LED screens, at their core, are visual display systems that leverage light-emitting diodes as the primary light source, offering superior brightness, durability, and energy efficiency compared to traditional display technologies. Composed of modular LED panels, these screens can be scaled to various sizes—from small portable units to massive stadium installations. Key technical parameters include pixel pitch (determining resolution), brightness (nits), contrast ratio, and color gamut (supporting up to 16.7 million colors). Indoor LED screens prioritize fine-pitch clarity and low heat emission, while outdoor variants feature rugged weatherproofing (IP65+ ratings) and high brightness (5000+ nits) for sunlight visibility. Advanced LED screens incorporate features like HDR, high refresh rates (1920Hz+), and adaptive brightness sensors, ensuring optimal performance across diverse applications from advertising to entertainment.