SMD vs GOB

Structural Design Differences

• SMD: LED lamp beads are directly attached and fixed onto the PCB circuit board, adopting a fully exposed installation structure.

• GOB: Built on the basis of traditional SMD packaging, with an additional layer of transparent glue covering and sealing the lamp beads.

Protection Performance

• SMD: The bare LED beads have no protective layer, making them susceptible to dust accumulation, humid air erosion and external physical collision damage.

• GOB: The integrated transparent resin coating forms an all-round protective barrier, effectively resisting water infiltration, dust pollution and external mechanical damage.

Display Brightness

• SMD: Thanks to the exposed lamp bead design with no light-blocking layer, it delivers a relatively higher overall screen brightness.

• GOB: The surface resin coating will produce slight light refraction and attenuation, resulting in a minor reduction in display brightness compared with SMD screens.

Later Maintenance & Repair

• SMD: The independent exposed lamp bead structure allows targeted replacement and maintenance of single faulty LEDs, with low maintenance difficulty and cost.

• GOB: The sealed resin layer completely covers the lamp beads, making it difficult to access and replace individual faulty beads, which greatly increases the difficulty of subsequent maintenance.

Applicable Scenarios

• SMD: Ideal for indoor/outdoor display scenarios such as indoor fixed screens, monitoring control rooms and retail store display screens.

• GOB: More suitable for indoor display equipment, stage rental screens and public areas with large pedestrian flow and complex use environments.