Key Questions to Ask When Ordering COB LED Market

LED strips have been a trendy DIY lighting solution for many applications for many years. That&#;s why we are so interested in the latest LED strip technology, COB flexible led strip lighting.

You will get efficient and thoughtful service from Getian.

What is COB?

COB stands for Chip on Board in the LED field, which basically means that the LED chip is packaged directly on the circuit board (PCB). Chip on Board&#; LEDs for flexible strip lights are sometimes referred to as flip-chips.

Flip chip LEDs are basically a bare-bones approach to LED construction. Take a look at an ordinary SMD (Surface Mount Device) LED. It has a Lamp bead holder that package the LED chip and then covers it with a phosphor coating. The &#;flip chip&#; that makes up the COB LED strip removes everything from its design, except for the LED chip, yellow phosphor cover layer, and connection pads.

How is COB LED flexible strip manufactured?

1. Expanding Chips
2. Die bonding
3. Resistors onto FPCB
4. Reflow-High temperature over 65 degrees for finished PCB with chips and resistors
5. Fluorescent Powder glue mixing
6. Drop the mixing glue on the surface of chips and resistors by auto glue machine
7. Put glued cob led strip into the oven
8. QC-testing the cob led strip after cooling
9. Soldering the PCB into 5 meters per reel or the length as customer request
10. Aging test, QC test, packing, then shipping

Advantages and Disadvantages of COB LED Flex Strips

Now that you have a basic understanding of how this new COB led strip is produced, it&#;s time to see its advantages and disadvantages.

Advantages:

No LED lighting dot, even without aluminum profiles.

One of the biggest complaints about traditional LED strips is the lighting dot throughout the strip. A lighting dot is a bright area through the strip where you can see where the light is coming from. Light is more soft and attractive when it looks like a smooth light source rather than a lighting dot mess.

With SMD flex strips, the larger diodes are squeezed close enough so that the light is spread out and consistent across the illuminated surface at a distance. But if the light is too close to the surface or the strip itself is visible, the hot spot is an obstacle that the human eye cannot ignore.

With a 480 chip/M COB strip, it is pretty challenging to pick out any hot spots on the COB flex strip. This strip shines a soft, uniform light from end to end. Even light with no lighting dot is more attractive to the human eye and gives off a steady light even in the narrow places. The only natural way to see the lighting dot is to look at the back of the strip, where it is easier to see the individually placed flip-chip LEDs. You can only see the individual led if you dim strip down to about 5% brightness. This makes COB flex strips ideal for applications where

1. The led strip itself cannot be hidden from view.
2. The surface being illuminated is within 2 feet of the light bar.
3. Reflective surfaces like granite/glass are all around.
4. Those applications where you want an excellent neon effect.

More flexibility

These strips are much more flexible than other flexible strips because of the small size of the diodes and the uniform weight distribution. These diodes are so small and closely spaced that no point of the strip is the same. This uniformity makes it easy to set up the strips without planning around a SMD LED sticking out where you don&#;t need it. This extra flexibility will make it easier for them to fit into tight areas and turn corners in your application.

More stable, fewer problems

1. COB strip is the chip directly attached to the FPCB, does not come with gold wire. Traditional SMD LED strip, very many problems are caused by the gold wire inside the LED beads. Because the gold wire is too small, it is straightforward to be broken, leading to the chip not being illuminated.
2. The circuit design of the COB strip uses three chips, first in parallel, as a group, then each group, and then in series to form one step. Even if a group of two chips inside the bad, this one-step strip can continue to light. And COB a meter of chips how big 480, even if 1-2 chips do not light, will not produce dark areas, will not affect the use. While the traditional SMD strip, a CUT, as long as there are lousy lamp beads, this one cut will not light, so there will be obvious to see a section of the dark area.

Wide emitting angle

The traditional SMD light strip luminous angle is 120 degrees, while the COB light strip luminous angle is 180 degrees.

Disadvantage:

1. The most significant disadvantage of COB led strips is that it is difficult to maintain the consistency of color. Because there is no COB led strips binning machines on the market. At present, all COB led strips manufacturers are only sampling to ensure color consistency. So, COB led strips are difficult to ensure that 100% are within the 3-step color tolerance.
2. COB led strip light efficiency, currently only about 120LM/W. If you need higher light efficiency, COB led strip is not suitable.
3.  The maximum power of COB led strip, only recommended doing 15W / m. Because the number of chips per meter is too much, if the power exceeds 15W / m, the chip&#;s heat is brutal to dissipate. COB led strip life will be shortened.

SMD encapsulation procedure &#; Binning

Conclusion

If you need a light effect without light spots, you can try COB led strips. If you need strict color consistency, such as 3-step Macadam color tolerance or 2-step Macadam color tolerance, or if you need high lumens, high luminous efficacy, then you can only consider the traditional SMD led strip.

Characteristics of COB Flex Strips

If you&#;ve been listening, the advantages and disadvantages of COB flexible light strips should be obvious, so now let&#;s get into some specific details about this sort of strip. If you&#;re acquainted with LED strips, then lots of this may sound familiar, but there are some differences during this form of strip, so it&#;s best to test out the guidelines below before using COB strips.

Cut and Connect

COB led strip can cut this strip just like our other strip lights. Please only cut along the cut marks marked on the strip every 50mm (24) / 25mm (12V). This allows you to cut the strip to a custom size or add gaps to your application. The cut strips can be used again and are best connected by soldering, but if this is often not an option, our COB strip connectors also are available as an option.

Dimmable

COB led strips are dimmable as well as regular SMD led strips.

You can use DALI, triac, PWM, 0-10V dimming power supply to use with COB led strips to achieve dimming.

Color Options

White light: K, K, K, K, and other custom color temperatures are available

Colorful light: Red, green, blue, yellow, pink, etc., are available.

Tunable white, RGB, RGBW are all available.

Tunable White COB led strip

RGBW COB led strip

IP grades

IP20 none waterproof, IP52 silicone drip, IP65 silicone sleeve, IP67 silicone sleeve, and other various waterproof ways are available.

COB led strip light applications

1. Architectural
2. Furniture & wine cabinet
3. Holtel renovation
4. KTV & KTV bar
5. Parking
6. shopping mall

How to install the COB led strip light? (step by step)

1. Clean the surface where you wish to put in the COB led strip light.
2. Cut the scale of the COB led strip light you would like to put in.
3. Tear the 3M backside of the COB led strip light.
4. Paste the COB strip light where you would like to put in.
5. Connect the ability supply with COB led strip light.
6. If you wish to attach the COB led strip light, you&#;ll be able to solder or use the connector.

After you read this article, I believe you already have a basic understanding of COB led strips. If you want to know more, please visit https://www.ledyilighting.com/all-you-need-to-know-before-buying-cob-led-strip/

Overview&#;

1&#;What is COB Led?

2&#;What are the advantages of COB light source?

3&#;Where are the main applications of COB?

4&#;Why choose the COB?

5&#;How to choose LED COB lights?

6&#;Difference between COB LED and SMD LED

W

hat is COB Led?

COB lamp is a kind of LED lamp. COB is the abbreviation of Chip on Board in English, which means the packaging technology of chip on board. It is a high-efficiency integrated surface light source technology in which multiple LED chips/bare chips are directly attached to a high-reflectivity mirror metal substrate (such as silicon carbide). This creates a large LED chip with compactness, energy-saving, and excellent uniform brightness, which is loved by related professionals such as filmmakers and photographers. Generally, COB chips have 9 or more diodes. However, no matter how many diodes there are, COB LED lights have a single circuit with several contacts. Because it has the characteristics of easier dimming and color adjustment, high brightness, anti-glare, and can well solve the problems of chromatic aberration and heat dissipation, COB light sources have now been widely used in commercial lighting and other fields.

W

hat are the advantages of COB light source?

If you are looking for more details, kindly visit COB LED Market.

1&#;Cost saving

 

In terms of cost, compared with previous discrete light sources, COB light source modules can save the cost of device packaging in actual lighting applications, as well as the cost of light engine module production and the cost of secondary light distribution. In a lighting system with the same function, the overall cost can be saved by about 15%.

 

2&#;Strong performance

 

In terms of performance, the COB light source module can also effectively solve the glare problem caused by the combination of discrete light source devices through reasonable design and technology. You can also add a red chip combination to ensure that the efficiency of the light source is not reduced, and the life of the used equipment is guaranteed, while also improving the color rendering of the light source. The COB light source is integrated by multiple diodes, with a large focus area, a single chip can cover a large area, and the light concentration is high. The use of transparent lenses reduces light loss, improves clarity, and helps improve light efficiency.

 

3&#;Convenient application and mass production

 

In the actual application process, COB light source modules can also make the installation and production of lighting manufacturers easier and more convenient. With the current level of technology and advanced equipment, large-scale COB light source module production can be carried out.

 

4&#;Energy saving and environmental protection

 

Compared with other LEDs, the light-emitting area of the COB light source consumes less energy when emitting the same lumen brightness. The light-emitting area of the COB light source is greatly reduced, and the heat generated is greatly reduced. At a certain temperature, the life span and reliability will be improved, energy consumption will be saved, and the problem of light source failure due to heat dissipation will be avoided.

 

5&#;Secondary light distribution can be formed

 

The light-emitting angle and effect of the COB light source are better used through the refraction of the lens and the illumination of the spotlight&#;so that the light-emitting angle can be adjusted arbitrarily to form a secondary light distribution.

W

here are the main applications of COB?

LED COB is suitable for various outdoor and indoor lighting applications. It can be applied to general lighting in the industry, housing, construction and other fields. Its uniform brightness makes it play a vital role in film production and photography.

1&#;Indoors&#;spotlights, downlights, ceiling lights, fluorescent lights, and light strips.

2&#;Outdoors&#;street lights, high bay lights, floodlights, current city night scene wall washer lights, luminous characters, etc.

W

hy choose the COB?

1. High light efficiency

The high intensity and uniform luminosity of the on board chip can provide users with a good experience. COB LED lights are high-quality light emitters because they use reflectors to produce concentrated and regulated light. It satisfies high-standard lighting applications for brighter and clearer lighting.

 

2. Flexibility

The compactness of the COB LED array makes it easy to use in different places. Traditional DIP lamps are cheap but too bulky. Compared with DIP lamps, COB LEDs are more portable and flexible in outdoor applications and are very convenient.

 

3. Easy to install

Compared with the SMD lamp, the entire chip of the led cob panel only needs one circuit and two contacts, while the SMD lamp needs one circuit for each diode contained in the chip, so it is easier and more convenient to install.

H

ow to choose LED COB lights?

To choose a COB LED panel, the following are some of the factors you need to pay attention to.

 

1&#;Light output: The light output is determined by the lumens of the light. The higher the lumens, the brighter the light can be seen.

2&#;Lighting method: There are various COB LED lights on the market now. Some of them can change the lighting mode according to the different requirements of the scene.

3&#;Power supply: Before buying a lamp, it is necessary to determine its power requirements. If the lamp is portable, a stable power source is required.

4&#;Internal heat sink: Since the cob-led chip generates a lot of heat, a good heat sink is essential.

D

ifference between COB LED and SMD LED

Table form:

COB LED

SMD LED

Output lumen
(lm/watt)

At least 80 lm/w

50 to 100 lm/w

Mounting difficulty

Easy

Moderate to Hard

Efficiency

Higher

Lower

External Power Supply

External power supply with high current capability is must

Lower current capability is required

Cost

Expensive

Slightly lower than Cob led

Different inside the chip

two contacts and one circuitry, cannot be used to make color-changing lamps. To achieve a discolored appearance, multiple channel modifications are required.

red, green, and blue diode. By using these three diodes, any desired hue can be generated simply by changing the output level

Image form:

At present, lighting technology continues to develop. As designers realize the advantages of using COB LEDs over traditional standard LED options, COB LEDs are used more and more. In order to provide brighter light and use less energy, it has become a common application in lighting products. They can pack more LED light sources into a smaller space to increase lumen output, and can more effectively transfer heat to the radiator. Because of the simpler structure, the failure rate is lower, the light loss is lower, and the viewing angle is larger. It is difficult not to consider them in any lighting application design.

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