E-paper is a display technology that looks like real paper but can be rewritten electronically. It was invented in the 1970s at Xerox PARC and uses microcapsules containing charged white and black particles to display text and images in a low-power, reflective manner. Major companies developing e-paper include E Ink, LG, and Samsung. It has applications in e-books, electronic newspapers, and foldable displays due to advantages like a paper-like appearance and low power consumption.

2.  1.What is e paper?
 2.What is history of e paper?
 3.What component in e paper?
 4.How it works?
 5. Which company providing this
technology?
 6.Advantage ?
 7 .Disadvantages?

3.  A portable, reusable storage medium.
photos
videos
texts
 Common appearance to paper.

4.  E-paper(also know as electronic paper)
can be described as an easily
transportable electronic display device that
looks like real paper, but can rewritten
electronically millions of times.
 Its a display technology that will allow
readers to read as if it was real paper with
ink on it, while being extremely light and
flexible (epapercentral). Here is a picture
that can help anyone visualize what e-
paper looks like.

6.  Application such as:
 e-books
 electronic newspaper
 foldable display
 fashion

7.  In the 1970s, Xerox Palo Alto Research Center (Xerox
PARC) was a powerhouse of innovation. Many
aspects the modern computer, namely the
mouse, laser printer, Ethernet, GUI, computer-
generated color graphics, as well as a number of
important computer languages, were invented at
PARC around that time.
 Yet another development, nearly lost among those
important breakthroughs, was invented in 1974 by
PARC employee Nicholas K. Sheridon. The Gyricon, a
Greek term for rotating image, was to be new display
technology for the Alto personal computer;
eventually, it became the basis for modern e-paper
technology..

9.  It includes two parts:
 1.E-ink(front plane)
 2.To generate text and images(black
plane)

10.  Electronic ink is made up of millions of tiny
microcapsules, about the diameter of a human
hair. Each microcapsule contains positively
charged white particles and negatively charged
black particles suspended in a clear fluid. When a
positive or negative electric field is
applied, corresponding particles move to the top
of the microcapsule where they become visible to
the user. This makes the surface appear white or
black at that spot.

12.  Bistable means that the image on an E Ink screen will be retained
even when all power sources are removed.
 In practice, this means that the display is consuming power only when
something is changing.
 For example, when reading on an eReader, power is only needed when
turning to a new page but no power is consumed by the display while
reading the page. This is most noticeable when an eReader goes into
sleep mode yet there is still an image being displayed.
 By contrast, with a traditional LCD, the display is needs to be
refreshed around 30X per second, regardless of the whether anything
new is being displayed.
 Bistability significantly reduces the power consumption of displays
using E Ink and is a key reason eReaders have such long battery life.

13.  E Ink displays are also referred to as
"reflective displays." In an LCD, or
"emissive display", light from a backlight is
projected through the display towards
your eyes. In an E Ink display, no
backlight is used; rather, ambient light
from the environment is reflected from
the surface of the display back to your
eyes

14.  Gyricon contains a lots of small spherical beads, sandwiched in
between two thin transparent plastic sheet.
 Each bead is bichromal, meaning it contains two opposite
colors (e.g., black and white) on each side of the sphere. These
beads are imbedded in cavities filled with oil that allows these
beads to rotate freely. Each side of the bead has its own
electrical charge (positive or negative).
 These beads are rotated by exposure to an electrical charge;
they rotate fully to display as black or white, or partially (in
response to lower electrical charges), to display a range of grey
shades.
 Images are created by the beads with distributed orientation, and
are bi-stable: they remain fixed in position until another
electrical charge is applied to change the orientation of the
beads.

15.  Delta Electronics
 LG
 NEC
 Plastic Logic
 E Ink Holdings, flexible EPLaR
 Samsung
 Seiko Epson

16.  Irex
 Sony
 Philips
 Ink crops

17.  It is bileved that it will eventually Replace
newspaper and books in the library.
 E paper may soon replace the use of
LCD screen in many apps.
• Cell phones
• Laptops
• Mp3 players
• PDA

18.  Low power use:
 Battery life of several month on small
battery.
 Cheap to manufacture.
 Applicable to replace existing monitors
and LCD screen.
 Portability
 Thinness and weight

19.  Un recyclable
 Has novelty feel right now
 May have difficulty for accepting
consumers and business.
 May have trouble to justify the price of e-
book
versus traditional LCD screen version of
unit.