LED display LSA40AT9001

   LED display of aging is an essential part of LED display in the production of the last step, is also a final testing part in LED display production testing, LED electronic display screen is the important guarantee of product quality.

LED aging test in product quality control is a very important link.LED products after aging can improve its efficiency, and help to late use of efficiency and stability.LED aging test is based on product failure rate curve is a response to the characteristics of bathtub curve, in order to improve the reliability of products.
LED display of aging can be divided into white light aging aging (4 hours) and video (48 hours).
LED aging methods include constant current aging and constant pressure aging.
Constant current source is refers to the current is constant at any time.Have the problem of frequency is not constant current.It is communication or pulsating current.Communication or pulsating current source can be designed to RMS constant, but the power supply cannot be called "constant current source".LED constant current aging is the most accord with current work characteristic, is the most scientific way of LED aging.Over current impact aging is also an aging method that is used by the manufacturer to the latest through the use of adjustable frequency, current adjustable constant current source for such aging, in order to judge the quality of the LED in a short time, life expectancy and can pick a lot of normal aging can't pick out the hidden trouble of LED.
The LED display aging test
1, test content: white, red, green, blue monochrome, gray gradient, video effects, text effects
2, led display white during test time not less than 24 hours
3, monochrome, gray gradient testing not less than 24 hours
4, video, and text effects test not less than 24 hours

5, led display aging test must be manned, found the problem in time report to engineering manager for processing.

This paper keywords: LED display, LCD, LCD, LED aging, industrial displays, automotive displays, thriving electronic forever
This paper is derived from the network.