What is DOB Floor Tile Screen Technology? What are its advantages?

3 views admin 2025-10-23

A DOB floor tile screen is an LED ground display device that utilizes Direct On Board technology, specifically an optical film internal colloid osmotic pressure technique. It involves directly packaging LED chips onto a PCB substrate and covering them with high-polymer nano-materials, achieving an integrated design with high protection, high reliability, and high display performance.

Innovative Packaging Technology The DOB process uses a self-developed silicone resin SPE material to completely encapsulate the LED chips and circuit components within a solid elastic colloid, forming a seamless protective layer. This design addresses the issue of moisture and dust ingress common in the gaps between traditional SMD packaged lamp beads. It achieves IP65-level waterproof and dustproof protection (with some high-end models reaching IP68), capable of withstanding rainwater冲刷 and routine cleaning.

Impact Resistance & Wear Resistance: The high-strength characteristics of the colloid allow the screen surface to withstand point loads exceeding 2 tons (e.g., vehicle). The surface features anti-slip and anti-glare matte treatment, making it suitable for high-footfall scenarios.

Aging Resistance & Stability: The material offers resistance to UV rays, yellowing, and salt spray corrosion. It operates stably within a wide temperature range of -20°C to 65°C, with a service life exceeding 100,000 hours – over 30% longer than traditional SMD screens.

High Heat Dissipation Efficiency: The combination of a copper substrate and silicone resin reduces thermal resistance. The junction temperature is 22°C lower compared to SMD packaging, minimizing chip light decay and ensuring long-term display consistency.

High Resolution & Fine Detail: Pixel pitches range from P1.95 to P6.25, with a maximum physical density of up to 262,144 pixels/㎡. It supports 4K ultra-high-definition display, capable of presenting realistic dynamic images and fine details.

High Contrast & Color Consistency: The uniform colloid coverage eliminates light spots and color cast. Combined with non-linear point-by-point correction technology, it achieves a high contrast ratio of over 5000:1, significantly enhancing the sense of image depth.

Modular Design & Rapid Maintenance: Utilizing magnetic absorption modules and front-maintenance structures, individual modules can be independently disassembled and replaced without removing adjacent cabinets, reducing maintenance time to one-third of that required for traditional screens. Some series (e.g., Dingli Display's KD series) incorporate dual backup design for both power supplies and control cards, enabling seamless switching during failures and minimizing downtime.

Convenient Installation & Flexible Layout: The lightweight design of the die-cast aluminum cabinets (single cabinet weighs only 11.5kg) supports rapid splicing and can adapt to curved, circular, and other special-shaped structures. Built-in spirit levels in the cabinets assist with calibration, achieving an installation precision of ±0.1mm, significantly reducing construction difficulty.

For frequently moved or temporarily installed scenarios, prioritize lightweight DOB modules (e.g., 500×500mm cabinets). For permanent installations, custom special-shaped structures can be ordered to match spatial design.

For outdoor scenarios, confirm whether the IP rating meets long-term waterproof requirements. Special attention to salt spray corrosion resistance is needed for coastal areas.

Request third-party test reports from suppliers (e.g., salt spray test, step load test data), focusing particularly on the brightness decay rate (≤15% @500 hours) and refresh rate (≥1920Hz).

Test the dynamic image response speed to ensure interaction latency is below 0.02 seconds, avoiding user-perceived lag.

Through material innovation and process optimization, DOB floor tile screens extend LED display technology from walls to floors, redefining spatial interaction methods. Their characteristics of high protection, high reliability, and high flexibility make them an ideal choice for commercial, cultural, and public domains. As the technology iterates and costs decrease, DOB floor tile screens are expected to replace traditional floor decoration materials in more scenarios, becoming a core component in digital space construction.