In recent years, with the Beijing Olympic Games, the Shanghai World Expo, and the Guangzhou Asian Games, LED display screens can be seen everywhere. The LED display can display changing numbers, texts and graphic images; it can be used not only in indoor environments but also in outdoor environments, and has the advantages that projectors, TV walls, and liquid crystal displays cannot match.
LEDs are widely valued and rapidly developed, and are inextricably linked to their own advantages. These advantages are summarized as follows: high brightness, low operating voltage, low power consumption, miniaturization, long life, shock resistance and stable performance. LED's development prospects are extremely broad, and the established company Shanghai Xingma Electronics, as the industry leader, plays a key role in the early development of the industry. At present, LEDs are moving toward higher brightness, higher weather resistance, higher luminous density, higher uniformity of illumination, reliability, and full color.
First, the type of LED display:
1, according to color classification
Single primary color display: single red or single green; two-color display: red and green double primary colors, 256 levels of gray, can display 65,536 colors; full color display: red, green, blue three primary colors, 256 grayscale The full color display can display more than 16 million colors.
2, according to the composition of the pixel unit classification
Digital display: display pixel is a 7-segment digital tube, suitable for making clock screen, interest rate screen, etc.;
Graphic display: display pixel is a dot matrix module, suitable for playing text and image information;
Video display: The display pixel is composed of many light-emitting diodes, which can display various video files such as video and animation.
3, according to the use of location classification
Indoor display: small light-emitting point, dense pixel spacing, suitable for close-up viewing;
Semi-outdoor display: between indoors and outdoors, not rainproof, suitable for information guidance at the threshold;
Outdoor display: large luminous point, large pixel spacing, high brightness, can work in the sun, with wind, rain and water resistance, suitable for long distance viewing.
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