What does the LED display age mean? The aging test of the LED display refers to the imitation of whether it will be abnormal during long-term operation, which is an important guarantee for the reliability of the LED display, and is an indispensable step for the LED display to leave the factory. LED displays are able to boost performance after aging and contribute to the stability of performance in later applications. LED aging tests are a very important part of product quality control. The LED aging test is a countermeasure adopted based on the failure rate curve of the product, that is, the characteristics of the bathtub curve, to improve the reliability of the product.
LED aging methods include constant current aging and constant pressure aging. A constant current source means that the current is stable at all times. There is a question of frequency, it is not constant current. That is communication or pulsating current. The communication or pulsating current source can be characterized as a stable rms value, but this power source cannot be called a "constant current source." Constant current aging is the most suitable LED current operation feature, is the most scientific LED display aging method; over current impact clothing design school aging is also the latest aging method selected by the manufacturer, after the application of adjustable frequency, current adjustable constant current The source performs such aging in order to discriminate the expected life expectancy of the LED in a short period of time, and can pick out many dangerous LEDs that cannot be picked out by conventional aging.
The aging of the LED display is divided into white light aging (4 hours) and video aging (48 hours).
First, LED display aging test process
1, check
Check that the above cabinet modules are installed correctly.
Check if there is a short circuit in the electrical, mixing
Check if the module is installed flat and the seams are neat.
Check if the appearance is intact, if there are scratches and scratches
2, lighting up aging
Light up using the online control system
The test time is continuously lit for more than 72 hours.
3. Indicator inspection
After the aging test is correct, please check the parameter index of the quality inspection group.
1, test content: white screen, red, green, blue monochrome, gray gradient, video effects, text effects
2, led display white screen test time is not less than 24 hours
3, monochrome, grayscale gradient test no less than 24 hours
4, video, text effect test is not less than 24 hours
5, led display aging test must be someone on duty, found that the problem was reported to the engineering department manager for processing.
Dash Cam For Audi,Audi Utr Dash Cam,Audi Universal Traffic Recorder,Audi Dash Cam
SHENZHEN ROSOTO TECHNOLOGY CO., LTD. , https://www.rdtkdashcam.com