Perforated Light Guide Plate

A1: The substrate characteristics should be matched to the core requirements of the scenario: ① For general indoor scenarios (such as ordinary monitors and office flat panel lights), acrylic substrates are preferred, with a light transmittance of over 92%, moderate cost, and easy processing; ② For outdoor or high-impact scenarios (such as outdoor light boxes and automotive displays), PC substrates are preferred, with impact resistance 6-8 times that of acrylic, and resistance to high and low temperatures (-40℃ to 120℃); ③ For high-temperature and high-cleanliness scenarios (such as medical equipment and industrial testing instruments), glass substrates are preferred, as they are resistant to high temperatures (up to over 300℃), chemical corrosion, and their surface is less prone to dust accumulation, making cleaning and maintenance simpler.

A2: Light emission uniformity can be flexibly adjusted according to requirements, achieved through two main dimensions: ① Optimized aperture structure parameters: Aperture diameter near the light source can be set to 0.1-0.3mm, with an aperture spacing of 5-8mm; on the side farther from the light source, the aperture diameter increases to 0.5-0.8mm, and the aperture spacing decreases to 3-5mm, balancing light distribution through "smaller apertures sparsely spaced near the light source and larger apertures densely spaced far from the light source"; ② Auxiliary optical film combination: For ultra-high uniformity (such as in medical imaging displays), a double-layer diffusion film (80% and 90% haze respectively) can be superimposed on the front of the light guide plate, and a high-reflectivity (≥95%) silver film can be used on the back to further eliminate light differences, increasing uniformity to over 90%.

A3: For outdoor use, the key issues to address are UV resistance, waterproofing, and anti-aging. Specific solutions include: ① UV resistance treatment: Apply a 5-10μm UV-resistant coating (such as an acrylic coating containing nano-TiO₂) to the substrate surface, or directly use a special substrate with added UV-resistant agents. This can block more than 99% of ultraviolet rays, preventing the board from yellowing and becoming brittle; ② Waterproof sealing: Seal the edges of the light guide plate (using weather-resistant silicone sealant). When used with the backlight module, add a waterproof gasket to prevent rainwater from seeping into the holes and affecting optical performance; ③ Structural protection: Secure with an aluminum alloy frame with pre-drainage holes. Also, add a heat insulation layer to the back of the light guide plate to reduce the impact of high temperatures on the light source and light guide plate, extending its outdoor lifespan.

A4: "Light spots" are mostly caused by uneven light distribution or structural mismatch issues. Corresponding solutions: ① Light source issues: If the LED bead spacing is too large (>10mm), reduce the bead spacing to 5-8mm, or replace with LED beads with a larger beam angle (≥120°) to achieve more uniform light coverage; ② Hole structure issues: If light spots appear on the light source side, the hole diameter may be too large, requiring a reduction of 0.1-0.2mm in that area; if appearing in the middle area, increase the density of the hole arrangement; ③ Film material issues: If a diffusion film is not used or the diffusion film haze is too low, replace it with a high-haze diffusion film (haze ≥85%), or increase the number of diffusion film layers; ④ Installation issues: If the distance between the light guide plate and the light source...

A5: The surface hardness of the Perforated Light Guide Plate is related to the substrate. Acrylic substrates have lower surface hardness (Mohs hardness 2-3), making them easily scratched by sharp objects; PC substrates have slightly higher hardness (Mohs hardness 3-4), offering slightly better scratch resistance. During routine maintenance, avoid wiping the surface with hard cloths or sharp tools. When cleaning, it is recommended to use a soft, lint-free cloth dampened with a small amount of water or neutral detergent to gently wipe the surface. If high surface scratch resistance is required, a perforated light guide plate with a hardened surface can be selected. After hardening, the surface hardness can reach Mohs hardness level 5 or above, significantly improving scratch resistance.