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Toray develops blue light emitting materials

30
Apr '08
Toray Industries Inc announced that it has succeeded in developing blue light emitting materials, boasting the world's highest levels of efficiency and pure color emissions, for use in full-color organic EL displays.

The combination of Toray's proprietary molecular design technology and nano-dispersion technology was instrumental in the material achieving superior light emitting performances of luminous efficiency 6 cd/A (candela/ampere) and color purity (CIE(x,y) = (0.14,0.10)) in combination with Toray's electron-transporting material.

Evaluation of these newly developed materials with respect to its applications is currently underway and Toray is committed to accelerating the process towards its early commercialization.

Organic EL display possesses various features including self-emission with superior visibility, suitability for slim products and high-speed response, and is attracting widespread attention as the next-generation flat panel display.

Further improvements in features, low power consumption in particular, are needed for full takeoff of the market, requiring the development of materials that achieve low driving voltage and high efficiency.

Toray has already succeeded in developing red light emitting materials with low driving voltage and high efficiency as well as electron-transporting material, and has been producing them commercially, with a number of panel manufacturers adopting these materials in their products.

Toray's electron-transporting material in particular, with high electron-transporting property, has been highly acclaimed by users as a material that can contribute significantly towards lowering the power consumption of organic EL displays.

It, however, faced the issue of lowered emission performances caused when used with some of blue light emitting materials, and the problem was observed only in combination with the blue color of the three primary colors.


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