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Revolutionizing Through-Hole LED Displays: Precision Engineering Boosts Image Quality and Stability
Release time:
Sep 17,2025
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With the escalating demand for ‘high brightness and high durability’ in display screens for outdoor advertising and major sporting events, the production of through-hole LED displays has achieved a technological breakthrough.
Against the backdrop of outdoor display requirements evolving from mere ‘visibility’ to ‘clear, enduring visibility’, traditional through-hole LED displays struggle to meet market demands due to insufficient LED brightness and poor waterproofing. Today, manufacturing processes have achieved comprehensive performance enhancements through multi-dimensional technological innovation.
The core breakthrough in production manifests primarily in optimised LED packaging techniques. Traditional through-hole LEDs predominantly employed single-layer epoxy resin encapsulation, resulting in rapid brightness decay and weak UV resistance, frequently leading to ‘dead pixels’ during prolonged outdoor use. The industry now widely adopts a ‘dual-layer encapsulation process’: an inner layer of high-transmittance silicone (98% light transmission) ensures LED brightness (achieving 8000-10000 cd/m²), An outer layer of UV-resistant epoxy resin coating shields against intense outdoor ultraviolet radiation, reducing annual brightness decay from the conventional 10% to below 3% and extending service life to 5-8 years. To achieve this process, fully automated dispensing machines have been introduced in production. A precision adhesive control system (±0.01mm tolerance) ensures uniform coating thickness, eliminating brightness variations caused by uneven application.
Revolutionising PCB board soldering techniques is pivotal to enhancing display stability. Traditional manual soldering frequently resulted in cold solder joints or missed soldering points, causing localised screen blackouts. Production now fully employs a combined SMT (Surface Mount Technology) and wave soldering process. SMT precisely positions components like driver chips onto the PCB board, followed by wave soldering to achieve seamless bonding between LED chips and the PCB. This has elevated soldering yield rates from the conventional 95% to 99.8%. Concurrently, the PCB material has been upgraded to glass fibre-reinforced copper-clad laminate, significantly enhancing high-temperature resistance (withstanding up to 120°C) and corrosion resistance. This ensures the PCB remains stable and free from deformation or circuit oxidation even in outdoor environments characterised by high temperatures and humidity, guaranteeing consistent display performance.
Enhanced waterproof and dustproof structural design further adapts to outdoor scenarios. During production, display modules employ a ‘fully sealed splicing’ design, with waterproof silicone strips filling gaps between modules and waterproof gaskets fitted to frames. This achieves an overall IP65 protection rating, withstanding heavy rain, sandstorms, and other adverse weather conditions. To address significant outdoor temperature fluctuations, the equipment incorporates an integrated temperature control system. When the display temperature exceeds 45°C, cooling fans automatically activate; when temperatures drop below -10°C, heating modules engage, ensuring normal operation within the -30°C to 60°C temperature range. Furthermore, the production process prioritises lightweight design by replacing traditional steel frames with aluminium alloy, reducing the display's weight by 30%. This facilitates installation while minimising load-bearing pressure on mounting structures.
With continuous advancements in manufacturing technology, through-hole LED displays are emerging as the preferred solution for outdoor advertising screens, stadium scoreboards, and traffic guidance displays. They deliver high-definition, stable, and enduring visual experiences for users.
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