介绍
As an important medium for modern visual communication, the picture quality and stability of LED显示屏 are directly related to the effect of information transmission.
However, the “bad pixel” problem has always been a key factor affecting the quality of LED display screens.
To solve this problem, GOB (Glue On Board) packaging technology came into being, providing an innovative path to eliminate “bad pixels” and improve display quality. Let’s take a look at the specific reasons in the article.
1. What is the "bad pixel" phenomenon of LED display screens?
Bad pixels, in simple terms, are those abnormal points on the screen. They may be:
Bright spots: These are the particularly bright points on the LED display screen, like a small light bulb shining on the screen, usually white or other colors.
Dark spots: In contrast to bright spots, these points are particularly dark and almost invisible, especially against a dark background.
Uneven color spots: The colors on the screen are uneven, and it looks like someone accidentally spilled paint on it.
1). How do bad pixels come from?
- Problems during production:
Dirty things or impurities may be mixed into the LED display screen during production. Or the quality of the LED light itself is not good, and problems arise during use.
- 环境因素：
It may also be caused by static electricity. If static electricity is discharged accidentally, the LED screen may have uneven display and bad pixels. In addition, temperature and humidity will also affect the screen’s life span. If it is in an inappropriate environment for a long time, the screen will easily malfunction.
- Aging after long-term use:
Like people, LED screens will age after long-term use. After aging, the screen performance declines, the brightness and color may not be right, and bad pixels will follow.
2). What are the effects of bad pixels?
- Impact on seeing things:
There is a bad pixel on the LED screen, just like when you read a book, and you can’t see a word clearly; it makes people feel uncomfortable. Especially when you are looking at important things, bad pixels may make you read wrong or miss information.
- Screen life is discounted:
Once a bad pixel appears, it means that a part of the LED display is no longer working. This is like your shoes have a hole in them. Although you can still wear them, they are definitely not as good as new ones. The same is true for LED displays. If there are too many bad pixels, the life is short.
- Affecting image:
If you are a merchant using LED screens to display products or do advertising, and there is a bad pixel on the screen, it will be ugly. When customers see it, they will think, “Oh, this screen is broken; is this merchant reliable?” The image will be greatly reduced.
2. A brief introduction to GOB packaging technology
In simple terms, GOB packaging technology fixes LED lamp beads on the circuit board and then uses special glue to fill the gaps between the lamp beads.
Imagine that you have an LED display with many small lamp beads on it. If these lamp beads are directly exposed to the outside, they are easily damaged, such as water ingress, dust ingress, collision, etc.
GOB packaging technology puts a layer of “armor” on these small lamp beads and wraps them all with that layer of magic glue to protect them tightly. Make the entire display more solid and more reliable.
1). The power of GOB technology
More solid: With the protection of that layer of glue, the lamp beads are not easy to fall off, and the entire display is more stable.
More comprehensive protection: This layer of glue is not just an “armor”; it is also waterproof, moisture-proof, dust-proof, anti-collision, and anti-static. He is simply an all-round player!
Better heat dissipation: Don’t look at the thickness of this layer of glue; it actually has very good thermal conductivity. The heat generated by the lamp beads can be quickly dissipated through the glue so that the lamp beads will not be damaged due to overheating.
More beautiful picture: This layer of glue also has a magical effect, which is to make the light spread more evenly. In this way, the picture of the display screen is clearer, more transparent, and looks very comfortable.
2). Which is better than the traditional packaging method?
We all know that in addition to GOB packaging technology, there are also traditional packaging methods such as SMD and COB. How does GOB compare with them?
- Compared with 贴片机:
SMD is to stick the lamp beads directly on the circuit board and then weld them. Although this method is simple, the protection performance is relatively poor and the lamp beads are easily damaged.
GOB, on the other hand, adds a layer of glue protection on the basis of SMD, which greatly improves the protection performance, and of course the cost is slightly higher. But then again, the extra money is definitely worth it!
- Compared with COB:
COB is to fix the chip directly on the circuit board and then encapsulate it with glue. This method has high integration and good display uniformity, but the cost is relatively high. Although GOB may be slightly inferior in integration, it is not inferior in protection and heat dissipation performance! And the price may be more affordable!
3. How does GOB packaging technology eliminate "bad points"?
- Simplified and precise packaging:
GOB technology first makes a major transformation of the packaging structure of the LED display, making it more streamlined and more precise. Think about it: the previous packaging method is like putting several layers of clothes on the LED lamp beads, which is not only cumbersome but also prone to problems.
GOB technology is to directly put “tights” on the lamp beads and fill the gaps between the lamp beads with a layer of special high-transparent resin. In this way, not only is the packaging process simplified, but the packaging accuracy is also improved so that all the “bad points” caused by position deviation or improper installation disappear!
- “Strong glue” for reinforcement:
When it comes to reinforcement, GOB technology has put in a lot of effort. It uses a special optical, thermal conductive nano-level glue material, which is like a strong glue, tightly sticking the lamp beads and circuit boards together.
In this way, even if the display screen is hit or vibrated, the lamp beads will not fall off or be damaged easily, greatly reducing the “bad points” caused by external forces.
- Heat dissipation experts come to help:
LED lamp beads generate a lot of heat when working. If the heat dissipation is not good, they are prone to aging or damage, forming “bad points.”
GOB technology has thought of this for a long time. The glue material it uses not only has good thermal conductivity but also can dissipate heat in time, allowing the lamp beads to maintain a comfortable working temperature.
In this way, the life of the lamp beads is greatly extended, and the “bad points” caused by aging are much less.
- Easy and fast maintenance:
Finally, GOB technology is also thoughtful in terms of maintenance. If there is a “bad point” on the display screen, the maintenance personnel can quickly locate the problem and quickly replace the problematic lamp beads or modules.
This design not only simplifies the maintenance process, but also reduces the maintenance cost, allowing users to enjoy high-definition display while also enjoying convenient services.
4. What will the future of GOB technology for LED displays look like?
Everyone may think that GOB technology for LED displays is very powerful. However, the future development trend of this technology is closely related to our lives. Today, let’s talk about its future and the “small bumps” that may be encountered.
1). “Small bumps” that GOB technology may encounter in the future
- Technology needs to be practiced again:
Although GOB technology is already very powerful, just like we learn things, it also needs to continue to improve. For example, packaging materials and glue-filling processes must be refined to ensure that the products are both stable and reliable.
The solution is that manufacturers must continue to invest in research and development, cooperate with “experts” such as universities and scientific research institutions, and overcome technical difficulties together.
- Costs must be reduced:
The materials and processes used in GOB technology are now quite advanced, so the cost is relatively high. This may be a “threshold” for customers with limited budgets.
To reduce costs, manufacturers can try mass production or optimize the supply chain to see if they can find more affordable materials and processes. Of course, they can also “mix and match” with other technologies to reduce overall costs.
- Have to follow the market:
The market demand is always changing, and GOB technology must change with it. For example, customers now want higher-definition and smaller-pitch displays, and GOB technology must keep up.
This requires manufacturers to do more market research, understand changes in customer needs, and then promptly develop new technologies and new products to meet the market.
2). The future “blueprint” of GOB technology
- The technology must continue to innovate:
In terms of materials, we must find better performance and lower prices. In terms of technology, we must make the steps of glue filling and curing smoother and more efficient. In terms of structure, we must think about how to make the spacing of the display smaller and the clarity higher.
- Have to “mix and match” with other technologies:
For example, with Mini/Micro LED technology, the clarity of the display can be improved, and the protection performance is also excellent. Or integrate with intelligent control technology to make the display smarter and more useful.
结论
With its unique advantages, GOB packaging technology effectively solves the “bad pixel” problem of LED display screens and significantly improves the display effect and product reliability.
With the continuous maturity of technology and the expansion of applications, GOB technology will bring more profound changes to the LED display industry and help the industry move towards a higher-quality development stage.
最后，如果你想了解更多关于LED显示屏的信息， 请与我们联系。
العربية