What Is COB LED Display Indeed? 

Due to the human pursuit of the ultra-high definition led display, the pixel pitch of LED displays is constantly shrinking.

As the first generation of display technology, the traditional SMD display has been very mature after more than ten years of development.

So, which technical route will finally aspire to in the era of micro led display?

With the development of LED display technology, technical routes such as COB（Which short for Chip On Board） comes out.

Also, different packaging routes can be matched with different chip structures.

SMD, as known as surface mounted devices, refers to using surface mount technology to package LED products.

It can encapsulate lamp cup, bracket, crystal element, and other materials into different specifications of lamp beads.

When producing the display unit with different spacing for mini LED display screens, the lamp bead is welded to the circuit board by high-speed SMT machine with high-temperature reflow welding. 

Considering the technical difficulty during the encapsulation, manufacturers prefer SMD to produce the small-spacing digital LED display screen.

SMD is the primary technology for micro LED display screens with pixel spacing less than 10mm on the market.

On the other hand, COB, short for Chip On Board, is a new packaging technology that encapsulates LED chips, rather than LED lights, directly onto a PCB.

Therefore, the COB-LED will be freed from the physical size of the SMD for higher resolution like P0.9375.

Digital micro led display screens in P0.9375mm, P1.25mm, P1.5625 mm and P1.875 are available with COB.

Furthermore, it is undeniable that COB has better physical properties.

The modules encapsulated with COB are not only lighter than that with SMD but also have a larger view.

Compared to SMD, what COB led display can brings the benefit to you as below:

1; Excellent heat dissipation

One of the aims of this technology is to deal with the problem of heat dissipation of SMD and DIP.

The simple structure gives it advantages over the other two types of heat radiation.

2; Suitable for narrow pixel pitch LED Display

As the chips are directly connected to the PCB board, the distances between each unit are narrow so as to decrease the pixel pitch to provide customers with clearer images.

3; Simplify the packaging

As we mentioned above, the structure of COB LED is simpler than SMD and GOB, so the packaging process is relatively simple, too.

4; Higher waterproof level

With the innovative chip on board of the glued module,it can well protect the LED on the LED module from water or humidity.

5; Better Anti-collision

Special modular designing with anti-collision gluing able to have shock proof function, offering ultra-high protection for LEDs in the various impacts.

6; Exceed Dust-proof.

With high sealing performance of new material, the COB LED screen panel from YONWAYTECH LED is totally dust-free with excellent clarity and offers excellent visual performance with high refresh rate and uniformity color.

The reason for the high reliability is that COB technology can eliminate the control link in the single lamp production process.

In addition, it also removes the lamp bead over the reflow welding process, so that the high temperature in the traditional method will not affect the LED chip and welding line.

Excellent heat dissipation and oxidation resistance also contribute to high reliability.

What’s more, COB adopts high standard coating technology to prevent LED display failure caused by water, moisture, UV, and other damages.

It supports the all-weather operation and can still operate in extreme temperatures in -30 to +80 degrees.

The comprehensive protective process prevents collisions or scratches.

The mini LED display screens can even be cleaned with a wet cloth if soiled.

With the information above, you may notice that COB technology is superior to SMD technology in LED display screen. 

And if you are looking for Micro LED displays, you may refer to some products of YONWAYTECH LED DISPLAY.

Contact with YONWAYTECH LED DISPLAY team for more details please.