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SDK Develops Aluminum Reflector for Liquid Crystal Displays

February 26, 2004

Showa Denko K.K. (SDK) has developed high-performance aluminum reflector for crystal liquid displays (LCDs) for use in personal computers and television sets. Sample shipments started last month.

This product is an extension of SDK’s ST60 aluminum alloy with high thermal diffusivity comparable to that of pure aluminum, which is used increasingly as heat sinks for plasma displays and LCDs.

Specifically, the newly developed reflector is manufactured by providing proprietary white coating on ST60 sheet. Compared with conventional product (aluminum alloy to which white film of polyethylene terephthalate is attached), the newly developed reflector offers higher heat dissipation efficiency and light resistance, as well as reflectivity of more than 95%.

As the current trends in LCDs are toward larger display size and higher brightness and precision, the number of lamps for backlighting is increasing. This means that the reflectors must have higher reflectivity and ensure uniform heat dissipation. SDK’s new reflector meets these requirements and can cope with high heat produced inside a backlighting unit, a problem that could shorten the life of lamps and reduce brightness.

Furthermore, the white coating SDK has introduced is capable of absorbing ultraviolet, resulting in the reduction of ultraviolet radiation toward the front of the display unit. Since coating is possible even after press working, SDK will be able to produce reflectors that are complex in shape and serve as chassis as well.

SDK will start selling the newly developed aluminum reflectors in commercial quantities in the latter half of this year. The company is planning to achieve sales of ¥1.7 billion in 2005 from entire ST60 series of products, including these aluminum reflectors.

Under the ongoing medium-term consolidated business plan named the “Sprout Project,” SDK is allocating resources to the “displays and their materials” business, positioning it as one of the strategic growth businesses.