LED display: a flat panel display, composed of a small LED module panel. LED light - emitting diodes. It is a diode made of a compound of gallium (Ga) and arsenic (As), phosphorus (P), nitrogen (N), indium (In), by controlling the display of a semiconductor light emitting diode. When the electrons and holes Composite can radiate visible light, which can be used to make light-emitting diodes. In the circuit and the instrument as a light, or composed of text or digital display. Phosphorus gallium arsenide diode red, gallium phosphide emitting green light, silicon carbide diode yellow, indium gallium nitride diode blue light. LED display is generally used to display text, images, video, video signals and other information.
The reason why LED is widely valued and developed rapidly is inseparable from its own advantages. These advantages are summarized as follows: high brightness, low operating voltage, low power consumption, large size, long life, impact resistance and stable performance. LED development prospects are extremely broad, is moving toward higher brightness, higher weather resistance, higher luminous density, higher luminous uniformity, reliability, full color direction. LED display widely used [4] Advertisements in different outdoor venues such as sports venues, commercial applications, banks, securities, postal, docks, shopping malls, stations, postal services, telecommunications, institutions, monitoring, schools, restaurants, hotels, entertainment and so on Publicity, the 2013 Universiade UNILUMIN Umesh25 building with real-time broadcast screen smooth and delicate.