White LED implementations. Currently

GaN-based LED to white: Blu-ray LED + yellow phosphor, tri-color LED synthetic white, violet LED + tri-color phosphor ways. The technical approach is the most common form white light blue LED chip and Blu-ray excited phosphors effectively together to form the white LED.LED radiation peak around 470 nm blue light,power inverter  while some blue excitation phosphors emit peak around 570 nm yellow green . Blu-ray and excite phosphors produced yellow green mixed with another part of the transmission Y l O: Ce white. Phosphor currently used mostly for the rare earth-activated aluminates of Y L O: Ce (YAG), when the blue light excitation it emitted yellow green light, so called yellow-green phosphor. The method is luminous, high luminous efficiency, simple preparation, process maturity. But change color with the angle. Light consistency, and the phosphor LED life is also inconsistent, when asked the passage of time, the color rendering index and color temperature will change, affecting the luminous quality of the light source. Red, green, and blue LED chip or three primary colors LED tube mixed to achieve white. The former is a three-chip type, the latter three light-emitting tube assembly type. Red, green and blue LED is packaged in a tube, light efficiency up to 20 lm / W luminous efficiency, color is good [31 However, the inadequacies of synthetic white LED drive circuit is more complex. Three-chip-type primary colors mixed higher costs and inconsistent due to the red, green and blue LED light decay characteristics, with the increasing use of time, the mixing ratio of the three-color will change. Color rendering index will change to reflect ultraviolet light or UV LED excitation trichromatic phosphor to produce white light. With this approach easier to obtain consistent white color, solar panel because color is only determined by the ratio of phosphor, in addition, can also get a very high color rendering index. But the biggest difficulty lies in how to obtain high conversion efficiency of the three-color phosphor, especially efficient red phosphor. And prevent UV leak is also very important.
Accompanied the rapid expansion of China's rapid economic development and population size, resulting in energy consumption is increasing, the development of the city followed by high energy consumption, energy supply and demand have become increasingly prominent, energy shortages will seriously hinder the future development of the city . Semiconductor lighting source is a huge market potential for development of the industry. As technology advances. Semiconductor lighting source applications will rapidly expand. In the next 5-10 years, it will become the main force in the lighting industry. It will change people's understanding of lighting. Development the individualized lighting concept, no doubt a revolution in the lighting field. At the same time. We have to scientific analysis, calm face the semiconductor lighting brings historic opportunity to formulate scientific development plan, grid tie inverter the development of semiconductor lighting health.