LCD Advantages Dis-advantages Apllication Future Scope Conclusion
The first E-Paper is developed in 1974’s by Nicholas K Sheridon at Xerox’s Palo Alto Research Centre.
E-Paper is also called Electronic Paper or Electronic ink Display.
It is a display unit.E-Paper is flexible.E-paper have a wide viewing angle.A digital pen is also used to create handwritten
document.
E-Paper is an electronic ink display unit. It reflect light like ordinary paper. It is capable of holding text and images. It is flexible while using plastic materials
and electronics. It is more comfortable to read than
conventional display. A wider viewing angle. It can read directly from sunlight without
fading images.
Light weight and durable. Low power consumption.
.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
GYRICON The first Gyricon E-ink developed in 1974s by “Nick
Sheridon” at Xerox. It based on a thin sheet of flexible plastic containing a
layer of tiny plastic beads each encapsulated in oil and it rotate freely.
Each hemisphere of a bead has different colour and different electric charge.
Electric field is applied the beads are rotate, creat two-coloured pattern.
.This method have some limitations1. L .ow brightness and resolution2. .Lack of color
- Other form of E ink with improve propertys .compared to Gyricon is Electrophorestic
Electrophorestic Electrophorestic frontplane consist of millions of
micro capsules. Each approximately 100 microns in dia. Each micro capsule is filled with a clear fluid
containing positivaly charged white particle and black particle.
How Electronic Ink Works:- Basically, this form of e-paper is created by sandwiching millions of tiny plastic wells between two sheets of flexible plastic.
Each well contains both white and black particles, suspended within a clear fluid.
The key to this technology is that the white and black particles have opposite charges, so when an electric voltage is applied to individual wells -- through circuitry embedded underneath -- the black and white particles can be separated to opposite sides.
In this way, the face-up side of each well can be set to appear either as black or white as seen through the top layer of clear plastic.
Each well functions as a separate pixel on the E ink display..
The disadvantage of this technology is it take time for the particle to move from .one side to another
Drawing a new text or image is too slow and .creat a flicker
Ultra-thin and flexible energy cell. Eliminates the cost of the battery,weight
and volume of the battery holder. Can be made into almost any shape. Can be integrated on almost any surface.
Low cost and simple to produce, using printing process.
Environmentally friendly, non-caustic, no possibility of explosion, burns, or overheating.
Electronic ink Electronic ink displaydisplay
Liquid Crystal Liquid Crystal DisplaysDisplays
Wide viewing angle Best image only from one position
Black on paper white
Gray on gray
Readable in sunlight Can be difficult to see
Holds image without power drain
Required power to hold images
Electronic ink displayElectronic ink display Liquid Crystal Liquid Crystal DisplaysDisplays
Plastic or glass Glass only
Light Weight Power supply and glass make LCDs relatively heavy
Thin (~1 mm) Thick (~7 mm)
Paper-like Readability. Ultra-Low Power Consumption. Clarity. Reduced Eyestrain. Mobile Display Solution. Hypertext. Multimedia Information. Include Graphics. Inexpensive.
Very low switching speed Electrochemical complexity Slow response to change Too slow for video Problems in extremes
temperatures,humidity
Electronic Book. Electronic Newspaper. .Mobile display C .omputer monitor
The E-Paper is a Flexible display. It is easy to use. E-Paper can communicate Satellite or other
computers easily.
Hand WandDetach Printer
Researches found that in
just few years this technology
can replace paper in many situations, leading us to think of a truly paperless world.
