LED technology in the future development of automotive lighting will become mainstream

As a new green lighting source, each field of semiconductor lighting is gradually into people's daily life. Traffic lighting has become as an important application of LED lighting market, at present, LED has been applied to the inside and outside the vehicle, especially in the automotive interior lighting, color LED applications has been very mature, for example, instrument panel, backlight lighting switch, auto reading lamp or lift head display system, or by car "according to the color selection" (Color-on-Demand) function, let the car manufacturers can use their own unique color recognition, apart from other competitors, or the use of color to distinguish different series of products.

The development history of LED automobile lamp

The development of LED automobile lamp is directly related to the development of LED light source. Semiconductor electroluminescence as early as in 1907 found that due to the light is very weak, slow progress in mass production and slow. In 1968, the United States launched the GaAsp/GaAs light intensity of more than 20mcd of the red LED structure, as a breakthrough point, greatly accelerated the development of LED. Then, the red, yellow and green LED with light intensity up to 1000mcd were developed, and the preliminary application in the signal indication of instrument and Telecom was formed, which formed the early application market of LED. However, due to its light intensity, light attenuation and other performance indicators can not be widely used in automotive lamps. Until 1990 the United States HP company, Toshiba Co of Japan launched InGaAlP/GaAs more than 1000mcd of the structure of light red, yellow high brightness LED and 1993 Nichia Corporation of Japan invented InGaN/Al2O3 blue and green high brightness LED as a symbol, from the technology and mass production and paved the way for the car light source LED.

1985 LED car signal light appeared on the bus for the first time, in 1986 the use of Nissan300zx LED high brake lights marked the beginning of the era of LED auto lamps. The world famous car brands such as BMW, Cadillac, Buick, Volkswagen, Ford, Mercedes Benz, TOYOTA, MITSUBISHI, Mazda and Skoda has launched LED auto lamps.

LED car lights to two digit annual growth rate, in 2005 the output value has reached $546 million, accounting for the world's LED application of 14%. China in 2000 in Shanghai Volkswagen Santana 2000 type first use LED high brake lights. China's LED automotive lamps in the annual growth rate of 70%-80%, the output value of more than 100 billion yuan in 2006.

Seven advantages of LED lights

LED compared with incandescent lamp has obvious advantages. First, long life, generally up to tens of thousands or even one hundred thousand hours. Some people think that if the future of automotive lighting using LED, the entire vehicle use time without replacement lamps. Two is very energy-saving, more than half of the incandescent lamp at least the same brightness. Three light quality is high, basically no radiation, is a "green" light source. Four is a simple structure of the LED, the internal support structure, surrounded by a transparent epoxy resin seal, good seismic performance. Five is not a hot start time, light response speed (nanosecond), suitable for the use of fast moving objects. Six is applicable voltage between 6-12 volts, can be applied to the car. Seven is a small footprint LED, the designer can change the lighting mode, so that the diversification of car styling. Car manufacturers favor LED, the LED itself is determined by the merits of.

The development of LED lights in the future automobile industry

Automotive applications are also constantly developing, brake lights, taillights, as well as steering lights, reversing lights, high brake lights and other applications have been LED, including the brake lights, taillights and high brake lights to apply a larger scale. As the vehicle headlight, due to the high power LED, by LED technology and control performance, especially in optical, electronic control, thermal management field also has some difficulties, it will take three to five years of popularity, the industry is also only in some high-end luxury models began to be used. In addition to the current application of the more common taillights, high brake lights, etc., the future direction of the lights, reversing lights will be large-scale application of LED. 2010 domestic LED automotive lighting market size may be more than 1 billion yuan, the annual output value of $3 billion may be formed within 5 yuan. According to the 2010LED special report released in 2009, is expected by 2013 about 95% of new cars in the world will be one or more of the tail lights in the use of iSuppli LED.

At present, the sales volume of LED auto lamps market is about 10%, but the proportion of domestic LED auto lamps is not high. LED relatively large amount of vehicles in the middle and high end of the automotive business, and these car companies will generally be limited to the LED brand, domestic LED companies are more difficult to enter its supply chain. In addition to domestic and international well-known brands compared to LED, may exist in the aspects of life and the uniformity of the sorting problem some more, at the same time, the car lighting has a strict market regulation, the threshold is relatively high, the car as a luxury consumer goods, sales to the back of a customer, any quality problems will lead to complaints LED, domestic no chance after a long-term large-scale experience of this market, it is difficult to achieve the car with LED standard. The car lamp is very professional in the field, to do LED auto lamps, both auto lamps enterprises or LED enterprises, it will be very difficult, need to automobile enterprises and LED enterprises to fully communicate, especially in the development of LED automotive headlamp on.

According to statistics, at present, our country has the ability to purchase a car for 20 million households, China is likely to become the world's third largest auto market, accounting for about 6% of global share, after the United States and japan. By 2025, the scale of China's auto market will reach the size of the U.S. auto market. China has become the world's fastest growing car sales