LED display industry rises

According to the classification of application sites, LED display screens can be divided into indoor and outdoor types according to different application sites. The indoor screen is mainly used indoors. In the manufacturing process, the luminous grains are first made into dot matrix modules (Or digital tube) , Then the module is spliced into a display unit board of a certain size, and the display unit Board is spliced into the size required by the user according to the user's requirements. According to the size of pixel points, indoor screens are divided into Ф 2, Ф 3 and Ф 3. 75, Ф 4. 8, Ф 5, Ф 8, Ф 10, etc. The outdoor screen is mainly used for outdoor use. In the manufacturing process, the luminous grain is first packaged into a single light-emitting diode, which is called a single lamp. The single lamp used for manufacturing the outdoor screen generally uses a reflective cup with a concentrating effect to improve the brightness; Then a plurality of LED single lamps are packaged into a single pixel tube or pixel module, and the pixel tube or pixel module forms a dot matrix display unit box, according to user needs and display application sites, the required size is composed of a display unit box as the basic unit. The box should be sealed in design to achieve the purpose of waterproof and anti-fog, so that it can adapt to the outdoor environment. According to the size of the pixel point, the outdoor screen is divided into Ф 11, Ф 14, Ф 16, Ф 19, Ф 21, Ф 26, Ф 36 and other specifications. According to the classification of primary colors: according to the color of the LED used, the LED display screen can be divided into three types: single primary color, double primary color and full color. Single primary color: each pixel has only one color, most of which is red, because red has higher luminous efficiency and can obtain higher brightness, green or mixed color, that is, some are red, some are green, and some are yellow. Double primary colors: each pixel has two primary colors, red and green, which can be superimposed into yellow. Under the condition of gray level control, more than 65535 colors can be combined through the changes of different gray levels of red and green. Full color is also called three primary colors. Each pixel has three primary colors of red, green and blue. Under the condition of gray scale control, the colors of nature can be well restored through the changes of different gray scales of red, green and blue, combine 16777216 colors. In fact, the rapid development of the photoelectric industry in recent years has received extensive attention from the society, and the display products and technologies as visual communication media for human-computer information have developed rapidly. With the formation of the product standard system and the implementation of a series of standards, the LED display industry is developing in a healthy and orderly direction. LED display screen is currently a lucrative market, in addition to large stadiums, it is also widely used in highway toll stations, highway signboards, airport flight information display, docks, ports, railway stations, tunnels, game consoles, outdoor billboards in city squares, government buildings and parking lots, etc, used to display some dynamic information in real time. For a long time, due to manufacturing process and other reasons, the characteristics of LED are very different. When the display modules made of these LED are integrated into LED display screens, if there is not enough compensation for these differences, then the difference of brightness and color of LED electronic display screen will be clearly visible. At the same time, after the LED display screen is installed and used for a period of time, the brightness and chromaticity of the LED will decay with time, but the degree of attenuation of each LED is different. this will lead to a decline in the visual quality of the LED display screen. In addition, the replacement of LED modules damaged during the use of LED screens leads to the mismatch between the new modules and the whole screen, which will also reduce the visual quality of LED displays. The production and manufacture of LED display screens are relatively large. There are hundreds of small and medium-sized LED display screen enterprises in Shenzhen, and their technologies are relatively mature. The structure and principle of display screens manufactured by various enterprises are basically similar. How to improve the technical performance of display screens and reduce costs is the key to competition among various enterprises. At present, the prices of LED display screens sold in the market are basically the same, but the quality of display screens produced by different enterprises is different for many reasons, including LED display module quality, brightness, brightness uniformity, packaging and other technical differences, data communication transmission mode, anti-interference ability and control circuit differences, the technology of correcting LED display screen can effectively help enterprises to solve these problems. At present, the number of enterprises adopting LED display screen correction technology is gradually increasing. With the increasing demand for high-quality display screens in the industry, LED display screen point-by-point correction technology will be vigorously promoted. and eventually become one of the key technologies to ensure quality. However, due to the recent collapse of the company, the LED display industry has been pushed to the crater. The market situation in which profits fell to the bottom once made everyone deeply worried about the future development of the industry. Zhang Hanliang, deputy general manager of Shenzhen corinte Co. , Ltd. , used stable period-Development period-Peak and trough- The five processes of maturity summarize the development of LED display industry. He said that before 2005, because the full-color series was not very mature, the development of LED displays was relatively slow. It began to mature in 2006, and in- In the three years of 2008, the profit of LED display screen reached its peak.