Thermal and mechanical analysis of high-power light-emitting diodes with ceramic packages

Jianzheng Hu, Lianqiao Yang, Moo Whan Shin

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)

Abstract

In this paper we present the thermal and mechanical analysis of high-power light-emitting diodes (LEDs) with ceramic packages. Transient thermal measurements and thermo-mechanical simulation were performed to study the thermal and mechanical characteristics of ceramic packages. Thermal resistance from the junction to the ambient was decreased from 76.1°CAV to 45.3°CAV by replacing plastic mould to ceramic mould for LED packages. Higher level of thermo-mechanical stresses in the chip were found for LEDs with ceramic packages despite of less mismatching coefficients of thermal expansion comparing with plastic packages. The results suggest that the thermal performance of LEDs can be improved by using ceramic packages, but the mounting process of the high power LEDs with ceramic packages is critically important and should be in charge of delaminating interface layers in the packages.

Original languageEnglish
Title of host publicationCollection of Papers Presented at The 13th International Workshop on THERMal INvestigation of Ics and Systems, THERMINIC 2007
Pages77-81
Number of pages5
DOIs
Publication statusPublished - 2007 Dec 1
Event13th International Workshop on THERMal INvestigation of ICs and Systems, THERMINIC 2007 - Budapest, Hungary
Duration: 2007 Sep 172007 Sep 19

Other

Other13th International Workshop on THERMal INvestigation of ICs and Systems, THERMINIC 2007
CountryHungary
CityBudapest
Period07/9/1707/9/19

Fingerprint

Light emitting diodes
Plastic molds
Mountings
Heat resistance
Thermal expansion
Hot Temperature
Plastics

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering
  • Control and Systems Engineering

Cite this

Hu, J., Yang, L., & Shin, M. W. (2007). Thermal and mechanical analysis of high-power light-emitting diodes with ceramic packages. In Collection of Papers Presented at The 13th International Workshop on THERMal INvestigation of Ics and Systems, THERMINIC 2007 (pp. 77-81). [4451751] https://doi.org/10.1109/THERMINIC.2007.4451751
Hu, Jianzheng ; Yang, Lianqiao ; Shin, Moo Whan. / Thermal and mechanical analysis of high-power light-emitting diodes with ceramic packages. Collection of Papers Presented at The 13th International Workshop on THERMal INvestigation of Ics and Systems, THERMINIC 2007. 2007. pp. 77-81
@inproceedings{a32201787cf94afc9ae4e57aa3d7356e,
title = "Thermal and mechanical analysis of high-power light-emitting diodes with ceramic packages",
abstract = "In this paper we present the thermal and mechanical analysis of high-power light-emitting diodes (LEDs) with ceramic packages. Transient thermal measurements and thermo-mechanical simulation were performed to study the thermal and mechanical characteristics of ceramic packages. Thermal resistance from the junction to the ambient was decreased from 76.1°CAV to 45.3°CAV by replacing plastic mould to ceramic mould for LED packages. Higher level of thermo-mechanical stresses in the chip were found for LEDs with ceramic packages despite of less mismatching coefficients of thermal expansion comparing with plastic packages. The results suggest that the thermal performance of LEDs can be improved by using ceramic packages, but the mounting process of the high power LEDs with ceramic packages is critically important and should be in charge of delaminating interface layers in the packages.",
author = "Jianzheng Hu and Lianqiao Yang and Shin, {Moo Whan}",
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Hu, J, Yang, L & Shin, MW 2007, Thermal and mechanical analysis of high-power light-emitting diodes with ceramic packages. in Collection of Papers Presented at The 13th International Workshop on THERMal INvestigation of Ics and Systems, THERMINIC 2007., 4451751, pp. 77-81, 13th International Workshop on THERMal INvestigation of ICs and Systems, THERMINIC 2007, Budapest, Hungary, 07/9/17. https://doi.org/10.1109/THERMINIC.2007.4451751

Thermal and mechanical analysis of high-power light-emitting diodes with ceramic packages. / Hu, Jianzheng; Yang, Lianqiao; Shin, Moo Whan.

Collection of Papers Presented at The 13th International Workshop on THERMal INvestigation of Ics and Systems, THERMINIC 2007. 2007. p. 77-81 4451751.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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N2 - In this paper we present the thermal and mechanical analysis of high-power light-emitting diodes (LEDs) with ceramic packages. Transient thermal measurements and thermo-mechanical simulation were performed to study the thermal and mechanical characteristics of ceramic packages. Thermal resistance from the junction to the ambient was decreased from 76.1°CAV to 45.3°CAV by replacing plastic mould to ceramic mould for LED packages. Higher level of thermo-mechanical stresses in the chip were found for LEDs with ceramic packages despite of less mismatching coefficients of thermal expansion comparing with plastic packages. The results suggest that the thermal performance of LEDs can be improved by using ceramic packages, but the mounting process of the high power LEDs with ceramic packages is critically important and should be in charge of delaminating interface layers in the packages.

AB - In this paper we present the thermal and mechanical analysis of high-power light-emitting diodes (LEDs) with ceramic packages. Transient thermal measurements and thermo-mechanical simulation were performed to study the thermal and mechanical characteristics of ceramic packages. Thermal resistance from the junction to the ambient was decreased from 76.1°CAV to 45.3°CAV by replacing plastic mould to ceramic mould for LED packages. Higher level of thermo-mechanical stresses in the chip were found for LEDs with ceramic packages despite of less mismatching coefficients of thermal expansion comparing with plastic packages. The results suggest that the thermal performance of LEDs can be improved by using ceramic packages, but the mounting process of the high power LEDs with ceramic packages is critically important and should be in charge of delaminating interface layers in the packages.

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Hu J, Yang L, Shin MW. Thermal and mechanical analysis of high-power light-emitting diodes with ceramic packages. In Collection of Papers Presented at The 13th International Workshop on THERMal INvestigation of Ics and Systems, THERMINIC 2007. 2007. p. 77-81. 4451751 https://doi.org/10.1109/THERMINIC.2007.4451751