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Journal Article Light Diffusing Effects of Nano and Microstructures on OLED with Microcavity
Cited 12 time in scopus Download 1 time Share share facebook twitter linkedin kakaostory
Authors
Doo-Hee Cho, Jin-Wook Shin, Chul Woong Joo, Jonghee Lee, Seung Koo Park, Jaehyun Moon, Nam Sung Cho, Hye Yong Chu, Jeong-Ik Lee
Issue Date
2014-10
Citation
Optics Express, v.22, no.21, pp.A1507-A1518
ISSN
1094-4087
Publisher
Optical Society of America(OSA)
Language
English
Type
Journal Article
DOI
https://dx.doi.org/10.1364/OE.22.0A1507
Project Code
14PB1200, Development of fundamental technology for light extraction of OLED, Lee Jeong Ik
Abstract
We examined the light diffusing effects of nano and microstructures 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 nanostructure, and light diffusing effects increased with the height of the nanostructure. 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 nanostructure is a promising candidate for a light diffuser, resolving the viewing angle problems in microcavity OLEDs.
KSP Keywords
Display Panel, FDTD simulation, Manufacturing processes, Nano and microstructures, Nano-structures, OLED display, light extraction, luminance distribution, structural characterization(Microstructure), viewing angle