A Presentation On

E-PAPER

BY:Manjunath C Harapanahalli

CONTENTS

Introduction

Construction of e-paper

Working

Properties

Comparison of e-paper & LCD

Advantages & Disadvantages

Applications

Conclusion

INTRODUCTION E-Paper is also called Electronic Paper or Electronic

ink Display.

The first E-Paper was developed in 1974’s by “Nicholas

K Sheridon” at Xerox’s Palo Alto Research Centre.

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.

-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

PROPERTIES

High resolution (150dpi or better)

High contrast, equal to that of print on paper

Readable in any ambient light conditions

Readable at any viewing angle

CONTD. …

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

Environmental friendly, non-caustic, no possibility of explosion, burns, or overheating

When a voltage is applied across two plates, the particles will migrate electrically to the plate bearing the opposite charge from that on the particles

There is a slightly negatively charged ink between two arrays of electrodes

The electrodes are charged to repel the ink to the surface, effectively turning them ON and OFF

WORKING

CONTD….

CONTD…

When particles are located at the front side of display, it appears white.

When particles are located at rear side of the display, it appears dark.

The display forms visible images by rearranging charged particles using an applied electric filed

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COMPARISON OF E-PAPER & LCD

Electronic Ink Display

Liquid Crystal Display

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

Plastic or glass Glass only

Light Weight Power supply and glass make LCDs relatively heavy

Thin (~1 mm) Thick (~7 mm)

ADVANTAGES• Paper-like Readability

• Clarity

• Reduced Eyestrain

• Include Graphics

• Inexpensive

DISADVANTAGESo Cannot support animation

o Limited colour display

o Complexity

o Piracy

o Expensive

o Very low switching speed

APPLICATIONS

Electronic Book Electronic Newspaper Mobile display C omputer monitor

CONCLUSION

When fully developed, electronic paper will distinguish itself

from other display technologies because it can serve as a

medium for communications and interaction in addition to

being solely a visualization mechanism.

It is this great promise that makes electronic-paper

developments in the not-too-distant future very much worth

watching

THANK YOU