Fundings & Projects | Mar 17, 2015

Fraunhofer FEP Presented Transparent Color Tunable OLED

The project LOIGB (LED and OLED integration into glass and plastic composites for the use in lighting systems for railway and further applications) has been successfully completed. The results were presented at LOPEC 2015 (March 4th – 5th, 2015, Munich, hall B0, booth 230).

The objective of the joint project was the development and integration of large-area color variable OLED modules, whereby the light colors red, green and blue (RGB), which are required for the achievement of white mixed light, can be controlled separately. Thus it is possible to generate any desired color, including white, with one and the same OLED module. The realization of large-area 3-color-variable OLED modules could be demonstrated in the project.

The OLED modules have a diameter of 55 mm with an active light area of 42 mm. They were encapsulated with a full thin film, which enables the lamination of OLED modules in glass composites.

For the first time worldwide a transparent 2-color variable OLED, which can show a color gradient from blue to white to yellow, was demonstrated. This exhibit was presented to the visitors of LOPEC 2015 at the Fraunhofer FEP booth. A possible field of application could be its use as the light source in a laminated glass sheet which serves as baggage compartment in trains. The company SBF Spezialleuchten GmbH, the coordinator of the project, is working on such solutions.

“The possibilities for application of the results, which are achieved within the project, are extraordinarily versatile”, says project manager Jan Hesse. “In addition to the use in general lighting, e.g. in windows, wall elements or wallpapers, the color variable OLEDs are as well suitable for the interior vehicle lighting – especially for the ambient or accent lighting – in the automotive and rail vehicle industry.”

Besides, the aviation industry shows great interest in using this technology for ambient lighting within an aircraft cabin.

The results which were achieved in the project LOIGB provide a basis for further activities at Fraunhofer FEP. Currently, the scientists are working on the process development in order to achieve higher yield and reduce manufacturing costs as well as to realize the process transfer to a roll-to-roll system for flexible OLED. Moreover, the intuitive control of such lighting elements will become a priority. Compared to conventional light sources (on / off), the complex functionality (dimmability, color variation and dynamization through segments) requires new intuitive control possibilities. A simple control is absolutely necessary in order to achieve market acceptance for that innovative lighting technology.

The project was funded by the European Union and the Free State of Saxony (Funding reference: 100133280).

About Fraunhofer FEP:
We are one of 67 institutes of the Fraunhofer-Gesellschaft, Europe's largest applied research organization. The Fraunhofer Institute for Organic Electronics, Electron Beam and Plasma Technology FEP is located in Dresden and focuses on developing technologies and processes for surface modification.
Our core technologies are sputtering technology, plasma-activated high-rate deposition, high-rate PECVD, and electron beam technology, which we use to develop surface technology solutions for various industrial tasks.
The deposition of individual layers and multilayer systems and the processing of surfaces are of huge practical importance for many industries. Regardless of whether for machine building, the utilization of solar energy, the packaging industry, biomedical engineering, optics, sensor technology, or electronics: We develop suitable processes and technologies and the associated technological key components.
Feasibility studies, to evaluate surface coating and processing, and pilot production, to facilitate the introduction of new customer products to the marketplace, are also included in our range of services.
The scaling up of technologies to industrial quantities and integration into suitable plant technology and into existing production processes are key services of the Fraunhofer FEP. The cost efficiency of a technology for industrial production is always taken into account.
Our comprehensive know-how allows us to support the research and development work of our customers from the concept phase right through to industrial realization.

FEATURED

Epoxy Features Very Low Coefficient of Thermal Expansion

Epoxy Features Very Low Coefficient of Thermal Expansion Master Bond EP30LTE-2 has been developed for joining dissimilar substrates exposed to thermally or mechanically induced stresses. It can be used for sealing, coating and encapsulating, especially for small to medium sized castings where a very low coefficient of thermal expansion (CTE) is required. Read more »

FEATURED

New BJB LED Connector for Linear LED Modules: Book 21 Compliant

New BJB LED Connector for Linear LED Modules: Book 21 Compliant Lampholders were standard in older, traditional lighting systems. Modern LED fixtures that utilize non-replaceable LEDs create several assembly and field-replacement disadvantages. Zhaga Book 21 addresses these shortcomings by standardizing linear 'socketable' LED modules. In accordance with Book ... Read more »

FEATURED

EzyLED™ Now Stocked at Digi-Key

EzyLED™ Now Stocked at Digi-Key American Bright, a global LED lighting solutions manufacturer, announced a series of EzyLED 3030. American Bright's EzyLED™ is a proprietary LED device with a built-in IC. This patented design drastically reduces the need for additional circuitry and other on-board components making it the ideal ... Read more »

FEATURED

Cree Expands Design Possibilities for Architectural Lighting with the Worldwide Proven CLQ6A LED

Cree Expands Design Possibilities for Architectural Lighting with the Worldwide Proven CLQ6A LED These SMD LEDs are packaged in an industry standard PLCC8 package. These high performance 4 color SMT LEDs are designed to work in a wide range of applications. A wide viewing angle and high brightness make these LEDs suitable for signage applications. Read more »

FEATURED

Measuring the Oxygen Content of Blood with LEDs

Measuring the Oxygen Content of Blood with LEDs Pulse oximetry is a non-invasive method for determining haemoglobin (Hb) saturation through oxygen in the blood and heart frequency. It uses the fact that oxygen-rich and oxygen-poor haemoglobin absorb red and infrared light differently. In order to measure the oxygen content reliably, LEDs with ... Read more »

EDITORIAL

LpS/TiL 2019 - Europe's Foremost Lighting Conference Discussed Latest Lighting Trends

LpS/TiL 2019 - Europe's Foremost Lighting Conference Discussed Latest Lighting Trends Last week saw the co-hosted LED professional Symposium +Expo (LpS), Trends in Lighting Forum &Show (TiL) and for the first time the Digital Addressable Lighting Interface (DALI) Summit return to Bregenz, Austria. The three international conference and exhibition events were carefully curated to ... Read more »

EDITORIAL

The 2019 LpS & TiL Award Winners: Celebrating the Complete Spectrum of Light

The 2019 LpS & TiL Award Winners: Celebrating the Complete Spectrum of Light It is a great pleasure for the LpS and TiL organization committee to announce the award winners for 2019. For the second time in a row, after the traditional cruise on the lake from Bregenz to Lindau, the gala dinner at the Eilgut Halle has proven to being a great place for the LpS & TiL award ... Read more »

page_peel