LED lights come in a variety of types. Among them COB and SMD LED gain great popularity. And here comes the question, SMD VS COB LED, what are the differences?
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*SMD LED construction
SMD LED, which is short for Surface Mounted Device LED, is the most common LED in the market. The LED chip is a versatile electronic component that is permanently fused to a printed circuit board. It is applied to light bulbs and string lights, as well as your phone's notification light.
SMD LED chips are available in a variety of sizes. For example, one of the SMD chips, the SMD LED 5050 is 5mm wide while the SMD 3528 has a width of 3.5mm. As you can see, SMD chips are compact, practically identical to the flat, square computer chip architecture.
*COB LED construction
What is LED COB? COB LED technology is a recent advancement in LED lighting that allows for more effective energy use. As for COB manufacturing, it has several diodes on the same surface as SMD chip does. However, the distinction between them is that COB LED has more diodes.
Typically, COB chips feature 9 or more diodes. No matter how many diodes, they have only one circuit and two contacts, resulting in a panel-like look of COB LED lights.
When SMD VS COB LED in brightness, it also distinguishes. The level of brightness highly depends on the lumen output by the involved chips. Generally speaking, compared to other light sources, LED lights are capable of illuminating with brighter light, a result of higher lumen. But among different types of LED, the lumen differs.
For example, COB LED lumen is 80 lumen per watt at least, while SMD applies 50 to 100 lumen per watt, while the lowest measure of COB is 80 lumen per watt. Therefore, lights with COB are brighter.
In general, working with LED light like COB light ensures great energy efficiency. This is why, in comparison to filament bulbs, they are gaining popularity and becoming the most favored light source.
With this in mind, you can assured that both SMD and COB LEDs will be extremely energy efficient. But pay attention that the energy efficiency varies according to the lumens used. The higher the lumen measures, the greater the energy efficiency is.
SMD is more adaptable and offers a wider range of options when it comes to color and color temperature. It is easier to get a varied color since different primary colors can be used. When you wish to adjust the color temperature, it also works. A red, green, or blue diode could be included in the chip. You can already make practically any color with these three diodes by altering the output level.
As for the COB, however, the ability to modify the colors and color temperature is limited. It is designed to emit only one color and temperature of light. But as a result, it offers more stable lighting.
When it comes to the quality of light, it is also different when SMD VS COB LED. This is primarily due to the fact that they each use different numbers of diodes, which influences the brightness and range of lighting.
When it comes to SMD LED lights, the resulting light has a glare to it and is ideal to be utilized as a point light, a result of the attachment of multiple light sources.
COB light fixture, on the other hand, will emit a uniform and glare-free light. It produces a light beam that is homogeneous and easy to modify. This is primarily because of its wide-angle beam, which makes it a better light source. Therefore, you can DIY LED COB as surface light.
The cost of getting devices built with these different technologies differs. They are both strongly dependent on manufacturing costs, which are distinct.
When compared to its counterpart, SMD has a greater production cost. For example, SMD is more expensive than COB when comparing the labor and manufacturing process to the material cost.
Generally, the cost of SMD accounts for 15% of the total material cost. As for COB, labor and production costs contribute for 10% of the material cost for. This demonstrates that chip on board LED saves you roughly 5% on manufacturing costs.
Type
Brightness
Color temperature
Using
Cost
COB
≥80 lumen per watt
Unchangeable
Surface light
5% less
SMD
50 to 100 lumen per watt
Changeable
Point light
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Higher
LED lights play an important part in our daily life, especially in photography and architectural lighting. When having a purchase, SMD VS COB LED, which is more suitable? Let’s have a look.
In most cases, LED COB bulbs are wildly used in LED video light for photography. As we know, COB lights features luminous uniformity because of its wide beam angle, making it preferable among photographers and filmmakers.
For example, the COLBOR CL100 is a 100W COB LED light. It provides stable 100W output in bi-color temperature, enabling you to spend less time adjusting the setting. Moreover, it is incredibly light so that you can use it for mobile filming without burden. The CL100 helps you show objects in natural colors.
In architectural lighting, COB LED chips are utilized in more complex lighting applications to provide better beam angles and more aesthetically pleasing fixtures. However, SMD LED are utilized in more general lighting fixtures like diffused panel lights, which have a frosted diffuser covering the light source.
The differences in SMD VS COB LED are various such as brightness, color temperature, manufacture cost. Meanwhile, they are suitable for different applications. Just have an understanding of them and you will get an ideal LED light for video shooting and other uses.
With the rise of new industries such as 5G+8K and XR virtual shooting, the indoor small spacing LED display has gradually become the first choice for indoor high -end large screen display applications. In order to pursue smaller distances and more viewing effects, many manufacturers are constantly innovating the technical means of the industry and seeking a better small spacing solution.
Nowadays, in the field of application, SMD and COB technologies are "dividing in spring", each with accumulation of a large number of loyal fans. However, in the field of tiny spacing LEDs, due to various limitations in the SMD structure, COB is becoming the mainstream technology that major manufacturers are competing for development.
According to the "China LED Small distance Market Analysis Report 2021" released by Discien, the national small spacing sales in 2021 reached 17.15 billion yuan, of which the COB small spacing of P1.6 and below increased by 3.4%year -on -year, P1.1 P1.1 -P1.4 spacing COB products account for nearly 50%. This means that COB is gradually becoming the optimal solution of a tiny spacing LED display, and it highlights the huge development space of COB small spacing.
0 1.
COB vs SMD
SMD is the abbreviation of Surface Mountain Device. It is to encapsulate the lamp cups, brackets, chips, leads, epoxy resins and other materials into different specifications of lamp beads, and then welded through the form of patch Essence
The SMD display generally needs to be exposed to the LED lamp beads. Not only is it prone to the string of light between pixels, it will also make the protective performance poor, affect the imaging effect and service life.
COB is the abbreviation of Chip On Board. The technology refers to the LED packaging technology that directly solids the LED chip solid crystal on the printing circuit board (ie, the PCB board), not the one -piece LED packaging welded on the PCB.
This packaging method has certain advantages in the application of manufacturing efficiency, imaging quality, protection, and small and small spacing.
0 2.
The two parties performed PK
Reliability PK
COB packaging technology does not require welding lines. It can completely solve the failure of SMD due to welding line factors, which greatly reduces the risk of failure caused by metal migration. Without the problem of nakedness of SMD pads, it can achieve lower loss efficiency.
Comparison PK
SMD packaging technology chip luminous surface of formal installation or vertical structure accounts for a small proportion. The inverted COB chip area accounts for a smaller proportion on the PCB board, without electrode blocking. Realize ultra -high contrast.
Stable PK
COB packaging can reduce thermal resistance and solve the problem of release of sapphire or arsenide lining base heat; a larger area of electrodes directly connect the substrate to make the heat dissipation of electronic components better, improve the color stability and service life of the LED display.
Big perspective PK
Because the display screen of SMD packaging is not treated on the surface, it is easy to produce anesthesia and color bias when viewing on the side; while COB technology is encapsulated by epoxy resin or silicone The face is not dazzling, and the viewing experience is more perfect.
Protective PK
The surface treatment technology adopted by COB can prevent LED from failing to work due to damage such as water, moisture, and external force, making the display more resistant to wear, abrasion, dust -proof and moisture; Or drink and clean, and use more assured in the era of the epidemic. The lamp beads of the SMD display are easy to fall off or the dead lamps are broken, and the surface protection is weak.
Facial light source PK
With optical membrane technology, the COB packaging LED display can realize the light sources, not dazzling, and short imaging distance, effectively shorten the best viewing distance, the high -sharpness plus the display is soft, the display effect is better; SMD point light source imaging, near the imaging of the light source, near the imaging of the light source, near the imaging of the light source, near the imaging of the light source, near the imaging of the light source, near the imaging of the light source. The pixels are obvious when watching, affecting the quality of the picture imaging.
COB application prospects
Today, the country has vigorously supported ultra -high -definition videos to show the development of the industry. Domestic ultra -high -definition video shows that terminal shipments and market share have continued to increase globally. In the future, with the gradual sinking of the LED application market, users' requirements for display quality, stability, and reliability of display products will also become higher and higher.
COB technology has become one of the mainstream technology routes in the industry with its high stability, high reliability, and high display quality advantages. The COB packaging characteristics that are not limited by lamp beads and the encapsulation directly on the PCB board makes the light -emitting chip easier to achieve high -density arrangement. In the future, combining the development of MINI & Micro LED technology, it will more effectively promote LED display products into the tiny pitch era.
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