What Does Led Display Mean

LED display is a display that uses light-emitting diodes, also known as "LED panel",  which is widely used in information release, outdoor media, stadiums, and indoor large-scale display solutions. It is also common in outdoor traffic signs or public transportation signs.

LED dot matrix display in the train carriage of MTR Light Rail Phase 24-bit multiplexing, seven-segment digital tube with 12 pins. Most of the outdoor and some indoor displays are composed of multiple light-emitting diodes in discrete packaging, and the light-emitting diodes of red, green and blue colors form a set of square modules, which form full-color pixels under the coordinated drive, and the resolution is determined by the distance between the center points between the pixels. The world's largest light-emitting diode display is over 1,500 feet long and is located at the Fremont Street Light Show in Las Vegas, Nevada, USA. Most indoor displays use surface-mount SMT surface-mount technology LED components (but there is a trend to extend to the outdoor market). Each SMD pixel module contains multiple red, green, and blue diodes in a package, which are then soldered to the PCB board. Diodes smaller than needles are lined up very close together. This display has better color consistency and reduces the minimum pixel distance by about 25% compared to displays made of discretely packaged light-emitting diodes.

LED displays used indoors generally have at least 600 cd/m2 (candela/m², nits) brightness, which is sufficient for use in companies and retail stores, but in brighter environments, higher screen brightness may be required, such as fashion and automotive exhibitions, and stage lighting may need to be further improved. Relatively. Video images require lower brightness and color temperature, but the color temperature of general LED displays is 6500-9000K, which is much higher than the needs of video images. For outdoor use, 5000 nits is usually required, but in places with direct sunlight, a light intensity of 8000 nits may be required.

Unlike ordinary and common consumer and commercial display equipment (LCD, PDP, DLP, etc.), "light-emitting diode displays" belong to industrial-grade equipment, and the vast majority of "light-emitting diode displays" have been completed as engineering projects. Ordinary and common display equipment is mostly used in indoor environments, with low brightness, poor weather resistance, and short life. The brightness of the "LED display" can even reach more than 10,000 nits, which can be completely waterproof, smoke-proof, and dust-proof, making it suitable for outdoor environments. At the same time, since the lifespan of the light-emitting diode can reach 100,000 hours, the lifespan is much higher than that of ordinary common display equipment. This is why "LED displays" are widely used in the field of traffic indication and public transportation signage.

 

From the perspective of the principle of light emission, each pixel of the "LED display" is an independent LED device, which is arranged and soldered to the front PCB board of the product in a specific way, and controls the brightness, travel pattern, signal or image of each LED through a series of integrated circuits and control systems. All pixels are actively illuminated LED devices. Ordinary display devices are usually projected to a certain type of panel by the backlight, and the special structure of the panel realizes different degrees and ways of light leakage to display the image. Although PDP is active lighting, it is produced and sold as a standard product in small-area panels.