[News] Seoul Semiconductor Ends Need for Rare Earths in White LEDs

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 has developed and begun mass producing a chip that emits white light without rare earths. The chip can be as small as 10 micrometers (µm). Seoul Viosys and its parent company Seoul Semiconductor Co., Ltd. (KOSDAQ: 046890) opened the micro LED market with WICOP. WICOP is a chip architecture that eli...