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Three stages and application areas of indoor outdoor LED display
Before the 1990s, the growth of LED displays was formed. On the one hand, due to the limitation of LED material devices, the application field of LED display screens has not been widely developed. On the other hand, display screen control technology is basically a communication control method, which objectively affects the display effect. The LED display in this period is widely used in foreign countries. There are few domestic products. The products are mainly red and green. The control method is communication control. The gray level is single point and 4 level gray, and the cost of the product is relatively high.
In 1990-1995, this stage was a period of rapid development of LED displays. In the 1990s, the global information industry grew at a high speed, and information technology continued to break through in various fields. LED display screens have also seen new results in LED materials and control technologies. Blue LED chip successfully developed, full-color LED display enters the market; technology development in the field of electronic computers and microelectronics, video control technology appears in the field of display control technology, display gray level achieves 16 gray levels and 64 levels Grayscale graying, the dynamic display effect of the display is greatly improved. At this stage, the development of LED display screens in China is very fast. From the initial enterprises, the annual output value of tens of millions of yuan to dozens of enterprises, the annual output value is several hundred million yuan. The product application fields involve financial securities, sports and airports. , railways, stations, road traffic, commercial advertising, postal and telecommunications and many other fields, especially the development of the securities stock industry in 1993 has led to a substantial increase in the LED display market. The mainstream product situation of LED display in the field of flat panel display has basically taken shape, and the LED display industry has become an emerging high-tech industry.
Three stages and application areas of indoor outdoor LED display
Since 1995, the development of LED screen rental has entered a period of overall improvement and improvement of the industrial structure. At the same time, the internal competition of the LED display industry has intensified, and many small and medium-sized enterprises have been formed. The prices of products have fallen sharply, and the application fields are broader. The products have experienced a series of new problems in terms of quality and standardization. The relevant departments have developed LED displays. Attention has been paid to and proper regulation and guidance have been carried out, and work in this area is gradually deepening. After several years of development, China's LED display industry has basically formed a number of key enterprises with a certain scale. According to incomplete statistics, by the end of 1998, there were more than 20 enterprises with annual sales of more than 10 million yuan, and their total sales amounted to about 600 million yuan, accounting for more than 85% of the total market. There are more than 100 enterprises engaged in LED display in the country, employing nearly 6,000 people. The annual sales of the industry is nearly 800 million yuan. The growth rate in 1996 and 1997 has remained at around 40%. In 1998, it fell slightly. In the domestic market, the domestic LED display market share is nearly 100%, and there are basically no similar products in foreign countries. The 43rd World Table Tennis Championships main venue Tianjin Sports Center, Beijing-Kowloon Railway, Beijing West Railway Station, Capital Airport, Pudong Airport And so on, all of them won the bid by domestic representative enterprises. The technical level is relatively ahead.
    The application of LED displays involves many areas of social economy, including:
    Securities trading, financial information display. The LED display in this field accounts for more than 50% of the domestic LED display demand in previous years, and is still the main demand industry for LED display. LED displays are widely used by the Shanghai Stock Exchange, the Shenzhen Stock Exchange and tens of thousands of securities and financial institutions throughout the country.
    Airport flight dynamic information display. The requirements for information display in civil aviation airport construction are very clear. LED display is the preferred product of Flight Information Display System (FIDS), Capital Airport, Shanghai Pudong International Airport, Haikou Meilan Airport, Zhuhai Airport, Xiamen Gaoqi Airport, Shenzhen Huangtian Airport, Guangzhou Baiyun Airport and dozens of new and renovated airports in China have selected domestic LED display products.
    Port and station passenger guidance information display. The information system and broadcasting system with the LED display as the main body, the train arrival and disclosure system, and the ticket information system together constitute the automation system of the passenger transportation hub, Beijing Railway Station, Beijing West Railway Station, Nanchang Station, Dalian Port and other important domestic railway stations and ports. All products and systems provided by domestic manufacturers are installed.
    The stadium information is displayed. The LED display has replaced the traditional light bulb and CRT display. The Tianjin Sports Center, the main venue of the 43rd World Table Tennis Championships, adopted the domestic color video LED display for the first time, which was widely praised. Shanghai Sports Center, Dalian Stadium and many other domestic important The stadium has adopted LED display screens as the main means of information display.
    Road traffic information display. The rise of Intelligent Transportation Systems (ITS), in the fields of urban transportation, highways, etc., LED display screens as variable information boards, speed limit signs, etc., instead of foreign similar products, have been widely adopted.
    The dispatching command center information is displayed. Power dispatching, vehicle dynamic tracking, vehicle dispatch management, etc. are also gradually adopting high-density LED displays.
    Business promotion and information display in service areas such as postal, telecommunications, shopping malls and other shopping centers. Domestically produced LED displays play a role in information display in service areas throughout the country.
    Advertising media new products. In addition to a single large indoor and outdoor display as advertising media, cluster LED display advertising systems have appeared in some cities in China; the train LED display advertising system has also been adopted and promoted in dozens of passenger trains nationwide.
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