What is a cob LED display screen?
COB (Chip On Board) LED display is a new type of packaging display technology that directly welds RGB chips onto the circuit board.
After bonding the LED chips, electrical connections are achieved through bonding technology, and finally, they are sealed with epoxy resin to form independent unit modules.
By packaging the LED chips with smaller spacings, the display effect and performance are improved.
COB LED Display Product Series
With the continuous development of COB LED display technology, today it is no longer an unattainable high-end display product. In terms of product quality, stability, etc., there has been a significant improvement, while the price has dropped significantly. This makes it acceptable to the market and increasingly popular among people. COB LED displays can solve the pain points of SMD LED display and enhance the display effect. Therefore, we have derived a series of COB LED display products to enable COB LED displays to be applied in a wider range of fields.
320x160mm is currently the best-selling COB LED display module on the market. It covers pixel pitches of P1.25/P1.53/P1.86, and is compatible with the mainstream structural mounting hole positions in the general market. Featuring a high refresh rate of 3840Hz (7680Hz optional), low power consumption, and clear image quality, it can achieve HDR image quality and seamlessly replace SMD LED display module
COB LED displays for fixed installation are assembled using 600×337.5mm unit cabinets, which can be arbitrarily spliced into custom sizes to achieve 2K/4K/8K HDR high-definition display quality as required. Each unit module measures 150×168.75mm, with pixel pitch options covering P0.93/P1.25/P1.56/P1.87. Featuring a high refresh rate, the displays adopt die-cast aluminum cabinets formed by CNC machining—boasting high precision for seamless splicing.
Our COB LED Totem Display is a high-definition display device developed for the commercial sector, which can replace traditional LCD monitors. In addition to the waterproof, anti-collision, and anti-knock properties brought by COB (Chip On Board) technology, it also features high brightness and clear image quality. It does not take up space in your mall booth, is more compact and exquisite, and can attract customers’ attention—making it highly suitable for commercial advertising.
COB LED Display Production Process
Fixed LED chipThe LED chips are fragmented by using the expansion machine, and then silver paste is applied on the back of the expanded chips.
The LED chips with silver paste on their backs are first pressed onto the PCB board using a bonding machine, and then placed in a heat-cycling oven to solidify the silver paste. Thus, the LED chips are permanently fixed onto the PCB.
Quartz CrystalUsing professional film coating equipment, the pre-prepared film coating material is applied to the display screen to protect the performance of the LED chips.
SMTThe driving chips on the back of the LED module are connected with the LED chips and the driving circuits through SMT (Surface Mount Technology) assembly technology, thereby achieving electrical performance.
Test cob led displayThe produced COB LED display screen will undergo a 72-hour light emission test as well as high and low temperature tests.
cob LED screen PackagingThe fully tested and qualified COB LED display will be vacuum-packed for shipment.
COB LED Display VS SMD LED Display
Excellent Display Performance
Superior Protection Performance and Reliability
COB (Chip-on-Board) technology involves directly soldering LED chips onto a PCB (Printed Circuit Board) and encapsulating them with epoxy resin. It boasts excellent anti-collision, compression resistance, dustproof, waterproof, and moisture-proof properties, thus delivering superior protection performance and enabling reliable operation in any harsh environment.
Excellent Performance
- COB LED display boast ultra-high brightness ranging from 600nit to 1500nit
- Low-power operation with an average consumption of less than 1kW·h/㎡
- Ultra-high contrast ratio of 6000:1
- Extra-wide viewing angle of up to 160° (horizontal/vertical)
- Low surface temperature maintaining an average of 20℃ under normal conditions
- Wide voltage support (AC110V/AC220V) suitable for use in any country
- Easy installation with front maintenance support
Installation of COB LED Display
Production Details of COB LED Display
- Why is the COB LED display becoming increasingly popular? Besides the significant reduction in price, another reason is its high level of industrialization. COB adopts fully automated packaging technology, utilizing high-speed die bonders, precision glue dispensers, and AOI (Automated Optical Inspection) testing equipment to achieve fully automated production, with a yield rate of ≥99.5%. In contrast, the yield rate of SMD LED displays is ≤98%.
- Pricing of COB LED Displays: With the release of production capacity for COB LED displays at this stage, their prices have further decreased. Taking the same pixel pitch (P1.25) as an example, the current price of SMD LED displays is on par with that of COB LED displays. In this case, which one would you prefer to choose? We welcome you to discuss this with us.
Application Scenarios of COB LED Display
Commercial advertising display screens are the primary market for LED display applications. LED displays facilitate the presentation of advertisements and brand promotion. As the demand for high-definition displays continues to grow, COB-based high-definition displays will dominate the commercial advertising market. When a high-definition image is presented before your eyes, will you remember the brand vividly? For instance, a COB LED display we installed in a shopping mall in New York helped attract more foot traffic—with the advertised videos boosting customer flow by 30%.
Conference and office spaces are typically confined areas, which calls for an LED display with higher resolution. COB LED displays, however, boast ultra-high definition. Beyond meeting visual performance needs, they also offer superior contrast—this makes the screen appear deeper black, prevents glare, and eliminates eye discomfort during close-range viewing. Additionally, they feature an extra-wide 170° viewing angle, ensuring clear visibility for people from any direction and infusing the entire office with a sense of technological sophistication.
The large-screen COB LED display in entertainment and leisure clubs delivers an incredibly immersive audio-visual experience. With its ultra-high-definition image quality, it lets you dive deep into live sports events and entertainment performances—there’s nothing more thrilling than sipping a beer while watching an exciting football match!
COB LED displays are suitable for Monitoring and Command Dispatch Centers. They can be seamlessly spliced into 4K terminal displays, enabling real-time display of footage from multiple surveillance cameras. With their high-definition performance, these displays can clearly restore details in monitoring scenes, facilitating security personnel in detecting abnormalities promptly.
Schools and churches, as high-foot-traffic gathering places, have non-negotiable core requirements for LED displays: high definition, wide viewing angle, stable and reliable quality, and easy operation. COB LED displays, with their advantages of seamless splicing, low-blue-light eye protection, and high-protection stability, are the preferred LED display solution for schools and churches.
FAQ
This section includes some common questions raised by customers. If your question is not listed here, please contact us immediately, and we will answer you directly.
Yes, we are a factory located in Shenzhen, China, with over 10 years of experience in LED display production. We manufacture various types of LED displays, including indoor, outdoor, rental, and COB models. In terms of price, our products are highly cost-effective, and we offer you the lowest price.
Yes, we provide both OEM and ODM services. Please inform us of your specific requirements or application scenarios, and our professional team will assist you in delivering a comprehensive solution.
Yes, nearly all our COB LED displays have obtained CE, RoHS, ETL, and UL certifications.
Yes, we offer free samples for your testing purposes. Please contact our sales department!
If you purchase COB LED modules, we will first seal them in anti-static aluminum foil bags. The sealed modules are then placed into cartons, separated by EPE foam (expandable polyethylene foam) inside, and finally packed in wooden crates for shipping.
Our COB LED displays come with a 3-year free warranty and lifelong maintenance support.
Over 100,000 hours.
We have professional technical personnel available 24/7 to provide full-process guidance for installation and commissioning. Additionally, we have overseas technical teams that can offer on-site installation services.
The lead time is determined based on the size of your required display area. Please consult our sales team for details!