Thermal modeling and performance of LED packaging for illuminating device

Farn Shiun Hwu, Gwo Jiun Sheu, Jyh Chen Chen

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

9 Scopus citations

Abstract

A three-dimensional thermal model of LED illuminating device is established by using the finite element method. The natural convective boundaries are applied on the lateral surfaces, and an equivalent convective boundary on the bottom surface is utilized to represent the real effects of heat sinks or fins on LEDs. In this paper, the dielectric layer of LED die bonding is discussed and the influences of external and internal thermal resistances are analyzed. When we enhance the external convective effect, the external thermal resistance is reduced obviously. The thermal conductivity of material and the thickness of dielectric layer are important factors on the internal thermal resistance. We may propose these results to design and develop the global principle for the heat-dissipating package of LED device to increase the performance of LED.

Original languageEnglish
Title of host publicationSixth International Conference on Solid State Lighting
DOIs
StatePublished - 2006
EventSixth International Conference on Solid State Lighting - San Diego, CA, United States
Duration: 14 Aug 200617 Aug 2006

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume6337
ISSN (Print)0277-786X

Conference

ConferenceSixth International Conference on Solid State Lighting
Country/TerritoryUnited States
CitySan Diego, CA
Period14/08/0617/08/06

Keywords

  • Dielectric layer
  • LED
  • Packaging
  • Thermal management

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