According to official statistics of China, there are currently 62 LED chip manufacturers in land-based enterprises, more than 1,000 packaging companies, and nearly 2,000 related downstream application companies.
As the LED momentum intensifies, will there be a surplus of LEDs? The reporter invited Zhao Lixia, a doctor of the Institute of Semiconductors of the Chinese Academy of Sciences, to have a dialogue.
"Securities Daily": What is the current market sales status of LED?
Zhao Lixia: The Semiconductor Industry Alliance released the 2009 China semiconductor lighting industry data: In 2009, China's chip output value increased by 25% compared with 2008, reaching 2.3 billion yuan; LED package production value was 20.4 billion yuan; semiconductor lighting applications after getting rid of the impact of the financial crisis The contrarian growth rate was over 30%, reaching 60 billion yuan. In 2009, the total scale of China's LED industry totaled 82.7 billion yuan!
"Securities Daily": What is the difference between LED core technology at home and abroad?
Zhao Lixia: The LED industry chain is divided into upstream epitaxy and chip, midstream packaging, and downstream applications. The core of semiconductor lighting is the upstream wideband gap semiconductor material. At present, there are about 20 companies that can mass produce epitaxial chips in China, but There are still some gaps in the technical level of the products and abroad. Recently, CREE Corporation of the United States announced that the luminous efficiency has reached 208 lm/w, which is the best level of LED luminous efficiency.
With the advancement of semiconductor lighting technology, China has developed hundreds of lighting products such as indication, signal, display, backlight, and illumination. By the end of 2008, China's semiconductor lighting industry achieved nearly 70 billion yuan in output value, and more than 3,000 semiconductor lighting related enterprises. It has initially formed four major semiconductor lighting industry gathering areas in the Pearl River Delta, Yangtze River Delta, Northern Region, Jiangxi and Fujian. Each region has initially formed a relatively complete industrial chain and a relatively reasonable industrial layout. The Ministry of Science and Technology has also approved seven industrialization bases in Xiamen, Shanghai, Dalian, Nanchang, Shenzhen, Yangzhou and Shijiazhuang.
Securities Daily: What is the current LED production capacity? Is it possible for a listed company to expand its production in the domestic market and whether there will be excess?
Zhao Lixia: Domestic listed companies are generally increasing production capacity. For example, on January 12, 2010, Sanan Optoelectronics (600703, shares it) announced 12 billion yuan investment in Wuhu LED industrial base. On January 16, the TCL Huaxing Optoelectronics 8.5-generation LCD panel project with a total investment of 24.5 billion yuan was officially started. On February 1, Wuhu Municipal Government signed a contract with Dehao Runda (002005, shares it) Optoelectronics Co., Ltd., with an investment of 6 billion yuan to build a LED optoelectronic industrial base. Taiwan’s Chi Mei Electronics also expects its total investment in Nanhai, Guangdong, to exceed US$2 billion by 2010. LED industry investment has been overheated and needs to be alert to overcapacity problems.
Securities Daily: What are the bottlenecks that LED companies are currently experiencing?
Zhao Lixia: The bottlenecks encountered by LED companies in the upper, middle and lower reaches are different. This includes technical, conceptual, equipment, talent, etc. The MOCVD equipment currently used to grow LED epitaxial materials is mainly concentrated in foreign companies such as VEECO, Axitron, etc., to develop localized MOCVD equipment, and practical application is urgently needed. The problem.
Securities Daily: Will LEDs be eliminated, and what is the replacement technology?
Zhao Lixia: Personally think that it will not be eliminated. LED lighting involves the research and application technology development of materials, optics, electricity, thermals, chemistry, machinery and other disciplines. It has a large space for scientific and technological progress, and the characteristics of cross-fusion are obvious. Moreover, as mentioned above, the core of semiconductor lighting is a wide-bandgap semiconductor material, which is considered as a breakthrough in third-generation semiconductor technology, the development of optoelectronic technologies such as optical storage, optical transmission, optical sensing, laser and other functional devices, and a new generation. The development of information technology has extremely important strategic significance. And with the rapid development of semiconductor lighting, it is constantly expanding into new areas.
Securities Daily: What is China's LED forecast market and future?
Zhao Lixia: Due to the huge and multi-layer application requirements of semiconductor lighting, the development of LED is certainly optimistic, and the market demand will drive the research of basic physical problems of nitride materials.
In 1962, General Electric's Nick Holonyak Jr. developed the first practical application of visible light-emitting diodes. LED is an abbreviation of English light emitting diode. It is a solid-state semiconductor device that can directly convert electricity into light. The heart of the LED is a semiconductor wafer that utilizes a solid semiconductor chip as a luminescent material.
The intrinsic characteristics of the LED determine that it is the most ideal light source to replace the traditional light source, and it has a wide range of uses.
LED has the characteristics of small size, low power consumption, long service life, high brightness, low heat, environmental protection, durability and controllability. But the price of led is more expensive, compared to incandescent lamps, the price of a few led can be comparable to the price of an incandescent lamp.
In the late 1990s, the breakthrough of the third-generation semiconductor material GaN technology triggered the third revolution in the field of lighting, which is based on solid-state lighting (also known as "semiconductor lamp") based on semiconductor light-emitting diodes (LED). Replacing incandescent lamps and fluorescent lamps into the general lighting field In 2005, the global LED market reached US$5.73 billion.
At present, the more mature applications of LED in China are architectural landscape lighting, large-screen display, traffic lights, indicator lights, small-size backlights for mobile phones and digital cameras, solar LED lighting, automotive lighting, special lighting and military, etc. Lighting is the largest application area of ​​LED in China.
It is understood that China has initially formed four major LED industry regions in the northern regions such as the Pearl River Delta, the Yangtze River Delta, the Delta, Beijing and Dalian. LED companies represented by Sanan Optoelectronics, Shanghai Blu-ray and Hangzhou Silan Mingxin have grown rapidly.
Experts predict that LED products will have a luminous efficiency of 150 lm/W in 2015, and LED lighting will account for 20% of the lighting market. Experts predict that LED products will have a luminous efficiency of 150 lm/W in 2015, and LED lighting will account for 20% of the lighting market.
Rental generators are portable power sources that can be hired or rented for temporary use. They are commonly used in situations where there is a temporary need for electricity, such as during construction projects, outdoor events, or power outages.
Rental generators come in various sizes and power capacities to meet different needs. They are typically fueled by diesel, natural gas, or propane, and can provide electricity to power equipment, appliances, or even entire buildings.
The rental process usually involves contacting a generator rental company and specifying your power requirements. The company will then recommend a suitable generator and provide delivery, setup, and maintenance services. Rental generators are typically rented on a short-term basis, ranging from a few hours to several weeks or months, depending on the customer's needs.
Renting a generator can be a cost-effective solution compared to purchasing one, especially for one-time or infrequent power needs. It also allows for flexibility, as the generator can be easily returned or exchanged if the power requirements change.
When renting a generator, it is important to consider factors such as power capacity, fuel efficiency, noise levels, and any additional accessories or services required. It is also crucial to follow proper safety guidelines and ensure that the generator is used and maintained correctly to prevent accidents or damage.
Rental Series,1800Rpm Diesel Generator Sets,Diesel Generator Set 60 Hz,Diesel Generator Set 91Kw
Grandwatt Electric Corp. , https://www.grandwattelectric.com