Light diffusing effects of nano and micro-structures on OLED with microcavity

We examined the light diffusing effects of nano and micro-structures on microcavity designed OLEDs. The results of FDTD simulations and experiments showed that the pillar shaped nano-structure was more effective than the concave micro-structure for light diffusing of microcavity OLEDs. The sharp lum...

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Published inOptics express Vol. 22 Suppl 6; no. S6; pp. A1507 - A1518
Main Authors Cho, Doo-Hee, Shin, Jin-Wook, Joo, Chul Woong, Lee, Jonghee, Park, Seung Koo, Moon, Jaehyun, Cho, Nam Sung, Chu, Hye Yong, Lee, Jeong-Ik
Format Journal Article
LanguageEnglish
Published United States 20.10.2014
Subjects
Equipment Design
Equipment Failure Analysis
Light
Lighting - instrumentation
Metal Nanoparticles - chemistry
Metal Nanoparticles - ultrastructure
Miniaturization
Organic Chemicals - chemistry
Scattering, Radiation
Semiconductors
Surface Plasmon Resonance - instrumentation
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Summary:We examined the light diffusing effects of nano and micro-structures on microcavity designed OLEDs. The results of FDTD simulations and experiments showed that the pillar shaped nano-structure was more effective than the concave micro-structure for light diffusing of microcavity OLEDs. The sharp luminance distribution of the microcavity OLED was changed to near Lambertian luminance distribution by the nano-structure, and light diffusing effects increased with the height of the nano-structure. Furthermore, the nano-structure has advantages including light extraction of the substrate mode, reproducibility of manufacturing process, and minimizing pixel blur problems in an OLED display panel. The nano-structure is a promising candidate for a light diffuser, resolving the viewing angle problems in microcavity OLEDs.
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ISSN:1094-4087
1094-4087
DOI:10.1364/oe.22.0a1507