Cob LED Video Wall

This full flip‑chip COB MicroLED display combines direct chip‑on‑board packaging, die‑cast aluminium cabinet construction, and integrated driver boards into a single, slim‑profile solution. Designed with a 16:9 golden ratio, it delivers stunning visuals for home entertainment, professional presentations, and other demanding indoor applications. The ultra‑lightweight yet robust enclosure, together with excellent heat dissipation, ensures long‑term stability. For integrators and enterprises seeking a high‑quality indoor display with simplified maintenance and superior durability, this COB display sets a new benchmark.

Unlike traditional SMD (Surface‑Mounted Device) LED displays - which require separate brackets, epoxy, gold/copper wire bonding, solder paste, and reflow soldering - COB packaging directly integrates red, green, and blue LED chips onto the PCB and encapsulates them with a protective glue. This eliminates complex reflow processes, enables smaller pixel pitches (below P1.2), and improves mechanical stability. The result: higher reliability, lower long‑term cost, better impact resistance, and superior heat dissipation - all essential for 24/7 indoor operation.

When we first started developing this display, we had a simple goal: eliminate the frustrations that integrators and end‑users have lived with for years – fragile lamp beads that fall off during shipping, visible pixel gaps that ruin close‑up viewing, and the constant fear of burn‑in when displaying static content. After countless iterations in our Class 1000 cleanroom, we finally achieved what many thought impossible – a true chip‑on‑board MicroLED panel that is rugged, incredibly thin, and delivers a picture quality that makes LCD and even OLED feel like yesterday's technology.

This is not another SMD display with a fancy name. Traditional SMD LED screens use thousands of individual lamp beads, each soldered onto the PCB like tiny light bulbs. They are prone to falling off when touched or bumped – something every rental and fixed installation team knows all too well. And because each bead needs space for soldering, the pixel pitch cannot go below roughly P1.2. Our COB approach is fundamentally different: we take bare red, green, and blue MicroLED chips and bond them directly onto the PCB, then cover the entire surface with a seamless protective glue layer. The result? No exposed parts to knock off, pixel pitches down to P0.9 or even smaller, and a perfectly flat surface that you can wipe clean without fear.

One of our early adopters – a high‑end home theater integrator – told us after his first installation: "I used to budget three extra lamp beads per cabinet for on‑site replacement. With this COB display, I installed 50 cabinets in a weekend and didn't lose a single pixel." That kind of feedback is what drives us.

Our COB display modules deliver outstanding luminance and contrast for diverse indoor lighting conditions – from dimly lit home theaters to brightly illuminated retail showrooms. The full flip‑chip MicroLED design ensures high external quantum efficiency and uniform emission.

Technical Principle: Flip‑chip MicroLEDs are directly bonded to the PCB without wire bonds, reducing thermal resistance and improving light extraction. The COB encapsulation eliminates individual lens structures, providing a truly seamless image – critical for close‑up viewing in boardrooms and home theaters.

• Full Flip‑Chip COB MicroLED – No wire bonds, higher light extraction efficiency, and excellent thermal management.

• 100,000:1 native contrast – True blacks without blooming, thanks to per‑pixel emission.

• 3840Hz refresh rate – Eliminates flicker on camera and to the naked eye, ideal for broadcast and high‑speed action.

Energy efficiency matters in 24/7 indoor installations such as control rooms and digital signage. Our common‑cathode architecture drives red, green, and blue chips at their optimal voltages, reducing power consumption by approximately 30–40% compared to traditional common‑anode designs.

Typical Power Consumption (per m²):

• 800 nits: ~120 W
• 1,500 nits: ~210 W
• Standby: <5 W

Because the COB encapsulation fully covers the LED chips, the display is highly resistant to dust, moisture, and mechanical shock. No exposed lamp beads means no pixel loss from accidental collision during installation or transport. This COB display is engineered for 24/7 mission‑critical installations – control rooms, digital signage, and live event backdrops – with an expected L70 lifetime of 80,000+ hours.

Common Misconception Clarified: COB does not mean lower repairability. This display uses modular cabinet design and front‑service access for quick module replacement without on‑site soldering.

The cabinet integrates power supply, receiving card, and HUB board into a single slim enclosure. This reduces cabling complexity, improves reliability, and speeds up installation.

• Cabinet depth: as low as 38 mm (depending on pixel pitch)
• Weight: <5 kg per cabinet (600×337.5 mm)
• Magnetic attachment / tool‑free locking for fast stacking or wall mounting

This makes the COB display ideal for fast‑paced rental staging as well as permanent fixed installation.

We offer tailored solutions based on this COB platform:

• Pixel pitch options: P0.9, P1.2, P1.5, P1.9, P2.5 (indoor); P2.5, P3.9, P4.8 (outdoor)
• Cabinet shapes & sizes: standard 16:9 (600×337.5 mm) or custom‑size tiling
• Interfaces: HDMI, DVI, DP, 3G‑SDI, Ethernet (RJ45), optional wireless
• MOQ: 10–20 cabinets for prototypes; scalable to 500+ cabinets
• Lead time: 3–6 weeks for custom pixel pitch / IP ratings

Customization process:

1. Requirement consultation (indoor/outdoor, brightness, IP level)
2. Mechanical & thermal simulation
3. Prototype build (2–3 cabinets)
4. Certification & mass production

• Corporate boardrooms & meeting rooms – 16:9 native ratio, flicker‑free 4K/8K presentations.
• Home theaters & luxury residential – Ultra‑thin wall mounting, excellent black levels.
• Control rooms & command centers – 24/7 operation, no burn‑in, consistent uniformity.
• Retail flagship stores – High‑impact window displays with easy content switching.

• Q: What is COB technology and how is it different from traditional SMD LED displays?

A: COB (Chip‑on‑Board) directly mounts bare LED chips onto the PCB and covers them with a uniform protective epoxy layer, eliminating the individual plastic packages used in SMD. This integrated structure enables ultra‑fine pixel pitches (effortlessly achieving P1.5 down to P0.9 and below), higher durability (no exposed lamp beads to knock off), better thermal conductivity, and superior protection against dust, moisture, and static.

• Q: Does this COB display suffer from burn‑in or image retention?

A: No. COB utilizes inorganic LED chips, which do not suffer from the organic material degradation found in OLED. Static images (logos, HUDs, dashboards) can be displayed for extended periods without any permanent burn-in or image retention.

• Q: Is the COB display surface truly seamless and how does it affect touch or cleaning?

A: Yes. The surface encapsulation creates a completely flat, seamless surface with no gaps or bumps between pixel zones. This makes the display easy to clean (simply wipe with a soft cloth) and allows for safe interaction or front maintenance without the risk of damaging individual LED beads.

• Q: Can the COB display be repaired if a pixel fails?

A: Yes. For on-site maintenance, the modular cabinet design supports quick front-service access-a faulty module can be swapped with a spare in minutes to minimize downtime. For post-event maintenance, individual pixel repair is also supported using specialized COB rework stations, ensuring the module can be fully restored rather than discarded.

• Q: What is the typical lifespan of this indoor COB display?

A: The L70 lifespan exceeds 80,000 hours under normal indoor operation (25°C ambient, typical brightness). The inorganic LED chips experience very gradual brightness decay, far slower than OLED, ensuring years of reliable service.

• Q: Does COB technology run cooler than SMD at the same brightness?

A: While the total heat generated depends on pixel density, COB manages heat far more efficiently. The common‑cathode architecture reduces overall power consumption, and the flip‑chip COB design eliminates the thermal resistance of SMD plastic brackets. Heat is conducted directly from the chip to the PCB and cabinet, allowing for highly effective passive or low‑speed fan cooling. This improves reliability and reduces noise in quiet environments like home theaters or boardrooms.

• Q: What pixel pitch should I choose for a viewing distance of 2–3 meters?

A: For a viewing distance of 2–3 meters, P1.2 or P1.5 is recommended. For distances under 1.5 meters (e.g., home theater front row), P0.9 provides a retina‑like, pixel-free immersive experience.

• Q: Can this COB display be wall‑mounted without a bulky steel frame?

A: Yes. The ultra‑slim cabinet (as thin as 38 mm) and lightweight design (<5 kg per 600×337.5 mm cabinet) allow direct wall mounting with simple brackets. No rear access space is required because full front‑service is supported.

• Q: What video interfaces are supported?

A: Standard interfaces include HDMI, DVI, DisplayPort, 3G‑SDI, and Ethernet (RJ45 for cascading). Custom interface options (e.g., optical fiber, wireless) are available upon request.

• Q: Is this COB display suitable for broadcast or virtual production studios?

A: Absolutely. For standard broadcast and studios, the 3840Hz refresh rate eliminates camera flicker. For high-end virtual production (VP) with demanding camera shutter speeds, 7680Hz or higher refresh rate options are available. Combined with the wide 160°+ viewing angle, it ensures consistent color and brightness under various studio lighting conditions.

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