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Influence of Die Attach Layer on Thermal Performance of High Power Light Emitting Diodes

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5 Author(s)
Bohan Yan ; Optoelectron. Packaging & Mater. Labs., Univ. of California, Irvine, Irvine, CA, USA ; Jiun Pyng You ; Tran, N.T. ; Yongzhi He
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In this paper, the influence of the die attach adhesive (DAA) layer on the thermal performance of high power light emitting diodes was first investigated by using finite element analysis, and some key results were verified by the experimental data. Effective thermal management of the studied light emitting diode package can be achieved by selecting a DAA material with a proper thermal conductivity and by manipulating the geometry parameters of the DAA layer, such as the DAA area, and the bond-line thickness. The significance of DAA thermal conductivity to heat dissipation was further demonstrated by an analysis of the bottleneck to heat transfer.

Published in:

Components and Packaging Technologies, IEEE Transactions on  (Volume:33 ,  Issue: 4 )

Date of Publication:

Dec. 2010

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