Referenced Items are not available for this document.
Microlens arrays are introduced on glass substrates to improve the out-coupling efficiency of organic light-emitting devices (OLEDs). The microlenses suppress waveguiding loss in the substrate. A theoretical model, based on electromagnetic wave propagation and geometric ray tracing, is developed to simulate the enhancement effects and optimize the structure parameters of the lens pattern. A simple soft-lithography approach is employed to fabricate the microlens array on glass substrates. With the use of an optimized lens pattern, an increase of over 85% in the coupling efficiency of the OLED is expected theoretically. An increase of 70% in the coupling efficiency is achieved experimentally, without detrimental effect to the electrical performance of the OLED.
Published in:
Display Technology, Journal of
(Volume:1
,
Issue:
2
)
Date of Publication: Dec. 2005
- Page(s):
- 278 - 282
- ISSN :
- 1551-319X
- INSPEC Accession Number:
- 8677102
- Digital Object Identifier :
- 10.1109/JDT.2005.858944
- Product Type:
- Journals & Magazines
- Date of Current Version :
- 05 December 2005
- Issue Date :
- Dec. 2005
- Sponsored by :
- IEEE Broadcast Technology Society
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