LED aging methods include constant current aging and constant voltage aging.

A constant current source means that the current is constant at any time. If there is a frequency problem, it is not a constant current, it is an alternating current or a pulsating current. An AC or pulsating current source can be designed to have a constant RMS value, but such a power source cannot be called a "constant current source". Constant current aging is in line with the working characteristics of LED current and is a scientific LED aging method. Overcurrent impact aging is also an aging method most commonly used by LED display manufacturers. By using a constant current source with adjustable frequency and adjustable current to perform such aging, the quality and life expectancy of the LED can be judged in a short time, and it can be Pick out many hidden LEDs that cannot be picked out by conventional aging.

Warm reminder, LED display aging test needs to pay attention to the following issues:

1. Test content: white screen, red, green, blue monochrome, grayscale gradient, video effect, text effect.

2. The test time for the LED display to be white is not less than 24 hours.

3. Monochromatic and grayscale gradient test shall not be less than 24 hours.

4. The video and text effect test shall not be less than 24 hours.

5. The aging test of the LED display must be attended by someone, and if any problems are found, they should be reported to the manager of the engineering department for processing.