Breakthrough Could Lead to Color E-readers
May 1, 2009 8:23 AM
comment(s) - last by
Individual EFD display pixels, with center pigment reservoir
Display produces colors similar to those in print magazines
Digital readers commercially available in the U.S. today all use black and white screens in their e-paper displays. So far there has not been a color screen reader released in the States which can display pages with the color spectrum of a printed magazine (though there has been
). Some researchers believe that colors screens could be the key to taking e-readers to the mainstream user.
Researchers at the University of Cincinnati (UC) have made a
breakthrough in electrofluidic display technology
(EFD) that could lead to e-readers with true color screens. The breakthrough allows better manipulation of the appearance of pigments via electric switching to produce colors. The result is a better display, with visual brilliance similar to that of printed media.
The research team says that the EFD technology they have developed could potentially provide better than 85% white-state reflectance. The 85% white-state reflectance is said to be the performance level required for consumers to accept reflective display applications.
UC researcher and professor of electrical engineering Jason Heikenfeld said, "If you compare this technology to what’s been developed previously, there’s no comparison. We’re ahead by a wide margin in critical categories such as brightness, color saturation, and video speed."
The pixel structure of the EFD screen created by the researchers has the ability to reveal or hide pigments with high contrast and video quality speeds. A small reservoir in the center if each pixel holds the pigments until it needs to be displayed.
The breakthrough could one day lead to devices like the
Amazon Kindle II
with color screens. Heikenfeld said, "This takes the Amazon Kindle, for example, which is black and white, and could make it full color. So now you could take it from a niche product to a mainstream product."
Another nice feature of the screen developed by the researchers is that the optically active layer can be under 15 microns thick, making rollable displays possible, in turn allowing the EFD to be used in diverse products. The researchers see possible uses for the technology in electronic windows and cases for mobile phones and other electronics that can be color tuned at the user's will.
Heikenfeld continued saying, "The ultimate reflective display would simply place the best colorants used by the printing industry directly beneath the front viewing substrate of a display. In our EFD pixels, we are able to hide or reveal colored pigment in a manner that is optically superior to the techniques used in electrowetting, electrophoretic and electrochromic displays."
The research is being published in a paper "Electrofluidic displays using Young–Laplace transposition of brilliant pigment dispersions" and has been underway for several years. To expedite the commercialization of the technology a new company called Gamma Dynamics has been founded with Heikenfeld as principal scientist. Funding for the research was provided by Sun Chemical, Polymer Vision, the National Science Foundation, and the Air Force Research Laboratory. Research partners with UC included Sun Chemical, Polymer Vision, and Gamma Dynamics.
This article is over a month old, voting and posting comments is disabled
RE: e-readers are pointless
5/2/2009 3:01:38 PM
To me that was harder to look at than my pc screen. If you like it go for it but that gave me eye strain in a few seconds (not because it was in japanese either).
“So far we have not seen a single Android device that does not infringe on our patents." -- Microsoft General Counsel Brad Smith
Japan Gets Fujitsu's New Color eBook Reader, Priced at $1,010 USD
March 18, 2009, 1:23 PM
Update: Amazon to Launch Kindle 2 Today
February 9, 2009, 9:48 AM
Call-capable Samsung Gear S Smartwatch Launches Nov 7 in U.S.
October 30, 2014, 12:45 PM
Lenovo Completes $2.91B Acquisition of Motorola
October 30, 2014, 11:57 AM
Samsung Electronics Q3 Profit Falls by 60%, Mobile Division Sees 74% Profit Decline
October 30, 2014, 10:10 AM
Microsoft's $199 Fitness Band Packs in 10 Sensors, Works with Windows Phone, iOS, and Android
October 30, 2014, 8:58 AM
Google’s Project Ara Modular "LEGO" Smartphone Shown Booting Up on Video
October 29, 2014, 5:28 PM
After Touting Security, Privacy Controls, MCX/CurrentC Hack Exposes Customer Email Addresses
October 29, 2014, 3:08 PM
Most Popular Articles
Amid Theater Boycott Netflix Defiantly Plans New Movies, Plus 3 TV Shows for 2015
October 24, 2014, 7:30 PM
AT&T Defeats Purpose of New Apple SIM, Locks iPad Air 2 SIMs to Its Network
October 24, 2014, 2:17 PM
CVS, Rite Aid Kill Unofficial Apple Pay Support, Burn Google Wallet Users in the Process
October 25, 2014, 5:26 PM
1 Million Credit Card Activated on Apple Pay Within 72 Hours, Walmart CEO Hopes Visa "Suffers"
October 28, 2014, 8:17 AM
Microsoft's Figures Show Desktop Users Flocking to Windows 10 Preview
October 27, 2014, 11:04 AM
Latest Blog Posts
Costco Gives Employees Thanksgiving Off; Wal-Mart Leads "Black Thursday" Charge
Oct 29, 2014, 9:57 PM
"Bear Selfies" Fad Could Turn Deadly, Warn Nevada Wildlife Officials
Oct 28, 2014, 12:00 PM
The Surface Mini That Was Never Released Gets "Hands On" Treatment
Sep 26, 2014, 8:22 AM
ISIS Imposes Ban on Teaching Evolution in Iraq
Sep 17, 2014, 5:22 PM
Space Terrorism is a Looming Threat For the United States
Apr 23, 2014, 7:47 PM
More Blog Posts
Copyright 2014 DailyTech LLC. -
Terms, Conditions & Privacy Information