The Old Aging Test for LED Displays

The old aging test for LED displays is a crucial step to ensure their quality and performance. Through old aging testing, potential issues that may arise during long-term operation can be detected, thus enhancing the stability and reliability of the display. Below are the main contents and steps of LED display old aging testing:

1. Purpose

（1）Verify Stability:

Ensure the display can operate stably over extended periods.

（2）Identify Potential Issues:

Detect and resolve potential quality issues in the LED display, such as dead pixels, uneven brightness, and color shift.

（3）Increase Product Lifespan:

Eliminate early failure components through initial old aging, thereby improving the overall product lifespan.

2. Burn-in Test Content

（1）Constant Lighting Test:

Keep the display lit for an extended period, observing if any pixels show abnormalities such as dead or dim pixels.

（2）Cyclic Lighting Test:

Switch between different brightness levels and colors to check the display’s performance in various operating conditions.

（3）Temperature Cycle Test:

Perform old aging testing under different temperature environments to check the display’s high and low-temperature resistance.

（4）Humidity Test:

Conduct old aging testing in a high-humidity environment to check the display’s moisture resistance.

（5）Vibration Test:

Simulate transportation vibration conditions to test the display’s vibration resistance.

3. Burn-in Test Steps

（1）Initial Inspection:

Perform a preliminary check of the display before the old aging test to ensure it is working correctly.

（2）Power On:

Power on the display and set it to a constant lighting state, typically choosing white or another single color.

（3）Data Recording:

Record the start time of the old aging test, and the test environment’s temperature and humidity.

（4）Periodic Inspection:

Periodically check the display’s working status during the burn-in test, recording any abnormal phenomena.

（5）Cyclic Testing:

Perform brightness, color, and temperature cycling tests, observing the display’s performance in different states.

（6）Test Conclusion:

After the old aging test, conduct a comprehensive check of the display, record the final results, and address any identified issues.

4. Burn-in Test Duration

  The old aging test duration typically ranges from 72 to 168 hours (3 to 7 days), depending on the product’s quality requirements and customer needs.

Systematic old aging testing can improve the quality and reliability of LED displays, ensuring their stability and longevity in actual use. It is a critical step in the production process of LED displays, helping to identify and resolve early failure issues, thereby enhancing customer satisfaction.