Edge-lit and back-lit light boxes look nearly identical from the front but differ in construction, thickness, light distribution quality, and cost. This is one of the most technically important distinctions in LED display purchasing and one that is frequently glossed over in product listings.
Edge-lit LED light boxes
LEDs are mounted along one or more edges of the frame rather than behind the display surface. Light enters the edge of a light guide panel (a specially designed acrylic sheet) and is redirected forward through a diffusion layer. The result is a very thin frame, often 15 to 35mm deep, with even light distribution. The LED Bench Light Box uses this construction method for its slim counter-ready profile.
Extremely slim profile suitable for wall mounting and counter displays where depth is a constraint. Lower heat generation because LEDs are positioned away from the centre of the panel. Generally lower cost than back-lit equivalents at equivalent size.
Back-lit LED light boxes
LEDs are distributed across the entire back surface of the unit behind the diffusion layer. Every point on the display face has LEDs directly behind it, which produces perfectly uniform illumination with no variation.
Superior uniformity at large formats. Better suited for photographic or gradient-heavy graphics where inconsistency would be visible. Higher maximum brightness output. Significantly deeper unit construction, typically 80 to 150mm deep for commercial-grade units.
For most retail, hospitality, and event display applications up to A1 format, edge-lit panels are the practical and cost-effective choice. Boardsy can advise on which format is appropriate for your specific graphic content and installation environment. Browse the LED Cube Light Box and LED Bench Light Box ranges or contact the team with your requirements.