Jul. 28, 2025
COB LED Screen packaging technology has great advantages compared with SMD packaging technology.
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Its pros: smaller space of LED beads, better protection performance, long service life, and low dead light rate.
Its cons: difficulty in manufacturing finished products, maintenance inconvenience.
The so-called COB package, that is, the chip-on-board package, is actually a kind of LED chip pasted on the PCB substrate, is a new packaging technology different from SMD packaging technology, this packaging technology simplifies the entire packaging process of the chip, but also eliminates the original support and reflow process so that the entire LED is more stable, the point spacing is also smaller, directly improve the resolution of the LED display.
The most important feature of COB packaging technology is that it can reduce the spacing of LED beads. The original package of SMD in the LED display of the small point spacing can only be P1.2, that is, 1.2mm, difficult to achieve, and can not guarantee a certain dead light rate. However, because the encapsulated COB changes the layout and composition of the LED beads, it can essentially reduce the reverse dot pitch, and the resolution is close to the level of the LCD splicing screen.
For LED display with small space, during transportation and installation, as long as it is subjected to external force, some light beads will fall off, resulting in dead lights of individual pixels, not emitting light or only showing monochrome, which has some reason with the encapsulation technology. As the encapsulation COB is the LED chip directly encapsulated in the recess of the PCB lamp, and then fixed with epoxy resin, so the whole lamp ball is a raised sphere, both smooth and hard, with better protection.
COB package product is to encapsulate the lamp on the PCB board, through the PCB board copper foil to quickly transfer the heat of the wick, and the thickness of the PCB board copper foil on the process has strict requirements, coupled with the gold plating process, almost will not cause serious light attenuation. Thus greatly extending the service life of the LED display.
When the LED display is encapsulated in COB, it has to ensure the lamp with no problem before refilling. It cannot replace a single bulb as an SMD package, so it is very demanding throughout the packaging process.
If it’s a traditional LED light package SMD, you can disassemble the unit board after a single bulb soldering repair. When it comes to the COB product, the maintenance will affect the surrounding lamps, maintenance is very difficult, and although its protection performance is better, there still will be a certain dead light rate, in this case, can only replace the unit board.
With the introduction of any packaging technology, there are reasons for its existence and space, of course, there will be imperfections. In the future, the development and promotion of technology will also reduce this impact. In short, COB LED screen technology is a future development trend, especially since its LED packaging space is small, for many users, the resolution is a very important technology.
LED COB, with LED standing for light-emitting diode and COB for chip on board, is a kind of lighting source using COB technology to improve light efficiency and reduce loss.
The LED COB chip-on-board technology is one of the most cutting-edge LED technologies in the lighting industry. It is an assembly method that directly mounts an array of diodes on a single substrate or a printed circuit board. Thanks to the assembly style, it appears like a lighting panel. No matter how many diodes are there, this design needs only one circuit and two contacts. Such configuration can accommodate nine or even more diodes on one chip, thus taking up less place while producing more brightness. Compared with older lights, it is relatively compact, efficient, and bright.
The gap between each diode is fairly narrow that the whole size of the LED COB light is quite compact. This provides great flexibility for utilizing it in diverse places.
In comparison to older lightings, COB LED chip has a higher watt ratio. It produces a large number of lumens per watt that can reach 100 while traditional one can only offer 20-50 lumens per watt.
The brightness comes from it is comparatively uniform. When illuminating a subject, it brings a clean and distinct shadow outline. This makes it well suited for creating special lighting effects in shooting, thus it gains popularity from photographers and filmmakers.
Because an array of light emitting diodes is mounted on one substrate, the density is higher than other LED chips, which means strong light intensity.
Because of design simplicity, COB light contains fewer components than traditional ones. Hence, the heat generated by the components is relatively low compared to conventional lights.
When talking about LEDs, what comes to people's mind is probably the Dual In-Line Package LED that consists of a chip built in a cylindrical hard plastic. It is the most conventional one but it is bulky and not efficient.
Actually, thanks to the rapid technology development, more efficient and more powerful LED COB and LED SMD become two main types of bulbs now. With SMD standing for Surface-Mounted Device, SMD LED light is composed of diode chips fused permanently on the circuit board. These two typical modules are often mentioned in the same breath. However, there are still many differences between them.
Chip LED COB can accommodate the LED COB array of more than 9 diodes while SMD LED can contain only 3 diodes. This accounts for the fact that the illumination of it is better than the one of surface-mounted device.
The former is generally capable of emitting 100 and above lumens per watt while the latter produces 50 to 100 lumens per watt.
LED COB panel merely has one circuit and two contacts, conducing to great simplicity and low failure rate for the whole device. Owing to the single circuit configuration, it needs multiple channel adjustments to realize the flexible effects of color. By contrast, SMD light has up to three individual circuits and six contacts on a single chip, which makes it not as compact as LED COB chip but capable of producing RGB results within one chip.
By the way, RGB stands for Red, Green, and Blue colors, which are added in a variety of ways to create multiple displays. In particular, the full intensity of each gives a White, and the quality of White depends on the primary light sources.
LED COB performs quite well in providing homogeneous illumination and SMD cannot achieve the same effect.
Generally speaking, the chip-on-board one can realize high-intensity homogeneous light emission while the other performs better in the flexibility of colors.
Professional manufacturers always utilize LED COB bulbs to make their products. Because of its luminous uniformity, you can use the portable COB LED light for photography and films. The COLBOR CL100 is such a good choice. It offers constant 100W output and features an intelligent temperature control system to ensure optimal working temperature.
Its unmatched compactness also provides great convenience for users to carry it around for outdoor and mobile filming especially when it is a COB rechargeable light.
Industrial sites like mining industries, car factories, and warehouses are typical examples that need those with high-density lumens for a coverage of large area. High intensity and great uniformity make COB chips well suited for this case.In the architectural field, LED COB is widely used for sophisticated display. It is convenient to use reflectors to control the light beam. COB ceiling lights and downlights are commonly seen in residential design. They are so lightweight that they can be easily installed without damaging the aesthetics of the ceilings. In addition, COB LED flex strips are often used to decorate the outer walls of the buildings.In agricultural and horticultural fields, chip-on-board grow light is popular because it contributes to the better growth and higher output of plants, vegetables, and flowers indoor.All in all, with great efficiency and outstanding effects, the LED COBs gain a foothold in the industry. It is palpable that it might become the future of lighting.
LUXEON CoB Finder
A CoB LED (or chip-on-board LED) is a single device with many LED chips mounted on a thermally efficient substrate placed below a uniform phosphor coating.
Anyone who walks through a store or home with recessed or track lighting likely experiences light from a chip-on-board LED (CoB). CoBs are widely used because they emit a bright white light output from a compact light source and are very efficient in a broad range of applications.
So what is a CoB LED, and how is it different from other types of LEDs?
CoB (chip-on-board) refers to the way in which the LED unit is constructed. The basic elements of white CoB LEDs are:
A CoB LED is a single device with many LED chips mounted on a thermally efficient substrate, or board. Each chip is a bare die – that is, the chip does not have its own leadframe, phosphor coating or lens. This means that the chips can be mounted extremely closely together on the substrate. The close placement of the LED chips allows for high intensity or light density to be emitted from a smaller area than is possible with single packaged LEDs. The CoB LED manufacturer then applies a uniform phosphor coating to the entire array of chips to convert the blue light to the required white color temperature.
An interactive 3D diagram of a CoB LED.A single CoB LED can contain hundreds of chips forming a dense array. This dense array enables a CoB LED to produce more light output from a smaller area than is generally possible with an array of packaged LEDs.
Using a single LED can result in simpler design and product as well as providing optical advantages for uniform light and efficient optics.
Electrical design is simpler because the CoB LED only requires a single two-wire power supply to the entire array of chips. The positive and negative terminals on a CoB LED are clearly visible in the picture of LUXEON CoB Core Range products above. By contrast, an array of packaged LEDs requires dedicated power supply traces to be routed on the PCB to each LED unit.
Production is simpler because the number of units to be soldered to the board will be lower if a CoB LED is used instead of an array of packaged LEDs.
Contact us to discuss your requirements of COB LED Market. Our experienced sales team can help you identify the options that best suit your needs.
Optically, a broad range of optics, usually reflectors, can be used with CoBs of different sizes to determine the direction and width of the beam such as with a spot or flood lamp.
Finally, a CoB LED’s color is potentially more consistent because a single phosphor coating is applied to the entire array of chips, whereas in an array of packaged LEDs, each LED unit has its own phosphor coating.
An example of CoB LEDs of various sizes is shown below.
Lumileds LUXEON CoB Core Range – High Density CoB LEDs.Lumileds supplies a comprehensive range of CoB LEDs for general lighting, as well as CoB LED products optimized for retail and hospitality lighting. More information can be found at lumileds.com/products/cob-leds/.
Looking for a game-changing lighting option that outshines traditional LED strips?
COB LED strip lights are sleek, high-performance lighting solutions for professionals and DIYers that deliver smooth, consistent illumination with zero hotspots. Whether you’re illuminating your home, upgrading your workspace, or adding flair to a commercial project, these strips can be a game changer!
Let’s dive into what makes these lights so special and why they’re worth considering over standard LED strips.
To understand what COB Lights are, we first need to define the COB LED meaning.
COB stands for Chip on Board, a technology that packages multiple LED (light emitting diode) chips together on a single circuit board.
Unlike traditional LED strips, which place individual bulbs apart on a strip, COB LEDs are tightly packed, allowing for a much smoother and more consistent light output with no visible hotspots or gaps.
The main difference between LED and COB LED comes from how the light emits. Standard LEDs (SMD LEDs) space apart on a strip, often producing visible hotspots or gaps. In contrast, COB LEDs have tightly packed chips that create a smooth, continuous line of light. COB LEDs also provide better brightness, energy efficiency, and heat management compared to standard LED strips.
The White Lily is one of the most popular COB strips on the market:
[product=continuous-led-lighting-strip-white-lilly-series|variants=K Ultra Warm White / 5m (16.4ft),K Ultra Warm White / Per foot,K Ultra Warm White / 100m (328ft),K Warm White / 5m (16.4ft),K Warm White / Per foot,K Natural White / 5m (16.4ft),K Natural White / Per foot,K Natural White / 100m (328ft),K Cool White / 5m (16.4ft),K Cool White / Per foot,K Warm White / 100m (328ft)]
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There are waterproof and non-waterproof versions, as well as 12 and 24V variants!
Seamless Lighting: Thanks to the densely packed LED chips, COB strip lights provide uniform illumination without the visible individual points of light that traditional LED strips often produce.
Energy Efficient: COB LEDs are highly energy-efficient, consuming less power while delivering brighter, more effective lighting than standard LEDs.
Excellent Heat Dissipation: COB technology ensures better heat management, allowing these strips to run cooler and last longer, even in enclosed spaces.
High Brightness: The densely packed LED chips produce higher lumen output, making COB LED strip lights ideal for task lighting and spaces that require bright illumination.
Higher Cost: While they do offer superior lighting, they also come at a premium compared to standard LED strips.
Installation Complexity: Due to the specialized nature of COB LED strips, installation may require additional expertise or accessories, especially for customized applications.
Limited Color Options: While COB LED strips are great for white or warm white lighting, they’re not as readily available in multi-color or RGB options compared to traditional LEDs.
When comparing COB LED strip lights to standard LED strip lights, the differences are clear:
Lighting Quality: Standard LED strips often produce visible hotspots and uneven lighting due to the spacing between individual LED bulbs. In contrast, COB LED strip lights create a continuous, seamless line of light with no breaks or gaps, offering smooth and even illumination. This makes them the perfect choice for spaces where aesthetic lighting is key, such as architectural accents or under-cabinet lighting in modern interiors.
Brightness: With their densely packed LED chips, COB LEDs deliver superior brightness levels, providing more light output per watt compared to traditional SMD LED strips. This enhanced brightness not only makes them more energy-efficient but also allows them to illuminate larger areas with fewer strips, making them a top choice for demanding lighting projects like retail displays or workspaces.
Heat Management: One of the standout advantages of COB LED strip lights is their excellent heat dissipation. The Chip on Board design allows for better heat distribution across the surface, reducing the risk of overheating and making the lights more durable over extended periods. This makes them a better choice for enclosed spaces or high-temperature environments where heat management is crucial.
Application Versatility: What is COB light used for? While both COB LED strips and standard LED strips offer versatility in various settings, COB LEDs excel in professional-grade installations or areas where aesthetics play a major role. High-end retail displays, workstations, and architectural projects favor their sleek, uninterrupted light flow, where both form and function are essential.
COB LED strip lights are the next-level solution for anyone looking for smooth, bright, and energy-efficient lighting. While they may be a bit pricier upfront, their superior performance, better heat dissipation, and clean light output make them a worthwhile investment for both residential and commercial lighting projects.
Whether you’re comparing COB LED lights vs. traditional LED strip lights, the differences are clear—if you want professional-quality lighting with minimal hassle, COB LEDs are the way to go.
If you’re ready to upgrade your lighting game, send us a message today!
Let’s answer some of the most common things people get confused about COB LED Strip Lights:
Are COB LED strips waterproof?
Yes, COB LED strips are available in waterproof versions. Look for products with an IP65 rating or higher, as this rating indicates protection against dust and water exposure, making them suitable for outdoor or damp locations.
What are the best brands?
When it comes to reliability and quality, Wired4Signs USA is one of the top names in the market for COB LED strip lights. Other reputable brands include Lumilum and HitLights, known for delivering consistent performance and durable designs.
What Are the Unique Uses of COB Lights?
COB LED strip lights are perfect for applications that require smooth, continuous lighting. They excel in architectural projects, under-cabinet lighting, display case illumination, and workstations where seamless, high-brightness lighting is critical. Their even light output also makes them ideal for photography and videography setups, reducing the need for external diffusers.
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