America will conclude its three-year farewell to inefficient general-purpose incandescent light bulbs on December 31, 2013, the National Lighting Bureau advises.
For three decades, white LEDs have depended on rare earth materials such as yttrium aluminum garnet (YAG) layered onto a blue LED chip (Figure 1). Seoul Viosys Co., Ltd. (KOSDAQ: 092190) today announced that it has broken that dependence. It h... READ
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