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Research Report on the LED industry of China and the
World from 2009 to 2010 - 28 Jan, 2010
In the 1950s, RCA first found the infrared According to the manufacturing process, business. America has CREE. These areas
radiation of gallium arsenide in other the LED industry can be divided into three have a very high industrial concentration of
semiconductor alloys. LED is a stages: epitaxy or epiwater in the upper LED. The top 3 manufacturers account for
luminescence component made of course, chip producing in the midstream over 80%, even 90% of the output values.
semiconductor materials. The component and packing in the Downstream. There is The LED industry is comparatively scattered
has two electrode terminals. Voltage is also a manufacturer before the upper in Taiwan. But its top 3 manufacturers also
applied between the terminals and course, that is, the substrate manufacturer. It account for nearly 40% of the output values.
electricity is switched on. And after the usually produces sapphire substrates. It also
combination of electricity and hole, the has carborundum substrates, which is the Manufacturers in the mainland are most
remaining power is released in form of light. special esoterica of CREE. However, scattered and they are mainly concentrated
Different materials have different because it has a low output value and can in the Downstream. There are nearly 1,000
wavelengths and thus send out lights of be applied in RF, it is not really a member of manufactures mainly doing the packing of
various colors. This is the basic lighting the LED industry chain. LAMP with the lowest profits. Less than 5
theory of LED. manufacturers can do large–scale SMD
In the upper course, producers use single packing and less than 10 manufacturers can
LED can only be applied in diodes that can chips as substrates for epitaxy, and then produce large-scale outdoor LED displays.
send out visible light. The diodes that send employ different epitaxies (such as LPE, There are less than 10 manufacturers
out near-infrared radiation are called IRED. MOCVD and MBE) to foster multilayer and producing in the upper course and most of
The diodes that can send out some polynary thin film materials with different them produce low-end binary red/green
ultraviolet radiation are called UVLED, and thicknesses. And in the midstream, LED. The main packing enterprises are
their emission peak wavelengths are near according to the demands of LED structural Xiamen Hualian, Foshan Guoxing, Jiangsu
visible short wave length limits. But components, producers first do evaporation Wenrun, Huizhou Huagang, Shenzhen
generally, the above-mentioned three and then make metal electrodes in both Guangliangzi, Ningbo Hepu, Jiangxi
semiconductor diodes are collectively called terminals of LED through photolithographic Lianchuang, Tianjin Tianxing, Lanfang Xingu,
LED. According to their different and heat treatment on epi wafers, and then Shenzhen Ruifeng, Shenzhen Ledman and
encapsulations, they can be divided into cut them into LED crystal grains after Zhuhai Leedfull (Hongke).
Lamp LED, Display LED and SMD LED. wearing down substrates and polishing. In
LAMP and DISPLAY belong to the mature the Downstream, producers use packing There are almost 10 scaled LED producers
market and their growing space is limited. techniques to pack crystal grains into LED in Chinese mainland, among which there are
products and pack them into different five listed companies dealing with LED-
According to their different constituents, applicable products to be used in the related business. Only in Saman,
LED wafers can be divided into binary applicable markets. Newmargin and Silan LED business
wafers (GaP, GaAS), ternary wafers (GaAlP, accounts for over 10%.
GaAsP), quaternary wafers (InGaAlP) and The global LED industries are mainly
chloride wafers (GaN). Chloride wafers concentrated in Japan, EU and Taiwan. EU This report analyzes the global and Chinese
mainly include blue-ray, pure green-ray and is mainly dependent on PHILIPS and LED industries in terms of concepts,
white-ray wafers. They have different OSRAM. Japan has Nichia, Toshiba, Showa patents, applications and LED
materials and manufacturing procedures. Denko, Sharp, Citizen and Toyota Gosei. manufacturers upstream and downstream.
That LED can be so highly valued is also Only Nichia produces mainly LED. But even Source: China Research and Intelligence
because of GaN materials. Nichia, it has a high rate of phosphor
LightPath Technologies develops semiconductor QCLs - 28 Jan, 2010
A new aspheric moulded lens has been introduced by LightPath semiconductor lasers, QCLs achieve laser emission through
Technologies for the development of semiconductor QCLs. intersubband transitions in a stack of semiconductor multiple
Semiconductor quantum cascade lasers (QCLs) are part of a new quantum well heterostructures.
project by LightPath Technologies to introduce a new aspheric
molded lens for collimating light from long-wave and medium-wave Jim Gaynor, chief executive officer and president of LightPath
infrared lasers. Technologies, said the new lens will allow system designers “to take
advantage of QCLs to address rapidly expanding markets such as
The lens manufactured from the firm’s Black Diamond chalcogenide the $1.2 (£744 million) billion gas and environmental sensing
glass has a high numerical aperture which is designed for maximum equipment market, the $6 billion infrared countermeasure market
light collection from QCLs. Optical designers can take advantage of and $37 billion explosives detection systems market”.
aspheric performance in medium-wave infrared lasers without having He added that LightPath Technologies is expanding, with the
to build expensive zinc selenide lenses. Unlike interband introduction of its lens, its laser collimation lenses traditional market.
12 www.compoundsemiconductor.net January/February 2010
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