GOB LED (Glue on Board) is a protective coating technology applied to standard SMD LED modules. A layer of transparent epoxy resin is added over the LED chips, making the screen:
✅ Waterproof – resistant to rain, moisture, and spills
✅ Impact-resistant – can withstand bumps and physical contact
✅ Dust-proof – sealed surface prevents dust ingress
✅ Easy to clean – smooth surface, no crevices
Best for: Outdoor billboards, rental screens, floor displays, and any application where screens face physical contact or weather exposure.
What Is GOB LED?
GOB stands for Glue on Board. It is a packaging technology where a transparent epoxy resin is applied over standard SMD LED modules.
How it works:
| Step | Process |
| 1 | Standard SMD LEDs are mounted on the PCB |
| 2 | A transparent epoxy or silicone glue is applied over the entire module |
| 3 | The glue is cured (hardened) to form a protective layer |
| 4 | The result is a sealed, durable LED module |
The key innovation: Unlike SMD LEDs where the chips are exposed, GOB LEDs are fully encapsulated. This protection layer does not affect brightness or color because the material is transparent.
GOB vs SMD: The Core Difference
| Feature | SMD LED | GOB LED |
| Protection layer | None – chips exposed | Epoxy resin coating |
| Waterproof | No | Yes (IP65 capable) |
| Impact resistance | Low – easily damaged | High – withstands bumps |
| Dust proof | No – dust can enter gaps | Yes – sealed surface |
| Cleaning | Difficult (can damage chips) | Easy (smooth surface) |
| Best for | Indoor controlled environments | Outdoor, high-traffic, rental |
The bottom line: GOB takes a standard SMD module and makes it durable. If you need a screen that can survive outdoor conditions or physical contact, GOB is the answer.
GOB vs COB: What Is the Difference?
| Feature | COB LED | GOB LED |
| Structure | LED chips mounted directly on PCB, then encapsulated | SMD LEDs pre-packaged, then glued as a module |
| Protection | Good | Excellent (thicker glue layer) |
| Repairability | Difficult – entire module replacement | Easier – individual SMD components can be accessed |
| Cost | Higher | Lower to moderate |
| Best for | Fine pitch indoor, high-end displays | Outdoor, rental, floor displays |
Simple rule:
Need ultra-fine pitch (P1.2-P1.9) for close viewing? Choose COB
Need durability for outdoor or high-traffic use? Choose GOB
Key Benefits of GOB LED
1. Waterproof (IP65 Capable)
The epoxy resin coating seals the entire module. Water, rain, and moisture cannot reach the LED chips or circuits.
Best for: Outdoor billboards, digital signage in humid climates, poolside displays
2. Impact-Resistant
GOB LED screens can withstand physical bumps, kicks, and accidental contact. The glue layer absorbs shock.
Best for: Floor displays, rental screens (frequent transport), interactive walls, children’s museums
3. Dust-Proof
The smooth, sealed surface leaves no gaps for dust to enter. No more cleaning dust from between pixels.
Best for: Industrial environments, construction site signage, dusty outdoor locations
4. Easy to Clean
Unlike SMD screens where aggressive cleaning can damage chips, GOB screens have a smooth surface. Wipe with a soft cloth – no special precautions needed.
Best for: Rental screens (cleaned after every use), food service displays, public information kiosks
5. UV Resistant
The epoxy coating protects against UV damage – colors stay vibrant longer, even in direct sunlight.
Best for: Outdoor advertising in sunny climates
6. Anti-Static Protection
The coating prevents static electricity buildup, protecting sensitive LED components.
GOB LED Packaging Process (Simplified)
| Step | What happens |
| 1. Prepare PCB | Select high-thermal-conductivity board (aluminum or FR4) |
| 2. Mount SMD LEDs | Standard SMD LEDs are mounted on the PCB |
| 3. Apply glue | Transparent epoxy resin is evenly applied over the module |
| 4. De-bubble | Vacuum chamber removes trapped air bubbles |
| 5. Cure | Heat or UV light hardens the glue into a protective layer |
| 6. Test | Luminance, thermal, and function tests verify quality |
The result: An SMD LED module that is now waterproof, impact-resistant, and dust-proof.
Common Applications of GOB LED
| Application | Why GOB is ideal |
| Outdoor billboards | Waterproof, UV resistant, dust-proof |
| Rental LED displays | Impact-resistant during transport, easy to clean |
| Floor LED displays | Can withstand foot traffic and impacts |
| Stage backdrops | Durable for touring productions |
| Shelf displays (retail) | Impact-resistant from shoppers |
| Interactive walls | Can be touched without damage |
| Transparent LED screens | Coating adds durability without blocking light |
| Flexible LED displays | Glue layer adds protection without reducing flexibility |
| Public information kiosks | Dust-proof, vandal-resistant |
Maintenance Tips for GOB LED Displays
| Task | Frequency | How to do it |
| Clean the surface | Weekly | Soft microfiber cloth – dry or slightly damp |
| Check cable connections | Monthly | Ensure all cables are secure |
| Inspect for damage | Before/after each use (rental) | Look for cracks in the glue layer |
| Update software | As released | Install manufacturer updates |
| Store properly | When not in use | Cool, dry place – away from direct heat |
GOB advantage: The sealed surface makes cleaning much easier than SMD screens. No need to worry about damaging exposed chips.
Cost Considerations
| Factor | Impact on price |
| GOB vs SMD | GOB is more expensive (adds glue and curing process) |
| GOB vs COB | GOB is generally less expensive than COB |
| Pixel pitch | Smaller pitch = higher cost (more LEDs) |
| Size | Larger screen = higher total cost |
| Outdoor rating | Outdoor GOB screens cost more than indoor |
Estimated price range:
| Type | Price per sqm (USD) |
| Standard SMD indoor | 300–300–800 |
| GOB LED indoor | 500–500–1,000 |
| GOB LED outdoor | 700–700–1,500 |
| COB LED indoor | 1,000–1,000–3,000+ |
Note: GOB sits between SMD and COB in both price and protection level. It is more expensive than standard SMD but offers significantly better durability.
When to Choose GOB LED
| Choose GOB LED if… | Choose SMD if… | Choose COB if… |
| Outdoor installation | Indoor only | Fine pitch (under P2) needed |
| Screen will be touched | Budget is tight | Highest image quality needed |
| Frequent transport (rental) | Controlled environment | Close viewing distance |
| Dusty or humid location | Standard advertising | High-end corporate displays |
| Floor or interactive use | Single permanent installation | Broadcast or control rooms |
Ivan’s GOB LED Displays
At IvanLED, we manufacture GOB LED displays for demanding applications:
Outdoor billboards – Waterproof, UV resistant, high brightness
Rental LED screens – Impact-resistant, easy to clean
Floor LED displays – Withstands foot traffic
Interactive displays – Touch-safe, durable
What we offer:
Pixel pitches from P2.5 to P10
Indoor and outdoor ratings (IP65)
Custom sizes and shapes
Seamless splicing technology
1-year warranty
Shipping worldwide
Tell us your application – outdoor, rental, floor, or interactive. We will recommend the right GOB LED solution and provide a free quote.
Frequently Asked Questions
Q: Why should I choose GOB LED over standard SMD?
If your screen will be used outdoors, in high-traffic areas, or will be touched, choose GOB. The protective coating makes it waterproof, impact-resistant, and dust-proof. Standard SMD is fine for indoor, controlled environments but will fail outdoors or with physical contact.
Q: Can GOB LED displays be used outdoors?
Yes. GOB LED displays are designed for outdoor use. The epoxy coating provides IP65-level protection against rain, moisture, and dust. They are also UV resistant, so colors stay vibrant in direct sunlight.
Q: Is GOB LED better than COB LED?
Neither is universally “better.” GOB is more durable and cost-effective for outdoor, rental, and floor applications. COB offers finer pixel pitch (better for close viewing) and superior heat dissipation. Choose based on your application – GOB for durability, COB for ultra-fine pitch indoors.
Q: Do GOB LED displays overheat?
GOB LED displays have good heat dissipation. The glue layer is thermally conductive, allowing heat to escape. However, like all LED displays, proper ventilation is still required for long-term operation.
Q: How do I clean a GOB LED screen?
Cleaning is easy – simply wipe the surface with a soft microfiber cloth. For stubborn dirt, use a slightly damp cloth. Unlike SMD screens, you do not need to worry about damaging exposed chips. Never use harsh chemicals or abrasive materials.
Q: What is the warranty on IvanLED GOB displays?
1-year warranty against manufacturing defects. We also provide technical support and spare parts.
