LED chip array is a compact arrangement of multiple LED semiconductor chips on a substrate, designed for high-density illumination in decorative lighting applications.
An LED chip array consists of multiple individual LED semiconductor dies mounted on a common substrate, typically using surface-mount technology (SMT) or chip-on-board (COB) packaging. These arrays are engineered to provide uniform light distribution, precise color mixing, and efficient thermal management. In LED decorative lights, they serve as the primary light-emitting source, enabling complex lighting patterns, dynamic color changes, and energy-efficient illumination. The array configuration allows for controlled current distribution across chips, ensuring consistent brightness and color temperature while minimizing hotspots.
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SMT (Surface-Mount Technology) arrays have individual LED chips mounted separately on a PCB, allowing for modular replacement. COB (Chip-on-Board) arrays mount multiple chips directly onto a substrate, creating a single light source with better thermal performance and higher lumen density.
Arrays combine red, green, blue (RGB) or RGBW chips with precise spacing and driver control. Pulse-width modulation (PWM) adjusts intensity of each color channel, enabling millions of color combinations and dynamic lighting effects.
Heat sinks, thermal pads, and proper PCB design with copper layers are essential to dissipate heat, as excessive temperature reduces light output, shifts color, and shortens lifespan. Thermal resistance should be kept below 10°C/W.
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