介绍
使用过程中 LED屏幕, there is a problem that cannot be ignored. Do you know? That is, the “dead light rate” of LED display screens exceeds the standard.
The dead light rate is the proportion of unlit lamp beads in the LED display screen to the total number of lamp beads, which is one of the important indicators to measure the quality of the display screen.
So, if the “dead light rate” of LED screens exceeds the standard, what hidden dangers will it bring?
1. What are the effects of the dead light rate exceeding the standard on economic benefits?
1). Increased maintenance costs:
First of all, the maintenance costs are rising in a straight line, which makes users of LED display screens feel uncomfortable. The lamp beads are always broken, and people have to be constantly found to repair and replace new lamp beads.
This is not only the labour cost to be paid to technicians but also the various tools and equipment used for maintenance, as well as the high-quality but expensive lamp bead replacement parts, all of which cost money.
Moreover, this maintenance is not a one-time or two-time thing. Over time, the maintenance fee becomes a considerable expense, and the company’s profits are eaten away bit by bit.
2). Decreased operating efficiency:
Let’s talk about operating efficiency. Many users’ LED display screens are “signboards” used for advertising and displaying information. But when there are too many dead lights, the picture becomes mottled, with black spots, bright spots, and distorted colours, which makes customers frown.
In this way, the advertising effect is greatly reduced, and the originally attractive advertisements become boring. Customers may not be willing to cooperate with us, and business will naturally become difficult.
For those who rely on display screens for information display, dead lights will make the information transmission inaccurate and unclear, causing confusion to the audience and affecting the company’s image and reputation.
3). Damage to brand image:
LED display screens are the facade of the brand. When people see that the display screen is broken, they will definitely think that your brand is unprofessional and unreliable.
Once this reputation is damaged, it will be difficult to recover it in the future. In today’s highly competitive market environment, brand image is the “lifeline” of the company and must be well protected.
Once the brand image is damaged, customers may lose trust in the company and choose other, more reliable and professional partners, which is undoubtedly a huge blow to the long-term development of the company.
So, you can’t underestimate the problem of excessive dead light rate. We need to find a solution quickly, such as strengthening product quality control, improving maintenance efficiency, and regular maintenance. Otherwise, economic losses, customer loss, and damaged brand image will really outweigh the gains.
2. The impact of excessive dead light rate on visual effects
Exceeding the standard dead light rate is undoubtedly a “disaster” for the visual effects of LED display screens. The problem it brings is not just a small flaw on the screen but directly affects the viewer’s experience.
First of all, the decline in picture quality is the most intuitive feeling. Exceeding the standard dead light rate means that black spots, bright spots or dark areas will appear on the display screen.
These “defects” are like patches that destroy the uniformity and clarity of the picture. The picture that should have been smooth and coherent becomes intermittent because of the existence of these dead lights, which makes people feel uncomfortable.
Think about it, you originally want to play a very cool advertising picture, but there are always a few places that are not displayed or black when playing. It really affects the viewing of the overall picture.
Secondly, colour distortion is also a big problem. The dead light area forms a sharp color contrast with other normally luminous lamp beads, just like a few pieces of uncoordinated colors suddenly appear on a painting, the color balance of the overall picture is broken, and the viewing experience is greatly reduced.
For users who pursue true and delicate colours, this is undoubtedly unacceptable.
It’s like an advertisement background that was originally dark blue, but when it is played, it shows several different blues, which makes the background very messy and takes away the appeal of the product itself.
Finally, the reduction in contrast is also a serious consequence of the excessive dead light rate. Contrast is an important indicator to measure the degree of clarity of the picture level.
The existence of the dead light area is like a layer of “fog” that shrouds the picture, making the image level unclear and the information transmission blurred. This is undoubtedly a big obstacle for occasions where accurate information needs to be conveyed.
3. Damage to user experience caused by excessive dead light rate
Excessive dead light rate not only affects the visual effect of LED display screens but also causes considerable damage to user experience.
First of all, users are prone to visual fatigue after watching LED display screens with excessive dead light rate for a long time. Eyes are the windows of the soul and the most vulnerable organs.
The existence of dead lights makes the picture flicker and unstable. Watching such pictures for a long time will make your eyes feel dry and tired, and may even cause eye diseases.
Just like you often feel dizzy or vomit when you see the flickering and unstable pictures.
Secondly, the decline in user satisfaction is also inevitable. The phenomenon of dead lights has seriously affected the overall evaluation of users on LED display screens. Users pay for enjoyment and visual feasts, not black spots, bright spots or dark areas. How can such products satisfy users?
Finally, for companies that rely on LED display screens for product display, information release and other activities, the excessive dead light rate may lead to a decrease in customer trust in their products or services.
Trust is the cornerstone of business cooperation. Once trust is destroyed, it is difficult to establish it again.
Customers may doubt the professional ability and product quality of the company because of the phenomenon of dead lights and choose other, more reliable and professional partners. This is undoubtedly a huge loss for the company.
4. Definition and standard of excessive dead light rate
The dead light rate, in layman’s terms, is the ratio of the “bad pixels” that are not lit on the LED display to the total number of lamp beads on the entire screen. Imagine a large LED screen with densely packed small lamp beads.
If several or more of them are not lit, then the ratio of them to the total number is what we call the dead light rate.
In fact, there is no fixed number in the industry standard for the dead light rate of LED display screens, but there is a rough range. Generally speaking, it is common for the dead light rate of LED display screens to be controlled at about 1 to 2 in 100,000. In other words, one or two out of a million lamp beads are allowed.
However, if it is a particularly high-precision product, such as a small-pitch LED transparent screen, the requirements are more stringent. Because this type of product has particularly high requirements for picture quality, a dead light rate of 3 in 10,000 may not meet daily use needs, and it must be lower.
Because the LED display screen of the small pitch series is used for close viewing, unlike the advertising LED display screen, which is viewed from a distance, users can easily see the dead lamp beads. Therefore, the dead lamp rate is very strict.
5. The threat of excessive dead lamp rate to safety
Exceeding the dead lamp rate is not just as simple as affecting the viewing effect; it may also bring some real safety hazards.
1). Risk of local overheating:
Imagine that if there is a large area of the LED screen where the lamp beads are not lit, then this area is much hotter than other places? Because normal lamp beads will heat up when working, and then the heat dissipation system will dissipate the heat.
However, the dead lamp area cannot dissipate heat, the heat will accumulate more and more, and the temperature will get higher and higher. In this way, it may cause safety hazards such as fire, which is very dangerous.
2). Short circuit risk:
The dead lamp area may also form a short circuit with other normal lamp beads. Because although the lamp beads are not lit, its circuit may still be connected. The current may not take the normal route, but flow through other channels.
In this way, it is possible to burn out the circuit, or even the entire device. This will not only affect the use, but also cause economic losses.
3). Risk of electric shock:
If the LED screen is not grounded or the grounding is poor, a leakage current may be generated at the dead light. Leakage current means that the current does not follow the normal route but runs to other places.
If the leakage current is too large, people may get an electric shock if they touch it accidentally. Electric shock is very dangerous. The mild case may just feel numbness, but the severe case may endanger life. Therefore, when using the LED screen, make sure that the grounding is connected well to ensure safety.
6. Analysis of the reasons for the excessive dead light rate
1). Chip quality problem:
The chip is like the “heart” of the LED lamp bead. If there is a problem with the “heart”, the lamp bead will definitely not light up. Some chips have excessive leakage current due to poor manufacturing processes or material problems, which is like the “leakage” of the heart.
As a result, the lamp bead “strikes” and becomes a dead light. Therefore, the quality of the chip is directly related to the life and reliability of the LED lamp bead.
2). Poor packaging process:
Packaging is like putting on a “protective coat” for LED lamp beads. But if these “clothes” are not made well, the lamp beads will also suffer. For example, during the packaging process, if the lamp beads are “shocked” by static electricity, just like people being electrocuted, they may also be damaged.
In addition, poor glue quality is like the poor fabric of clothes, which is easy to be damaged; poor welding skills are like loose stitching of clothes, which is easy to fall apart. These may cause the lamp beads to fail and become dead lamps.
3). Harsh use environment:
LED display screens often face various harsh environments, such as high temperatures, high humidity, and corrosive substances such as acids, alkalis, and salts. These environments are like “catalysts” that accelerate the ageing of lamp beads. High temperature will cause the material inside the lamp beads to expand and deform.
High humidity will cause the lamp beads to absorb moisture, resulting in internal short circuits; corrosive substances such as acids, alkalis, and salts will corrode the surface and internal structure of the lamp beads. These will make the lamp beads “retire” earlier, and the dead lamp rate will go up.
4). Improper installation and maintenance:
When installing the LED display, if you are too rough, such as using too much force, squeezing and deforming, just like treating a fragile object carelessly, the lamp beads may be injured. In addition, if it is not fixed firmly, it is like putting something in a shaky place, which may fall at any time.
In addition, if it is not maintained for a long time, dust will accumulate, and heat dissipation will not be good, just like people who do not take a shower or change clothes for a long time will feel uncomfortable, and the lamp beads will also be “tired to death” and become dead lights.
7. Preventive measures and solutions
1). Choose high-quality products:
When buying LED display screens, choose those with good reputation and famous brands. Because high-quality products usually use high-quality chips and packaging materials, and the manufacturing process is more exquisite, the quality is guaranteed.
Moreover, high-quality products usually have a longer warranty period and better after-sales service, which is more reassuring to use. In this way, the dead light rate is naturally reduced.
2). Standard installation and use:
When installing, follow the instructions step by step; do not use too much force, and do not squeeze the display screen. When using, adjust the brightness and contrast appropriately, and do not let the display screen “work overtime” for a long time.
Just like people, they also need rest and adjustment. In this way, the lamp beads can be used longer, and the dead lamp rate will be reduced.
3). Strengthen electrostatic protection:
During production, storage and assembly, electrostatic protection should be done well. For example, operators should wear anti-static wristbands and gloves, just like electricians wear insulating gloves.
Equipment should be grounded, just like plugging electrical plugs into grounded sockets. In this way, static electricity will not damage the LED chip, and the dead lamp rate will be reduced.
4). Regular inspection and maintenance:
LED display screens should be inspected and maintained regularly, just like regular physical examinations for people. Dead lamps should be handled in time, such as cleaning dust and checking whether the connection lines are loose or broken.
In addition, the heat dissipation of the display screen should be checked to ensure good heat dissipation. In this way, the display screen can always be kept in good condition and the dead lamp rate will be reduced.
结论
In summary, in fact, the dead lamp rate of LED display screens exceeding the standard will bring a lot of safety hazards, not only affecting the reputation of the product but also affecting the economy.
Therefore, it is very important for us to prevent and control the dead lamp rate of LED display screens.
So, have you learned how to prevent the LED display screen from dying? Remember it.
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。
