What are the packaging technologies of small-pitch LED displays? 

LED displays have become indispensable equipment for many industries. However, the packaging is very important in the LED display industry, and has now entered the development stage of micro-pitch, and small-pitch ED displays have become a pioneers in the reform of many enterprises. Exploring various packaging solutions with small spacing will become the guarantee of product quality! What are the relationships between these packaging solutions? Let’s follow this guide.

The packaging technologies for small-pitch LED displays

Surface mount (SMD)

Surface mount (SMD) packaging is to weld single or multiple LED chips to a metal bracket with a plastic “cup-shaped” outer frame (the outer pins of the bracket are connected to the P and N levels of the LED chip respectively). Liquid epoxy resin or organic silicone is filled inside, then baked at high temperature to form, and then cut and separated into individual surface-mounted packaging devices.

Brand new integrated packaging technology IMD (four-in-one)

LED display manufacturers have deep technical accumulation in SMD mounting technology, and the “four-in-one” packaging is a further development based on the inheritance of SMD packaging. SMD packaging contains one pixel in one packaging structure, while “4-in-1” packaging contains four pixels in one packaging structure. 

Although the four-in-one LED display uses a new integrated packaging technology IMD (four-in-one), its process still uses the surface mount process. The “four-in-one” Mini LED module IMD package combines the advantages of SMD and COB and solves problems such as ink color consistency, seams, light leakage, and maintenance. 

It has the characteristics of high contrast, high integration, easy maintenance, and low cost. It’s a better compromise on the road to smaller spacing. Currently, “four-in-one” Mini LED modules use formal chips due to cost considerations. As packaging manufacturers make more requirements for chips, such as “six-in-one” or even “N-in-one”.

GOB packaging technology

GOB is an improvement of SMD surface-mounting technology by LED display manufacturers. It improves the moisture-proof, waterproof, and impact-proof performance of the display. To a certain extent, it makes up for the lack of reliability and stability of surface-mounted small-pitch displays. 

However, this technical solution places extremely high requirements on the SMD surface mount process. Once there is a weak solder, it will be difficult to repair. It also takes time to verify whether the colloid will discolor, degumm, or affect heat dissipation during long-term use.

COB packaging technology

COB packaging is a method of attaching a bare chip to an interconnection substrate with conductive or non-conductive glue, and then performing wire bonding to achieve its electrical connection. COB packaging uses integrated packaging technology, which eliminates the need for a single LED device and the patching process after packaging.

It can effectively solve the problems of SMD-packaged LED screens. As the dot pitch continues to shrink, the process difficulty increases, the yield rate decreases and the cost increases. COB LED display makes it easier to achieve small pitches.

Leading small-pitch LED displays from Doitvision

COB series Small pixel pitch LED display

Features:

• Superior pixel pitch:0.95mm, 1.25mm, 1.53mm
• COB technology
• Improved Reliability
• Great Energy Efficiency

Brick Series Small pixel pitch LED display

Features:

• Flexible screen size： Standard panel size: 500×1000 mm / 500×250 mm
• Full range of pixel pitch：1.5mm / 1.8mm,2.6mm / 2.9mm / 3.9mm
• 100% front service, bracket free
• Smart mechanical design
• Creative shapes

GOB Series Small pixel pitch LED display

Features：

• Pixel pitch: 1.5mm, 1.8mm, 2.5mm
• GOB Technology Outdoor
• 5000:1 high contrast ratio
• 100% front service

Summary: 

The above is the relevant introduction to What are the packaging technologies of small-pitch LED displays. As a top professional LED display manufacturer, Doitvision has a variety of LED packages in small pixel pitch LED displays can be used for indoor and outdoor. If you are looking for small pixel-pitch LED screens, please do not hesitate to contact us now to get the latest quotation.