The LED large screen is not only another name for the LED electronic display, but the large screen here refers only to the LED full color display.
LED electronic display is a large-scale display system integrating microelectronics technology, optoelectronic technology, computer technology and information processing technology. It uses a certain control method to display a display screen composed of an array of LED devices for displaying various information such as text, graphics, images, animations, quotes, videos, and video signals. With its bright colors, wide dynamic range, high brightness, long life and stable working performance, it has become a leader in display media, widely used in advertising, securities, information dissemination, news release, traffic guidance, stadium events, stage background. In other respects, it is currently an extremely advanced display media in the world.
The historical evolution of the display method The traditional white product lamp can't overcome the defects of large power consumption and short life, neon lights, advertising light boxes, flat signboards, etc. Although the colors are bright, but the changes are monotonous, it is impossible to play video image advertisements; A simple pattern is assembled by computer, but it does not have a light source itself, and the effect at night is poor. In recent years, with the rapid development of microelectronics technology, automation technology and computer technology, the update of production technology and the application of new materials, the brightness and life of LED chips have been developed by leaps and bounds, which has made their application fields increasingly broad. Therefore, the LED display market has been greatly developed. After 93 years, the appearance of super bright blue, red and green light-emitting tubes made the realization of true color display become a reality. Outdoor LED display screens have been loved by people, especially in sports fields, advertisements, news and other fields. . From the perspective of future development trends, the performance advantages of several media with video effects at present are different:
Cathode tube or quartz tube Large TV: The cost is very expensive, usually only 37 inches, the size is much larger, it is limited, it does not need large screen and is used indoors, the effect is ideal.
Color LCD splicing wall: It is also expensive and complicated, the area is not too large, and it is greatly affected by the viewing angle. The viewing angle is small, but the picture is fine and the visual sense is good.
Image projection equipment: low brightness, poor definition (uneven picture receiving), the advantage is easy to install and easy to maintain.
TV wall: There is a dividing line on the surface, which has a sense of foreign body in visual sense. It is not suitable for text display in outdoor applications, but it is not suitable for text display, but the effect is good when the TV screen is displayed indoors.
The large LED screen is limited by space, and can be designed according to user requirements. It has full color effect and large viewing angle, and can represent text, patterns and images (including animation and video).
China's economy is developing rapidly and there are increasingly high demands on the dissemination of information. I believe that in the near future, LED large screen will be developed in the social economy with its bright colors, large amount of information display, long life, low power consumption, light weight, small space size, high stability, easy operation, easy installation and maintenance. Play an increasingly important role.
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Sifter Machine,Screening Machine,Sieving Machine,Vibrating Screener
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