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Proceedings Paper

Light extraction and customized optical distribution from plastic micro-optics integrated OLEDs
Author(s): P. Melpignano; G. Rotaris; V. Biondo; S. Sinesi; S. Westenhöfer; M. T. Gale; M. Murgia; S. Caria; R. Zamboni
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Paper Abstract

An OLED device suitable for automobile ceiling lights has been designed, fabricated and evaluated. The OLED structure is fabricated on a thin (120 µm), flexible polymer foil with integrated micro-optics to achieve customized beam shaping in the far field. A pixelated OLED structure matched to a patch-pad microlens matrix was used to convert the OLED Lambertian emission into a Gaussian-shaped illumination beam. Both refractive and diffractive microlenses were investigated. The integrated micro-optics OLED architecture reduces light losses due to waveguiding effects and effectively increases the light extraction by up to 70%.

Paper Details

Date Published: 20 April 2006
PDF: 13 pages
Proc. SPIE 6192, Organic Optoelectronics and Photonics II, 61920V (20 April 2006); doi: 10.1117/12.665515
Show Author Affiliations
P. Melpignano, Centro Ricerche Plast-Optica S.p.A (Italy)
G. Rotaris, Centro Ricerche Plast-Optica S.p.A (Italy)
V. Biondo, Centro Ricerche Plast-Optica S.p.A (Italy)
S. Sinesi, Centro Ricerche Plast-Optica S.p.A (Italy)
S. Westenhöfer, Ctr. Suisse d'Electronique et de Microtechnique SA (Switzerland)
M. T. Gale, Ctr. Suisse d'Electronique et de Microtechnique SA (Switzerland)
M. Murgia, CNR, Istituto per lo Studio dei Materiali Nanostrutturati (Italy)
S. Caria, CNR, Istituto per lo Studio dei Materiali Nanostrutturati (Italy)
R. Zamboni, CNR, Istituto per lo Studio dei Materiali Nanostrutturati (Italy)


Published in SPIE Proceedings Vol. 6192:
Organic Optoelectronics and Photonics II
Paul L. Heremans; Michele Muccini; Eric A. Meulenkamp, Editor(s)

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