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
5/1/2009 11:49:27 AM
The price of the Kindle is pretty high, but when you realize that it comes with a "Lifetime" 3G data account, the price suddenly looks pretty good.
RE: e-readers are pointless
5/1/2009 4:40:20 PM
It all boils down to home much reading you do. I'd say if you only read 15 or fewer books a year, then it's not worth the entry price. Print copies outside of Amazon regularly go on sale and aren't much more than the e-books. Plus there's always libraries and used book shops. Even when I was in university, I'd rarely spend more than $400 a year on books. Besides, even with the lifetime 3G service, it only allows you to download books from Amazon. Most people buying it probably already have access to a Wifi hotspot. It's definitely not for everyone.
The Kindle isn't even available outside the US yet so I have to stick the the previous generation's tech, but hey, it does have infinite battery life.
RE: e-readers are pointless
5/2/2009 2:55:08 PM
LOL I dont think I've read 15 books since college!
"And boy have we patented it!" -- Steve Jobs, Macworld 2007
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
Report: Microsoft’s Lumia 530 to Hit T-Mobile This Month for $69 Off-contract
October 1, 2014, 9:10 AM
Quick Note: Pebble, Pebble Steel Smartwatches Reduced to $99, $199 Respectively
September 30, 2014, 3:59 PM
Report: Microsoft Lumia 830 Headed to AT&T on November 7
September 30, 2014, 12:51 PM
Update: Samsung Responds to Reports of Screen Gaps on Galaxy Note 4
September 30, 2014, 11:02 AM
Apple to Begin iPhone 6, iPhone 6 Plus Sales in China October 17
September 30, 2014, 9:55 AM
eBay to Spin Off PayPal Business Next Year
September 30, 2014, 7:28 AM
Most Popular Articles
New AT&T Mobile Share Value "Double Data" Promotion Lasts Through October
September 28, 2014, 8:32 AM
Update: Apple Releases iOS 8.0.2 Update to Make Up for Botched 8.0.1 Release
September 25, 2014, 8:19 PM
Appalling Negligence: Decade-Old Windows XPe Holes Led to Home Depot Hack
September 8, 2014, 8:58 PM
TiVo Mega Features 24TB of Storage, Can Record Three Years* Worth of TV Content
September 8, 2014, 8:45 AM
FBI Outraged That Apple, Google are Adopting Digital "Locks" to Protect Users
September 26, 2014, 1:00 PM
Latest Blog Posts
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
Facebook Aims to Provide Internet to "Every Person in the World" with Drones, Satellites
Apr 1, 2014, 10:20 AM
Retail Mobile Sites Experience Outages in Light of Simplexity's Bankruptcy
Mar 14, 2014, 8:48 AM
More Blog Posts
Copyright 2014 DailyTech LLC. -
Terms, Conditions & Privacy Information