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LED displays are everywhere. From the streetlight outside of your house to the LED screen installed outside of a mall, you can never escape LEDs. They have also evolved with time. Conventional LEDs are now no longer the preference of the market. With a wide range of better and more progressive LEDs, traditional models are losing their charm. COB LED display is some of such new technologies.
COB is Chip on board, which is a different chip encapsulation technology, all chips directly integrated packaged on the special PCB board, while what we said encapsulation tech is putting three RGB led chips to integrate inside an SMD electronics package to produce the individual SMD diodes.
COB literally sounds similar to the GOB display technology, but it has longer developing history, and recently has been adopted in some main manufacturers’ promoted products..
Wide viewing angle, high color uniformity, high contrast, high power efficiency, etc, are the cliches features same with traditional led technology. The biggest thing is using COB to get high protection performance like collision avoidance ,moisture proof and dust proof, in short, higher environmental adaptability, this Nanoshi led coating technology to get pixel level protection.
Obviously, COB technology is also to get high protection display same with GOB. Besides the cost, COB has a risky during the process of wavelength and color splitting and picking for all chips on the boards, which make it difficult to get perfect color uniformity for whole display. But GOB can get good color uniformity as modules have been made and tested in traditional way same as normal modules before the special gluing. The maintenance for COB is also a problem waiting to be solved.
And itself Delta-enhanced COB technology, which features high brightness for small pitch led display, 3 times higher than most high-resolution led display, as high as 3000Nits. It claims using micro-leds, by laying three discrete Red, Green and Blue monochrome micro-LEDs on board.
Some of the pros of COB LED Display are,
COB LEDs are compact since the chips are bonded together and no extra lenses and packaging is involved. This largely reduces the size and saves a lot of space.
COB LEDs have higher light efficiency than conventional LEDs
Lighting effect on these LEDs is improved than traditional models.
Heat generated by chips is reduced and no heat dissipation occurs
Only one circuit is required.
Since the welding points are fairly fewer than traditional models, there is less risk of failure in these LEDs
Some of the cons of COB LED Display are
Color uniformity is difficult to achieve for the whole display due to light splitting between the chips.
As the size of chip increases, the light efficiency of the chips and LED is decreased.
The color variety is very limited.
Some of the applications of COB Technology are,
1. COB Technology can be used in Street lights to increase the light’s efficacy .
2. LED Lamps used in homes can often generate a lot of heat, taking up a lot of power and heating up the house. COB technology can be used in these LED lamps to reduce the power consumption and heat dissipation.
3. COB technology can be used in playground lighting since they operate with higher efficiency and have a wider viewing angle.
4. COB LED technology can be used in smartphone camera flash to get better photo results.
Choosing the correct LED is not an easy decision. There are many different LEDs in the market. You can only make the correct decision once you are well informed. Make sure to do your research to find which ones are the best for you. If you have any more question, please do not hesitate to contact us!