Led Screen Display CHINA SUPPLIER

GOB LED Screen Display
GOB LED Display Technology | High Protection & High Brightness | Nano-Coating Sealing 

GOB (Glue on Board) is one of the most prominent innovations in the LED display industry in recent years. By injecting nano-grade optical glue between the PCB and LED beads, GOB technology significantly improves protection, surface consistency, and image clarity. It reduces failure risks caused by collision, humidity, or static electricity, making it ideal for outdoor advertising, stage rental, transportation signage, and commercial retail displays that demand long-term reliability and durability.

What Is GOB Technology? | Working Principle and Process

GOB is an enhanced packaging technique based on traditional SMD technology. It involves applying high-transparency, highly adhesive, and weather-resistant optical glue over the LED module surface to form a sealed, integrated protective film. This process boosts the display’s resistance to harsh environments and ensures long-term performance stability.

The GOB manufacturing process includes four key steps:

1. Material Selection

   High-transparency polyurethane (PU) or modified epoxy resin is selected, with light transmittance ≥95%, UV resistance, anti-yellowing, and stable operation from -40°C to +100°C.

2. Glue Dispensing

   Automated high-precision dispensing or spraying equipment fills all LED bead gaps with glue evenly, keeping flatness error within ±0.01 mm to avoid uneven light or blurred areas.

3. Curing Process

   UV or thermal curing (typically at 80–120°C) solidifies the glue into a durable and scratch-resistant protective layer.

4. Surface Treatment

   The surface may be matte, anti-glare, or glossy, depending on application needs, enhancing visual comfort while reducing blue light emission.

Key Advantages of GOB LED Display

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1. Ultimate Protection – “10 Resistances, 1 Reinforcement”

GOB displays offer some of the industry’s highest protection standards:

• Waterproof and Dustproof: IP68-level sealing for use in rain, fog, or dusty conditions.

• Anti-Collision: Reinforced gel coating resists up to 50N impact force, reducing LED bead detachment.

• Anti-Blue Light: The optical glue absorbs part of the blue light spectrum, protecting human eyes.

• Other protections: Corrosion-resistant, anti-salt spray, anti-static, anti-vibration, anti-scratch, and anti-aging for comprehensive outdoor durability.

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2. Superior Display Quality

• From Point to Surface Light: The glue diffuses light evenly, reducing moiré patterns.

• Improved Contrast and Uniformity: The black gel enhances black-level performance, increasing contrast by over 30%.

• Wider Viewing Angles: Up to 180° horizontally and vertically for a consistent view from all sides.

• High Flatness: Surface tolerance ≤±0.02 mm combined with precise module alignment eliminates visible seams or color gaps.

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3. Longer Service Life, Lower Maintenance

• GOB reduces dead pixel rate by 80% compared to standard SMD displays.

• Service life exceeds 100,000 hours under normal conditions.

• The glue layer can be removed for module repair and reapplied without affecting display quality.

• Supports hot-swappable modular maintenance, enabling rapid on-site repair.

Application Scenarios and Use Cases

1. Outdoor Stage & Event Rental

   Ideal for concerts, city events, and festivals, where frequent transport and setup require strong impact resistance and low failure rates.

2. Transportation Hubs

   Deployed in metro stations, airports, and high-speed rail hubs, GOB ensures 24/7 information display in humid or dusty environments.

3. Outdoor Advertising & 3D Billboards

   Used in building façades, landmark signage, and commercial displays. Its high protection and durability reduce maintenance and increase ad ROI.

4. Smart Retail & Interactive Displays

   GOB supports transparent screens, shaped modules, and floor displays in malls, blending creativity with rugged reliability.