8 Factors Affecting The Normal Operation Of LED Display Screen
Are you using LED display to create more profit for your business activities? Are you planning to buy LED displays to promote your products and services? Are you considering using an LED display to create your own home theater? Today, we will share 8 factors that affect the service life of the LED display so that you can use the LED display better.
1. Heat dissipation design of LED display
The LED display screen relies on the lamp beads to emit the corresponding light source to work normally. These thousands of lamp beads will emit light when they work at the same time. At the same time, because the efficiency of converting electrical energy into light is less than 100%, some of the power is converted in the form of heat energy. If the LED display is not designed for heat dissipation during installation, the temperature of the LED display will rise rapidly after a long period of use or when the LED display is in a poorly ventilated environment, which will affect the LED display. The overall operational stability of the display.
2. LED display mixed light treatment
LED displays of the same color with different brightness levels need to be mixed or inserted according to the lamp insertion diagram designed according to the discrete law. This operation can ensure that the brightness of each color of the entire display screen can remain consistent. If there is a problem in the process of this link, it will lead to inconsistent local brightness of the LED display, which will directly affect the display effect of the LED display.
3. Design current value
Under normal circumstances, the standard current value of the LED display is 20mA. Generally, we recommend that the maximum use current should not exceed 80% of the standard current, that is, not more than 16mA. Especially when using a small-pitch LED display, because the heat dissipation conditions are not as good as that of an ordinary-pitch LED display, we usually reduce the current value of the small-pitch LED display.
In addition, due to the inconsistency of the decay speed of LED display lamp beads when using red, green, and blue, we will also reduce the current value of blue and green in a targeted manner to maintain the LED display for a long time. Consistency and stability of post-white balance.
4. Drive circuit design
The arrangement of the driver IC on the driver circuit board on the LED display module will also affect the display brightness of the LED display. Since the transmission distance of the output current of the driver IC on the PCB circuit board is too long, the voltage drop in the transmission path will be too large, which will affect the normal operating voltage of the LED display and reduce its brightness.
We often have such an experience that the display brightness of the screen around or at the edge of the LED display is slightly lower than the middle position of the LED display. The root cause of this problem is the design of the driving current. When you need to purchase LED display but do not know much about the professional knowledge in this area, you can contact our senior technical engineers, we can provide free consulting services
5. Installation of LED display screen lamp beads
For the in-line LED display, the installation process of the lamp beads is more important. In theory, we need to install the in-line lamp beads of the LED display vertically on the PCB circuit board, so as to ensure that the display content and display brightness of the LED display will not deviate. However, with the continuous advancement of LED display technology, the in-line LED display is gradually withdrawing from the LED display market. Now the new LED display adopts completely different lamp beads, so there is no need to worry about the in-line lamp beads. installation process problem.
6. Welding control
The fundamental reason why most of the LED displays can’t glow normally is because of various types of soldering problems. Including but not limited to LED pin soldering, IC pin soldering, pin header soldering, etc. The problem of virtual welding is not only a problem that causes the LED display to not light up normally. The virtual welding will cause the contact resistance to cause local heating, and the local heating will further deepen the virtual welding until the solder joints completely fall off. In severe cases, it will also cause a short circuit in the LED display circuit, and even cause a fire due to excessive local temperature.
7. Wave Soldering Temperature and Time
In the production of LED display, the temperature and time of wave soldering must be strictly controlled. Usually, we set the preheating temperature to be 100°C ± 5°C, the maximum temperature does not exceed 120°C, and the preheating temperature rise speed is required to be stable. The soldering temperature is 245℃±5℃. The welding time should not exceed 3 seconds. After the furnace, do not vibrate or hit the LED display until it returns to normal temperature. The temperature parameters of wave soldering should be checked regularly. Overheating or fluctuating temperature will directly lead to damage or scrapping of the LED display.
8. Prevent static electricity
LED displays need good anti-static measures when they are factory assembled. The assembly environment should have anti-static ground, anti-static soldering iron, anti-static table mat, anti-static ring, anti-static clothing, temperature and humidity controller, etc. Static electricity is also generated when using the LED display. It is recommended that the time interval between turning on and off the LED display exceeds 5 minutes.
That’s all for 8 Factors Affecting The Normal Operation Of LED Display Screen. If you are interested in other technical knowledge of LED display or you have the need to purchase LED display or you need LED display to realize a specific project. Welcome to contact our technical engineers, we will provide you with the entire process from design to product delivery and even project realization.
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