The most complete introduction about COB led strips

25/03/2021

Welcome to read Yiford article, In this article I will share you about:

  • What is COB?

  • What is the internal structure of the COB led strips?

  • What kind of characteristics does it have?

  • What benefits can each feature bring to our life and design?

Before looking for these answers, please take 30 seconds to look at the whole COB light strips and have a basic impression of it.

Click below picture to review video:

There are more than a dozen features listed in this article, some of which may be known to you, and some may not be known to you.

I hope this article can give you a more comprehensive understanding of the COB led strips, so that you can better use Yiford COB soft light strips to create novel products or meaningful lighting projects.

I ever used to put COB led strips on some objects in the home and office. It was really great. I recorded them before and after installation and made short videos. You can refer them on Shirley channel on youtube. Click here to review installation effect videos

Click Here To Watch It

This article is about 3,000 words and it takes 15 minutes to read. I have made it into a video with subtitles, which can be watched on the YouTube channel. please click above picture to watch video directly.

Which COB strip is the most suitable?

In order to meet the diversified needs of the market, Yiford has launched different series of led lights, and provided dozens of different COB light strip products for buyers to choose. Different voltages, different brightness, and different colors, is it a bit dazzling? Don't know what to choose? Don't worry, you will understand after watching this video.

If you are a wholesaler or agent, it is certainly correct to choose the hottest selling items.

If you are a designer and want to choose the most suitable COB light strip for the project, it is recommended to check the Shirley Youtube channel's video on "How to choose the most suitable COB light strip", combined with the introduction of the product details on the website WWW.YIFORD.COM​, You can have a comprehensive understanding of this product before buying, and quickly confirm the most suitable product by yourself for your project.

Of course, if you are undecided, you can also let us help you choose. You can send the lighting requirements to INFO@YIFORD.COM, and we will have professionals to reply you within 24 hours.

COB Means What?

What is COB? COB is short for Chip On Board, which means that the chip is directly packaged on the PCB. The COB light strip is a light strip that encapsulates the chip on a flexible board. Chips mostly use flip-chips, which are linearly solid-bonded on the PCB, and then a layer of packaging glue mixed with phosphor is directly dropped on the surface of the chip.

The light emitted by the chip is refracted, reflected, and interacted with the phosphor inside the encapsulating gel. The gel uniformly emits light of different colors and color temperatures.

it is a new type of process technology, based on the SMD led strips with further evolution. In order to facilitate your understanding, I drew a side sectional view.

What is Internal Instructure for COB/SMD Led Strips?

COB LED Strips

  1. PCB
  2. phosphor encapsulation
  3. chip
  4. gold wire

SMD LED Strips

  1. PCB
  2. solder point
  3. bracket
  4. chip
  5. gold wire
  6. phosphor encapsulation

We can see that the chip is directly connected to the PCB board. The chip on SMD is connected to the PCB board through the bracket and the solder point. SMD's frame of the bracket has a certain thickness, while the COB light strip does not have this bracket.

so on the same length PCB board, COB type light strips There are more chips that can be arranged, and the density is higher. One meter can reach 1000 or even 2000 pieces of chips. The brightness and uniformity of those COB led strips far exceed the SMD led strips.

Compare to COB and SMD LED Strips

Let's light it up and see the comparison.

The COB led strips have a linear light-emitting surface due to their high chip density, while the SMD led strips can see obvious light spots and dark areas. Of course, this dark area and light spot can be solved by adding aluminum profiles and diffusers, just like this.

And COB light strips can become very uniform without adding diffuser. In this way, a lot of material costs and labor costs can be saved.

The role of aluminum profiles

However, the aluminum profile is not completely useless on the COB led strips, it can play a role in fixing the shape and protecting the led strips.

There are also hundreds of different styles of aluminum profiles, which are suitable for different installation methods and different application scenarios. You can find these on the YIFORD website and catalog.

Feature1: Uniform light
Good luminous effect, no light spots, no dark areas, greatly saving material and labor costs

So what are the characteristics of COB light strips?

When introducing the structure of the COB led strips, you may have realized that the most obvious feature of the COB led strips is that it emits uniformly, without bright areas and dark spots, and has good overall consistency, soft and non-glaring.

This is why more and more customers like to buy Yiford COB light strips.

Feature 2: High Color Rendering Index
It can make the color reproduction better, the object looks richer in color, and the details are more obvious.

If you have higher requirements for the color reduction, and hope that the light can better restore the color of the object itself, let the object looks more realistic and more eye-catching, then you must use Yiford high CRI COB led strips, Because compared to the SMD led strips with a color rendering index of about 80, the COB led strips have a high color rendering index of over 90.

What effect can the high color rendering index bring to the illuminated object? Let’s take a look at this comparison chart. Under the illumination of this high color rendering index COB light strips, the illuminated object has richer colors and color gamut. More extensive, more visible parts, more obvious details.

Therefore, Yiford COB soft light strips are widely used in instrumentation, monitoring, machine, museums, jewelry, kitchens, fresh food stores, display areas, and so on.

Feature 3: Good flexibility
Bendable, strong torsion, good ductility, good effect.