Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Functional films for the displays of the future

22.05.2013
Frauhofer FEP will present a novel roll-to-roll manufacturing process for high-barriers and functional films for flexible displays at the SID DisplayWeek 2013 in Vancouver – the International showcase for the Display Industry.

Displays that are flexible and paper thin at the same time?! What might still seem like science fiction will be a major topic at the SID Display Week 2013 that currently takes place in Vancouver in Canada.


Flexible OLED from Fraunhofer COMEDD encapsulated on both sides with high barrier films of Fraunhofer POLO.

High manufacturing cost and a short lifetime are still a major obstacle on the path towards commercial breakthrough of large-area and flexible OLED displays, roll-up e-paper and/or flexible luminous wallpaper. One reason for the high cost is the lack of cost-efficient and reliably large-area processes for flexible encapsulation of such devices.

But now, - at the SID Display Week - the Fraunhofer Institute for Electron Beam and Plasma Technology in Dresden presents a cost-effective roll-to-roll process to deposit ultra-high-barrier and display-adapted functional layers, which will make flexible components longer-living, more durable and cost-effective.

High-barrier films increase the lifespans of flexible electronic systems

The main reason why flexible electronics have a limited time of operation (lifetime) is because the active materials inside the devices are very sensitive against degradation from reaction with omnipresent moisture and oxygen. For instance, a flexible electronic system with the hypothetical size of a football field would not be able to tolerate more than a single drop of moisture ingress in one month. Normal polymer films, on the other hand, allow the diffusion of an entire tanker load of water vapour. Scientists at the Fraunhofer FEP are developing vacuum processes that will be able to productively enhance large polymer films with so-called high-barrier layers that eventually provide sufficient protection of flexible electronics against moisture.
In his presentation on 22 May 2013 (Session 29: Flexible Barriers and Substrate, 10:40 am), Dr. John Fahlteich, Senior Scientist at Fraunhofer FEP, will introduce a high-barrier coating with extremely low water vapour- and oxygen-permeability. With the help of a multi-layer system made from ORMOCER® hybrid-polymer and sputtered zinc-tin-oxide (ZTO) or aluminium oxide (Al2O3) layers water-vapour permeabilities of less than 8 x 10-5 g / (m2d) can be achieved at room temperature. The layer system, which was developed in cooperation with the Fraunhofer ISC in Würzburg (ORMOCER® development) and Fraunhofer IVV in Freising (ORMOCER® application), is currently one of the systems produced in a roll-to-roll process with the lowest water-vapor permeability properties in the world.

Low-cost roll-to-roll processes on a pilot scale

Dr. Fahlteich adds: „Low water-vapour permeation is one thing. But what is also special is the fact that we have been able to use roll-to-roll processes to apply the layers in a highly productive and favourable manner. Films of 400 millimetres width and up to 500 metres in length with reproducibly low water vapor permeation rates have already been coated on a pilot scale. The process is ready for up-scaling to industrial production.“ In addition to the applications for large, flexible displays, flexible lighting and flexible e-paper, the barrier layers may also be employed on organic transistors and organic solar cells.
Dr. Fahlteich’s presentation will finally demonstrate the application-specific enhancements of the technology by integration of multiple functionalities such as adaptation of the product‘s optical properties or addition of transparent electrodes to the high-barrier film.

Press contact: Annett Arnold
Fraunhofer-Institut für Elektronenstrahl- und Plasmatechnik FEP | Phone +49 351 2586 452 | Annett.Arnold@fep.fraunhofer.de

Winterbergstraße 28 | 01277 Dresden | Gemany |

Annett Arnold | Fraunhofer-Institut
Further information:
http://www.fep.fraunhofer.de
http://www.fep.fraunhofer.de/en/events/sid-2013.html

More articles from Trade Fair News:

nachricht BAM@Hannover Messe: innovative 3D printing method for space flight
24.04.2018 | Bundesanstalt für Materialforschung und -prüfung (BAM)

nachricht Clean and Efficient – Fraunhofer ISE Presents Hydrogen Technologies at the HANNOVER MESSE 2018
23.04.2018 | Fraunhofer-Institut für Solare Energiesysteme ISE

All articles from Trade Fair News >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Why we need erasable MRI scans

New technology could allow an MRI contrast agent to 'blink off,' helping doctors diagnose disease

Magnetic resonance imaging, or MRI, is a widely used medical tool for taking pictures of the insides of our body. One way to make MRI scans easier to read is...

Im Focus: BAM@Hannover Messe: innovative 3D printing method for space flight

At the Hannover Messe 2018, the Bundesanstalt für Materialforschung und-prüfung (BAM) will show how, in the future, astronauts could produce their own tools or spare parts in zero gravity using 3D printing. This will reduce, weight and transport costs for space missions. Visitors can experience the innovative additive manufacturing process live at the fair.

Powder-based additive manufacturing in zero gravity is the name of the project in which a component is produced by applying metallic powder layers and then...

Im Focus: Molecules Brilliantly Illuminated

Physicists at the Laboratory for Attosecond Physics, which is jointly run by Ludwig-Maximilians-Universität and the Max Planck Institute of Quantum Optics, have developed a high-power laser system that generates ultrashort pulses of light covering a large share of the mid-infrared spectrum. The researchers envisage a wide range of applications for the technology – in the early diagnosis of cancer, for instance.

Molecules are the building blocks of life. Like all other organisms, we are made of them. They control our biorhythm, and they can also reflect our state of...

Im Focus: Spider silk key to new bone-fixing composite

University of Connecticut researchers have created a biodegradable composite made of silk fibers that can be used to repair broken load-bearing bones without the complications sometimes presented by other materials.

Repairing major load-bearing bones such as those in the leg can be a long and uncomfortable process.

Im Focus: Writing and deleting magnets with lasers

Study published in the journal ACS Applied Materials & Interfaces is the outcome of an international effort that included teams from Dresden and Berlin in Germany, and the US.

Scientists at the Helmholtz-Zentrum Dresden-Rossendorf (HZDR) together with colleagues from the Helmholtz-Zentrum Berlin (HZB) and the University of Virginia...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

Invitation to the upcoming "Current Topics in Bioinformatics: Big Data in Genomics and Medicine"

13.04.2018 | Event News

Unique scope of UV LED technologies and applications presented in Berlin: ICULTA-2018

12.04.2018 | Event News

IWOLIA: A conference bringing together German Industrie 4.0 and French Industrie du Futur

09.04.2018 | Event News

 
Latest News

World's smallest optical implantable biodevice

26.04.2018 | Power and Electrical Engineering

Molecular evolution: How the building blocks of life may form in space

26.04.2018 | Life Sciences

First Li-Fi-product with technology from Fraunhofer HHI launched in Japan

26.04.2018 | Power and Electrical Engineering

VideoLinks
Science & Research
Overview of more VideoLinks >>>