LED screen advertising
LED advertising is a new media advertising form and a perfect combination of new media technology and outdoor advertising. LED advertising is advertising words or pictures made up of light-emitting diodes. For example, we usually see large-screen electronic advertisements on the street or some bright advertising words and signboards with colored lights on the roadside. LED (Light-Emitting-Diode, meaning light-emitting diode in Chinese) is a semiconductor that can convert electrical energy into visible light. It changes the principle of tungsten filament luminescence of incandescent lamps and the three-primary color powder luminescence of energy-saving lamps, and uses electric field luminescence. LED display screen (LEDpanel) is a display screen that displays text and images by controlling the display method of semiconductor light-emitting diodes. LED display screens mainly include graphic and text displays and full-color displays.
Development
The history of LED technology is not long ago. The earliest red LED was produced in 1969. In the 1970s, low luminous efficiency LEDs began to be used in indicator lights, digital and text displays. . Since the 1990s, LED full-color display screens have become a new information display media that has developed rapidly around the world. It uses dot matrix modules or pixel units composed of light-emitting diodes to form large-area display screens, combining microelectronics, optics, information processing, etc. Many modern high-tech technologies have become the best carrier for outdoor commercial advertising.
LED display screens are developing rapidly in China. By 2006, China's display market sales reached 401.5 billion yuan, of which the sales of full-color screens in outdoor advertising and sports venues reached 121.7 billion yuan. yuan, accounting for 74.13% of the full-color display market. In the next five years, driven by the Olympic Games, World Expo and Asian Games, China's LED displays, especially full-color displays, will continue to maintain a rapid development momentum. From 2006 to 2010, the average annual compound growth rate of China's LED full-color display market demand will reach 2212%.
LED advertising
LED full-color screen has excellent visual expre ssion, and it complements LCD display screen in the field of advertising media. LCD is what we usually call liquid crystal display. Compared with LED, it has higher resolution and more delicate pictures. However, LCD display is also not suitable for outdoor advertising due to its low brightness and small screen size. It is generally used in building advertising. , small subway advertisements and other communication channels. The area of LCD display screen usually does not exceed 1 square meter, while the production area of LED display screen can range from 1 square meter to several thousand square meters, which is especially suitable for large-area video advertising release. London, England, has just opened a super large full-color LED screen. It is 132 meters long and 24 meters wide. It has a large area and an image transmission distance of several miles. The minimum resolution of LEDs for commercial use has reached 3 mm/pixel. As long as it is 2 meters away from the screen, it will not affect the viewing effect and can be used in indoor spaces. What’s even more surprising is that the LED display screen is not limited to a straight form. It can be made into a special-shaped screen according to space requirements. LED special-shaped screens mainly include curved screens, wave screens, spherical screens, etc. At the Shanghai Auto Show that ended in April 2007, the Shanghai Volkswagen booth used LED screen blocks to create a realistic virtual scene and was rated as the best booth at the Shanghai Auto Show.