Light Guide Plate

A Light Guide Plate (LGP) is a sophisticated piece of optical-grade acrylic (PMMA) that forms the backbone of modern edge-lit backlighting units. Its primary function is to take light from LEDs placed along its edges and distribute it uniformly across the entire surface of the plate. This process is critical for achieving the slim profiles seen in today's televisions, monitors, and advertising lightboxes. The magic lies in the meticulously engineered pattern on the LGP's surface, which can be created using methods like V-cutting, chemical etching, or, most commonly, high-precision laser dotting. Each dot or line in the pattern acts as a tiny reflector, redirecting the light traveling horizontally through the plate upwards, towards the viewer. The density and size of these patterns are carefully calculated—denser and larger further away from the light source—to compensate for light attenuation and guarantee a flawlessly even illumination without any dark spots or "hot spots." At TECHWON, we source LGPs that are manufactured to the highest tolerances, ensuring optimal light transmission and uniformity. Our supply chain focuses on partners who utilize top-tier PMMA material, which prevents yellowing over time, and advanced laser-etching technology for consistent performance. This commitment to quality means our clients can build display and lighting products that are not only aesthetically pleasing due to their thinness but are also brighter and more energy-efficient, delivering a superior end-user experience.