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The development of Led display can be divided into the following phases: first phase 1990 to 1995, mainly monochrome and 16 color graphics screen. Used to display text and simple images, mainly used in railway stations, financial securities, banks, post offices and other public places, as public information display tools.
The second stage is from 1995 to 1999, there have been 64, 256 level gray-scale two-color video screen. Video control technology, image processing, optical fiber communication technology applications will enhance the Led display to a new level. Led display control LSI chips special at this time developed by domestic companies, and can be applied.
The third stage, from 1999, red, pure green, blue Led tube flooded into China, while domestic enterprises in-depth research and development work, using red, green, and blue Led production of full-color display has been widely used , poured into sports stadiums, convention centers, squares and other public places, which will bring the domestic large-screen full-color era.
With the rapid development of Led materials market, surface mount device is available from 2001, mainly used in indoor full color, and its high brightness, colorful, low temperature characteristics, the point spacing can be adjusted by different price Requirements were accepted, in just two years time, product sales have more than 300 million yuan, surface mount full-color Led display application market entered the new century. To meet the 2008 Olympic Games, "downsizing" plan, Liard developed a surface mount dual color displays, a lot of time for the training center and game scoring. Full color in Olympic venues, in order to tighten investment, full color way is mostly detachable, live during the Olympic Games as a tool can be used for rental after the event, as the performance of national policies such as public places, tools released by In this way cost recovery as soon as possible.
On the market, China's accession to WTO, Beijing's successful Olympic bid and so on, into the development of Led display industry, a new opportunity. Domestic Led display market continues to grow, currently in the domestic market, domestic Led display market share of nearly 95%. Led display the international market capacity is expected to 30% a year growth rate.
Currently, Led display manufacturers concentrated primarily in Japan, North America, China Led manufacturers in which the insignificant share of exports. According to incomplete statistics, the world, there are at least 150 manufacturers full color, in which products are complete, the larger company has some 30 or so.