LED's practical era is coming?

High power LED breakthrough in 2002 after that, at that time, represented by the lumine LED core production companies control the tight market situation, basically is in a seller's market, in fact, until now, the LED seller market situation is still not too big change.

However, since 2005, the Lumine monopoly market situation began to relax, especially in the past two years, high power, high efficiency LED breakthrough in the CREE and Seoul semiconductor, thus breaking the monopoly market structure Lumine.

The recent change is more obvious, some companies began the manufacture of high power LED, which includes more than 100W single chip package, Edison photoelectric is first introduced to 20W package, become the core of power market LED.

In fact, currently more than 20W package, are achieved through the integration of the 1W module, which is not the same as with the previous products, become a square, the driving voltage is because is a series sake and improve a lot, especially over 100W module, the size of the package is close to 56mm * 56mm, and is equipped with a heat sink strict measures, the use of metal materials and heat insulation materials such as ceramics.

Although the current LED with its heat is the same amount of fire, however, LED is still quite a hot technology for small factories. First of all, the problem is not so easy to solve the heat dissipation of LED, the current high power products in the overheated, easily lead to a substantial decline in light efficiency, and color temperature becomes high.

The other is the light attenuation, especially the high power of the product driver circuit can not completely guarantee the constant current output, which gives the circuit design of a new challenge. However, the conditions for this challenge is not yet mature, but also limit the direction of LED to the public.

The advantages of LED on the nature not mentioned again, since the breakthrough of new package model, now has 200W market, once the demand, but also will have more power products, need to do is to increase the size of the package. To do so, just to make up for the shortcomings of traditional light sources, because the traditional light source is usually unable to achieve the surface light source, and LED can make up for such a space to achieve the surface light source.

This can be considered for use in the car, and we have colleagues have changed the brake lights, reading lights and side lights, the effect is quite good, then, if you want to replace the car headlights with LED, can not?

The answer is self-evident, but also a lot of challenges. Although the current white LED luminous efficiency is very high, but because the spectrum is not uniform, in various section of the performance is not uniform, give people the feeling of saturation is not high enough, the solution is simply to use the RGB module, which puts forward a new problem to the manufacturer.

Audi has been walking in the forefront of technology, recently reported that they will be popular in the LED R8 headlamps lighting. In the car, although LED is not afraid of the vibration, but the heat problem has been everywhere, this will be the biggest challenge encountered by Audi R8. However, the reporter thinks, this kind of green light source should be earlier applied to the car to, recently we also see Airbus A330 has used LED as a reading lamp, which can guarantee the stability of the bumps, the heat is less than the traditional incandescent lamp, and no broken corner, get the benefits of LED the full use of.

Of course, at present, the use of high-power LED is not enough, we look forward to the early entry into the family. Once the family decoration are the first choice of LED, I'm afraid that it is LED right, LED instead of 4 billion a year only fluorescent lamp time will come.

Source: China