For general lighting, people need a white light source. 1998 white light LED drive
The successful. This LED to GaN chip and yttrium aluminium Garnet (YAG) packaged together to make. GaN chip blue (λ p =465nm, Wd=30nm), high temperature sintering of YAG phosphor containing Ce3+ is affected by this Blu-ray activated yellow light emission, peak 550nm. Blue LED mounted on the Bowl-shaped reflecting cavity of the substrate and covered with resin mixed with YAG thin layer, about 200-500nm. Blu-ray part of the issue is the phosphor LED substrate absorption, another part of mixing blue and yellow phosphor issued, you can get white light. InGaN/YAG white LED, by changing the chemical composition and regulation of YAG phosphor phosphor layer thickness, color temperature 3500-10000K colors of white light can be obtained.
Blue LED technology, it simply is a more energy-efficient lighting gives way, also applies to cameras, mobile phones and other technology products. Made of blue-light LED technology lighting more energy efficient and greatly reduce energy use. According to the existing data show that 25% of the world's electricity is used for lighting, and after the use of LED lighting, power for lighting and 4%, and it certainly has changed the entire world.