What Are LED Display Signs?

by:Leimove     2020-05-17
Most of us will have seen hundreds if not thousands of LED display signs during our day to day lives, especially if we live or work in cities or large metropolitan areas. Since their development in 1978, LED display signs have grown more and more common, which is a strong testament to their versatility and effectiveness. LED display signs are composed of a given number of LED panels. Obviously the exact number of panels and their composition depends on the size and scale of the display itself. Each of these panels consists of small Light Emitting Diodes, or LEDS, which are used to create text or to form an image. Depending on the LED colors that are used, LED displays may be monochromatic or fully colored. Most people are aware that blue, red and green are the primary colors. Additive combinations of these colors, where the different shades are overlapped, will create a multi-colored display. Therefore in order to create a fully colored LED display sign clusters of red, blue and green LEDs are required. There are two primary methods of embedding these LEDs into the panel, but essentially all that matters is that the panel be composed of small groups of the three primary colors. When a given video image is supplied to the computer program which controls the LED screen, these LEDs are rapidly lit and extinguished in a precise sequence to create the required images. As each image on an LED display is created using clusters of small LEDs, the smaller the diodes in question, the more detailed the image will be. This is directly comparable to pixels on a computer screen or on a digital photograph. As each image is composed of tiny dots of color, the small and more numerous the dots, the more detail that will be contained in the image. Of course highly detailed images are not necessary for most applications of LED panels. Indeed monochromatic LED display signs are used widely in the modern world to provide essential text-based information to the public. These signs can be seen on buses as destination displays, in banks as ticker displays and in airports and train stations. Many full color LED display signs are used to display poster-like advertisements, logos, and brief video clips for advertisement purposes. In summary, LED display signs can be used for just about any means of mass communication. Due to their versatility and effectiveness their use is growing and the range of applications to which they are being put is growing also.
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