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Creative & Custom LED Displays Are you looking for a commercial LED poster? Do you know the difference between GOB and COB LED display posters? How to choose? Next, Doitvision will introduce the details.
What is a COB LED poster?
Compared with traditional LED posters, COB LED posters are display devices that use COB packaging technology. The core is to directly integrate multiple LED chips onto the circuit substrate through semiconductor technology, and cover them with fluorescent glue to form a light-emitting surface.
Compared with traditional SMD technology, COB eliminates the packaging and reflow soldering of single lamp beads, and achieves seamless splicing through full board lamination. This technology allows the LED pixel pitch to be reduced to less than P0.9. Within a distance of 1 meter, you can hardly see the lamp beads, so they are particularly suitable for high-end commercial scenes viewed at close range.
Advantages
- High-definition display: small dot pitch, more delicate and clear images.
- High contrast: brighter picture colors, strong visual impact.
- Energy saving and power saving: lower power consumption and lower operating costs.
- Ultra-wide viewing angle: consistent viewing effect from all angles.
- Lightweight and integrated: simple structure, small footprint, easy installation.
- Convenient maintenance: supports front maintenance, high maintenance efficiency.
- Long life: low light decay, service life of up to tens of thousands of hours.
Application scenarios
- 4K image wall of luxury stores
- Smart interactive screen in corporate headquarters conference room
- Museum information screen, etc.
What is GOB LED poster?
GOB LED poster is a protective LED display screen improved on the basis of SMD. They form a protective layer by pouring special optical glue (refractive index 1.53-1.58) on the surface of LED module.
This modified epoxy resin glue is about 2mm thick and forms a transparent hard protective shell after curing, which not only maintains light transmittance but also enhances structural strength.
GOB technology mainly solves the problem,such as:
- traditional indoor and outdoor screens are susceptible to moisture and poor anti-collision.
- They are particularly suitable for advertising display in harsh environments.
Advantages
- Super strong protection: GOB packaging technology reinforces the surface, with waterproof, dustproof, anti-collision, anti-static and other properties.
- Strong durability: strong pressure resistance, not easy to damage the lamp beads, suitable for high-frequency touch scenes in public places.
- Ultra-high contrast: The screen is encapsulated in black, the picture is deeper and the color is fuller.
- Moisture-proof and anti-corrosion: Adapt to hot and humid or harsh environments, and extend service life.
- Fine picture quality: Support small pitch and high density, the picture is clearer and more detailed.
- Wide viewing angle display: No color cast when viewed from multiple angles, suitable for crowded areas.
- Convenient maintenance: Support front maintenance structure, saving maintenance space and time.
- Wide applicability: Suitable for shopping malls, airports, exhibition halls, bus stations and other scenes.
Application scenarios
- Shopping mall guide and advertising screen: Suitable for high-traffic areas, anti-collision and dustproof, high touch safety.
- Airport/high-speed rail station information display screen: Long-term operation, high brightness requirements, good pressure resistance and moisture resistance.
- Exhibition hall/museum interactive screen: Fine picture, protect the audience’s eyes.
- Outdoor small advertising screen: Strong waterproof and dustproof ability, adapt to changing weather environment.
- Bus station/subway station billboard: Anti-fouling and durable, suitable for public places with frequent content changes.
- Branded store/chain store window advertising: strong visual appeal, rich colors, enhance brand image.
Comparison between COB and GOB posters:
Protective performance
Because GOB posters have a completely epoxy resin package, their protective performance is significantly better than COB. It is more moisture-proof, dust-proof, and collision-proof, and is suitable for extreme environments.
Display effect
Because COB posters have smaller chip spacing and more uniform light distribution, their picture fineness is far superior to GOB. Its high contrast and wide viewing angle characteristics are particularly suitable for close-up viewing or high-end display needs. Although GOB posters can also meet visual needs, they are slightly inferior in pixel density and color reproduction, and may have a slight “graininess”.
Maintenance cost
GOB posters support individual replacement of lamp beads, and the maintenance cost is low. However, COB posters are closely integrated with the chip and PCB board, and local damage requires the overall replacement of the module, which has a higher maintenance cost. However, COB’s longer overall life can reduce the frequency of replacement, and the long-term comprehensive cost may be lower.
Applications
COB posters are particularly suitable for high-end scenes, such as high-end conference rooms, exhibition halls and other places. In other words, it is a place where you have extremely high requirements for image quality, stability and service life.
GOB posters are more suitable for commercial and public areas, such as shopping malls, bus stations, subway entrances, specialty stores and other places. These place are high frequency touch and exposure to complex environments. It has good anti-impact ability, can effectively prevent human damage, and is more cost-effective.
| Dimension | COB (Chip on Board) | GOB (Glue on Board) |
|---|---|---|
| Protection | No exposed solder points; stronger against impact and moisture | Depends on glue layer; may degrade over time |
| Display Quality | Seamless display, high contrast, wide viewing angle | Slight light scattering, narrower viewing angle |
| Cost | High initial cost, low maintenance cost | Lower initial cost, potential cost for glue replacement |
| Application | Indoor high-definition display (malls, exhibition halls) | Outdoor/semi-outdoor environments (stations, parking lots) |
| Maintenance Difficulty | Modules can be locally replaced | Modules can be locally replaced |
Related：
What are GOB LED Display and COB LED Display?
How much do COB and GOB posters cost?
COB and GOB are two different LED packaging processes, both of which can be used for posters. But their prices are very different.
In terms of price per square meter, the price of COB poster is usually around $1,499–$3,000 per SQM. This price applies to various fine pitch (0.93–1.8 mm) models such as P0.93, P1.25, P1.56, and P1.80.
due to the additional adhesive layer, GOB posters price ranges from $1,500–$2,200 for fine pitch 1.25mm to $1,000–$1,800 for 2.5mm.
In general, COB posters have higher pixel density and more delicate lake surface. the cost of the whole machine is around $1,500~1,800/m².
GOB posters have an additional adhesive layer protection. It can be used indoors or outdoors. The price range is wide ($1,800–4,000/m²), especially when the pitch is greater than 1.5 mm.
Doitvision COB/GOB poster solutions
COB LED Poster Display:
DOIT VISION’s COB LED Poster is a premium, high-definition display solution. They are designed for vibrant visuals, seamless splicing, and robust performance. Whether for indoor retail, exhibitions, or high-end commercial environments, this poster brings clarity and flexibility together in one sleek package.
Key Features
Visual Size & Seamless Splicing
With pixel pitches as fine as P1.56mm and P1.8mm, our COB Posters can be spliced seamlessly to create standard resolution displays:
- 6 units of P1.8mm = Standard 2K resolution
- 5 units of P1.56mm = Standard 2K resolution
- Can be cascaded to FHD, 4K, or even 8K setups
Wide Color Gamut
Enjoy more realistic and vivid graphics. With wide color space and advanced color calibration, Our COB Posters deliver natural skin tones and accurate surrounding colors.
Water-Proof & Durable Surface
Featuring an IP54-rated surface, Our COB Posters are highly resistant to water and impact. Unlike traditional SMD displays, the screen surface can be wiped with a damp cloth, making it ideal for long-term use in semi-public spaces.
Cloud Control System
Supports both synchronous and asynchronous control. You can update Content in real-time from multiple devices (iPad, smartphone, notebook) via USB or Wi-Fi. Compatible with iOS and Android, and supports built-in media playback for videos and images in all major formats.
Portable Design
Equipped with rolling castors, Our COB Poster can stand alone or be moved effortlessly. Lockable wheels ensure stable placement once positioned, making it both mobile and practical for flexible installation scenarios.
In addition.Doitvision also provides one-stop customized COB or GOB poster solutions. Our services cover the entire process from design, production to installation:
- Customized packaging process: optimize LED packaging materials according to customer needs to improve display effects and protection performance.
- Intelligent heat dissipation system: extend the life of the equipment through efficient heat dissipation design, allowing the poster to operate stably for a long time.
- Seamless splicing technology: achieve zero-gap splicing between screens to create an immersive visual experience.
- Remote management system: support content updates and reduce operation and maintenance costs.
Our LED poster solutions have been successfully applied to many high-end commercial projects, such as:
- flagship store of an international brand
- interactive display wall of an art museum.
Related:
Conclusion
COB and GOB LED posters have their own advantages and disadvantages. You need to consider the project requirements when choosing. COB LED posters have excellent display effects and long life, making them the first choice for high-end commercial displays; GOB posters are more suitable for outdoor advertising and high-traffic places with their high cost-effectiveness, anti-collision and moisture-proof advantages.
As a top LED screen manufacturer, Doitvision can provide customized services for different scenarios. If you need these two posters, you can contact us at will.