GOB stands for Glue on Board. It is a surface protection process applied to SMD LED modules, in which a transparent epoxy resin is poured over the entire face of the module, filling the gaps between individual LED lamps and creating a smooth, sealed surface.
The result is a screen that is significantly more resistant to physical impact, moisture, dust, and UV exposure than a standard SMD panel. GOB is particularly valuable in environments where the screen may be touched or bumped — retail installations, immersive spaces, floor screens, and frequently handled rental equipment. The resin does not meaningfully affect brightness or colour. One consideration is that front-of-screen repairs become more complex, as the resin must be removed to access individual LEDs. For most permanent installations this is a worthwhile trade-off.