What does COB stand for? According to Wikipedia, COB is the abbreviation of the chip on board. It is a kind of manufacturing where integrated circuits are wired and bonded directly to a printed circuit board, with LED lamps in the front and drive ICs at the back to make up a COB LED module. Then such LED module COB composes an LED display.
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The COB LED encapsulation gathers the upstream of LED chip technology, midstream of encapsulation technology and downstream of display technology. As a result, COB LED display could be applied widely based on the upstream, midstream and downstream close cooperation.
Here are some advantages of COB LED:
&#; R&D: There is no diameter of per single LED, and it could be made even more micro in theory.
&#; Technical craftsmanship: COB LED holder cost is reduced, the production process is simplified, the LED chip thermal resistance is lowered, high-density packaging is achieved.
&#; Project installation: It is much more convenient and faster to install of COB LED module.
6 Features as follows:
Although COB LED has the above advantages, there are some technical problems need to be solved:
&#; The passing rate is low for one-time encapsulation. And the maintenance cost is high.
&#; The homogeneity of the COB LED display is not as good as that of the SMD LED display.
&#; The COB LED at the moment still needs solid crystal and wire solder craftsmanship, which brings many problems during this process.
&#; The production cost is much higher than the SMD type due to a high failure rate.
Conclusion:
Although COB LED technology has achieved many breakthroughs, SMD LED is still widely applied in P1 or above types. We could say the COB LED display is made only for P1 or below pixel pitch types. And the COB LED could be applied more in the future.
What is a COB LED?
How Long Do COB LEDs Last?
When Using Battery Power, Why are COB LEDs So Important?
What are the Differences between Normal Led and COB LED?
Differences between COB LEDs and SMD LEDs
Why Choose the COB LED?
The Advantages and Disadvantages of COB LED
Multiple Uses of COB LED
Conclusion
LED lights are continually being upgraded to increase their usability, adaptability, and energy efficiency. When compared to standard incandescent lights, LED lights are extremely popular since they may last up to 25 times longer while using less power.
COB and SMD LED lights are two types of LED lights available, which are the two primary sources of light these days. Both of these components create high-quality illumination and have a lengthy life expectancy, as well as the highest efficiency to date.
In this case, we will talk about COB LEDs, which are the latest in the LED industry and provide a number of advantages over the previous options.
One of the most recent developments in the world of LEDs is "Chip on Board" (COB) technology. When contrasted to other standards, we can consider it quite recent and innovative.
COB lights are made up of an arrangement of LED chips that are tightly packed and attached to a silicon carbide base. As a result, one huge LED chip with outstanding illumination uniformity is created, making it perfect for many professionals such as filmmakers and photographers.
Generally, COB chips feature nine or even more diodes. Irrespective of the number of diodes, COB chips only have two contacts and one circuit. On a big chip, this can result in more powerful lighting of up to 250 lumens (at 20mA). The panel-like aspect of COB LED lights is due to the chip's basic circuit design.
COB LED lights, unlike SMD LED lights, cannot be utilized to make color-changing lamps or lights. That is due to the fact that there are only two contacts and one circuit. To achieve the color-changing illusion, several modification channels are needed. COB LED lights are hence effective in single-color applications.
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The longevity of a COB LED is determined by how they are used as well as how much heat they are exposed to. A COB LED has an average rated lifetime of 50,000 hours. That is assuming a person uses them for 12 hours a day on average.
There has always been a trade-off between both the amount of high-quality lumen output (brightness) and the duration of runtime through battery operation when building a battery-powered lighting system. If you utilize the same size battery, the more high-quality illumination you want, the shorter the runtime will be. That has become considerably less of a concern with the emergence of COB LED tech.
COB LEDs with little power can produce exceedingly high-quality, ultra-bright light. As a consequence, a COB LED-based lighting system may be powered for extended periods of time using a relatively tiny and lightweight lithium-ion battery pack.
To begin, a basic understanding of Surface-Mounted Device (SMD) LEDs is required. They are by far the most widely used LEDs on the market today. The LED chip is firmly fused to a printed circuit board and is widely utilized due to its adaptability, even in the notification light on the smartphone. The amount of diodes and contacts on SMD LED chips is one of their most distinguishing features.
More than two contacts are possible on SMD LED chips. On a single chip, up to three diodes can be found, each with its own circuit. An anode and cathode would be used in each circuit, resulting in 2, 4, or 6 connections on a chip.
SMD LED chips can include up to three diodes on a single chip, each with its own circuit. In a chip of this type, each circuitry contains a single anode and one cathode, resulting in 2, 4, or 6 connections. COB chips typically have nine or even more diodes. Furthermore, irrespective of the number of diodes, COB chips have two contacts and one circuit. COB LED lights have a panel-like appearance, whereas SMD LED lights would seem like a collection of smaller lights due to this straightforward circuit design.
The SMD LED chip could have a red, green, and blue diode. By employing those three diodes, you can generate any hue simply by altering the output level. But there are just two contacts and one circuitry on COB LED lights. They can't be utilized to create color-changing lights or bulbs. To achieve the color-changing appearance, multiple channel modifications are needed. As a result, COB LED lights are effective in single-color applications but not in multi-color uses.
The luminosity of SMD chips is well known, and they may generate 50 to 100 lumens per watt. COB is noted for its high heat efficiency and lumens per watt ratio. With a minimum number of 80 lumens per watt, COB chips could emit more lumens with less power. It can be found in a variety of bulbs and applications, such as a point-and-shoot camera or your 's flash.
In SMD LED chips, a smaller current capacity is necessary; however, in COB LED chips, a large current capacity external energy source is needed.
COB LED lights, as a basic guideline, are higher-quality light emitters. This is due to the fact that they use reflectors to create concentrated and regulated light. They also lack the frosted lens that comes standard with SMD LED lights.
COB LEDs are a higher-end LED that has a more structural look. In case you intend to live with your LED bulbs for a long time, a COB is a way to go; if you are located in an investment property, SMD will suffice.
You should expect brighter, clearer lighting. COB LED lights, for example, are useful in high-ceiling areas.
COB LEDs have a wide range of applications, extending from residential to industrial utility, with some of them being:
COB LEDs are becoming more popular in lighting applications as designers discover the advantages of employing them over typical standard LEDs. It's difficult not to take into account them for any led light application structure because of:
COB LEDs are the most recent and advanced tech available today. Simply said, they are brighter, use less electricity, and provide a higher-quality beam of light than previous LED technology now used in most trade show illumination.
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