Edge-lit vs back-lit describe where the LEDs are positioned inside the led lightbox. This single difference affects thickness, weight, light uniformity, and suitability for different display contexts.
Edge-Lit: What It Is and When to Use It
In an edge-lit lightbox, LEDs run along one or more edges of the unit. A light-guide plate distributes that light across the display surface. The result is a very slim profile, often under 30mm deep, and a lightweight unit that is easy to transport and install.
Edge-lit is the better choice when portability matters. Exhibition stand displays, pop-up lightboxes, and trade show counters all benefit from the reduced weight and compact depth. The trade-off is that very large edge-lit panels can show slight variation in brightness between the centre and edges when viewed up close. At normal viewing distances of two metres or more, this is rarely noticeable.
Back-Lit: What It Is and When to Use It
In a back-lit lightbox, LEDs sit directly behind the display surface, usually across a grid or panel. Light is diffused through a translucent material before reaching the face. This produces more even, saturated illumination across the entire display area.
Back-lit units are deeper and heavier than edge-lit equivalents. They are better suited to permanent or semi-permanent installations where transport is less frequent: retail displays, hospitality venues, and fixed signage applications. They also handle very detailed photography and complex graphics more cleanly because the even backlight leaves no gradient across the image.
Which Is Right for Your Application
For exhibitions, events, and anything that moves regularly: edge-lit. For a fixed branded display in a bar, restaurant, or retail unit: back-lit. For personalised table centres and decorative lightboxes: edge-lit is standard across the Boardsy range given the emphasis on portability and clean presentation.
Does It Affect Brightness
Both can achieve similar brightness output. What matters more is the quality of the LEDs and the driver powering them. A well-made edge-lit unit will be brighter vs a poorly made back-lit unit, and vice versa in a led lightbox.
> “For most event and exhibition applications, edge-lit is the right choice. Slim, lightweight, and professional. Back-lit earns its depth in permanent, high-detail display situations.”
See Boardsy’s range at boardsy.co.uk/shop/ to compare options for your specific use case. Learn about Best LED Lightboxes for Exhibitions and Trade Shows UK 2026.
Both constructions are available on products like our cube light box.