What is COB Technology?

With the rapid development of science and technology, LED display technology is also constantly improving. The recent years, a new technology about LED display emerges and is favoured by the costumers. That’s COB technology.

COB technology is the abbreviation of Chip on Board Technology, which means that solder LED chip on PCB and seal with epoxy resin, especially applied to the small pitch project, this technology is in the good graces of many customers, and also widely praised.

The operating principle of COB technology principle：

Traditional SMD package LED display has a lot of processing technology, especially in the reflow soldering process, SMD lamp bead stent and cyclohexane resin in high temperature conditions with different expansion coefficients, easy to cause the stent and epoxy resin encapsulation shell off, and in the latter part of the use of the existence of a gap, and gradually appeared dead lamp phenomenon, resulting in a high rate of product failure. The COB package due to the absence of reflow lamp processing technology, even if the later reflow IC process, the diode chip has been cured with epoxy resin adhesive protection, to avoid the welder high-temperature welding caused by the lamp bead bracket and cyclohexane resin between the gap, so the stability of higher.

The features of COB:

• Stability: Mini chip directly soldered on the PCB can reduce the risk of soldering wire and improve the stability.
• High Contrast: Smaller chip with high brightness, no electrode masking, better light output consistency, no electrode and solder line reflections higher contrast ratio
• High Protection: Protection grade lP65, waterproof, dust-proof, anti-oxidation, anti-static, anti-shock
• High Refresh: Ultra-wide viewing angle, horizontal and vertical viewing angles reach 170°,Low blue light damage, UHD, 3840HZ high refresh, full colors
• Good Performance: No particles for close-up viewing, better display effect, and more perfect viewing experience!

As COB LED screens have high pixel density, high brightness and high contrast, they can be widely used in many fields. The main application scenarios include:

• Meeting Room: COB LED screen can be used for the display of meeting site, including the display of meeting agenda, speaker information, meeting theme, etc. Its high-definition and high-contrast characteristics can make the picture of meeting site clearer, which helps to improve the efficiency and effectiveness. The effect of the meeting.

• Digital signage: COB LED screen can be used for electronic signage, such as navigation and information prompts in airports, stations, hospitals and other places. Its high brightness and high definition can make the signage information more vivid and clear, and real-time update and multi-language display can be realized.
• Commercial Advertisement: COB LED screen can be used for commercial advertisement, such as advertisement in shopping malls, supermarkets, stations and other public places. Its high brightness and high contrast can make the advertising screen more eye-catching and attract more attention.

• Indoor Decoration: COB LED screen can be used for indoor decoration, such as shopping malls, hotels, exhibition halls, etc. Its ultra-thin design and high pixel density make the screen will not take up too much space, and it can present a variety of rich patterns and effects, and be able to enhance the indoor decoration effect.

• Stage performance: COB LED screen can be used in various performance occasions, such as concerts, concerts, musicals, etc. Its high pixel density and high brightness can make the performance picture more clear and realistic, and can achieve a variety of rich special effects according to the needs.

• Meeting Room: COB LED screen can be used for the display of meeting site, including the display of meeting agenda, speaker information, meeting theme, etc. Its high-definition and high-contrast characteristics can make the picture of meeting site clearer, which helps to improve the efficiency and effectiveness. The effect of the meeting.

Typical Applications of COB

Case1：

The meeting room area is about 54 square meters, the requirements of the display screen which has resolution up to 2K and can be removed flexibly, to meet the needs of the meeting of about 20 people.

Solution:

LEDFUL CPoster，Assembled COB technology with P0.9 display.

Size：1800×1012mm

Resolution：1920×1080

Case 2:

The screen support the accusation centre all seat computer signal at the same time, synchronous to the display, and can be arbitrarily accessed, seamless switching, power supply, signal double backup

Solution:

Assembled LEDFUL COB technology with P1.25 display

Size：14.4×2.7 meters

Resolution：11520×2160（3×4K）

Here is link to COB series product for more details:

https://www.ledful.com/led-display/u-series-fine-pitch-led-display/

If you would like to know more about COB technology, please contact us.