LED electronic display is composed of tens of thousands--hundreds of thousands of semiconductor light-emitting diodes. Different materials can be used to create different color LED pixels. At present, the most widely used are red, green, and yellow. The development of blue and pure green LEDs has reached a practical stage.
The LED display can display changing digital, text, and graphic images; it can be used not only in indoor environments but also in outdoor environments, with advantages that cannot be matched by projectors, TV walls, and liquid crystal displays.
The rapid development of LED's widespread attention is inseparable from its own advantages. The advantages are summarized as:
High brightness, low operating voltage, low power consumption, miniaturization, long life, shock resistance and stable performance. The development prospects of LEDs are extremely broad, and they are currently moving towards higher brightness, higher weatherability, higher luminous density, higher luminous uniformity, reliability, and full color development.
LED display classification 1, according to the color base color can be divided into:
Single-color display: Single color (red or green).
Dual-color display: Red and green dual-color, 256 grayscale, can display 65536 kinds of colors.
Full-color display: Red, green and blue three-color, 256 grayscale full-color display can display more than 16 million colors.
2, according to the display device classification:
LED digital display: The display device is a 7-segment digital tube that is suitable for making clock screens, interest rate screens, and digital display screens.
LED dot-matrix graphic display: The display device is a dot-matrix display module composed of many uniformly arranged light-emitting diodes, suitable for playing text and image information.
3, according to use situation classification:
Indoor display: light point is small, generally Φ3mm - Φ8mm, display area is generally several to ten square meters.
Outdoor display: The area is generally several tens of square meters to several hundred square meters, high brightness, can work in the sun, with wind, rain, waterproof function.
4, according to the luminous point diameter classification:
Indoor screen: Φ3mm, Φ3.75mm, Φ5mm,
Outdoor screen: Φ10mm, Φ12mm, Φ16mm, Φ19mm, Φ21mm, Φ26mm
The basic unit of the outdoor screen light is the light emitting tube. The principle of the light emitting tube is to seal a group of red, green and blue light emitting diodes together in a plastic tube to enhance the brightness.
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