Electronic components: LED green industry robust in much of industry
Points: LED is a semiconductor diode that can be converted into light energy, issued a yellow, green, blue and other colors of visible light and infrared and UV is not visible. And small compared to incandescent bulbs and neon, which has a low operating voltage and current, high reliability, long life and can easily adjust brightness and so on. Energy Saving dazzling halo
head: high-power white LED with high brightness and has three outstanding advantages (high efficiency, long life, green), applications are expanding. The development of LED industry in line with our policy of promoting energy conservation, "Eleventh Five-Year Plan" green light countries listed in the top ten energy saving projects.
LED industry is in rapid growth stage, growth in 2010, re turning point: Since 2000, the mobile phone backlight applications triggered the explosive growth since the LED, LED gradually into the car, large and medium size LCD panel backlight, special lighting and other fields and obtain a rapid growth of applications to further expand; extensive LED lighting market will become a powerful engine industry forward, the global semiconductor lighting States have developed plans to promote and identify the specific date of delisting of the incandescent bulb, LED lighting large-scale applications within reach. LED technology is now more than speed of development planning, has reached the highest level of general lighting requirements, everything is ready due only to further reduce costs. We expect 2010 will be the progress of LED lighting breakthrough year.
Domestic business opportunities and challenges LED: LED industry in 2010 many patents will gradually expire, domestic enterprises are expected to break the shackles of Europe, the United States and Japan giant's intellectual property rights, using the basis of its huge market and abundant labor resources, occupy in the global LED industry place.
First recommended rating: LED industry concentrated in upstream capital and technology, we are optimistic about business listed companies involved in the top of the industry chain, together create a strong bargaining power of optical, electronic and Hangzhou Silan Microelectronics three security; and consider the LED application market enormous potential, we are also optimistic about LED application large enterprise side A and shares the same side.
Risk Tip: Although the short term, OLED technology has a life of low defects and high cost disadvantage, but was occupied OLED market risks remain.
1, LED principles and applications LED basic principles Light-emitting diode (LED) is a 35 compound semiconductors as materials for optical components, the core is the PN junction. Forward voltage, electron injection from the P N zone area, the hole injection from the P District N District, into the other parts of the region minority carrier and majority carrier recombination and light. PN junction formation material properties (band gap) determines the wavelength of the light given for the visible light is, that determines the color of light.
LED main features are: small size, low power consumption, long life, high brightness low energy, environmental protection, durability and so on. Appropriate current and voltages, LED service life of up to 100,000 hours.
LED's classification and application
Issued according to the type of light, LED visible light can be divided into two kinds of LED and LED are not visible.
Visible LED, including red, orange, yellow, green, blue, violet LED. One red LED materials GaP (binary), AlGaAs (ternary system), and AlGaInP (Quaternary)-based; blue / white GaN-based LED materials.
LED applications are extensive, including:
1, LED display: indoor and outdoor billboard, sports scoreboard, information display, etc.;
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