With the improvement of the LED lights performance, the applications of market grow rapidly and extensively. The future development of high-brightness LED grow lights market will be more rapid and extensive growth. Among it, the most obvious penetration rate is white LED lightings. In the late of 90th century, the context of environmental protection and energy saving by market expectations, and also stimulate the industry to quickly research and development the relevant technology. For now, the white LED applications, including mobile phone LCD back-lighting and automotive interior lighting, just these markets already account for about 25 percent of the overall LED sales.
On the other hand about the part of the lighting applications in the realm. General lighting of the building often accounts for 20% of the entire electricity consumption in Japan, the 1990s has been more than an annual $ 100 billion kWh. So the expectations for a new generation of energy-saving light source is quite large, but unfortunately so far, the white LED can only use a very small range. Like a small white LED lightings 5mm, it is not like a light bulb or fluorescent, only one will be able to use of the environment required for the amount of light. Therefore, if the LED can step into the architectural lighting, you need a bigger breakthrough in the overall technology job.
The basic structure of the high-brightness white LED
The white LED is basically in two ways. A multi-chip type, a single-chip type. The former is a three RGB LED package together at the same time making it luminous and produce white light, which is blue or violet. UV LED as the light source used in conjunction with the phosphor to produce white light. The former way, you must combine a variety of characteristics of LED driver circuit is more complex, only complex, only one kinds of the type of the latter single-chip LED, circuit design is relatively easy. Single-chip type is further divided into two categories, a Blu-ray LED lightings source, the other is to use the new-ultraviolet and ultraviolet light. Now, most of the white LED tubes market is the blue LED with YAG phosphor.