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Surface Mounted Device VS. Chip on Board LED Display: Which is Better?

From:HCP TechnologyTime:2022-03-25

With components and auxiliaries taking new forms and shapes in the digital world, it is evident that electronic items will become more exceptional in build quality. There are hundreds of components used to make a complete structure that serves a particular purpose. One of them is the LED display, which is based on two different types: Surface Mounted Device LED display and Chip on Board LED display.

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       (Copyright photo from https://unsplash.com/photos/3A0bs74T8zc)


Depending on the various requirements and properties that Surface Mounted Device and Chip on Board LED displays provide, people would prefer either for use on different occasions. However, they still puzzle over the differences between these LED display screens and which is better to use. Therefore, this article will clarify the doubt and recommend the best-LED display manufacturer. 

 

What is the COB LED Display?

Before we dive into the differences between Surface Mounted Device and Chip on Board LED displays, let's first understand what they are.

 

The Chip on Board LED display, also known as the COB LED display, which is all chips directly integrated on the special PCB board and adopts an advanced technology that improves the reliability and contrast ratio.  Due to the various merits the Chip on Board LED display offers, it is easy to find that these LED displays are used in command centers, conference rooms, broadcasts, home cinemas, etc. 

 

What is the SMD LED Display?

Surface Mounted Device LED display, called SMD LED display, is the most common and mature LED solution. In most situations, SMD LED display fused to a PCB (Printed Circuit Board) that is built on a rectangular and flat-shaped object. In addition, they are optimum for space-limited board sizes and equipment with shock and vibration-resistant characteristics.

Surface Mounted Device VS Chip on Board LED Display: Major Differences

Although these two types of LEDs are similar in function and remain in high demand within the market, they tend to possess some key differences, such as LED performance, cost and maintenance, and efficiency, which are listed below:

 

1. LED Performance

SMD and COB LED displays have disparate performance due to their different technologies. And some of their major differences are discussed below:

Performance

Chip on Board LED display

Surface Mounted Device LED display

Viewing Angle

wide

wide

Contrast Radio

20000:1

3000:1

Reliability

High

Medium

Protection level (waterproof/dustproof

/anti-static)

 

High

 

Medium

Illuminant

Surface light source

Point light source

Color gamut

wide

narrow


The above data shows the superior performance of Chip on Board LED displays, which is why COB LED display is gradually becoming trendy and owning a prosperous market. Meanwhile, a copious number of people argue that COB LED display with excellent performance will be the future of Ultra-Fine Pitch LED.


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2.Reliability  

Usually, Surface Mounted Device LED display uses a lateral chip. Unlike SMD, Chip on Board LED display is known for better reliability due to its flip-chip design. Flip-chip design allows the packaging of more chips in the same area without wire bonding, which improves the performance and reliability of advanced LED displays. Therefore, Chip on Board LED display has advantages on low thermal resistance and better output of light. 

 

3.Technology and Maintenance

For the pixel pitch under 1.0 mm, SMD LED display usually faces three common technological difficulties:

  • IC is hard to be placed with the limited space.

  • The time of surface mounting is too long, even with a 40K/h high-speed SMT machine.

  • It is too difficult to control the yield rate.

However, for COB LED displays, these problems can be solved. With HCP invested in research and development of the new technology, the mass transfer equipment made the UPH over 2.5KK possible. The mass transfer equipment perfectly solves the technical difficulties of SMD.

Comparing SMD display with COB display, COB display has the lower maintenance costs due to its characteristics of waterproof, dustproof, higher lifespan, high yield rate, and high protection level. 

Which is Better? 

Concluding the discussion on comparing SMD and COB, we can figure out the complexities and differences between the two. Though SMD has excellent heat dissipation, COB LED display is proficient in space efficiency and improves LED performance. 

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If you're looking for a company that deals with Chip on Board LED displays, HCP is the ideal choice. AtHCP, we offer high-quality products with low maintenance costs, wide viewing angles, and better illuminations. Not only that, but all of our products possess distinctive merits, features, characteristics, and other unmatched functions that will never disappoint you. 

 

If you consider purchasing our Chip on Board LED display, we will provide a great offering with detailed information about types of products and a brochure for more details. Please contact us, and let’s see how we can help you. 




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