Development History and Evolution of LED large screen

LED large screen is the nickname of LED electronic display screen. The large screen mentioned here only refers to LED full color display screen. LED electronic display screen is a large display system integrating microelectronic technology, optoelectronic technology, computer technology and information processing technology. Through a certain control mode, it is used to display a display screen composed of LED device arrays that display various information such as text, graphics, images, animation, market quotations, video, video signals, etc. It has become a leader in display media with its bright colors, wide dynamic range, high brightness, long service life and stable working performance. widely used in advertising, securities, information dissemination, news release, traffic guidance, stadium events, stage background and other aspects, it is currently an extremely advanced display media in the world. The Historical Evolution of display methods the traditional Baiji lamp cannot overcome its defects of large power consumption and short service life. Although neon lights, advertising light boxes, flat sign advertisements and the like are bright in color, however, the change is monotonous and video image advertisements cannot be played. Although the magnetic replica can be assembled with a simple pattern by computer, it does not have a light source and has poor effect at night. 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 service life of LED chips have developed by leaps and bounds. therefore, its application field is increasingly broad, so the LED display screen market has made great progress. 93 years later, the appearance of ultra-bright blue, red and green luminous tubes made it a fact to realize true color display screen. Outdoor LED display screen was loved by people. especially in sports venues, advertising, news and other fields, the application is increasingly widespread. Judging from the future development trend, several media with video effects have their own performance advantages: cathode tube or quartz tube large TV: The cost is very expensive, usually only 37 inch, and the size is limited. when you don't need a large picture and use it indoors, the effect is ideal. Color liquid crystal splicing wall: the same cost is expensive, the circuit is complex, the area cannot be too large, and it is greatly affected by the viewing angle, the visual angle is very small, but the picture is exquisite and the visual sense is good. Image projection equipment: small brightness, poor definition (The picture is uneven in light)The advantages are easy installation and simple maintenance. TV Wall: there is a dividing line on the surface, and there is a foreign body sensation visually. When it is used outdoors, the brightness effect is poor, which is not suitable for expressing text, but the indoor performance of TV pictures is good. The LED large screen is less limited by space, and can design the size of the screen according to the user's requirements. It has the characteristics of full color effect and large viewing angle, and can represent words, patterns, images (Including animation and video). China's economy is developing rapidly and has higher and higher requirements for the dissemination of information. I believe that in the near future, LED large screen with its bright color, large amount of information displayed, long service life, small power consumption, light weight, small space size, high stability, easy operation, easy installation and maintenance and other characteristics will be in the social and economic development play an increasingly important role.