LED display technology must do eight details

Time:2018-11-29 Views:136

LED display in China has the problem of technical cost, many enterprises invest too much in technology, LED display price is too high.This LED to the expansion of LED market.How to ensure the quality of LED display technology while reducing costs?A good LED display must do eight details technically:

1. Heat dissipation performance of LED display screen

If the heat dissipation performance of LED display is poor and the temperature is too high, the stability of LED will be affected. In the long run, the accelerated performance of LED display will decline.Therefore, in this aspect, we must do a good job in PCB board heat dissipation design and heat dissipation ventilation of the box.

2. Problem of virtual welding

When the LED screen is not bright, it is most likely due to the virtual welding.Virtual welding includes many aspects, so in detail here must be done.Strict inspection must be carried out before leaving the factory.

3. The vertically inserted LED screen must be controlled.

A small deviation will directly affect the brightness uniformity of LED.This can result in inconsistent color blocks.LED must be perpendicular to PCB board.

4. Anti-static LED screen

For anti - static LED display manufacturers must do enough in this regard.All electrical protection Settings must be in place and tested regularly.

5. LED hybrid light

Leds with different brightness levels of the same color need to mix the lights. If something goes wrong with this program, the LED display will have local differences in brightness, which will directly affect the appearance of the LED display.

6. LED electric heating value

Normally, the maximum current used by leds cannot be more than 80% of the standard value of 20MA. If the LED is used in a small space, the current value must be reduced.

7. Drive circuit design

If the drive circuit is not designed well, the LED brightness around the LED display screen will be lower than that in the middle.

8. Strictly control the temperature and time of wave soldering

Preheat temperature 100 ℃ + / - 5 ℃, the highest do not exceed 120 ℃, and the requirement of preheating temperature increasing is smooth, the welding temperature is 245 ℃ + 5 ℃, welding time suggest no more than 3 seconds, after furnace vibration or shock LED of avoid by all means, until the normal temperature state.Wave soldering machine temperature parameters to be regularly tested.

Every step of LED display technology is to deal with details. The better you do in details, the higher the quality of LED display will be.At the same time, China‘s LED technology needs further innovation, and more communication with the world.I believe that in the future, China‘s LED industry will be more beautiful.