COB vs SMD LED: Technical Comparison and Installation Guidance for Fine-Pitch Displays

Chip-on-Board (COB) and Surface-Mount Device (SMD) packaging determine an LED wall's ruggedness, viewing angle, peak brightness, serviceability and long-term cost. This page explains how each is built, where each technology outperforms the other, the practical trade-offs for installation and maintenance, and the key supplier questions you must ask. How They Are Built SMD: each pixel is a small three-in-one package (RGB dies inside a 0.6–2.0 mm plastic carrier with a clear lens) reflow-soldered t