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  • Corning Unveils 'Green' LCD Glass
Mar 2006
CORNING, N.Y., March 22, 2006 -- Corning Inc. said Tuesday it has developed the first environmentally friendly LCD glass. Corning Display Technologies President James P. Clappin introduced the heavy metal-free product, the Eagle XG, during the US Flat Panel Display Conference in San Diego, Calif.

“Eagle XG is an environmentally friendly glass that is the first of its kind. The value it provides to our customers will continue to increase as future environmental regulations are introduced,” he said.

Clappin said Eagle XG is the first and only LCD glass to be completely free of heavy metals, including arsenic. As with the previously introduced Eagle 2000, it is also free of antimony and barium, and halides such as chlorine and fluorin. These materials, added by some glass suppliers during their manufacturing process, can produce potentially harmful manufacturing byproducts, he said.

Corning produced the first LCD glass substrates that were used by Japanese LCD development labs, leading to the first thin-film transistor LCD products in the mid-1980s. In 2000, Corning introduced Eagle 2000, a product that featured low glass density, higher chemical durability and advanced thermal properties. Corning said Tuesday the Eagle XG glass retains those properties, in addition to being environmentally friendly.

“The quickly changing technical landscape of the LCD industry and the increase of ubiquitous, large, high-performance displays require the continuous evolution of the LCD glass substrate,” said Pete L. Bocko, division vice president and director, commercial technology, Corning Display Technologies. “We believe the environmental area is an opportunity to enhance the value Corning offers to our customers. Eagle XG is one of the most significant advances in fundamental glass technology in a generation.”

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A noncrystalline, inorganic mixture of various metallic oxides fused by heating with glassifiers such as silica, or boric or phosphoric oxides. Common window or bottle glass is a mixture of soda, lime and sand, melted and cast, rolled or blown to shape. Most glasses are transparent in the visible spectrum and up to about 2.5 µm in the infrared, but some are opaque such as natural obsidian; these are, nevertheless, useful as mirror blanks. Traces of some elements such as cobalt, copper and...
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