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A LED display is a flat panel display that uses an array of light-emitting diodes (LEDs) as pixels for a video display. Their brightness allows them to be used outdoors where they are visible in the sun for store signs and billboards.
The signs – dubbed "liquid fire" – were visible in daylight; people would stop and stare. [21] What may be the oldest surviving neon sign in the United States, still in use for its original purpose, is the sign "Theatre" (1929) at the Lake Worth Playhouse in Lake Worth Beach, Florida.
Main article: Light-emitting diode physics. In a light-emitting diode, the recombination of electrons and electron holes in a semiconductor produces light (be it infrared, visible or UV), a process called " electroluminescence ". The wavelength of the light depends on the energy band gap of the semiconductors used.
Dot-matrix variable message signs are divided into three subgroups: character matrix, row matrix, and full matrix. In a character matrix VMS, each character is given its own matrix with equal horizontal spacing between them, typically with two or three rows of characters. In a full matrix VMS, the entire sign is a single large dot matrix ...
Electronic signage. Electronic signage (also called electronic signs or electronic displays) are illuminant advertising media in the signage industry. Major electronic signage include fluorescent signs, HID ( high intensity displays), incandescent signs, LED signs, and neon signs. Besides, LED signs and HID are so-called digital signage .
Digital signage on the side of a building reports stock prices. Dow Jones News Ticker, Times Square Digital signage is a segment of electronic signage.Digital displays use technologies such as LCD, LED, OLED, projection and e-paper to display digital images, video, web pages, weather data, restaurant menus, or text.
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