Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:


Glass-on-glass lamination for large-area OLEDs right from the roll


The Fraunhofer Institute for Organic Electronics, Electron Beam and Plasma Technology FEP will be presenting flexible organic light-emitting diodes (OLEDs) at AIMCAL 2016 in Dresden, Germany, from May 30th to June 2nd, 2016. These OLEDs have been fabricated on ultra-thin glass and encapsulated with a ultra-thin glass foil in the same process.

Organic light-emitting diodes have already found acceptance as a light source in first luminaires on the market on rigid glass. However, far larger shares of the market could be acquired, if flexible large-area OLEDs could be manufactured cost-effectively with consistent quality.

Glass-on-glass laminated OLED made using the Fraunhofer FEP roll-to-roll OLED process line

© Fraunhofer FEP

Scientists are working feverishly on this worldwide. Large-area OLEDs could be employed not only in innovative furniture designs, but also deliver good service in other sectors requiring specialized curved design, such as architectural lighting and automotive, for example.

The organic layers of the OLED are sensitive to oxygen and moisture and needs to be well protected. Flexible ultra-thin glass meets the stringent requirements of a hermetic barrier, free of defects and pinhole freedom for large OLED emissive surfaces.

Fraunhofer FEP has had success not only in applying OLEDs to flexible ultra-thin glass, but also in encapsulating the devices using an additional thin glass layer in a single roll-to-roll manufacturing step. A high-performance adhesive was applied over the entire surface of the encapsulating glass in advance in collaboration with tesa SE.

This adhesive glass film is subsequently laminated to the OLED-coated ultra-thin glass. Fraunhofer FEP will be presenting this type of OLED at AIMCAL 2016, in this case based on G-Leaf™ ultra-thin glass by Nippon Electric Glass Co Ltd. (NEG). A 10 cm × 25 cm emissive surfaces will be on display.

“But encapsulation is not the only challenge for flexible large area OLEDs that need to remain stable over long periods. In order to get them to emit, a highly conductive, transparent oxide layer with good light coupling properties is required and reliable electrical contacts to the emitting layers with low contact resistance is essential," explains Dr. Stefan Mogck, Head of Roll-to-Roll Organic Technology at Fraunhofer FEP. “We are proud of having optimized our process, and that these layers can be applied very homogenously to the flexible glass.”

Making dependable electrical connections to the ultra-thin glass without damaging it was especially challenging. The scientists will be working with customers in the future on non-destructive techniques of integration.

Fraunhofer FEP offers its industrial partners process and product development over the complete value chain customized to their requirements. Processes for treatment and coating flexible glass for customer-specific emissive surfaces in different sizes and colors can be developed, and even flexible OLED prototypes fabricated at customers’ requests. In addition, the Institute can develop matching driver circuitry for supplying power to the prototypes.

Fraunhofer FEP at AIMCAL 2016
Monday, May 30
Session: Coating and Laminating Short Course
13:30 – 17:00, Location: Bellevue I
Oliver Miesbauer, Fraunhofer IVV / Dr. rer. nat. John Fahlteich, Fraunhofer FEP

Tuesday, May 31
Track: Web Coating and Web Handling,
Session: Web Surface / Barrier
14:30 – 15:00, Location: Bellevue I
Surface modification of polyethylene terephthalate (PET) and oxide coated PET for adhesion improvement
Juliane Fichtner, Fraunhofer FEP

Track: Vacuum
Session: Sputtering, Coating Equipment, Inline control
16:00 – 16:30, Location: Bellevue II
Adapted particle bombardment during layer growth by pulse magnetron sputtering
Dr. rer. nat. Daniel Glöß, Fraunhofer FEP

Wednesday, June 1
Track: Vacuum
Session: Pretreatment, Substrate Film, Simulation
10:30 – 11:00, Location: Bellevue II
Vacuum plasma treatment and coating of fluoropolymer webs – challenges and applications
M.Eng. Cindy Steiner, Fraunhofer FEP

Thursday, June 2
Track: Vacuum
Session: New Applications, Emerging Technologies, Capacitors, Photovoltaic
8:30 – 9:00, Location: Bellevue II
New vacuum coating technologies for metal strips and foils
Prof. Dr. rer. nat. Christoph Metzner, Fraunhofer FEP

10:30 – 11:00, Location: Bellevue II
Present status of Roll-to-Roll Fabrication for OLED lighting
Michael Stanel, Fraunhofer FEP

Fraunhofer FEP
June 1, 2016
Fraunhofer FEP invites you to an exciting tour to our labs: applied R&D for the industry at its best. During the tour, we will present pilot scale experimental coating equipment, e.g. MAXI (in-line vacuum coating for metal strips and sheets), coFlex® 600 (roll-to-roll pilot sputter roll coater), novoFlex® 600 (roll-to-roll pilot coater), atmoFlex (non-vacuum roll to roll coating and electron beam surface treatment) and a roll-to-roll process line for the deposition of OLED.

Press contact:
Annett Arnold
Fraunhofer Institute for Organic Electronics, Electron Beam and Plasma Technology FEP | Phone +49 351 2586 452 |
Winterbergstraße 28 | 01277 Dresden | Germany |

Weitere Informationen:

Annett Arnold | Fraunhofer-Institut für Organische Elektronik, Elektronenstrahl- und Plasmatechnik FEP

Further reports about: Elektronik Fraunhofer-Institut OLED PET Plasmatechnik coating

More articles from Power and Electrical Engineering:

nachricht Greater Range and Longer Lifetime
26.10.2016 | Technologie Lizenz-Büro (TLB) der Baden-Württembergischen Hochschulen GmbH

nachricht 3-D-printed magnets
26.10.2016 | Vienna University of Technology

All articles from Power and Electrical Engineering >>>

The most recent press releases about innovation >>>

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

Im Focus: Etching Microstructures with Lasers

Ultrafast lasers have introduced new possibilities in engraving ultrafine structures, and scientists are now also investigating how to use them to etch microstructures into thin glass. There are possible applications in analytics (lab on a chip) and especially in electronics and the consumer sector, where great interest has been shown.

This new method was born of a surprising phenomenon: irradiating glass in a particular way with an ultrafast laser has the effect of making the glass up to a...

Im Focus: Light-driven atomic rotations excite magnetic waves

Terahertz excitation of selected crystal vibrations leads to an effective magnetic field that drives coherent spin motion

Controlling functional properties by light is one of the grand goals in modern condensed matter physics and materials science. A new study now demonstrates how...

Im Focus: New 3-D wiring technique brings scalable quantum computers closer to reality

Researchers from the Institute for Quantum Computing (IQC) at the University of Waterloo led the development of a new extensible wiring technique capable of controlling superconducting quantum bits, representing a significant step towards to the realization of a scalable quantum computer.

"The quantum socket is a wiring method that uses three-dimensional wires based on spring-loaded pins to address individual qubits," said Jeremy Béjanin, a PhD...

Im Focus: Scientists develop a semiconductor nanocomposite material that moves in response to light

In a paper in Scientific Reports, a research team at Worcester Polytechnic Institute describes a novel light-activated phenomenon that could become the basis for applications as diverse as microscopic robotic grippers and more efficient solar cells.

A research team at Worcester Polytechnic Institute (WPI) has developed a revolutionary, light-activated semiconductor nanocomposite material that can be used...

Im Focus: Diamonds aren't forever: Sandia, Harvard team create first quantum computer bridge

By forcefully embedding two silicon atoms in a diamond matrix, Sandia researchers have demonstrated for the first time on a single chip all the components needed to create a quantum bridge to link quantum computers together.

"People have already built small quantum computers," says Sandia researcher Ryan Camacho. "Maybe the first useful one won't be a single giant quantum computer...

All Focus news of the innovation-report >>>



Event News

#IC2S2: When Social Science meets Computer Science - GESIS will host the IC2S2 conference 2017

14.10.2016 | Event News

Agricultural Trade Developments and Potentials in Central Asia and the South Caucasus

14.10.2016 | Event News

World Health Summit – Day Three: A Call to Action

12.10.2016 | Event News

Latest News

Greater Range and Longer Lifetime

26.10.2016 | Power and Electrical Engineering

VDI presents International Bionic Award of the Schauenburg Foundation

26.10.2016 | Awards Funding

3-D-printed magnets

26.10.2016 | Power and Electrical Engineering

More VideoLinks >>>