A statistical study to identify the effects of packaging structures on lumen reliability of LEDs. (April 2017)

• Record Type: Journal Article
• Authors: Chen, Qi; Hu, Run; Luo, Xiaobing
• Is Part Of: Microelectronics and reliability. Volume 71(2017)
• Page Start: 51
• Page End: 55
• Publication Date: 2017-04
• Subjects: Light-emitting diode (LED) -- Reliability -- Orthogonal experimental design -- Analysis of variance; Electronic apparatus and appliances -- Reliability -- Periodicals; Miniature electronic equipment -- Periodicals; Appareils électroniques -- Fiabilité -- Périodiques; Équipement électronique miniaturisé -- Périodiques; Electronic apparatus and appliances -- Reliability; Miniature electronic equipment; Periodicals; 621.3815
• DOI: 10.1016/j.microrel.2017.02.011
• Languages: English
• ISSNs: 0026-2714

Abstract

Abstract: The development of high-power light-emitting diode (LED) devices has been bedeviled by the reliability problems. And most reliability issues are caused by the packaging materials rather than the chips. However, which packaging material is the most influential remains unrevealed. To answer this question, a statistical method was introduced in this paper. Optical simulations were conducted to calculate the optical output power of LED package according to the orthogonal experimental design. Range and variance analyses were carried out to determine the significance of the relevant factors on the LED's light output. The results showed that the dome lens among the non-luminescent packaging materials had the most significance in affecting the light output. It is concluded that this method is useful in detecting the most significant part of LED packaging materials during the development of new packaging structures and is beneficial for enhancing the whole reliability of LED package effectively. Highlights: A statistical method to detect the key packaging component that determines LED's reliability is proposed. Decoupled analysis is conducted to study the effect of individual component on LED's light output. Optical simulations are carried out to combine components of various properties in one LED package.