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

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nitrides
lenses
matrices
sapphire
light emitting diodes
roughness
atomic force microscopy

Keywords

  • optics
  • photonics
  • light-emitting diodes

Cite this

Choi, H.W. ; Gu, E. ; Girkin, J.M. ; Dawson, M.D. / Nitride micro-display with integrated micro-lenses. In: Physica Status Solidi C. 2005 ; Vol. 2. pp. 2903-2906.
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Nitride micro-display with integrated micro-lenses. / Choi, H.W.; Gu, E.; Girkin, J.M.; Dawson, M.D.

In: Physica Status Solidi C, Vol. 2, 2005, p. 2903-2906.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Nitride micro-display with integrated micro-lenses

AU - Choi, H.W.

AU - Gu, E.

AU - Girkin, J.M.

AU - Dawson, M.D.

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AB - 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.

KW - optics

KW - photonics

KW - light-emitting diodes

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