Electrowetting display fabricated on paper could someday be throwaway item

Cincinnati, OH--Paper can be used as the substrate for electrowetting (EW) displays, as demonstrated by University of Cincinnati researchers Andrew Steckl and Duk Young Kim.1 The demo opens up the possibility of low-cost, flexible video-rate "e-paper" that could even be inexpensive enough for single-use throwaway applications.

The displays of e-readers such as the electrophoretic-based Kindle (and the liquid-crystal-based iPad, if you consider the iPad an e-reader) rely on complex circuitry fabricated on a rigid glass substrate. In EW, an electric field is applied to opaque droplets within a display to switch pixels on and off; conventional EW technology is also fabricated on relatively rigid substrates. But inexpensive paper as an EW substrate, combined with mass-production, could launch entirely new applications (lottery tickets with built-in video displays, anyone)?

The researchers found that the performance of their electrowetting device on paper is equivalent to that of glass, which is the gold standard in the field. The devices had low hysteresis (2%) and fast 20 ms switching times.

"It is pretty exciting," said Steckl. "With the right paper, the right process and the right device fabrication technique, you can get results that are as good as you would get on glass, and our results are good enough for a video-style e-reader."

Steckl imagines a future device that is rollable and feels like paper yet delivers books, news, and even high-resolution color video in bright-light conditions.

Steckl's goal is attract commercial interest in the technology for next-stage development, which he expects will take three to five years to get to market.


REFERENCE:

1. Duk Young Kim and Andrew J. Steckl, Applied Materials & Interfaces, Article ASAP, DOI: 10.1021/am100757g.
 

 

Posted by John Wallace

Follow us on Twitter

Subscribe now to Laser Focus World magazine; it’s free!

 

Most Popular Articles

Webcasts

Opportunities in the Mid-IR

The technology for exploiting the mid-IR is developing rapidly:  it includes quantum-cascade lasers and other sources, spectroscopic instruments of many...

Fiber Optic Sensors – Fundamentals, Principles and Applications

In this webcast, sponsored by Nufern, we focus on optical fiber sensing technology.  Fundamental concepts will be presented first, followed by the under...

Infinite Possibilities – Easily Combining Scanner and Servo Motion

High precision motion control applications such as laser micromachining, 2-photon polymerization, glass panel and film patterning, and additive manufacturing...

Solutions in Search of Problems: What Spectroscopy Can Do for You

Spectroscopy is so pervasive that most of us take it for granted. We use it for routine laboratory and test measurements without appreciating how those same ...

Technical Digests

HIGH-ENERGY LASER COATINGS: Eliminating laser damage proactively

High-power and high-energy thin-film antireflection coatings for laser optics require careful des...
Sponsored by

LIBS -- spectroscopy for remote identification of materials

Laser-induced-breakdown spectroscopy (LIBS) uses a pulsed laser to vaporize a small sample of a s...
Sponsored by

Laser Tools for Materials Processing

Laser materials processing requires not only the appropriate industrial laser system, but also a ...
Sponsored by

Click here to have your products listed in the Laser Focus World Buyers Guide.

RELATED PRODUCTS

Phantom ir300

The Phantom ir300 provides extended spectral response beyond visible light spectrum up ...

Miro Airborne

Miro Airborne is a high-speed camera designed for airborne applications.

Phantom Miro Family

The Phantom Miro family are small, lightweight digital high-speed cameras.

RELATED COMPANIES

Photonics Bretagne

Offers a cluster composed of research centers, schools and companies all in the field o...

Raw Communications

Provider of marketing services in the fiber optic data communications industry includin...

XiO Photonics B V

Offers strong competence in integrated optical products for visible light applications....

Social Activity

  •  
  •  
  •  
  •  
  •  
Copyright © 2007-2014. PennWell Corporation, Tulsa, OK. All Rights Reserved.PRIVACY POLICY | TERMS AND CONDITIONS