Solid state lighting development is strong but still obstacles

In 2002 our country light emitting diode (LED) production enterprises amounted to 420, more than 3 employees, production of about 15000000000, the output value of about 8000000000 yuan; last year the yield reached 20 billion, the output value of about 10000000000 yuan, the growth rate of more than 30%, the super high brightness light-emitting diode output growth over 50% billions. In the early stage of our country, it was only a kind of labor intensive industry, which was introduced into the core of the package. In the end of the last century, it was developed from the introduction of epitaxial wafers, and developed into the epitaxial wafer with high technical content.

Solid state lighting development.

Solid state lighting development is strong but still obstacles

Chinese Academy of Sciences in the early 60s of last century to carry out the study of light science, in 80s to production, until the beginning of this century to form a scale. In 2002 our country light emitting diode (LED) production enterprises amounted to 420, more than 3 employees, production of about 15000000000, the output value of about 8000000000 yuan; last year the yield reached 20 billion, the output value of about 10000000000 yuan, the growth rate of more than 30%, the super high brightness light-emitting diode output growth over 50% billions. In the early stage of our country, it was only a kind of labor intensive industry, which was introduced into the core package. In the end of last century, from the introduction of epitaxial wafer processing, the development of epitaxial wafer with high technology content and small batch production.

At present, solid state lighting in China also need strong support.

There are two obstacles to the use of solid-state lighting from civilian lighting

One is the photoelectric conversion efficiency is low, the current is 25 lumens (flux units) / kW, although higher than the incandescent lamp fluorescent lamp, but less than 85 LM / kW, to achieve the economic requirements of civil lighting, need to be increased to 160 lumens / kW to 200 lumens;

Two is the price is higher, more than a dozen times the incandescent lamp, Japan, the United States, the European Union and other semiconductor lighting plan to start, one of the main direction is to reduce costs.

With the continuous improvement of solid-state lighting technology, incandescent lamps will eventually be replaced by the trend has been inevitable. Energy saving, long life, maintenance free, easy to control, environmental protection, semiconductor lamp has so many advantages, we have any reason to refuse it?