dimensional OLED rear lights - the workgroup of Prof. Klaus Meerholz

OLEDs conquer the third dimension: First car with threedimensional
OLED rear lights
• Audi, Philips, Automotive Lighting, Merck and the University of Cologne
announce the successful conclusion of the "OLED 3D" project promoted by
German Federal Ministry of Education and Research (BMBF).
July 11, 2013 - The members of the OLED 3D research consortium today presented the
results of their project, which had received around € 5.7 million in funding from the German
Federal Ministry of Education and Research (BMBF). The consortium led by Philips (Aachen)
also consisted of Audi (Ingolstadt), Automotive Lighting (Reutlingen), Merck (Darmstadt), and
the University of Cologne. After three and a half years, the partners succeeded in producing
for the very first time large-area, three-dimensional organic light-emitting diodes (OLEDs)
and using them in the rear lighting of an automobile. This world premiere demonstrates the
strong extent to which this new lighting technology will change the appearance of
automobiles in the future.
The partners aimed to analyze and to improve the technology and the subsequent
application of 3D OLEDs in automotive applications throughout the entire supply chain.
Together with the Technical University of Darmstadt, Merck developed new, crosslinkable
red OLED materials. Thanks to these materials, OLEDs can be produced for the first time in
multiple layers on formed glass using wet chemistry. The University of Cologne conducted
intensive research on this manufacturing process and demonstrated it on 3D samples.
The quality of the OLED substances significantly impacts the lifetime and performance of
OLED applications. The sensitivity and precision of analytical chemistry as well as expertise
in producing ultrapure materials are thus indispensable preconditions for the successful
application of this technology. Therefore, the project also involved intensive work on the
purity of the materials used and their chemical characterization.
The 3D OLEDs used in the rear lights of the Audi TT were produced by Philips. For this
purpose, the OLED manufacturing process, which was previously based on 2D glass
substrates, had to be adapted to the third dimension. This related not only to the processes
and technologies for manufacturing the glass substrates themselves, but also to vacuumbased
OLED coating, encapsulation and electrical contacting.

Automotive Lighting developed, realized and tested 3D-supported concepts for the
application, mounting and control of large-area, curved OLED components in rear lights. Audi
developed an OLED-specific design and integrated the rear lighting into an Audi TT.
The design draft impressively shows the multifaceted possibilities that OLEDs offer in
external vehicle lighting. The result creates entirely new pioneering design possibilities for
innovative OLED lighting applications in automotive engineering. For example, the OLED-3D
consortium has further developed the characteristic rear light design of the Audi TT. Using
these ultra-thin, large-area light sources, it has entered the third dimension of space and a
totally new dimension of design.

About Royal Philips
Royal Philips (NYSE: PHG, AEX: PHIA) is a diversified health and well-being company, focused on improving
people’s lives through meaningful innovation in the areas of Healthcare, Consumer Lifestyle and Lighting.
Headquartered in the Netherlands, Philips posted 2012 sales of EUR 24.8 billion and employs approximately
116,000 employees with sales and services in more than 100 countries. The company is a leader in cardiac care,
acute care and home healthcare, energy efficient lighting solutions and new lighting applications, as well as male
shaving and grooming and oral healthcare. News from Philips is located at www.philips.com/newscenter.
About AUDI AG
In 2012, the Audi Group delivered 1,455,123 cars of the Audi brand to its customers, generated revenue of €48.8
billion and achieved an operating profit of €5.4 billion. The Audi Group is globally present in more than 100
markets and produces vehicles in Ingolstadt and Neckarsulm (Germany), Győr (Hungary), Brussels (Belgium),
Bratislava (Slovakia), Martorell (Spain), Kaluga (Russia), Aurangabad (India), Changchun (China) and Jakarta
(Indonesia). The brand with four rings will produce cars also in Foshan (China) as of late 2013 and in San José
Chiapa (Mexico) starting in 2016. AUDI AG’s wholly owned subsidiaries include quattro GmbH (Neckarsulm),
Automobili Lamborghini S.p.A. (Sant’Agata Bolognese, Italy) and the sports motorcycle manufacturer Ducati
Motor Holding S.p.A. (Bologna, Italy). The Group currently employs more than 70,000 people worldwide, including
around 50,000 in Germany. Total investment of approximately €11 billion is planned by 2015 – mainly in new
products and sustainable technologies. Audi lives up to its corporate responsibility and has strategically
established the principle of sustainability for its products and processes. The long-term goal is CO2-neutral
mobility.
www.audi.de
About Automotive Lighting Reutlingen GmbH
Automotive Lighting Reutlingen GmbH is one of the international market leaders in exterior automotive lighting.
With over 15,000 employees worldwide, we achieve annual turnover of more than EUR 2 billion.
Our innovative lighting systems provide a valuable contribution to making driving safer for all road users - by day
and by night. We supply to auto manufacturers worldwide, working with them from initial contact to market launch
of the finished vehicle.
Both our headlight and taillight product ranges combine attractive designs and top technical performance. From
halogen to xenon to full-LED headlights, and from simple to very high-quality taillights, Automotive Lighting offers
the right solution for every automotive manufacturer. Because in the end, exterior automotive lighting is a key part
of a car’s overall appearance.
www.al-lighting.com
About Merck
Merck is a leading pharmaceutical, chemical and life science company with total revenues of € 11.2 billion in
2012, a history that began in 1668, and a future shaped by approximately 38,000 employees in 66 countries. Its
success is characterized by innovations from entrepreneurial employees. Merck’s operating activities come under
the umbrella of Merck KGaA, in which the Merck family holds an approximately 70% interest and shareholders
own the remaining approximately 30%. In 1917, the former U.S. subsidiary Merck & Co. was expropriated and
has been an independent company ever since.
www.merckgroup.com
About the University of Cologne
The University of Cologne has been involved in the field of organic electronics for years. The workgroup headed
by Professor Klaus Meerholz enjoys a high reputation on an international level, for example for its work on crosslinkable
organic semiconductors for the implementation of solution-processed multilayer stacks and on
lithographic structures (e.g. RGB pixels). The group also does leading work in the area of highly efficient polymer
OLEDs. The Meerholz workgroup has participated in several German Federal Ministry of Education and Research
(BMBF) and EU projects in the past and continues to participate in such projects today, and in 2008 was awarded
the BMBF innovation platform “Solution-Processed Organic Electronics”. In 2010, Professor Meerholz received
the Innovation Award of the German federal state of North Rhine-Westphalia. In 2012 he became chairman of the
board of COPT.NRW e.V. (Center for Organic Production Technologies in North Rhine-Westphalia).
www.meerholz.uni-koeln.de