New electronic paper displays video
Last Updated: Wednesday, September 24, 2003 | 4:48 PM ET
A new generation of electronic paper could bring the movies to a foldable screen near you.
Various companies are developing wafer-thin foldable screens to display static type. A Dutch project takes the technology one step further.
Print image uploaded to plastic film
Scientists at Philips Research in Eindhoven, the Netherlands, have invented a prototype system to display high-definition moving pictures.The images can switch quickly from one colour to the next, according to researchers Robert Hayes and B. J. Feenstra.
The technology, called electrowetting, takes advantage of how oil and water don’t mix. In each pixel in the device, coloured oils can be manipulated quickly and accurately to produce video displays, the researchers say.
The oil spreads over a water-repelling coating on a transparent electrode. When a voltage difference is applied to the paper, the oil moves to reveal a white sheet underneath.
“The reflectivity and contrast of our system approach those of paper,” they wrote in Thursday’s issue of the journal Nature.
“In addition, we demonstrate a colour concept which is intrinsically four times brighter than reflective liquid-crystal displays and twice as bright as other emerging technologies.”
The technology works at low voltage and is light weight and flexible, the researchers say.
Plastic Film Displaying Print & Video