No complicated formulas,no hard-to-understand jargon – just practical advice that dealers can actually use.

More and more meeting rooms, showrooms, and command centers are switching to COB screens. But when customers ask, “What’s the real difference between COB and regular SMD?”many dealers still struggle to give a clear answer.

Below, we break it down from four practical angles: maintenance cost, durability, image quality, and upfront budget.

1. SMD vs. COB –The Core Difference in One Sentence

SMD: Each LED chip has its own individual“shell,” like many tiny light bulbs soldered onto the board. The advantage is that it’s cheap and mature. The downside is that the solder joints are exposed– vulnerable to impact and moisture. If one LED fails, you replace that single bulb.

COB: The chips are directly packaged onto the board, with a whole layer of resin protection on the surface. The benefits:not afraid of bumps, not afraid of humidity, and doesn’t collect dust. If a single light point fails, it’s barely noticeable and doesn’t need urgent repair.

For dealers and end users, the most intuitive difference is this: SMD means more maintenance down the road; COB means virtually no worries.

2. Compare fromFour Angles – Quick Reference

The bottom line: If the customer wants a screen they can “install and forget,” COB is the better choice. If the budget is extremely tight and the screen will be used infrequently, SMD can still be considered.

3. Which Customers Are Switching to COB?

High-end meeting rooms: No more“splotchy screen” or heavy pixelation – camera shooting without scan lines.

Exhibitions / brand showrooms: Uniform black appearance when off, bright and clear images when on – enhances the overall premium feel.

Surveillance / command centers: Running 7×24 hours. COB’s low failure rate cuts the maintenance team’s workload by more than half

4. Focono COBSeries – Choosing the Right Pixel Pitch, Made Simple

FOCONO’s fullindoor COB series covers commonly used pixel pitches:

Commonadvantages across the entire series:

Only 28mm thick – ultra-slim,space-saving

Supports 54‑inch extra‑large cabinet –easy to assemble 2K/4K screens

Low power consumption, long lifespan –theoretical 100,000 hours

High compatibility – supports multiple packaging technologies such as SMD, COB, IMD, and MIP, delivering excellent product value

5. How to Decide Whether to Go with COB

When your customer meets two or more of the following criteria, confidently recommend COB:

The screen runs more than 6 hours a day

They require fine image detail (closeviewing distance)

They don’t want to frequently hirerepair technicians

The project has a lifespan of 5 years ormore

You might stillwonder: “COB is quite a bit more expensive than SMD, isn’t it?”

Answer: Theupfront cost is 20–30% higher. But over three years, the electricity savingsplus lower maintenance costs will basically close the gap – and may evensurpass it. And every year after that is pure saving.

COB isn’t afuture technology – it’s a reliable choice you can deliver to customers today.The Focono COB series has proven its stability in many domestic and overseasprojects. If you have a project that demands high image quality andreliability, just grab a sample or propose a solution and give it a try.

👉 Click to view the full Focono COB series details