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gob led display screens

What is GOB LED Display Technology?

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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.

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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.

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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.

Outdoor LED Display Solution: P1.5 and P1.8 LED Display

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As the pandemic begins to wane, more and more outdoor activities are being done one after another, which is causing the outdoor display industry to once again see a resurgence. Since fine pixel pitch LED display is the current display technology, outdoor LED displays are gradually progressing toward ultra-high definition and multi-value added features.

The pixel pitch, or how closely the tiny light-emitting pixels can be arranged on the LED display, has become a major topic of discussion in recent years when it comes to high-definition displays for outdoor LED screens.

What is Pixel Pitch?

Pixel pitch describes the density of each tiny LED pixel on an LED display and is the vertical and horizontal distance between the center points of each LED pixel. Pixel pitch is sometimes referred to as pitch or dot pitch, abbreviated as “P” and measured in millimeters. Thus a P1.0 LED display denotes an LED display with an LED pixel pitch of 1 mm.

The fixed-size circuit boards and backplanes sequentially mounted with LED beads are called LED modules. These LED modules are seamlessly stitched and stacked together to form a large indoor or outdoor LED wall.

Pixel pitch is important because it affects the visual quality of the outdoor display. Since pixel pitch represents the amount of space between two pixels, a smaller pixel pitch indicates less white space between pixels, which equates to higher pixel density and higher screen resolution.

Images can have smoother edges and better detail thanks to higher pixel density and screen resolution. It allows the viewers to get closer to the screen and yet enjoy a high definition image without the distraction of identifying individual split pixels.

Development of Outdoor LED Display

In Past years, the development of LED screens accelerated. At the moment, LED inline lights hold the top spot in the market for outdoor LED displays. The special nature of the straight plug itself determines the large point spacing between the LED lights, typically 4 mm, 5 mm or even larger.

The first outdoor LED displays to hit the market were for huge billboards in shopping malls and on highways. The visuals on the screens looked fantastic from hundreds of feet away, but when you approached close, the text and photos looked horrible.

People are increasingly expecting to see the image of a direct-view LED display up close as outdoor LED screens are used more frequently. The demand for high-definition viewing effects has led to the trend of pixel pitch of outdoor LED displays downsizing. Therefore, the space is getting smaller and smaller as LED technology develops and manufacturing techniques improve.

The pixel pitch of outdoor LED screens, LED advertising screens, and outdoor LED signs has gradually decreased from P10 to P3, P2.5, and is now capable of P1.8 and P1.5.

● P1.5 LED Display

P1.5 LED display refers to the LED module in the LED pixel pitch of 1.5mm, pixel density of up to 444,444 per square meters and the minimum viewing distance of 1.5 meters.

● P1.8 LED Display

P1.8 LED display refers to the LED module in the LED pixel pitch of 1.8mm, pixel density of 288,906 per square meters, and the minimum viewing distance of 1.8 meters.

P1.5 LED displays and P1.8 LED displays provide more pixels to form an image on the display for spectacular high definition image quality when compared to P20 and P16 LED displays. P1.5 LED displays feature a closer ideal viewing distance and greater resolution as a result.

Additionally, the narrow pixel pitch LED display technology, represented by P1.8 and P1.5 LED displays, is renowned for its great brightness, energy efficiency, and extended life. Wider viewing angles are also made possible by this technology, allowing images to be clearly seen from farther away or from a variety of angles. Narrow pixel pitch LED display screen also provides a larger color range and higher brightness.

Fine pixel outdoor LED displays are now widely used in applications where people can see the screen up close, such as advertising in airports and rail terminals, seamless LED video wall centers in control and operations rooms, and in parking lots of public and private buildings.

RIGARD Narrow Pixel Outdoor LED Displays

RIGARD has overcome the technological barrier and achieved a reduced pixel pitch of P1.8 and P1.5 for outdoor LED display, while the pixel pitch of the majority of present outdoor LED screens can only accomplish P2.5.

1. Superior Image Quality

As more and more businesses turn to outdoor LED displays to enhance the customer experience, RIGARD’s P1.5 LED displays and P1.8 LED displays offer the ideal combination of superior image quality and intuitive ease of use. We use video processing technology combined with high dynamic range (HDR) image optimization to add clarity and detail to the presentation of featured content, providing your audiences with more realistic and memorable content.

2. High Definition Image Display

RIGARD’s P1.5 LED displays and P1.8 LED displays feature refresh rates up to 3840 Hz and brightness levels up to 4000 nits. By using custom algorithms to analyze and optimize brightness levels in each content scene, our narrow pixel outdoor LED display screens provide you with bright and high-definition image displays.

3. Accurate Color Representation

Low grayscale levels on conventional LED displays make it difficult to represent red, green, and blue colors properly and without artifacts. RIGARD, however, overcomes these difficulties with the outstanding outdoor LED display technology, which boosts image color fidelity by keeping constant R/G/B levels. As a result, even in low-light settings like outdoor stage LED displays at night, our P1.5 LED displays and P1.8 LED displays can display content in the best quality with consistent and accurate color performance.

4. Flexible Installation

RIGARD’s outdoor display screens have a compact design with a 45° angle for high-precision stitching for more installation freedom. With no need for aisle space, our P1.5 and P1.8 LED displays provide full frontal access to important signage components, while complementing back access makes maintenance simpler and quicker.

5. Durable Performance

Outdoor LED displays are subject to stricter environmental adaptation standards than indoor displays. The P1.5 and P1.8 LED displays from RIGARD include high-performance silicone lamp faces that are waterproof on both sides. It can withstand moisture and salt spray even in hostile environments, extending the service life. To further guarantee that the narrow pixel pitch outdoor LED screens can function correctly in all usage circumstances, we will conduct extensive high and low temperature tests as well as salt spray tests before they are sent out for display applications in unique geographic regions.

There are more chances than ever for high-definition LED displays to offer an engaging visual experience when people are outdoors, whether it be LED scoreboards and stage backdrops or LED advertising billboards and traffic signs. And RIGARD narrow pixel pitch outdoor LED display solutions are made to suit your requirements.

The Guide To Small Pixel Pitch LED Display

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       1, Packaging technology:

Above P2 led display screen generally uses SMD 1515, 2020, 3528 of the lamp, LED pin shape using J or L package. Side welding pin, welding area will be reflective, ink color effect is poor, it is necessary to increase the mask to improve contrast. The density further increases, the L or J’s encapsulation cannot satisfy the application demand, must adopt the QFN package method. This process is characterized by no lateral welding pins, no reflective welding area, which makes the color rendering effect very good.

In addition, the whole black integrated design molding, the contrast of the picture increased by 50%, showing the effect of the application of the image contrast to the previous display better.

　　2, Mount Technology:

Small pixel pitch LED display of the RGB device location of the small offset will result in the display of the screen is uneven, it is bound to require a higher precision mounting equipment.

　　3, Welding technology:

Reflow soldering temperature rise too fast will lead to uneven wetting, it is bound to cause the device in the wetting imbalance in the process caused by migration. Too much wind cycle can      also cause the displacement of devices. As far as possible to choose more than 12 reflow soldering machine, chain speed, temperature rise, cycle wind as a strict control project, that is, to meet the requirements of welding reliability, but also reduce or avoid the device shift, as far as possible to control the demand range.

Generally, the 2% range of pixel spacing is used as the control value.

       4, Printed circuit board technology:

With the development trend of small pixel pitch LED display, the 4-layer, 6-layer Board is adopted, the printed circuit board will adopt micro-hole and buried hole design, printed circuit graphic wire thin, micro-porous narrow spacing, processing in the mechanical way drilling technology has been unable to meet the requirements,

The rapid development of laser drilling technology will meet the micro-hole processing.

　　5, Printing technology:

Too much, too little solder paste volume and printing offset directly affect the small pixel pitch LED display lamp welding quality. The correct PCB pad design needs to communicate with the manufacturers to implement the design, the screen plate opening size and the correct printing parameters are directly related to the amount of solder paste printing. General 2020RGB devices using 0.1-0.12mm thickness of the electric polishing Laser Steel Network, 1010RGB the following devices recommend the use of 1.0-0.8 thickness of the steel net. The thickness, opening size and the amount of tin increased.

Micro-spacing LED welding quality is closely related to solder paste printing, with thickness detection, SPC analysis and other functions of the printing presses will play an important role in reliability.

　　6, Screen assembly:

Assembly of the finished box needs to be assembled into a screen to display the small screen, video. However, the size tolerance and assembly accumulative tolerance of the box itself can not be neglected in the small pixel pitch LED display assembling effect. The recent device pixel spacing between box and box is too large and too small will result in the display of dark lines, bright line. Dark lines, bright line problem is now small pixel pitch LED display can not be ignored, the need to overcome the difficult problem.

Some of the companies through the Paste 3m tape, box micro adjustment nut Adjustment to achieve the best results.

　　7, Cabinet assembly:

The box is formed by splicing different modules, and the smoothness of the box and the gap between the modules are directly related to the overall effect of the box assembly. Aluminum plate processing box, cast aluminum box is the current application of a wide range of box types, flatness can reach 10 wire. The stitching gap between modules is evaluated by the nearest pixel spacing of the two modules, two pixels too close to the light line, two pixels too far can lead to dark lines.

Before assembling, it is necessary to measure and calculate the assembly seam, then use the relative thickness of the metal sheet as the fixture prior to the assembly.

　　8, System Card selection:

Small pixel pitch LED display light and dark line and uniformity, color difference is led device differences, IC current differences, circuit design layout differences, assembly differences, such as the accumulation of complaints, some system card companies through the software correction can reduce light and dark lines and brightness, chroma uneven. Select High-performance System Card, the micro-spacing LED display brightness, chroma correction, so that the display screen to achieve better brightness and chroma uniformity, achieved a better display effect.

ABOUT RIGARD LED-China led display screen solution supplier
RIGARD LED as a custom-solution-based LED display manufacturer, provides robust and creative led screen products, timely and professional service as our industry-leading LED screen technologies and integrated LED solutions. Driven to be excellence to meet your standards and special requirements, RIGARD LED provides a one-of-a-kind design for your rental and fixed installation including stores, events, and tours, etc. through our award-winning line of LED video walls and LED video screens. Working with engineers, designers, architects, and consultants, RIGARD LED is eager and proud to develop custom LED solutions for every customer while also providing top-tier customer support service no matter how small the led display is. For more details on the complete line of RIGARD LED LED video screens and video walls, please visit RIGARD LED at rigardled.com, find us on Youtube, Facebook, or get us through direct Email, info@rigardled.com .