With the rapid development of the electronics industry, in the 1960s display technology has been developed by leaps and bounds, PDP and LCD and other displays have come out. In the 1980s, with the rapid development of computer technology, CGA (Color GraphtcsAdapter) display format come out, display accuracy of 320 × 200 (4 colors). The current display technology is the direction of ultra-high-resolution development.
led display a lot of products, according to the use of the environment is divided into indoor display and outdoor display two categories; according to the size of the luminous pixels are divided into φ3mm, φ3.75mm, φ5mm, φ8mm, φ1 5 mm, φ1 9mm and φ20mm (RGB) three primary colors full color screen; according to the display control mode is divided into communication screen and video display. In addition, led display can also be classified according to the use of features, such as the screen, dot matrix screen, dot matrix digital hybrid screen and road traffic variable intelligence boards. Different types and different performance of the LED display, in the material composition, production technology and control technology and other aspects of the difference is relatively large, technical differences are also obvious.
As the LED display with large size, wide viewing angle, high brightness and colorful features, it is in the monochrome logo and full color display applications are very extensive. With the development of LED technology, LED display to highlight the advantages of a flat panel display of mainstream products in the financial, transportation, sports, advertising and other leaders have been widely used. With the accelerated process of social information, LED display in the field of information display applications will be more broad. LED in the social and economic life of the specific areas of application include:
(1) station, port passenger guide information display. By the LED display as the main body of information and broadcasting systems, train to the prompt system, ticketing information systems, such as the composition of the passenger hub of the automation system, as China's railway station and port technology development and transformation of the important content.
(2) airport flight dynamic information display. China's civil aviation airport construction requirements on the display is very clear, led display is the flight display system (Flight Information Display System, FIDS) preferred products.
(3) sports venues information display. led display as the game information display glaze game live broadcast of the main means, has replaced the traditional lighting and CRT display, a modern sports venues will be one of the facilities.
(4) road traffic information display. In the field of urban transportation and expressway, the development of intelligent transportation system (ITS) has promoted the wide application of LED display as variable information board and speed limit mark.
(5) advertising media. In addition to a single large indoor and outdoor led display as advertising media, the cluster led display advertising system, the train LED display advertising system has also been adopted and promoted.
(6) exhibition. led display as one of the important services provided by the exhibition organizer, to the exhibitors *. There are also some large professional LED display rental companies, there are some large manufacturers to provide rental services.