With the full spread of LED display in the market, many consumers often ignore the daily maintenance of LED display. Such a long time use not only affects the user’s visual experience, but also greatly reduces the life of the display. So, how to ensure the quality of LED display? Also rely on LED display daily maintenance and maintenance to maintain~

How to ensure the quality of LED display and extend its service life?

1、 How to ensure the quality of LED display

Good anti-static measures shall be taken for LED display screen assembly in the factory. Special anti-static ground, anti-static floor, anti-static soldering iron, anti-static pad, anti-static ring, anti-static clothing, humidity control, equipment grounding (especially foot cutting machine) are the basic requirements, and they should be tested regularly with an electrostatic meter.

1. There should be good anti-static measures in the assembly plant of anti-static LED display electronic screen. Special anti-static ground, anti-static floor, anti-static soldering iron, anti-static pad, anti-static ring, anti-static clothing, humidity control, equipment grounding (especially foot cutting machine) are the basic requirements, and they should be tested regularly with an electrostatic meter.

2. Driving circuit design the driving circuit board of LED display module. The layout of driving IC will also affect the brightness of LED. Due to the long transmission distance of driving IC output current on PCB, the voltage drop of transmission path will be too large, which will affect the normal working voltage of LED and reduce its brightness. We often find that the LED brightness around the LED display module is lower than that in the middle, which is the reason. Therefore, in order to ensure the consistency of the brightness of the display screen, it is necessary to design the distribution diagram of the driving circuit.

3. The nominal current of LED is 20mA. It is generally recommended that the maximum current should not exceed 80% of the nominal value. Especially for the display screen with small spacing, the current value should be reduced due to poor heat dissipation conditions. According to the experience, due to the inconsistency of attenuation speed of red, green and blue LEDs, the current value of blue and green LEDs should be reduced to maintain the consistency of white balance after long-term use.

4. Mixed light LED with the same color and different brightness level needs mixed light, or according to the discrete law of the design of the plug-in diagram, to ensure the consistency of the brightness of each color of the whole screen. If there is a problem in this process, the local brightness of the display will be inconsistent, which will directly affect the display effect of the LED display.

5. Control the perpendicularity of the lamp. For the plug-in led, there should be enough technology to ensure that the LED is perpendicular to the PCB. Any deviation will affect the LED brightness consistency that has been set, and the color block with inconsistent brightness will appear.

6. The temperature and time of wave front welding should be strictly controlled. It is suggested that the preheating temperature should be 100 ℃± 5 ℃, the maximum temperature should not exceed 120 ℃, and the preheating temperature should rise steadily. The welding temperature should be 245 ℃± 5 ℃, and the welding time should not exceed 3 seconds. After passing the furnace, vibration or shock should be avoided until normal temperature is restored. The temperature parameters of wave soldering machine should be detected regularly, which is determined by the characteristics of LED. Overheating or fluctuating temperature will directly damage led or cause hidden trouble of LED quality, especially for small size such as 3mm Round and Oval LED.

7. When the LED is not on, there is often more than 50% probability that it is caused by various types of false soldering, such as LED pin false soldering, IC pin false soldering, pin and bus false soldering, etc. These problems need to be solved by strictly improving the process and strengthening the quality inspection. The vibration test before delivery is also a good inspection method.

8. Heat dissipation design: LED will generate heat when it works, and too high temperature will affect the attenuation speed and stability of LED, so the heat dissipation design of PCB board and ventilation and heat dissipation design of box will affect the performance of LED.

2、 LED display daily maintenance and maintenance methods

01。 Broken screen problem

To avoid possible problems, we can choose passive protection and active protection. Passive protection means that users in some Internet cafes, dormitories and other public places can choose to buy Monitors with tempered glass, so that your display screen can be “invulnerable”, but it will have an impact on the color of the display, and there will be reflective phenomenon. Active protection is in the In normal use, we should be more careful, try to keep the objects that may cause damage to the screen away from the screen, and wipe the screen gently when cleaning, so as to minimize the possibility of damage.

02。 Keep the humidity of the environment

All users who have ever spilled drinks on the keyboard and caused keyboard damage know this common sense. Don’t let anything with moisture properties enter your LED display. If fog is found, wipe it gently with a soft cloth, and then turn on the power. If moisture has entered the display, the display must be placed in a warm and dry place to allow the moisture and organic compounds to evaporate. When the LCD with humidity is electrified, the electrode of the LCD will be corroded, which will cause permanent damage.

03。 Routine maintenance

LCD has the closest relationship with our users, so it is necessary to do a good job in cleaning. In fact, LCD is also easy to show dirty, white appearance is really good-looking, but if you don’t pay attention to maintenance, it will soon turn yellowish; piano baking paint is really good performance, but after a week’s use, the shell must be covered with fingerprints; even if it is ordinary black frosted material, for a period of time, the screen must be a piece of dust. Many users know to clean the LED display regularly, but do you know how to clean the LCD correctly?

*Precautions

For most LED backlight displays, the most vulnerable part is the screen. Generally, the screen hardness is less than 3H (pencil lead hardness). If you don’t pay attention to it in normal use, it is easy to be “accidentally injured” by other devices, and once the screen is damaged, it means that the LED display is basically scrapped.

Well, the above is how to ensure the quality of LED display and LED display daily maintenance content introduction, hope to help you ~ more information, more content, do in Qianjia network, welcome to pay attention to or click to check!

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