Posts

gob led display screens

What is GOB LED Display Technology?

in /by

LED packaging technology is constantly being improved in response to the increasing demand for small pitch LED screens, such as Mini LED and Micro LED, that can deliver ultra-high quality image display. 

Due to its inherent deficiencies in protection and point source display performance, the initial SMD technology is no longer able to fulfill the application of all scenarios. COB technology, as a newcomer, has not yet achieved mass production due to high technical costs, poor color separation, and the inability to mix lights. In this context, the GOB LED display technology, which has been improved from the SMD packaging process, has come into being.

零售商的透明 LED 屏幕

SMD vs COB vs GOB LED Technology

● What is SMD LED Display?

Surface Mount Device, often known as SMD, is the packaging of lamp cups, brackets, chips, leads, epoxy resin and other materials into different sizes of LED beads, which are then directly soldered on printed circuit boards (PCBs).
Due to the lack of protection on the surface of SMD-packaged LED screens, the lamp beads are exposed to the outside environment, which raises the danger of color shift, the failure and damage of LED beads.

● What is COB LED Display?

By encapsulating the LED chip directly on the PCB rather than the LED lamp, Chip on Board (COB) is an advancement of SMD technology that lowers the potential risks that SMD LED displays may have. However, because of the high technical cost and the challenge of maintaining color uniformity and chromatic aberration, COB LED screens are currently difficult to mass produce.

● What is GOB LED Display?

Glue on Board (GOB) is a new revolutionary packaging method that outperforms SMD technology by using glue on the PCB to encapsulate the LED modules. Essentially, GOB LED display technology is an analog of module packaging. It uses a proprietary transparent epoxy adhesive applied to the surface of PCB modules that have been soldered with thousands of SMD lamps to form a special shield. GOB display technology provides a solution to the LED beads protection.

The highest benefit of GOB LED displays over SMD is the high level of protection for the LED beads, which enables LED screens to adapt to any challenging environment and attain true moisture-proof, water-proof, dust-proof, impact-proof, and UV-proof properties. In contrast to the high-cost COB technology, GOB LED display not only achieves mass production at a lower cost but also successfully addresses issues like poor surface flatness, poor color separation and inability to mix lights of COB.

gob led显示屏

Advantages of GOB LED Display

  1. Superior Durability – waterproof, moisture resistant, dustproof, shockproof, UV resistant

Splashing water, moisture, or dust can easily enter and gather in the gaps of the LED module if the surface is left untreated and exposed to the outside environment. In addition to lowering the quality of the image display and making it more difficult to clean the LED display, this will also make the LED chips or beads more prone to damage. What’s worse, the LED chip is susceptible to accidental collision damage while being handled, which will result in display malfunction across the LED display screen. 

The transparent epoxy adhesive on the surface of the GOB LED displays can effectively shield the LED chips or beads from any harsh external elements like water, moisture, dust, and UV radiation. Moreover, the high density of the glue makes the GOB display screen shockproof, greatly reducing the risk of potential breakage due to collision during installation and delivery.

  1. Excellent thermal conductivity extends service life

In addition to superior transparency, GOB LED display screens also have excellent thermal conductivity, which means that the heat generated by the LED units drains more quickly, significantly prolonging the life of the LED display.

  1. Cost-effective

GOB LED displays are more reliable and durable than traditional LED display screens, which results in a longer lifespan and lower maintenance costs. As GOB LED display screens don’t require as much maintenance and replacement as traditional LED displays, they are more economical.

  1. Maintain superior image quality

The brightness, color, or clarity of the image displayed by the GOB LED display screen is not diminished, even better than the conventional ones, as a result of the superior transparency of the glue on board.

  1. Easy to install

GOB LED displays are easier to handle and quicker to install since they are coated by a clear epoxy adhesive, which makes them less brittle.

  1. Easier to clean

Because of the clear epoxy covering the surface for smoothness, the cleaning of GOB LED display screens is quick and simple with a soft cloth and light cleaning agents. Furthermore, GOB technology shields the LED units from harsh cleaning products.

  1. Wide range of applications

The flexibility and versatility of GOB LED display solutions is unparalleled. Since GOB LED display technology combines the advantages of traditional SMD and COB, while compensating for their shortcomings. GOB LED displays can be used in a variety of scenarios, such as small pitch LED screens, rental LED screens, etc., driving revolutionary changes in the entire LED display industry.

Application of GOB LED Display

  1. Fine Pitch LED Display Screens

The continuous development of the narrow pixel pitch LED display market has taken GOB technology to the next level. Each LED bead or chip in fine pitch LED display screens is spaced closer together and more densely throughout the PCB. The display industry of today has made it possible to produce LED screens with pixel pitches less than 1mm and pixel pitches between P1.2 and P2.5 are already in mass production.

The tiny LED beads and LED chips are easily damaged during shipment, installation, and operation with such a small pixel pitch. GOB LED display technology is the perfect solution to this problem, as the glue on the board protects the LED beads or ships well, which can be used for smaller pixel pitch LED display screens.

会议室用小间距 LED 屏幕

With the aid of cutting-edge GOB LED display technology, RIGARD, a specialist in fine pitch LED display solutions, has been able to produce and manufacture LED display screens with smaller pixel pitches, such as P1.2 LED displays. In fact, we provide P1.2, P1.5, P1.8, and P2.5 LED displays for indoor and outdoor UHD applications, depending on the various needs of our users, which are intended to give your audience a dazzling visual feast and significantly advance your business.

  1. Rental LED Screens

The rental LED screens that are set up on the stage require regular installation, disassembly, packaging, and movement, as we are all aware. In this case, it is challenging to prevent damage to the LED lights from unintentional impacts, even with the highest quality and most expensive LED display screens. It also raises maintenance costs because they need frequent repairs if damaged. However, with GOB LED display technology, Rental LED display screens can be well-protected and maintenance expenses can be reduced.

RIGARD is a reputable name in rental LED screens as well as a full-service provider of LED display solutions. With GOB display technology, our P1.5, P2.6, and P2.9 LED displays have successfully delivered flawless image displays for thousands of stage displays around the world, resulting in effective cost savings and business growth.

  1. Transparent LED Screens

In commercial settings like retail stores, malls, and nightclubs, transparent LED display screens are becoming more and more common. Transparent displays utilize extremely small PCBs in order to achieve high transparency while keeping high resolution, making the lamps and PCBs exceedingly brittle and susceptible to damage. GOB display technology provides protection for the entire hollow module of transparent LED screens, lowering the chance that the screen would be damaged in a collision. 

  1. Flexible LED Screens

Today, a variety of curved and cylindrical LED video walls are produced using flexible LED screens. GOB LED display technology can boost the reliability of flexible LED display screens by shielding them from moisture damage and scratches, even if the installation is often fixed.

  1. Floor LED Screens 

Typically, there is a layer of acrylic cover on the surface of floor LED screens for interactivity to prevent stepping on. However, the acrylic cover has poor light transmission, which has an impact on the visual effect. The floor LED display can be best protected from being trodden on by GOB display technology, which not only offers greater light transmission and visual effect but also has waterproof, shockproof, and dustproof features. 

On the other hand, there are gaps between the LED beads, the traditional floor LED for interactivity will show grainy pixel dots, which negatively affects the interactive experience. By changing the display screen from a point light source to a surface light source, GOB LED display screen may produce a more uniform luminescence, UHD display, and wider viewing angle.

  1. Irregularly shaped LED Screens

An irregular shape of the LED display screen is typically needed to build a special ambiance in clubs, pubs, casinos, and other locations. These locations are packed though, so collisions, spilling food or drinks on the display screens are bound to happen, all of which could harm the LED display screen. Due to its shock, water, and moisture-resistant properties, GOB LED display technology shields irregularly shaped LED displays from potential harm brought on by pressure, water, food, etc.

As an innovative LED packaging technology, GOB LED display breaks the barrier of traditional SMD LED display and adds more vitality to the LED display market by virtue of lower cost than COB LED display towards smaller pitch display.

If you are looking for small pitch LED displays encapsulated by GOB technology, do not hesitate to contact RIGARD. As an expert in LED screen technology and integrated LED solutions, RIGARD keeps up with the industry trend and masters the most cutting-edge GOB LED display technology to break through the technical barriers of fine pitch LED display screens in order to help your business development.

What is IMD LED Display and Difference Between IMD and COB Encapsulation?

in /by

In recent years, the popularity of 5G network, the upgrade of digital services, the application of conference visualization, the in-depth practice of smart cities and the continuous expansion of the security monitoring market stimulate the development of HD display market segmentation. HD display, which is being upgraded from 4K display to 8K display, is gradually becoming the development vane of the current display technology.

Small pitch display technology is the key to making this market segmentation with great future possibilities. The current LED display industry has broken through technological innovation and can produce LED displays with pixel pitch less than 10mm. Since its introduction, the small pixel pitch LED video wall has become the most popular display solution in the indoor display market with its advantages of high brightness, high resolution, high gray level and high contrast, widely used in conference rooms, lecture halls, government service centers, etc.

As the size of LEDs gets smaller, the ability to pick up and accurately place it becomes increasingly difficult. The challenges of packaging technology contribute to high cost, making small pixel pitch LED video walls still have a long way to go to achieve mass production. The LED display industry has been looking for newer ways to reduce costs and allow for smaller pixel pitches.

Historically, LEDs were diced from epitaxial wafers, placed in surface-mount packages, wire-bonded at the appropriate location, and encapsulated in epoxy or silicon, which is known as SMD technology. The changes in the way LEDs are packaged can be described as a new packaging technology that packages the LED chip, rather than the LED lamp, directly onto the PCB, known as COB.

In the past few years, SMD and COB technologies have been dominating the small pixel pitch display market. We have also always heard opinions about COB winning over the traditional SMD with various technical advantages. However, to this day we find that the most popular solution for small pixel pitch LED displays represented by P0.9 LED displays is neither SMD nor COB, but IMD.

What is IMD LED Display?

IMD (Integrated Matrix Devices) refers to the packaging of two, four, six or more groups of RGB diodes in a small unit, also known as “N-in-1”. Typical IMD models are generated as 2*2 or 4-in-1 packages, where each 4-in-1 package includes four SMDs and each SMD includes three chips (red, green, and blue).

IMD is an intermediate product between SMD and COB, combining the advantages of both. IMD is a new generation of LED packaging technology that meets the current market demand in terms of both appearance and performance.

Differences between IMD and COB/SMD

Higher reliability and protection performance

LED display screens must be transported over long distances to reach the client, and they will inevitably be bumped during the process of installation to put into use. Therefore, the protection of LED display screens is one of the important factors considered by LED display manufacturers and the rental market. As both IMD and COB are using integrated packaging technology, the hermeticity and reliability have made a qualitative leap compared with the traditional SMD, meeting the requirements of customers at this stage.

Smaller pixel pitch

SMD technology has physical limitations that make it the best solution to produce LED displays with a pixel pitch close to 1.2mm. Further reduction in pixel pitch would result in high costs. IMD technology, on the other hand, can achieve mass production of smaller pixel pitch LED displays, such as P0.8, P0.6, P0.4 LED screens, in a short period of time and at a very low cost.

 More stable color consistency

IMD inherits the long-accumulated sorting technology of SMD, which makes it have good color consistency in display effect compared with current COB, without the problem of poor appearance and lighting uniformity. Although COB has also improved in color consistency, it is not as stable as IMD, and sometimes there are batches of errors. To reduce this risk, COB usually uses fixed chips for chip bonding. However, this approach does not guarantee that the optoelectronic parameters of all LED components are within a reasonable range after repair, which requires engineers to perform point-by-point calibration. As a result, COBs cost more than IMDs to achieve the same level of color consistency.

Lower maintenance costs

Controlling costs to create more value for downstream customers is essential. When a local area of the LED display screen is damaged, LED screen with IMD technology only need to remove a single damaged point for maintenance, while those with COB technology need to remove the entire LED module for maintenance, which undoubtedly increases maintenance costs.

All in all, IMD offers better crash protection and more possibilities for smaller pixel pitches than conventional SMD. Compared with COB, IMD has higher color consistency and lower maintenance cost, especially when only a single diode needs to be repaired. IMD combines the advantages of traditional SMD and COB to properly solve the problems of damage protection, black level consistency, seamless stitching, light leakage, and maintenance. With higher contrast, higher integration, easier maintenance and lower cost, it is the ideal technology for the evolution to finer pitch.

With the above information, you may notice that IMD technology is superior to COB and SMD technology for small pixel pitch LED displays. If you are looking for small pixel pitch LED displays, Mini LED displays, or even Micro LED displays, you can refer to RIGARD’s narrow pixel pitch series. We have a global reputation for gaining significant market share in many types of small pixel LED displays with our mastery of IMD and COB technologies. Need more information about these small pixel pitch LED screens and IMD technology? Contact RIGARD immediately and we will be happy to assist you!