Most large LED display signs which are used for advertising will be placed outdoors. As a result of this LED display signs for outdoor use are designed to be weatherproof and robust. They can also be installed as free-standing signage, or attached to existing buildings. Many businesses make use of a combination of LED and static signage, particularly in the case of onsite displays.
One of the key features of LED display signs for outdoor use is that they are luminous, or self-lit. This is one of the greatest advantages that these signs have over traditional 'poster-style' advertisements. While non-luminous signage requires an external light in order to be seen during the hours of darkness, LED display signs are even more effective and visible at night. Even during the daytime, the high level of brightness generated by the diodes in the LED display panels ensures that these signs never go unnoticed.
LED display signs can be of varying sizes, depending on the requirements of the client. However LED display signs for outdoor use tend to be relatively large, especially in comparison with the ticker sized displays that are often used indoors, in restaurants and public areas. Outdoor LED display signage is often used on site, on the premises of the actual business, to attract customers into the building. Therefore it will generally be placed next to streets or motorways, in order to maximize its visibility and hence increase its effectiveness.
Most outdoor LED display panels will be fitted with individually mounted LEDs. In the case of a monochromatic display, this means that each panel will be composed of a series of singularly attached LEDs, which are all of the same color. Full color displays will require blue, red and green LEDs to be individually mounted in close proximity to each other, so as to create tricolor groupings or clusters. To an observer viewing the panel from a certain distance the individual LEDs will be invisible, and only the full colored image will be resolved by the eye.
The potential applications of LED display signs for outdoor use are practically endless. They are often used as billboards, displaying offers and advertisements. Some of these displays feature two or more static images, which are then alternated regularly. Others display video advertisements, while many are used to provide traffic information and warnings. Whatever their application outdoor LED displays are highly effective methods of mass communication, as they are dynamic, luminescent, eye-catching and engaging.