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Flexible Electronic
Paper Display
A technical seminar on
Presented by: LOKESH JAIN
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Contents
Objective Introduction History Construction Functionality Comparisons Present and future of E-paper Advantages & Disadvantages Application Conclusion References
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Objective
To understand the electronic flexible display
To reduce the breaking of glass of mobile phones
To reduce the extra weight in your pocket for carrying smartphones
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Introduction
A flexible display is a display which is flexible in nature
E-Paper is also called Electronic Paper or Electronic Ink Display
E-Paper have a wide viewing angle
E-Paper phone is made by e-paper, and users is allowed to bend body of phone cause it is flexible
Fig.1:Flexible display
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Cont…..
E-Paper Phone performs everything same as a smartphone
The flexible display allows users to interact with the phone by twisting, bending and folding in different manners across both the vertical and horizontal planes
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What makes flexible electronic display attractive?
• Rugged• Light weight• Very thin• The ability to curve,flex,roll,fold• Portability• Low power• Non-breakable
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History of Electronic Paper
• First developed in the 1970’s by Nick Sheridon
at Xerox’s Palo Alto Research Center
• First Electronic Paper was called Gyricon
• 1990’s- Joseph Jacobsen created another
version of E-paper
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How the image seen on the E-paper
Black particle move to top of microcapsule and white particle move to bottom of microcapsule where they become visible,making the pixel
To increase the resolution of image each microcapsule can be controlled by more than one electrode on each side,allowing it to appear half black and half white
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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
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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 For example: you can choose to bend the upper-right corner to
make a call, or bend the lower left to listen to music
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Cont....
We have software that collects the values given by the bend sensors
These gestures are then fed into a gesture-recognition engine trained to associate certain movements with certain instructions
For example: bending the bottom corner of
the display down will move one contact down
when navigating through a contact list
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Comparison of E-paper & LCD
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Applications
• Electronic shelf labels in Grocery stores- cuts out time it takes for workers to change labels for specials or new items
• No Knob Etch-a-sketches- children draw with electronic ink then erase with the push of a button
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Future of E-paper
Improve hardware that can refresh page quickly
More advanced wireless capabilities
Epaper reader may soon replace the present newspaper and books
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Advantages & Disadvantages
Lower cost in the future
Light weight & flexible
plastic
Wider viewing angles &
improved brightness
Better power efficiency
UV sensitivity
Less Lifetime
Expensive Manufacturing
Susceptible to water
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Smart Phone with a functional flexible electrophoretic display and integrated bend sensors
Small, Compatible and Low power consumption
Paper Phone uses the glare-free screen technology & feels a little more like paper
Conclusion
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References
[1] Lahey, Byron, et al. "PaperPhone: understanding the use of bend gestures in mobile devices with flexible electronic paper displays", Proceedings of the SIGCHI Conference on Human Factors in Computing Systems. ACM, pp. 1303-1312, 2011
[2] Warren, Kristen, et al. "Bending the rules: bend gesture classification for flexible displays." Proceedings of the SIGCHI Conference on Human Factors in Computing Systems. ACM, PP (607-610), 2013
[3] "The Future of Electronic Paper". The Future of
Things. Retrieved 12 February 2013
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ThankYou
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