RELEASE DATE: 3RD FEBRUARY 2004
SUMITOMO CHEMICAL AND CAMBRIDGE DISPLAY TECHNOLOGYCOMMIT TO DEVELOPMENT OF HIGH EFFICIENCY LIGHT EMITTING
OLED MATERIALSTokyo, Japan, 3rd February 2004 – An important milestone was reached today inthe development of high efficiency polymer OLED (PLED) display materials, when ajoint development agreement was announced between Sumitomo Chemical Co., Ltd.
of Tokyo, Japan (Sumitomo) and Cambridge Display Technology Ltd (CDT) ofCambridge, UK. The agreement will see the two companies co-operate in thedevelopment and scale-up of an exciting new range of solution processable, PLED
materials, designed for use primarily in the manufacture of flat panel displays.
Under the agreement, the companies will focus on the development of new solution
processable, phosphorescent materials, such as dendrimers, which exhibit very highefficiencies and good stability. High efficiency emitters are especially important inportable electronic displays such as in cell phones, PDAs and digital cameras, wherebattery supplies are used. The new PLED materials are also expected to findapplications for TV displays and possibly for lighting devices in the future.
The development team consists of around twenty scientists, mainly PhDs, and will
be based in Japan and in the UK. They will build on impressive track records inmaterial engineering, device optimisation and testing and material scale-up formarket commercialisation.
“The cooperation with CDT over the years has been extremely fruitful. We haveevery confidence and trust in CDT’s technology and expertise”, commented Mr.
Satoshi Kawachi, Senior Managing Director of Sumitomo. “We are excited to begin
this joint development. The new solution processable phosphorescent materials
will offer a variety of applications, including mobile displays and TVs. We believe
this collaboration will broaden our product portfolio to better serve our customers’
diverse needs”.
CDT’s CEO, Dr David Fyfe, commented “We are delighted that Sumitomo havejoined in these developments, which could broaden the potential applications for
PLED displays considerably”. He added: “Sumitomo is already a shareholder andmaterials licensee of CDT. We value highly their display industry expertise and deep
knowledge of LEPs. This new relationship is therefore especially welcome to enable
rapid development and commercialisation of this new and exciting class ofmaterials”.

About Sumitomo Chemical
Sumitomo Chemical Co., Ltd. is one of Japan's leading chemical manufacturers,offering a diverse range of products, including basic chemicals, petrochemicals, finechemicals, agricultural chemicals, and pharmaceuticals. Established in 1913, its
products are now sold in more than 100 countries. Sumitomo Chemical's strong
basic and applied research programs have yielded numerous products that havegained top market shares in global markets.
More information about Sumitomo Chemical is available at: www.sumitomochem.co.jp
About CDT
Cambridge Display Technology is a global leader in the research, development andcommercialisation of light emitting polymers (PLEDs) which are targeted for use ina wide range of electronic display products used for information management,
communications and entertainment. Features include reduced power consumption,size, thickness and weight, very wide viewing angle, superior video imaging
performance and the potential for use on flexible display substrates. Current CDT
licensees are actively developing their manufacturing strategies.
Founded in 1992, the company is headquartered in Cambridge, UK. Moreinformation about CDT is available at: www.cdtltd.co.uk
Editorial Contacts:
Sumitomo Chemical Co., Ltd.
Toshihiro Ohnishi
Corporate Planning & Coordination Office
81-3-5543-5271
ohnishit8@sc.sumitomo-chem.co.jp
CDTAsia
Belinda Tan / James Acheson-Gray
Grayling Asia
+65 325 4606 / +65 97867 245
belinda@graylinggroup.com.sg

Europe and ROW:
Terry Nicklin
Marketing Director
CDT Ltd+44 1223 723586
tnicklin@cdtltd.co.uk