Understanding everything about LED displays requires knowing about the significant bits and pieces of the device and the industry. It’s not enough that you know that the LED display’s market value is expected to rise from 2.10 billion USD last 2022 to 2.84 billion USD by 2029. You should also know the basics about several technical elements like the types of LEDs used in the modules like COB LED. 

Some would not prefer to dive into the technicalities of your investments but if you want to make the most out of your money, it is ideal to educate yourself all about how LED displays operate in the first place and what role a COB LED strip plays in its operation. 

What is a COB LED?


COB LED or Chip-on-Board is a type of LED mounting where the LED chips are installed directly to the board to generate the light for the displays to operate. This LED mounting type is known for producing improved lumen density, which is only possible if the density of the diodes is highly packed and arranged on the substrate. This also means that the light that will be reflected looks more uniform. 

The LED chips used in COB LED are bare and free from phosphor coating or lead frame. This condition allows the chips to be installed close to each other, which is how it increases the luminous density of the display. After mounting the chips, the coating will then be used on the group of LED chips as a whole. 

This arrangement means that there are more LED chips installed on the module compared to other types of LED chips mounting. The chips also occupy less space and have tighter pixel pitch. This results in the COB LED display being of higher resolution. The COB LED technology is a huge improvement, in terms of energy efficiency and image quality. It is an option worth exploring, especially with the display’s average lifespan of 50,000 hours. 

Pros and Cons of COB LEDs


One of the elements you can look into regarding LED displays with COB mounting type is its pros and cons. If you’re unsure if an LED screen with COB technology is ideal for you, check out the benefits and drawbacks you will have to face when you choose this display. 

Pros of Using COB LEDs

When investing in LED screens, the best move to make is to look into the benefits you get from using these devices. Here are some of the pros you can enjoy when using a chip-on-board LED display:

Top-notch Image Quality

COB LED displays are compact with high intensity and uniformity due to how the LED chips are designed and structured. This leads to the screens having high-quality pixel pitch, ensuring high resolution to the LED displays. These displays have a small pixel pitch, which guarantees excellent image quality in return. The screens can even reach up to 4K resolution. 

When up close, the LED display with COB will be so visually pleasing that you won’t be able to see the pixels on the screen, unlike other types of LED displays

Simpler Electric Design

These LED displays are structured to have a simpler electrical design. Using only 1 two-wire power supply, the LED chips can already effectively operate. This also means that the production process is simpler so the manufacture of these boards is easier and faster. 

Improved Stability & Lifespan

COB LED screens also boast excellent reliability and stability because their thermal performance is incredible. This is also how the device can last longer compared to other LED displays. It is also structured to have a high level of durability and protection abilities, from having anti-collision characteristics to being dustproof and waterproof. Generally, they have a rating of IP54 that guarantees sturdy and strong construction that can withstand weathering elements.

Highly Energy-Efficient

These types of LED displays are guaranteed to be energy efficient and have reduced carbon footprint in their operations. This is relevant for large-scale installations and display operations, especially since you get more savings from the day-to-day operational costs. And when they pile up, they can turn into a massive financial relief.

Reduced Failure Rates

COB LED displays take pride in reduced failure rates. Since the soldering is minimized with the simplicity of the structure and connections, the probable failure points are also reduced. This means that your display is potentially more effective than other types of LED screens. 

Incredible Viewing Experience

These screens ensure an enjoyable viewing experience, with the displaying having the following characteristics;

  • High contrast ratio
  • Wide viewing angle (around 170 degrees)
  • High resolution (up to 4K)
  • Smoother surface
  • Deeper blacks
  • Improved brightness

Cons of Using COB LEDs

When investing in LED screens, you will have to prepare yourself for the drawbacks you will experience. Here are some of the disadvantages that come with choosing COB LED displays you should expect to encounter. 

Limited Color Variety

These screens are quite limited with their variety of colors. They can only use red, green, blue, pink, and white (warm, neutral, and cool). 

More Expensive

LED displays using chip-on-board LED mounting are considered expensive when these screens are compared to the ones powered by SMD chips. 

Lower Repairability 

These screens have a low repairability characteristic, which is primarily due to the simplicity of their structure. When one diode malfunctions, the entire device will be rendered not functional and irreparable. 

Comparison of COB LEDs vs. SMD LEDs


To further understand what COB LED displays can offer, it is necessary to understand what makes this type of display different from other screens using a different type of mounting. Here is a summary of the comparison between COB LED vs SMD LED that’s easy to understand and digest. 

Factors To CompareCOB LED DisplaySMD LED Display
Failure RatingLess Susceptible to FailureMore Prone to Failure
Energy EfficiencyMore Energy EfficientLess Energy Efficient
Current CapacityBiggerSmaller
Ingress Protection RatingIP54IP20 to IP30
Protection CharacteristicsLess Prone to Damages from External FactrosSusceptible to Damage from Heat, Collision, & Humidity
PriceExpensiveLess Expensive
Cost-EffectivenessMore Cost-effectiveLess Cost-effective
Variety of ColorsLimited Wide Variety
Limitations of UsageCan Be Used For Smaller ComponentsLimited to Components Larger than 0.5 mm 
Number of Diodes9 or More DiodesUp to 3 Diodes on a 1 Chip
Connections2 Connection, 1 Circuit2, 4, or 6 Connections
AppearanceLooks like a PanelCollection of Lights
LuminosityAt least 80 lumens per Watt50 to 100 lumens per Watt

With these differences, you can have a general view of whether LED screens with chip-on-board are ideal for you or whether SMD LED displays fit your needs better. You have to match your requirements and preferences to these types of LED screens. 


COB LED displays are some of the most advanced types of LED screens offered today in the market, delivering high image quality using less power and at a lower cost. When you compare COB technology to other LED technologies, you will benefit from the upgrades and improvements made to these displays. 

COB LED screens facilitate more efficient heat transfer because of the small occupied space for the LED chips. These displays also deliver beneficial characteristics that will help you with your visual needs and requirements, wherever you plan to use them. These characteristics include low failure rate and light loss, as well as wider viewing angle, tighter pixel pitch, and higher brightness. 

Considering its durable design, these screens are guaranteed to be sturdy and reliable, with anti-collision, waterproof, and dustproof characteristics. This further ensures that the device will last longer and that your investment will be worth the cost. With the addition of high energy efficiency, you can be sure that you will get way more than what you invested.

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