Nitride micro-display with integrated micro-lenses

H.W. Choi, E. Gu, J.M. Girkin, M.D. Dawson

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

We report progress in control of the emission from both parallel-addressed and matrix-addressed micro-array light-emitting diodes (micro-LEDs), using integrated micro-lenses. The integrated matrix-addressed device consists of a 128 × 96 element array with 470 nm emission, aligned to a 128 × 96 element sapphire micro-lens array. The lenses have a diameter of 12 µm, a centre height of 1.8 µm and a measured focal length of 8 µm. The root-mean-square (r.m.s.) roughness of the lenses, as measured by atomic force microscopy (AFM), is better than 3 nm, ensuring high optical quality. The integrated array enables the light emitted from the individual elements to be well-resolved.
Original languageEnglish
Pages (from-to)2903-2906
Number of pages3
JournalPhysica Status Solidi C
Volume2
DOIs
Publication statusPublished - 2005

Keywords

  • optics
  • photonics
  • light-emitting diodes

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