Peter Dinham
Tuesday, 14 July 2009 07:20
IT Industry -
Market
Page 3 of 3
Chae says that Gartner believes that the cost of e-paper
displays will need to fall further if it is to act as a viable
mainstream alternative to print media, “especially as the falling costs
and increasing quality of alternative technologies – such as OLED and
LCD – could moderate the growth potential of e-paper.”
Gartner cites a number of examples of e-paper technologies - and explains the way they work - including:
• Electrophoretic e-paper, where the image is generated by an array
of electrically charged particles suspended in fluid. When current is
applied, the particles are moved to the opposite electrode side. Switch
the field, and the particles will move to the other side, and this
will change the colour and finally change the images. Electrophoretic
technology from E Ink is currently used in commercial devices such as
the Amazon Kindle, Sony Librie reader and Plastic Logic's e-newspaper
• Electronic Liquid Powder (ELP) from Bridgestone, which uses a
similar electrophoretic approach to E Ink's e-paper, but with the ELP
particles suspended in air instead of fluid.
• Cholesteric LCD, an LCD variant, such as the technology from Kent
Displays that is used in Fujitsu’s new e-book reader FLEPia, using
multiple layers of different colour LCD crystals to generate the image.