What certifications do Gravix LED displays carry?

All Gravix products are certified to CE (Europe), FCC (North America), RoHS, and CCC (China). Selected Atlas outdoor models carry IP65 and wind-load documentation.

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Q: What is the difference between COB and SMD LED displays?

COB (Chip on Board) bonds LED chips directly to the PCB without individual packages, creating a seamless surface with no visible black mask between pixels. SMD uses packaged LED components creating visible pixel gaps. COB delivers superior contrast, impact resistance, and uniformity — the preferred technology for fine pitch indoor displays below P2.0.

Q: Which pixel pitch is right for my application?

Minimum viewing distance (meters) ≈ pixel pitch (mm) × 1.5–2. P0.9–P1.5 for boardrooms and studios (1.5–3m viewing), P2.6–P3.9 for event stages and retail (4–8m), P4.8–P6.25 for outdoor billboards and large venues (10m+).

Q: Do you offer OEM and ODM manufacturing services?

Yes. Gravix provides full OEM/ODM services including custom cabinet sizes, branded packaging, private-label firmware, and documentation in your company name. Our 100+ engineer R&D team can develop custom pixel pitches and integration solutions.

Q: What is the warranty and lead time?

All products include a 3-year manufacturer's warranty. Standard lead time is 15–20 business days for stock configurations. Rush orders available on select lines. Shipping: 3–7 days air, 20–35 days sea from Shenzhen.

COB (Chip-on-Board) LED displays deliver superior image quality for mission-critical environments through direct chip mounting that achieves ultra-fine pixel pitches as low as 0.4mm. This advanced packaging eliminates traditional LED brackets and wire bon

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Display COB P3.91 COB Transparent LED Screen | Ultra-Thin

NexusCOB Series

P3.91 COB Transparent LED Screen | Ultra-Thin

COB Transparent LED DisplayUltra-Transparent · Flexible · High-Performance

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Display COB P1.56 COB LED Poster Display | Foldable

Serie Lumina

P1.56 COB LED Poster Display | Foldable

This free standing COB LED poster delivers seamless Micro LED COB display performance with a P1.56 C

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Display COB High-End Micro LED Video Wall for Control Rooms & Boardrooms

Display a LED per sale riunioni

Videowall micro LED di alta gamma per sale di controllo e sale riunioni.

Scopri i nostri videowall Micro LED premium. Senza soluzione di continuità, ad alto contrasto, 7680Hz 1000nits e ultra-fini

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Gravix NexusCOB Fine Pitch LED Display — COB chip close-up

NexusCOB Series — Why COB?

What Is COB LED Technology and Why It Outperforms SMD?

COB (Chip on Board) bonds LED chips directly onto the PCB, eliminating the visible black mask between pixels that you see on traditional SMD displays. The result is a perfectly seamless, high-contrast surface that performs flawlessly at any viewing distance — without pixel grain, color shift, or surface reflections.

Pixel pitch as fine as P0.9 — broadcast-grade quality at arm's length
Impact-resistant sealed surface — IP54, nano resin coating
40% lower energy consumption than equivalent SMD displays
100,000-hour rated lifespan — lowest total cost of ownership

Explore NexusCOB Indoor Series

FAQ

LED Display Buying Guide

Common questions from AV integrators, event producers, and facility managers worldwide.

What is the difference between COB and SMD LED displays? +

COB (Chip on Board) bonds chips directly to the PCB — seamless surface, no black mask, impact-resistant. SMD uses packaged LEDs creating visible pixel gaps at close range. COB delivers contrast ≥10,000:1, uniformity ≥97%, and 100,000-hour lifespan. Best for fine pitch indoor use (P0.9–P1.8): studios, boardrooms, flagship retail.

Which pixel pitch is right for my application? +

A simple rule: minimum viewing distance (m) = pixel pitch (mm) × 1.5–2.

• P0.9–P1.5: Studios, control rooms, executive boardrooms (1.5–3m)
• P1.8–P2.6: Conference halls, retail flagships, trade shows (3–5m)
• P3.9–P4.8: Concert stages, arenas, sports events (6–10m)
• P6.25+: Outdoor billboards, highways, building facades (10m+)

Do you offer OEM and ODM manufacturing services? +

Yes. Gravix provides full OEM/ODM services: custom cabinet shapes and dimensions, branded packaging, private-label firmware, compliance documentation under your brand. Our factory R&D team (100+ engineers, 50+ patents) can also develop custom pixel pitches or deep system integrations for enterprise projects.

What certifications do Gravix products carry? +

All products are certified to CE, FCC, RoHS, and CCC. Atlas outdoor models include IP65 and wind-load test documentation. Full compliance packages are available for customs clearance, local authority approvals, and public tender submissions.

What is the warranty and lead time? +

All products include a 3-year manufacturer's warranty. Extended 5-year options available. Standard lead time: 15–20 business days for stock configurations; 20–30 days for custom. Shipping from Shenzhen: 3–7 days air freight, 20–35 days sea freight. We handle all export documentation.

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What Is COB LED Technology and Why It Outperforms SMD?

LED Display Buying Guide

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