Grote schermen worden nu algemeen gebruikt in verschillende industrieën, of ze nu worden gebruikt voor grote-beeldschermen in binnenconferenties, grote-beeldschermen in tentoonstellingshallen, enz., grote schermen zijn erbij betrokken, en led-beeldschermen zijn momenteel de leider op het gebied van grote-beeldschermen voor binnen- en buitenruimtes. , Vandaag zal ik de voorzorgsmaatregelen voor het ontwerpen van led-displays voor binnen met u delen.
Led-display voor binnen:
1, mixed lights
The LEDs of the same color and different brightness levels need to be mixed, or inserted according to the light insertion diagram designed according to the discrete law to ensure the consistency of the brightness of each color on the whole screen. If there is a problem in this process, the local brightness of the large screen will be inconsistent, which will directly affect the display effect of the large LED screen.
2, heat dissipation design
LED equipment will generate heat when it is working, and high temperature will affect the attenuation speed and stability of the LED, so the heat dissipation design of the PCB board and the ventilation and heat dissipation design of the cabinet will affect the performance of the LED.
3, design current value
The nominal current of the LED is 20mA. Generally, it is recommended that the maximum operating current be no more than 80 percent of the nominal value. Especially for large screens with small dot pitch, the current value should be lowered due to poor heat dissipation conditions. According to experience, due to the inconsistency of the attenuation speed of the red, green, and blue LEDs, the current value of the blue and green LEDs should be reduced in a targeted manner to maintain the consistency of the white balance after the large screen is used for a long time.
4, drive circuit design
The arrangement of the driver IC on the driver circuit board on the large screen module will also affect the brightness of the LED. Since the output current of the driver IC is transmitted too far on the PCB board, the voltage drop of the transmission path will be too large, affecting the normal operating voltage of the LED and causing its brightness to decrease. We often find that the brightness of the LEDs around the large screen module is lower than in the middle, which is the reason. Therefore, to ensure the uniformity of the brightness of the large screen, it is necessary to design the driver circuit distribution diagram.
Led-display voor binnen:
5. Control the verticality of the light
For in-line LEDs, there must be sufficient process technology to ensure that the LED is perpendicular to the PCB board when passing the furnace. Any deviation will affect the brightness consistency of the LED that has been set, and color blocks with inconsistent brightness will appear.
6, anti-static
LED large screen assembly factories should have good anti-static measures. Dedicated anti-static ground, anti-static floor, anti-static soldering iron, anti-static table mat, anti-static ring, anti-static clothing, humidity control, equipment grounding (especially the foot cutter), etc. are all basic requirements, and should be checked regularly with a static meter .
7, virtual welding control
When the LED is not bright on the large LED screen, there is often more than 50 percent probability that it is caused by various types of virtual soldering, such as LED pin soldering, IC pin soldering, pin header soldering, etc. The improvement of these problems needs to strictly improve the process and strengthen the quality inspection to solve. The vibration test before leaving the factory is also a good inspection method.
Het bovenstaande zijn verschillende belangrijke knooppunten in het interieurontwerp van led-displays voor binnen. Als u vragen of behoeften heeft over grote schermen met led-display, neem dan gerust contact op!
