Abbreviation for ED light emitting diode. In PN junction of some semiconductor materials, when a few carriers are injected and most carriers are combined, the excess energy will be released in the form of light, thus converting electric energy directly into light energy. Pnjunction and reverse voltage make it difficult for a few carriers to inject, so it does not emit light. The diode made by the principle of injection electroluminescence is called led, which is commonly called led.
Because the LED lamp box has low working voltage (only 1.5-3V), it can be active and has certain brightness, and the brightness can be adjusted by voltage (or current), and it is also resistant to shock, vibration and long life (100000 hours). Therefore, there is no other display mode in large display equipment that is comparable to LED display mode. The display screen made by putting red and green LED as a pixel is called double base color screen or pseudo color screen; The display screen which put the red, green and blue LED lamp box tubes together as a pixel is called three basic color screen or full color screen. The pixel size of indoor LED screen is generally 2-10 mm. It is often used to package several LED tube cores that can produce different basic colors. The pixel size of outdoor LED screen is 12-26 mm, each pixel is composed of several monochromatic LED. The common product is called pixel barrel or pixel module.
Because the LED lamp box has low working voltage (only 1.5-3V), it can be active and has certain brightness, and the brightness can be adjusted by voltage (or current), and it is also resistant to shock, vibration and long life (100000 hours). Therefore, there is no other display mode in large display equipment that is comparable to LED display mode. The display screen made by putting red and green LED as a pixel is called double base color screen or pseudo color screen; The display screen which put the red, green and blue LED lamp box tubes together as a pixel is called three basic color screen or full color screen. The pixel size of indoor LED screen is generally 2-10 mm. It is often used to package several LED tube cores that can produce different basic colors. The pixel size of outdoor LED screen is 12-26 mm, each pixel is composed of several monochromatic LED. The common product is called pixel barrel or pixel module.
