The quality of an LED display screen is primarily determined by the following core factors:
LED Chip Quality: Core materials (Nichia/Cree, etc.), packaging technology (SMD/COB technology), and resistance to degradation (attenuation rate <5% after 5000 hours) directly determine brightness and lifespan.
Brightness and Uniformity: Outdoor screens require 5000-8000 nits of high brightness, indoor screens 1200-2000 nits, with a brightness difference of ≤5% across the entire screen; white balance color difference ΔE <3.
Display Performance: Contrast ratio (≥3000:1), refresh rate (≥3840Hz to avoid moiré patterns in photos), grayscale level (16bit > 14bit), color gamut coverage (NTSC 90% or higher).
Protection Performance: IP65 waterproof (outdoor), salt spray resistant/high temperature resistant (-30℃~60℃), flame-retardant materials (UL94 V-0 certification).
Control System: Driver IC (Macrochip/Mingmicro mainstream solutions), dead LED rate (<1 per 100,000 pixels), support for HDR/high dynamic range compensation and other algorithm optimizations.
The heat dissipation design features a die-cast aluminum enclosure (superior to sheet metal enclosure), a thermal resistance of <5℃/W, and a module temperature difference of <8℃, ensuring a lifespan of 50,000 hours.
The manufacturing process adheres to standards of flatness (joint seams ≤0.1mm), anti-moiré pattern design on the faceplate, and point-by-point calibration (brightness/color compensation data is written to the IC).