Development of a Real-time Monitoring System with Uni-photodetector for LED Long Term Reliability Tests
In this paper,a fully automated,low-cost,real-time illuminance measurement system for LED long term reliability tests is proposed.The system has only one photodetector to measure the illuminance of all samples inside the test chamber during the reliability test.With a proprietary algorithm,a single photodetector can measure the illuminance of all samples in the chamber by sequential scanning.This system monitors and records the illuminance of each individual sample inside the test chamber.This provides continuous and reliable data for analysis and prediction of LED lifespan.It does not require suspending the reliability test for sample inspection and can automatically analyze the time-to-failure of samples.The proposed system can significantly reduce the time required for data acquisition and measurement errors.This paper also compares the results obtained from the proposed system and the conventional periodic inspection to highlight the merits of the new system.
LED reliability illuminance
Grace G.ZHANG Sophie L.Y.LU Nick G.M.YANG Sam H.Y.ZOU Steven D.L.ZHONG Jeffery C.C.LO S.W.Ricky LEE
HKUST LED-FPD Technology R&D Center at Foshan Center for Advanced Microsystems Packaging HKUST LED-FPD Technology R&D Center at Foshan;Center for Advanced Microsystems Packaging;Department
国际会议
The 15th International Conference on Electronic Packaging Technology (ICEPT 2014) ) (第十五届电子封装技术国际会议)
成都
英文
1477-1481
2014-08-12（万方平台首次上网日期，不代表论文的发表时间）