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In recent years, with the maturity of semiconductor technology and manufacturing technology, the dot spacing of LED display screens has become smaller and smaller, the density has become higher and higher, and the definition has been continuously improved. The function and application field of small-pitch LED display screens It is also constantly enriched and began to enter the room from the outdoors, and is rapidly replacing traditional LCD, splicing walls, projection lamps and other display products. This undoubtedly has higher requirements on the processing precision of the cabinet and module, as well as the production process and display system. The global LED display market is still in the ascendant stage With the advancement of urbanization and the promotion of efficient and environmentally friendly lighting, the LED industry has developed rapidly in recent years. Among the global LED application fields, the general-purpose lighting and automotive lighting fields are the fastest-growing markets, and have become an important driving factor for the rapid growth of the LED market in the future. In addition, the LED display application market still shows great growth potential and is one of the most stable growth points for LED applications. The China Report Hall predicts that in the field of general lighting, the global LED lighting output value will reach 17.8 billion US dollars in 2014, and the total number of LED lighting products shipped will reach 1.32 billion. Philips' market forecast shows that the market size of global LED-related lighting products will reach 70 billion to 80 billion euros by 2016, and the proportion in the overall lighting market can reach 45-50. Display is also the main application area of ​​LED. one. The LED display has the advantages of high brightness, large viewing angle, long viewing distance, flexible shape and rich color, which can meet the needs of different application scenarios, especially in the large size display application. Since the beginning of the 1990s, China's LED display industry has maintained a high-speed development trend, which has created the initial prosperity of the LED industry. At present, the global LED display market is still in the ascendant stage. The small pitch of the LED display era started in 2012, and gradually matured in 2013. In 2014, demand grew rapidly. When small-pitch products became quietly popular, the world's major LED manufacturers began to compete to launch their own small pitch. Strategy, domestic and international are also optimistic about the prospect of small-pitch LED products. Among them, the high-density small-pitch LED display is an important emerging market in the industry, and it is also one of the markets with high profit margins. At present, more than 20 domestic LED companies have released their own small-pitch products, such as Liard, Zhouming Technology, Lianjian Optoelectronics, Ai Biesen, Easystar Electronics, Shanghai Sansi, Mairui Optoelectronics, Dazu Yuanheng, Qipu Optoelectronics and other enterprises. Take Abbyson as an example. In 2012, it started to introduce small dot pitch products. It was the first to focus on the European, American, Japanese and Korean markets. The harvest was quite abundant. In the first half of 2014, the total order volume was about 200 million yuan. The orders in the first half of 2014 were the same as the same period in 2013. The growth has been more than doubled. With the improvement of technology, the display accuracy of small-pitch display screens fully meets the needs of close-range viewing, and will compete with DLP and LCD splicing screens, and the market prospect is large. The market space of small-pitch LED displays has preempted the market of DLP display walls, LCD and PDP splicing screens. The situation of LED small-pitch display screens With the rise and growth of the emerging civilian commercial market, products such as small-pitch LED TVs have been quickly recognized, which will accelerate the development of small-pitch LEDs. The small spacing will not only be limited to the control room, the space in the high-end indoor display market is huge, especially the high-end conference, command and control market that used the high-brightness DLP professional engineering projection, which is easily broken by the small-pitch LED display. In addition, for applications that do not require high-resolution maps or engineering drawings, such as various image projects, the background wall of the broadcasting industry, commercial brand display, public information display, intelligent transportation and other application fields, these are also the driving force for the continuous development of small distances. . On the other hand, small-pitch LED displays do not have the ability to completely replace LCD TVs. On the one hand, with the increase of resolution, the dot pitch is reduced, and higher requirements are placed on heat dissipation, life, color consistency, maintenance, etc., and it is not easy to solve. On the other hand, low-light and high-gray has become a threshold for LED manufacturers to enter high-end display applications. Small-pitch LED screens must solve the problem of reducing brightness without losing grayscale and image quality. At the same time, the cost is too high to limit the development of small spacing to a certain extent. It takes a certain amount of time for LCD TVs to dominate the market. Conclusion: LED full-color display has been integrated into all aspects of our lives, especially the rapid development of technology in recent years, as well as the introduction of small-pitch LED display. Some experts predict that a revolutionary change will occur in the field of LED displays. In the next 10 years, LCD monitors will likely exit the mainstream stage like CRT monitors and will be completely replaced by small-pitch LED displays.