LED THT Display The Cutting-Edge Technology of Through-Hole Design
Publish Time: 2025-11-04
In today's flourishing LED display technology landscape, surface mount technology (SMD) and Mini/Micro LED packaging are attracting significant attention. However, as a "veteran" technology in the LED display industry, LED THT display has not faded into history. Instead, it continues to shine in specific application scenarios thanks to its unique structural advantages and superior reliability. Its "through-hole" physical structure achieves the ultimate pursuit of visual penetration, environmental adaptability, and long-term stability.1. Through-Hole Structure: Robust and Reliable, Enduringly RenewableLED THT displays employ a process where LED leads pass through the PCB board and are soldered in place, forming a robust mechanical connection. Compared to SMD devices that rely solely on solder joints to adhere to the board surface, the THT structure offers stronger resistance to vibration and impact. This characteristic allows it to perform exceptionally well in outdoor environments with high wind pressure, extreme temperature differences, or mechanical vibrations—whether it's highway information boards, stadium scoreboards, or industrial control panels, THT screens can operate stably for years or even more than a decade under harsh conditions. Its "penetrating" installation method not only enhances the overall structural strength but also significantly reduces the risk of pixel failure due to poor soldering or desoldering.2. High Brightness and Wide Viewing Angle: A Visual Powerhouse Through Strong LightTHT LEDs typically use a hat-shaped or elliptical package, combined with high-power chips, to achieve ultra-high brightness of over 8000 nits. This brightness level is sufficient for clear visibility even under direct midday sunlight, a necessity for outdoor information display. Simultaneously, its unique lens design provides a wider horizontal and vertical viewing angle, ensuring consistent color and uniform brightness when viewed from different angles. This "penetrating vision" capability makes THT displays an ideal choice for open public spaces such as airports, train stations, and plazas, ensuring clear visibility of information even from a distance or at an angle.3. Excellent Heat Dissipation and Ultra-Long LifespanBecause the pins of THT LEDs directly penetrate the PCB and connect to a large area of copper foil, heat can be efficiently conducted to the backplane or heat dissipation structure through the pins, forming a natural heat channel. Compared to SMD devices where heat is concentrated at the surface solder joints, the THT structure effectively reduces the LED junction temperature, slowing down the light decay process. With proper design, THT displays can theoretically last for over 100,000 hours, with gradual brightness decay throughout their lifespan and extremely low maintenance costs. This advantage is particularly pronounced in critical scenarios requiring 24/7 continuous operation.4. Modular Design, Convenient MaintenanceTHT displays generally employ a standardized modular design, with individual LEDs independently installed. If a single LED fails, the entire module does not need to be replaced; simply remove the faulty LED and insert a new one for repair. This "plug-and-play" maintenance method significantly reduces downtime and operational complexity. Especially in display systems deployed at high altitudes or in remote areas, rapid on-site repair capabilities are crucial, and THT technology provides a natural advantage in this regard.5. Irreplaceable in Application ScenariosAlthough THT is gradually being replaced by SMD in the high-definition indoor display field due to pixel density limitations, it still dominates in outdoor large screens, strip screens, irregularly shaped screens, and special industrial displays with pixel pitches of P10 and above. Its high reliability, strong environmental adaptability, and economy enable it to continue playing an irreplaceable role in smart cities, traffic management, energy and power, and military command. In recent years, some manufacturers have further expanded its application boundaries in extreme environments such as coastal areas, plateaus, and deserts by optimizing packaging processes and optical designs to launch special THT screens with high protection levels, salt spray resistance, and UV resistance.While LED THT displays may no longer represent the "cutting-edge" packaging trend, their "through-hole" structural philosophy embodies the essence of engineering design: in complex environments, reliability is more important than sophistication, and stability is more enduring than flashy technology. With its brightness that penetrates strong light, its resilience against wind and rain, and its lifespan exceeding ten years, it silently safeguards the information network of cities. In the long river of display technology evolution, THT is not an outdated relic, but a pragmatic paradigm that remains sharp and effective after being tempered and refined.
