Introduction
With the increase in usage time and changes in the external environment, Afficheurs LED may have a common problem – pixels out of control.
Pixels that are out of control not only affect the visual effect of the display but also may interfere with the accurate transmission of information. So how to prevent it? Don’t worry; this article will tell you more.
1. What is the definition of pixel out of control of LED display?
The pixel of control of the LED display is actually quite intuitive. This means that the small dots (pixels) on the display are not obedient and do not work the way you set them.
Specifically, it is one or several pixels, either not lit when they should be lit, becoming a small black dot, or not extinguished when they should be extinguished, always lit, like a stubborn little light bulb, and the color is wrong. It was originally red, but it turned blue or green, messy.
How does this happen? There may be many reasons. For example, the LED lamp bead itself may have problems, be of poor quality or age, just like people are prone to illness when they are old.
For example, the “brain” (control system) that controls these pixels fails, and the signal cannot be transmitted or is transmitted incorrectly, just like when our mobile phone signal is not good; we cannot receive calls or garbled characters.
In addition, the outside environment may also have an impact, such as being too hot, too humid, or having electromagnetic interference, just like we can’t hear others talking in a very noisy place.
What effect does the out-of-control pixel have on our viewing of the display? The impact is huge!
Think about it: if a few small black dots appear on display from time to time, or a few places are always lit, and the color is weird, it will look so awkward! Just like when you are watching a movie, a few black dots suddenly appear on the screen, or the color is wrong, then the viewing experience will definitely be greatly reduced.
So, we have to pay attention to this issue. When buying a display, you have to choose those with good quality and reliable brands; when using it, you have to be careful not to bump it; you also have to maintain it regularly, wipe off the dust, check it, and repair it in time if there is a problem. In this way, our display can serve us for a long time and clearly!
2. Analysis of the reasons for the loss of pixel control of LED display screen
The loss of pixel control of LED display screens is a relatively complex problem, and there are many possible reasons behind it. The following is a detailed analysis of the reasons for the loss of pixel control of LED display screens:
1). Hardware factors
1.1). LED lamp bead quality problems
Short life: Low-quality LED lamp beads may have a service life far lower than expected due to problems such as materials and processes and may age, decay in brightness, or even damage in advance.
Easy to damage: LED lamp beads may be damaged by mechanical shock, electrostatic discharge, and other factors during production, transportation, and installation, resulting in failures during normal use.
1.2). Driver chip failure
Insufficient driving ability: The driver chip is a key component that controls the luminosité and color of LED lamp beads. If its driving ability is insufficient, the LED lamp beads may not light up normally, or the brightness may be unstable.
Damage: The driver chip may be damaged due to overheating, overvoltage, or overcurrent, resulting in failure to work properly.
1.3). Circuit board problems
Poor welding: If the welding points on the circuit board are poorly welded, it may cause poor contact, affect signal transmission and power supply, and cause the LED lamp beads to lose control.
Aging: After long-term use, the components on the circuit board may degrade in performance or even be damaged due to aging, causing pixel loss.
1.4). Poor heat dissipation
The LED display generates heat during operation. If the heat dissipation is poor, it may cause the temperature of the LED lamp beads and driver chips to be too high, affecting their performance and life or even causing damage and pixel loss.
2). Facteurs environnementaux
2.1). High temperature, low temperature, or rapid temperature change
Under extreme temperature conditions, materials such as LED chips, epoxy resins, and brackets may produce internal stress due to different thermal expansion coefficients, causing damage to the LED lamp beads or performance degradation.
Rapid temperature changes may also cause the junction temperature inside the LED lamp beads to be too high, accelerating its aging process.
2.3). Excessive humidity and dust accumulation
Excessive humidity may cause the components on the circuit board to become damp, affecting their performance and life.
Dust accumulation may affect the heat dissipation effect, and the conductive substances in the dust may also cause faults such as short circuits.
2.4). Electrostatic discharge
Electrostatic discharge is one of the common failure causes of LED displays. During the production, installation, and use of LED display screens, both the equipment and the human body may carry static electricity. If effective anti-static measures are not taken, the PN junction of the LED lamp beads may be broken down, causing pixel loss.
3). Use and maintenance factors
3.1). Improper installation and disassembly methods
Improper installation methods may cause uneven force on the LED lamp beads or even damage them.
During the disassembly process, if the circuit board or LED lamp beads are accidentally damaged, it may also cause pixel loss.
3.2). Lack of regular maintenance and inspection
Regular maintenance can promptly detect and deal with potential problems, such as loose connection wires, aging components, etc. If regular maintenance is lacking, these problems may gradually worsen and eventually lead to pixel loss.
3.2). Overvoltage or overcurrent impact
Overvoltage or overcurrent impact may cause damage to the LED lamp beads or driver chips, causing pixel loss. This situation may be caused by power grid fluctuations, lightning strikes, or other external factors.
3. What are the effects of pixel loss on LED display screens?
Speaking of pixel loss on LED display screens, this is really a headache. It not only affects our feeling of watching the screen but also may bring a series of troubles. Next, let’s talk about the impact of pixels out of control.
1). Display effect is greatly reduced
Think about it: a clear and colorful picture suddenly has a few dim or randomly bright pixels. Can the picture still be seen? Definitely not! A pixel that is out of control is like a pimple on the face.
Although it is not big, it makes people uncomfortable. It will reduce the clarity of the image, and the color will not look so bright. It should have been a beautiful picture, but because of these “troublesome” pixels, the whole picture looks tattered, and the beauty is greatly reduced.
2). User experience is extremely poor
When we watch movies or performances or just walk on the street and look at a billboard, we all hope to see a clear and complete picture. But when the pixel is out of control, oh, the picture is like a mosaic, which makes people feel awkward no matter how they look at it.
If the display screen shows important information, such as road signs, signboards, etc., pixels out of control may also make people read the wrong information and go the wrong way, which is troublesome! So, pixel out of control really affects our viewing experience, and sometimes, it may even mislead us.
3). High economic cost
Pixels that are out of control not only affect our mood when watching the screen but may also make our wallets suffer. Why? Because pixel out of control usually needs to be repaired. If it’s just one or two pixels, it’s okay. Maybe it can be fixed.
But if there are many out-of-control pixels, or they are seriously damaged, you may have to replace the entire display or part of the module. This costs a lot of money! Moreover, if the pixel out-of-control problem can’t be solved or it keeps recurring, the display may have to be scrapped in advance.
In this way, we have to spend money to buy a new display, and our wallets will not be deflated.
4. Solutions for pixel out of control of LED display
1). Hardware upgrade and improvement
First of all, we have to work hard on the hardware. Do you know that those inferior LED lamp beads and driver chips are like “time bombs” in the display, which may give you a headache at any time?
Therefore, we have to choose high-quality LED lamp beads and driver chips, which not only have a long life but also have stable performance, which can greatly reduce the situation of pixels out of control.
Let’s talk about the circuit board, which is the “nerve center” of the display. If the circuit board design is unreasonable or the manufacturing process is poor, it will be troublesome.
Therefore, we have to optimize the design and manufacturing process of the circuit board to ensure that the circuit connection is stable and reliable so that the display can work more smoothly.
In addition, the heat dissipation problem cannot be ignored. The LED display screen will generate a lot of heat when it is working. If the heat dissipation is not good, those delicate LED lamp beads and driver chips can’t stand it.
Therefore, we have to strengthen the heat dissipation design, such as adding heat sinks and optimizing air ducts to keep the display screen “cool” so that it can work more stably.
2). Environmental adaptation and optimization
Next, we have to talk about the environment. Did you know that the LED display screen is very “delicate” and has high requirements for the working environment? Too high or too low temperature, too high or too low humidity, it may cause it to “strike.”
Therefore, we have to try to provide a suitable working environment for the display screen, such as installing it indoors and avoiding direct sunlight, so that it can work happily.
Also, don’t forget to clean the equipment regularly. Dust is the “natural enemy” of the display screen.
Too much accumulation will affect heat dissipation and may cause short circuits. Therefore, we have to “bathe” the display screen regularly to keep it clean.
In addition, static electricity is also a big problem. Static electricity discharge may cause damage to LED lamp beads, so we must take static electricity protection measures during production and maintenance, such as wearing anti-static wristbands and using anti-static tools.
3). Reasonable use and maintenance
Finally, we have to talk about the use and maintenance issues. Did you know that improper installation and disassembly methods may “injure” the display screen?
Therefore, when installing and disassembling, we must be careful and follow the specifications and not use violent or improper tools and methods.
Regular maintenance and inspection are also essential. Just like we need regular physical examinations, the display screen also needs regular inspection and maintenance.
This will help you find and fix potential problems in a timely manner, such as loose connections, aging components, etc. This will not only extend the life of the display but also keep it performing well.
In addition, we have to equip the display with a suitable power supply and overvoltage and overcurrent protection devices.
Did you know that overvoltage or overcurrent shocks are very dangerous and may damage the display? So, we have to ensure that the power supply is stable and reliable, and we have to install overvoltage and overcurrent protection devices so that the display can work more safely.
5. Preventive measures and daily maintenance
When it comes to the problem of pixel out of control of LED display screens, in fact, many times, we can avoid it through some preventive measures and daily maintenance. Now, I will give you some tips in this regard.
1). Preventive measures
First of all, we have to start with procurement. When buying an LED display screen, you can’t just look at the price but also look at the supplier’s reputation and after-sales service.
Choose suppliers with good reputations and good service so that the equipment we buy back will be more reliable, and there will be someone to take care of it if there is a problem in the future.
Let’s talk about the design stage. When designing LED display screens, designers must fully consider environmental adaptability and reliability.
For example, you have to think about where the display screen will be placed and whether environmental factors such as temperature and humidity will affect it. In addition, you have to ensure that the structure of the display screen is firm and not easy to break. In this way, we can use it with more confidence.
2). Maintenance quotidienne
After buying and installing, the next step is daily maintenance. This cannot be ignored because good daily maintenance can greatly extend the life of the LED display screen.
We have to check the operating status of the equipment regularly to see if there are any abnormalities. For example, whether the picture is clear, whether the color is normal, and whether there are bright spots or dark spots. Once a problem is found, it must be dealt with quickly, and small problems must not become big problems.
In addition, cleaning and maintenance are also essential. We have to wipe the dust off the display screen regularly and clear the dust inside. In this way, the display screen can be kept clean and tidy and work more smoothly.
Finally, I have to remind everyone that important data and configuration files must be backed up. In case there is a problem with the display screen one day, we can still rely on these backup data to restore it. Otherwise, if the data is lost, it will be troublesome.
Conclusion
Through a comprehensive analysis of the problem of pixel out of control on LED displays, we have a deep understanding of the complexity and diversity of this problem. Whether it is hardware factors, environmental factors, or usage and maintenance factors, they may all be the culprits for pixels out of control.
Therefore, we must take a comprehensive solution from multiple angles to effectively prevent and deal with the problem of pixels out of control.
Enfin, si vous souhaitez en savoir plus sur les écrans LED, veuillez nous contacter.
