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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 16, Iss. 26 — Dec. 22, 2008
  • pp: 21184–21190

Efficiency improvement and image quality of organic light-emitting display by attaching cylindrical microlens arrays

Jiun-Haw Lee, Yu-Hsuan Ho, Kuan-Yu Chen, Hoang-Yan Lin, Jheng-Hao Fang, Sheng-Chih Hsu, Jia-Rong Lin, and Mao-Kuo Wei  »View Author Affiliations


Optics Express, Vol. 16, Issue 26, pp. 21184-21190 (2008)
http://dx.doi.org/10.1364/OE.16.021184


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Abstract

In this paper, cylindrical microlens arrays with two different alignments were proposed to be applied in a commercial mobile phone having an organic light-emitting diode (OLED) panel. It was found that the parallel-aligned cylindrical array had better performance than the vertical-aligned one for the OLED panel. The parallel-aligned cylindrical microlens array can increase the luminous current efficiency at surface normal and the luminous power efficiency of the OLED panel by 45% and 38%, respectively. Besides, it can also make the spectrum of the OLED panel more insensitive to the viewing angle. Though it can slightly blur the image on the OLED panel, the universal image quality index can be maintained at a level of 0.8630.

© 2008 Optical Society of America

OCIS Codes
(080.3630) Geometric optics : Lenses
(110.3000) Imaging systems : Image quality assessment
(120.2040) Instrumentation, measurement, and metrology : Displays

ToC Category:
Instrumentation, Measurement, and Metrology

History
Original Manuscript: September 18, 2008
Revised Manuscript: November 15, 2008
Manuscript Accepted: December 4, 2008
Published: December 8, 2008

Citation
Jiun-Haw Lee, Yu-Hsuan Ho, Kuan-Yu Chen, Hoang-Yan Lin, Jheng-Hao Fang, Sheng-Chih Hsu, Jia-Rong Lin, and Mao-Kuo Wei, "Efficiency improvement and image quality of organic light-emitting display by attaching cylindrical microlens arrays," Opt. Express 16, 21184-21190 (2008)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-16-26-21184


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References

  1. C. W. Tang and S. A. Vanslyke, "Organic electroluminescent diodes," Appl. Phys. Lett. 51, 913-915 (1987) [CrossRef]
  2. M.-H. Lu and J. C. Sturm, "Optimization of external coupling and light emission in organic light-emitting devices: modeling and experiment," J. Appl. Phys. 91, 595-604 (2002) [CrossRef]
  3. Y. R. Do, Y.-C. Kim, Y.-W. Song, and Y.-H. Lee, "Enhanced light extraction efficiency from organic light emitting diodes by insertion of a two-dimensional photonic crystal structure," J. Appl. Phys. 967629-7636 (2004) [CrossRef]
  4. T. Yamasaki, K. Suminoka, and T. Tsutsui, "Organic light-emitting devices with an ordered monolayer of silica microspheres as a scattering medium," Appl. Phys. Lett. 761243-1245 (2000) [CrossRef]
  5. H.-Y. Lin, J.-H. Lee, M.-K. Wei, C.-L. Dai, C.-F. Wu, Y.-H. Ho, H.-Y. Lin, and T.-C. Wu, "Improvement of the outcoupling efficiency of an organic light-emitting device by attaching microstructured films," Opt. Commun. 275, 464-469 (2007) [CrossRef]
  6. L. Lin, T. K. Shia, and C.-J. Chiu, "Silicon-processed plastic micropyramids for brightness enhancement applications," J. Micromech. Microeng. 10395-400 (2000) [CrossRef]
  7. S. Möller and S. R. Forrest, "Improved light out-coupling in organic light-emitting diodes employing ordered microlens arrays," J. Appl. Phys. 91, 3324-3327 (2002) [CrossRef]
  8. M.-K. Wei and I-L. Su, "Method to evaluate the enhancement of luminance efficiency in planar OLED light emitting devices for microlens array," Opt. Express 12, 5777-5782 (2004) [CrossRef] [PubMed]
  9. H. Peng, Y. L. Ho, X.-J. Yu, M. Wong, and H.-S. Kwok, "Coupling efficiency enhancement in organic light-emitting devices using microlens array-theory and experiment," J. Display Technol. 1, 278-282 (2005) [CrossRef]
  10. Y. Sun and S. R. Forrest, "Organic light emitting devices with enhanced outcoupling via microlenses fabricated by imprint lithography," J. Appl. Phys. 100, 073106 (2006) [CrossRef]
  11. M.-K. Wei, I-L. Su, Y.-J. Chen, M. Chang, H.-Y. Ling, and T.-C. Wu, "The influence of a microlens array on planar organic light-emitting devices," J. Micromech. Microeng. 16, 368-374 (2006) [CrossRef]
  12. M.-K. Wei, J.-H. Lee, H.-Y. Lin, Y.-H. Ho, K.-Y. Chen, C.-C. Lin, C.-F. Wu, H.-Y. Lin, J.-H. Tsai, and T.-C. Wu, "Efficiency improvement and spectral shift of an organic light-emitting device by attaching a hexagon-based microlens array," J. Opt. A: Pure Appl. Opt. 10, 055302 (2008) [CrossRef]
  13. H.-Y. Lin, Y.-H. Ho, J.-H. Lee, K.-Y. Chen, J.-H. Fang, S.-C. Hsu, M.-K. Wei, H.-Y. Lin, J.-H. Tsai, and T.-C. Wu, "Patterned microlens array for efficiency improvement of small-pixelated organic light-emitting devices," Opt. Express 16, 11044-11051 (2008) [CrossRef] [PubMed]
  14. Z. Wang and A. C. Bovik, "A universal image quality index," IEEE Signal Process. Lett. 9, 81-84 (2002) [CrossRef]

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