COB packaged LED display vs. SMD packaged LED screen

With the continuous advancement of LED technology, COB (Chip-on-Board) packaging and SMD (Surface Mount Device) packaging have become two common technologies in LED displays. When choosing an LED display, it is crucial to understand the difference between COB packaging and SMD packaging. Panel LED and COB: the two giants in the LED world.

What is a COB package LED display?

COB packaging refers to packaging the LED chip directly on the circuit board to form a whole chip, and then directly welding the circuit board to achieve the display effect. The advantage of COB technology is that it can provide higher pixel density and more uniform light output. Due to the closer proximity of the LED chips, COB-packaged displays are generally able to achieve higher brightness and better color uniformity. Here are 4 common sense about LED display chips.

What is an SMD packaged LED display?

In contrast, SMD packaging is to weld the LED chip on the circuit board and use SMD technology to precisely package it. This means there is a certain distance between the LED chip and the circuit board and is protected by a transparent encapsulation material. SMD-packaged LED displays are usually thin and lightweight, and are suitable for situations where flexibility and portability are required. Learn more about SMD LEDs in 5 minutes.

The difference between COB packaging and SMD packaging

Pixel density:

COB packages typically have higher pixel density because the LED chips are arranged more closely on the circuit board, allowing for a more detailed image display.

The pixel density of SMD packages is relatively low, and there are gaps between LED chips, so fewer pixels may be included in the same display area.

Brightness and Uniformity:

Due to the dense nature of LED chips in COB packages, they are generally able to provide higher brightness and more uniform light output.

SMD packaged LED displays may be slightly inferior in brightness and uniformity, but may be more suitable for specific requirements in some occasions. How to adjust the brightness and contrast of LED display?

Thickness and weight:

COB packaged LED displays may be thicker because the LED chips are directly packaged on the circuit board.

SMD-packaged LED displays are generally thinner and lighter, and are suitable for applications where weight and thickness are restricted.

cost:

Generally speaking, the manufacturing process of COB packaged LED displays is more complex, which may result in higher costs.

SMD-encapsulated LED displays are usually more economical in terms of manufacturing cost and are suitable for some budget-sensitive projects. Here are the commercial LED display price ranges.

reliability:

The design of the COB package reduces soldering points and therefore may be stronger in terms of reliability.

The design of SMD packages involves more soldering points, which may cause some connection problems during long-term use.

When choosing between COB packaged LED displays and SMD packaged LED displays, you need to weigh their advantages and disadvantages based on specific needs. If you are pursuing high pixel density, uniformity and brightness, COB packaging may be more suitable; and if you focus on lightweight and thin design, and the budget is more sensitive, SMD packaging may be a better choice. The final decision should be made based on project requirements, budget, and specific application scenarios.

Thank you for watching. I hope we can solve your problems. Sostron is a professional LED display manufacturer. We provide all kinds of displays, display leasing and display solutions around the world. If you want to know: What is the principle of synchronous and asynchronous control of LED display? Please click read.

Follow me! Take you to know more about led display knowledge.