DUBLIN, IRELAND: Research and Markets has announced the addition of the "Research Report on the LED Industry of China and the World from 2009 to 2010" report to its offering.
In the 1950s, RCA first found the infrared radiation of gallium arsenide in other semiconductor alloys. LED is a luminescence component made of semiconductor materials. The component has two electrode terminals. Voltage is applied between the terminals and electricity is switched on.
After the combination of electricity and hole, the remaining power is released in form of light. Different materials have different wavelengths and thus send out lights of various colors. This is the basic lighting theory of LED.
LED can only be applied in diodes that can send out visible light. The diodes that send out near-infrared radiation are called IRED. The diodes that can send out some ultraviolet radiation are called UVLED, and their emission peak wavelengths are near visible short wave length limits.
But generally, the above-mentioned three semiconductor diodes are collectively called LED. According to their different encapsulations, they can be divided into Lamp LED, Display LED and SMD LED. LAMP and DISPLAY belong to the mature market and their growing space is limited.
According to their different constituents, LED wafers can be divided into binary wafers (GaP, GaAS), ternary wafers (GaAlP, GaAsP), quaternary wafers (InGaAlP) and chloride wafers (GaN). Chloride wafers mainly include blue-ray, pure green-ray and white-ray wafers. They have different materials and manufacturing procedures. That LED can be so highly valued is also because of GaN materials.
The global LED industries are mainly concentrated in Japan, EU and Taiwan. EU is mainly dependent on PHILIPS and OSRAM. Japan has Nichia, Toshiba, Showa Denko, Sharp, Citizen and Toyota Gosei. Only Nichia produces mainly LED. But even Nichia, it has a high rate of phosphor business. America has CREE.
These areas have a very high industrial concentration of LED. The top three manufacturers account for over 80 percent, even 90 percent of the output values. The LED industry is comparatively scattered in Taiwan. But its top three manufacturers also account for nearly 40 percent of the output values.
Manufacturers in the mainland are most scattered and they are mainly concentrated in the Downstream. There are nearly 1,000 manufactures mainly doing the packing of LAMP with the lowest profits. Less than five manufacturers can do large-scale SMD packing and less than 10 manufacturers can produce large-scale outdoor LED displays.
There are less than 10 manufacturers producing in the upper course and most of them produce low-end binary red/green LED. The main packing enterprises are Xiamen Hualian, Foshan Guoxing, Jiangsu Wenrun, Huizhou Huagang, Shenzhen Guangliangzi, Ningbo Hepu, Jiangxi Lianchuang, Tianjin Tianxing, Lanfang Xingu, Shenzhen Ruifeng, Shenzhen Ledman and Zhuhai Leedfull (Hongke)
There are almost 10 scaled LED producers in Chinese mainland, among which there are five listed companies dealing with LED-related business. Only in Saman, Newmargin and Silan LED business accounts for over 10 percent.
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