Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Heat dissipation performance of a high-brightness LED package assembly using high-thermal conductivity filler

Not Accessible

Your library or personal account may give you access

Abstract

This paper presents a thermal analysis and experimental validation of natural convective heat transfer of a high-brightness light-emitting diode (LED) package assembly. The substrate materials used in the LED package assembly were filled and doped using boron nitride (BN) filler. The thermal conductivity of the BN-filled substrate was measured. The temperature distribution and heat flow of the LED package were assessed by thermal profile measurement using an infrared (IR) camera and thermocouples. In addition, the heat transfer process of the LED package assembly in natural convection was also simulated using the computational fluid dynamics method. The optical performance of the LED package was monitored and investigated with various filler contents. The heat conduction mechanism in the substrate was analyzed. IR thermogram showed that the BN-doped substrate could effectively lower the surface temperature of the LED package by 21.5°C compared with the traditional FR4 substrate. According to the IESNA LM 80 lifetime testing method, reduction in LED temperature can prolong the LED’s lifetime by 19,000 h. The optical performance of the LED package assembly was also found to be improved significantly in lighting power by 10%. As a result, the overall heat dissipation capability of the LED package to the surrounding is enhanced, which improves the LED’s efficacy.

© 2013 Optical Society of America

Full Article  |  PDF Article
More Like This
Study on the staggered array of an LED system for improved thermal behavior

Huan-Ting Chen, Xiao-Fang Zhou, Yi Zhang, Shuo Lin, Jing-Rong Zhou, and Yu Fei
Appl. Opt. 54(22) 6752-6757 (2015)

Cup-shaped copper heat spreader in multi-chip high-power LEDs application

Ray Hua Horng, Hung Lieh Hu, Re Ching Lin, Li Shen Tang, Chen Peng Hsu, and Sin Liang Ou
Opt. Express 20(S5) A597-A605 (2012)

The impact of the non-linearity of the radiant flux on the thermal load of the color conversion elements in phosphor converted LEDs under different current driving schemes

Franz P. Wenzl, Christian Sommer, Paul Hartmann, Peter Pachler, Hans Hoschopf, Gregor Langer, Paul Fulmek, and Johann Nicolics
Opt. Express 21(S3) A439-A449 (2013)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (8)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Tables (1)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (2)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved