Increased organic light-emitting diode panel light efficiency by optimizing structure and improving alignment of pyramidal array light-enhancing layers

Ming Lung Chen, An Chi Wei, Han Ping D. Shieh

Research output: Contribution to journalArticlepeer-review

28 Scopus citations

Abstract

A pyramidal array light-enhancing layer (pyramidal ALEL) on an organic light-emitting diode (OLED) panel has been optimized to enhance the luminance efficiency with a gain factor of 2.03 experimentally. The issues resulting from the misalignment of the ALEL and OLED pixels were investigated with respect to the effects of the pixel spacing and Moiré pattern. The pixel spacing effect has been shown to be the main cause of gain loss during alignment, whereas the Moiré pattern effect has been shown to be suppressed under the conditions of an appropriate rotational alignment and identical sizes for the ALEL and PLED pixels.

Original languageEnglish
Pages (from-to)1521-1525
Number of pages5
JournalJapanese Journal of Applied Physics
Volume46
Issue number4 A
DOIs
StatePublished - 5 Apr 2007

Keywords

  • Alignment
  • Array light-enhancing layer
  • Light efficiency
  • Moiré pattern
  • Organic light-emitting diode (OLED)

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