Characteristics of current distribution by designed electrode patterns for high power ThinGaN LED

S. H. Tu, J. C. Chen, F. S. Hwu, G. J. Sheu, F. L. Lin, S. Y. Kuo, J. Y. Chang, C. C. Lee

Research output: Contribution to journalArticlepeer-review

23 Scopus citations

Abstract

In this study, several n-type electrode patterns were designed to evaluate the current spreading effects in high power ThinGaN light emitting diodes. A proposed three dimensional numerical simulation was used to investigate the current spreading distributions. The experimental current spreading tendencies in various n-type electrodes were consistent with the simulation results. The maximum lighting output power was enhanced to 11% in our electrode pattern designs. The current-voltage and luminance-current performance of LED chips can apparently be improved with a better current spreading distribution. Therefore, this three dimensional simulation method could be used for the advanced analysis and optimization of LED performance.

Original languageEnglish
Pages (from-to)1438-1443
Number of pages6
JournalSolid-State Electronics
Volume54
Issue number11
DOIs
StatePublished - Nov 2010

Keywords

  • Current spreading
  • Laser lift-off
  • Light emitting diodes
  • ThinGaN

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